Sean Anderson [Mon, 17 Oct 2022 20:22:33 +0000 (16:22 -0400)]
dt-bindings: net: Add Lynx PCS binding
This binding is fairly bare-bones for now, since the Lynx driver doesn't
parse any properties (or match based on the compatible). We just need it
in order to prevent the PCS nodes from having phy devices attached to
them. This is not really a problem, but it is a bit inefficient.
This binding is really for three separate PCSs (SGMII, QSGMII, and XFI).
However, the driver treats all of them the same. This works because the
SGMII and XFI devices typically use the same address, and the SerDes
driver (or RCW) muxes between them. The QSGMII PCSs have the same
register layout as the SGMII PCSs. To do things properly, we'd probably
do something like
ethernet-pcs@0 {
#pcs-cells = <1>;
compatible = "fsl,lynx-pcs";
reg = <0>, <1>, <2>, <3>;
};
but that would add complexity, and we can describe the hardware just
fine using separate PCSs for now.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sean Anderson [Mon, 17 Oct 2022 20:22:32 +0000 (16:22 -0400)]
dt-bindings: net: Expand pcs-handle to an array
This allows multiple phandles to be specified for pcs-handle, such as
when multiple PCSs are present for a single MAC. To differentiate
between them, also add a pcs-handle-names property.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 19 Oct 2022 08:49:38 +0000 (09:49 +0100)]
Merge branch 'net-marvell-yaml'
Michał Grzelak says:
====================
net: further improvements to marvell,pp2.yaml
This patchset addresses problems with reg ranges and
additional $refs. It also limits phy-mode and aligns examples.
Best regards,
Michał
---
Changelog:
v4->v5
- drop '+' from all patternProperties
- restrict range of patternProperties to [0-2] in top level
- drop the $ref in patternProperties:'^...':properties:reg
- add patternProperties:'^...':properties:reg:maximum:2
- drop $ref in patternProperties:'^...':properties:phys
- add patternProperties:'^...':properties:phys:maxItems:1
- limit phy-mode to the subset found in dts files
- reflect the order of subnodes' properties in subnodes' required:
- restrict range of pattern to [0-2] in marvell,armada-7k-pp22 case
- restrict range of pattern to [0-1] in marvell,armada-375-pp2 case
- align to 4 spaces all examples:
- add specified maximum to allOf:if:then-else:properties:reg
v3->v4
- change commit message of first patch
- move allOf:$ref to patternProperties:'^...':$ref
- deprecate port-id in favour of reg
- move reg to front of properties list in patternProperties
- reflect the order of properties in required list in
patternProperties
- add unevaluatedProperties: false to patternProperties
- change unevaluated- to additionalProperties at top level
- add property phys: to ports subnode
- extend example binding with additional information about phys and sfp
- hook phys property to phy-consumer.yaml schema
v2->v3
- move 'reg:description' to 'allOf:if:then'
- change '#size-cells: true' and '#address-cells: true'
to '#size-cells: const: 0' and '#address-cells: const: 1'
- replace all occurences of pattern "^eth\{hex_num}*"
with "^(ethernet-)?port@[0-9]+$"
- add description in 'patternProperties:^...'
- add 'patternProperties:^...:interrupt-names:minItems: 1'
- add 'patternProperties:^...:reg:description'
- update 'patternProperties:^...:port-id:description'
- add 'patternProperties:^...:required: - reg'
- update '*:description:' to uppercase
- add 'allOf:then:required:marvell,system-controller'
- skip quotation marks from 'allOf:$ref'
- add 'else' schema to match 'allOf:if:then'
- restrict 'clocks' in 'allOf:if:then'
- restrict 'clock-names' in 'allOf:if:then'
- add #address-cells=<1>; #size-cells=<0>; in 'examples:'
- change every "ethX" to "ethernet-port@X" in 'examples:'
- add "reg" and comment in all ports in 'examples:'
- change /ethernet/eth0/phy-mode in examples://Armada-375
to "rgmii-id"
- replace each cpm_ with cp0_ in 'examples:'
- replace each _syscon0 with _clk0 in 'examples:'
- remove each eth0X label in 'examples:'
- update armada-375.dtsi and armada-cp11x.dtsi to match
marvell,pp2.yaml
v1->v2
- move 'properties' to the front of the file
- remove blank line after 'properties'
- move 'compatible' to the front of 'properties'
- move 'clocks', 'clock-names' and 'reg' definitions to 'properties'
- substitute all occurences of 'marvell,armada-7k-pp2' with
'marvell,armada-7k-pp22'
- add properties:#size-cells and properties:#address-cells
- specify list in 'interrupt-names'
- remove blank lines after 'patternProperties'
- remove '^interrupt' and '^#.*-cells$' patterns
- remove blank line after 'allOf'
- remove first 'if-then-else' block from 'allOf'
- negate the condition in allOf:if schema
- delete 'interrupt-controller' from section 'examples'
- delete '#interrupt-cells' from section 'examples'
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Fri, 14 Oct 2022 21:32:54 +0000 (23:32 +0200)]
ARM: dts: armada-375: Update network description to match schema
Update the PP2 ethernet ports subnodes' names to match
schema enforced by the marvell,pp2.yaml contents.
Add new required properties ('reg') which contains information
about the port ID, keeping 'port-id' ones for backward
compatibility.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Fri, 14 Oct 2022 21:32:53 +0000 (23:32 +0200)]
arm64: dts: marvell: Update network description to match schema
Update the PP2 ethernet ports subnodes' names to match
schema enforced by the marvell,pp2.yaml contents.
Add new required properties ('reg') which contains information
about the port ID, keeping 'port-id' ones for backward
compatibility.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Grzelak [Fri, 14 Oct 2022 21:32:52 +0000 (23:32 +0200)]
dt-bindings: net: marvell,pp2: convert to json-schema
Convert the marvell,pp2 bindings from text to proper schema.
Move 'marvell,system-controller' and 'dma-coherent' properties from
port up to the controller node, to match what is actually done in DT.
Rename all subnodes to match "^(ethernet-)?port@[0-2]$" and deprecate
port-id in favour of 'reg'.
Signed-off-by: Michał Grzelak <mig@semihalf.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Govindarajulu Varadarajan [Tue, 18 Oct 2022 00:58:04 +0000 (17:58 -0700)]
enic: define constants for legacy interrupts offset
Use macro instead of function calls. These values are constant and will
not change.
Signed-off-by: Govindarajulu Varadarajan <govind.varadar@gmail.com>
Link: https://lore.kernel.org/r/20221018005804.188643-1-govind.varadar@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Shenwei Wang [Mon, 17 Oct 2022 16:12:36 +0000 (11:12 -0500)]
net: fec: remove the unused functions
Removed those unused functions since we simplified the driver
by using the page pool to manage RX buffers.
Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Link: https://lore.kernel.org/r/20221017161236.1563975-1-shenwei.wang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Arnd Bergmann [Mon, 17 Oct 2022 12:18:26 +0000 (14:18 +0200)]
net: remove smc911x driver
This driver was used on Arm and SH machines until 2009, when the
last platforms moved to the smsc911x driver for the same hardware.
Time to retire this version.
Link: https://lore.kernel.org/netdev/1232010482-3744-1-git-send-email-steve.glendinning@smsc.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20221017121900.3520108-1-arnd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Wed, 19 Oct 2022 01:56:41 +0000 (18:56 -0700)]
Merge tag 'for-netdev' of git://git./linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
pull-request: bpf-next 2022-10-18
We've added 33 non-merge commits during the last 14 day(s) which contain
a total of 31 files changed, 874 insertions(+), 538 deletions(-).
The main changes are:
1) Add RCU grace period chaining to BPF to wait for the completion
of access from both sleepable and non-sleepable BPF programs,
from Hou Tao & Paul E. McKenney.
2) Improve helper UAPI by explicitly defining BPF_FUNC_xxx integer
values. In the wild we have seen OS vendors doing buggy backports
where helper call numbers mismatched. This is an attempt to make
backports more foolproof, from Andrii Nakryiko.
3) Add libbpf *_opts API-variants for bpf_*_get_fd_by_id() functions,
from Roberto Sassu.
4) Fix libbpf's BTF dumper for structs with padding-only fields,
from Eduard Zingerman.
5) Fix various libbpf bugs which have been found from fuzzing with
malformed BPF object files, from Shung-Hsi Yu.
6) Clean up an unneeded check on existence of SSE2 in BPF x86-64 JIT,
from Jie Meng.
7) Fix various ASAN bugs in both libbpf and selftests when running
the BPF selftest suite on arm64, from Xu Kuohai.
8) Fix missing bpf_iter_vma_offset__destroy() call in BPF iter selftest
and use in-skeleton link pointer to remove an explicit bpf_link__destroy(),
from Jiri Olsa.
9) Fix BPF CI breakage by pointing to iptables-legacy instead of relying
on symlinked iptables which got upgraded to iptables-nft,
from Martin KaFai Lau.
10) Minor BPF selftest improvements all over the place, from various others.
* tag 'for-netdev' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (33 commits)
bpf/docs: Update README for most recent vmtest.sh
bpf: Use rcu_trace_implies_rcu_gp() for program array freeing
bpf: Use rcu_trace_implies_rcu_gp() in local storage map
bpf: Use rcu_trace_implies_rcu_gp() in bpf memory allocator
rcu-tasks: Provide rcu_trace_implies_rcu_gp()
selftests/bpf: Use sys_pidfd_open() helper when possible
libbpf: Fix null-pointer dereference in find_prog_by_sec_insn()
libbpf: Deal with section with no data gracefully
libbpf: Use elf_getshdrnum() instead of e_shnum
selftest/bpf: Fix error usage of ASSERT_OK in xdp_adjust_tail.c
selftests/bpf: Fix error failure of case test_xdp_adjust_tail_grow
selftest/bpf: Fix memory leak in kprobe_multi_test
selftests/bpf: Fix memory leak caused by not destroying skeleton
libbpf: Fix memory leak in parse_usdt_arg()
libbpf: Fix use-after-free in btf_dump_name_dups
selftests/bpf: S/iptables/iptables-legacy/ in the bpf_nf and xdp_synproxy test
selftests/bpf: Alphabetize DENYLISTs
selftests/bpf: Add tests for _opts variants of bpf_*_get_fd_by_id()
libbpf: Introduce bpf_link_get_fd_by_id_opts()
libbpf: Introduce bpf_btf_get_fd_by_id_opts()
...
====================
Link: https://lore.kernel.org/r/20221018210631.11211-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Daniel Müller [Mon, 17 Oct 2022 23:24:58 +0000 (23:24 +0000)]
bpf/docs: Update README for most recent vmtest.sh
Since commit
40b09653b197 ("selftests/bpf: Adjust vmtest.sh to use local
kernel configuration") the vmtest.sh script no longer downloads a kernel
configuration but uses the local, in-repository one.
This change updates the README, which still mentions the old behavior.
Signed-off-by: Daniel Müller <deso@posteo.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20221017232458.1272762-1-deso@posteo.net
Alexei Starovoitov [Tue, 18 Oct 2022 17:27:02 +0000 (10:27 -0700)]
Merge branch 'Remove unnecessary RCU grace period chaining'
Hou Tao says:
====================
Now bpf uses RCU grace period chaining to wait for the completion of
access from both sleepable and non-sleepable bpf program: calling
call_rcu_tasks_trace() firstly to wait for a RCU-tasks-trace grace
period, then in its callback calls call_rcu() or kfree_rcu() to wait for
a normal RCU grace period.
According to the implementation of RCU Tasks Trace, it inovkes
->postscan_func() to wait for one RCU-tasks-trace grace period and
rcu_tasks_trace_postscan() inovkes synchronize_rcu() to wait for one
normal RCU grace period in turn, so one RCU-tasks-trace grace period
will imply one normal RCU grace period. To codify the implication,
introduces rcu_trace_implies_rcu_gp() in patch #1. And using it in patch
Other two uses of call_rcu_tasks_trace() are unchanged: for
__bpf_prog_put_rcu() there is no gp chain and for
__bpf_tramp_image_put_rcu_tasks() it chains RCU tasks trace GP and RCU
tasks GP.
An alternative way to remove these unnecessary RCU grace period
chainings is using the RCU polling API to check whether or not a normal
RCU grace period has passed (e.g. get_state_synchronize_rcu()). But it
needs an unsigned long space for each free element or each call, and
it is not affordable for local storage element, so as for now always
rcu_trace_implies_rcu_gp().
Comments are always welcome.
Change Log:
v2:
* codify the implication of RCU Tasks Trace grace period instead of
assuming for it
v1: https://lore.kernel.org/bpf/
20221011071128.
3470622-1-houtao@huaweicloud.com
Hou Tao (3):
bpf: Use rcu_trace_implies_rcu_gp() in bpf memory allocator
bpf: Use rcu_trace_implies_rcu_gp() in local storage map
bpf: Use rcu_trace_implies_rcu_gp() for program array freeing
====================
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Hou Tao [Fri, 14 Oct 2022 11:39:46 +0000 (19:39 +0800)]
bpf: Use rcu_trace_implies_rcu_gp() for program array freeing
To support both sleepable and normal uprobe bpf program, the freeing of
trace program array chains a RCU-tasks-trace grace period and a normal
RCU grace period one after the other.
With the introduction of rcu_trace_implies_rcu_gp(),
__bpf_prog_array_free_sleepable_cb() can check whether or not a normal
RCU grace period has also passed after a RCU-tasks-trace grace period
has passed. If it is true, it is safe to invoke kfree() directly.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20221014113946.965131-5-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Hou Tao [Fri, 14 Oct 2022 11:39:45 +0000 (19:39 +0800)]
bpf: Use rcu_trace_implies_rcu_gp() in local storage map
Local storage map is accessible for both sleepable and non-sleepable bpf
program, and its memory is freed by using both call_rcu_tasks_trace() and
kfree_rcu() to wait for both RCU-tasks-trace grace period and RCU grace
period to pass.
With the introduction of rcu_trace_implies_rcu_gp(), both
bpf_selem_free_rcu() and bpf_local_storage_free_rcu() can check whether
or not a normal RCU grace period has also passed after a RCU-tasks-trace
grace period has passed. If it is true, it is safe to call kfree()
directly.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20221014113946.965131-4-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Hou Tao [Fri, 14 Oct 2022 11:39:44 +0000 (19:39 +0800)]
bpf: Use rcu_trace_implies_rcu_gp() in bpf memory allocator
The memory free logic in bpf memory allocator chains a RCU Tasks Trace
grace period and a normal RCU grace period one after the other, so it
can ensure that both sleepable and non-sleepable programs have finished.
With the introduction of rcu_trace_implies_rcu_gp(),
__free_rcu_tasks_trace() can check whether or not a normal RCU grace
period has also passed after a RCU Tasks Trace grace period has passed.
If it is true, freeing these elements directly, else freeing through
call_rcu().
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20221014113946.965131-3-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Paul E. McKenney [Fri, 14 Oct 2022 11:39:43 +0000 (19:39 +0800)]
rcu-tasks: Provide rcu_trace_implies_rcu_gp()
As an accident of implementation, an RCU Tasks Trace grace period also
acts as an RCU grace period. However, this could change at any time.
This commit therefore creates an rcu_trace_implies_rcu_gp() that currently
returns true to codify this accident. Code relying on this accident
must call this function to verify that this accident is still happening.
Reported-by: Hou Tao <houtao@huaweicloud.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Link: https://lore.kernel.org/r/20221014113946.965131-2-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Jiapeng Chong [Mon, 17 Oct 2022 09:35:40 +0000 (17:35 +0800)]
net: ip6_gre: Remove the unused function ip6gre_tnl_addr_conflict()
The function ip6gre_tnl_addr_conflict() is defined in the ip6_gre.c file,
but not called elsewhere, so delete this unused function.
net/ipv6/ip6_gre.c:887:20: warning: unused function 'ip6gre_tnl_addr_conflict'.
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2419
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20221017093540.26806-1-jiapeng.chong@linux.alibaba.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Hou Tao [Tue, 11 Oct 2022 07:12:49 +0000 (15:12 +0800)]
selftests/bpf: Use sys_pidfd_open() helper when possible
SYS_pidfd_open may be undefined for old glibc, so using sys_pidfd_open()
helper defined in task_local_storage_helpers.h instead to fix potential
build failure.
And according to commit
7615d9e1780e ("arch: wire-up pidfd_open()"), the
syscall number of pidfd_open is always 434 except for alpha architure,
so update the definition of __NR_pidfd_open accordingly.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221011071249.3471760-1-houtao@huaweicloud.com
Andrii Nakryiko [Thu, 13 Oct 2022 15:50:08 +0000 (08:50 -0700)]
Merge branch 'libbpf: fix fuzzer-reported issues'
Shung-Hsi Yu says:
====================
Hi, this patch set fixes several fuzzer-reported issues of libbpf when
dealing with (malformed) BPF object file:
- patch #1 fix out-of-bound heap write reported by oss-fuzz (currently
incorrectly marked as fixed)
- patch #2 and #3 fix null-pointer dereference found by locally-run
fuzzer.
v2:
- Rebase to bpf-next
- Move elf_getshdrnum() closer to where it's result is used in patch #1, as
suggested by Andrii
- Touch up the comment in bpf_object__elf_collect(), replacing mention of
e_shnum with elf_getshdrnum()
- Minor wording change in commit message of patch #1 to for better readability
- Remove extra note that comes after commit message in patch #1
v1: https://lore.kernel.org/bpf/
20221007174816.17536-1-shung-hsi.yu@suse.com/
====================
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Andrii Nakryiko [Thu, 13 Oct 2022 15:37:56 +0000 (08:37 -0700)]
Merge branch 'Fix bugs found by ASAN when running selftests'
Xu Kuohai says:
====================
From: Xu Kuohai <xukuohai@huawei.com>
This series fixes bugs found by ASAN when running bpf selftests on arm64.
v4:
- Address Andrii's suggestions
v3: https://lore.kernel.org/bpf/
5311e154-c2d4-91a5-ccb8-
f5adede579ed@huawei.com
- Fix error failure of case test_xdp_adjust_tail_grow exposed by this series
v2: https://lore.kernel.org/bpf/
20221010070454.577433-1-xukuohai@huaweicloud.com
- Rebase and fix conflict
v1: https://lore.kernel.org/bpf/
20221009131830.395569-1-xukuohai@huaweicloud.com
====================
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Shung-Hsi Yu [Wed, 12 Oct 2022 02:23:53 +0000 (10:23 +0800)]
libbpf: Fix null-pointer dereference in find_prog_by_sec_insn()
When there are no program sections, obj->programs is left unallocated,
and find_prog_by_sec_insn()'s search lands on &obj->programs[0] == NULL,
and will cause null-pointer dereference in the following access to
prog->sec_idx.
Guard the search with obj->nr_programs similar to what's being done in
__bpf_program__iter() to prevent null-pointer access from happening.
Fixes:
db2b8b06423c ("libbpf: Support CO-RE relocations for multi-prog sections")
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221012022353.7350-4-shung-hsi.yu@suse.com
Shung-Hsi Yu [Wed, 12 Oct 2022 02:23:52 +0000 (10:23 +0800)]
libbpf: Deal with section with no data gracefully
ELF section data pointer returned by libelf may be NULL (if section has
SHT_NOBITS), so null check section data pointer before attempting to
copy license and kversion section.
Fixes:
cb1e5e961991 ("bpf tools: Collect version and license from ELF sections")
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221012022353.7350-3-shung-hsi.yu@suse.com
Shung-Hsi Yu [Wed, 12 Oct 2022 02:23:51 +0000 (10:23 +0800)]
libbpf: Use elf_getshdrnum() instead of e_shnum
This commit replace e_shnum with the elf_getshdrnum() helper to fix two
oss-fuzz-reported heap-buffer overflow in __bpf_object__open. Both
reports are incorrectly marked as fixed and while still being
reproducible in the latest libbpf.
# clusterfuzz-testcase-minimized-bpf-object-fuzzer-
5747922482888704
libbpf: loading object 'fuzz-object' from buffer
libbpf: sec_cnt is 0
libbpf: elf: section(1) .data, size 0, link
538976288, flags
2020202020202020, type=2
libbpf: elf: section(2) .data, size 32, link
538976288, flags
202020202020ff20, type=1
=================================================================
==13==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6020000000c0 at pc 0x0000005a7b46 bp 0x7ffd12214af0 sp 0x7ffd12214ae8
WRITE of size 4 at 0x6020000000c0 thread T0
SCARINESS: 46 (4-byte-write-heap-buffer-overflow-far-from-bounds)
#0 0x5a7b45 in bpf_object__elf_collect /src/libbpf/src/libbpf.c:3414:24
#1 0x5733c0 in bpf_object_open /src/libbpf/src/libbpf.c:7223:16
#2 0x5739fd in bpf_object__open_mem /src/libbpf/src/libbpf.c:7263:20
...
The issue lie in libbpf's direct use of e_shnum field in ELF header as
the section header count. Where as libelf implemented an extra logic
that, when e_shnum == 0 && e_shoff != 0, will use sh_size member of the
initial section header as the real section header count (part of ELF
spec to accommodate situation where section header counter is larger
than SHN_LORESERVE).
The above inconsistency lead to libbpf writing into a zero-entry calloc
area. So intead of using e_shnum directly, use the elf_getshdrnum()
helper provided by libelf to retrieve the section header counter into
sec_cnt.
Fixes:
0d6988e16a12 ("libbpf: Fix section counting logic")
Fixes:
25bbbd7a444b ("libbpf: Remove assumptions about uniqueness of .rodata/.data/.bss maps")
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868
Link: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40957
Link: https://lore.kernel.org/bpf/20221012022353.7350-2-shung-hsi.yu@suse.com
Xu Kuohai [Tue, 11 Oct 2022 12:01:08 +0000 (08:01 -0400)]
selftest/bpf: Fix error usage of ASSERT_OK in xdp_adjust_tail.c
xdp_adjust_tail.c calls ASSERT_OK() to check the return value of
bpf_prog_test_load(), but the condition is not correct. Fix it.
Fixes:
791cad025051 ("bpf: selftests: Get rid of CHECK macro in xdp_adjust_tail.c")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-7-xukuohai@huaweicloud.com
Xu Kuohai [Tue, 11 Oct 2022 12:01:07 +0000 (08:01 -0400)]
selftests/bpf: Fix error failure of case test_xdp_adjust_tail_grow
test_xdp_adjust_tail_grow failed with ipv6:
test_xdp_adjust_tail_grow:FAIL:ipv6 unexpected error: -28 (errno 28)
The reason is that this test case tests ipv4 before ipv6, and when ipv4
test finished, topts.data_size_out was set to 54, which is smaller than the
ipv6 output data size 114, so ipv6 test fails with NOSPC error.
Fix it by reset topts.data_size_out to sizeof(buf) before testing ipv6.
Fixes:
04fcb5f9a104 ("selftests/bpf: Migrate from bpf_prog_test_run")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-6-xukuohai@huaweicloud.com
Xu Kuohai [Tue, 11 Oct 2022 12:01:06 +0000 (08:01 -0400)]
selftest/bpf: Fix memory leak in kprobe_multi_test
The get_syms() function in kprobe_multi_test.c does not free the string
memory allocated by sscanf correctly. Fix it.
Fixes:
5b6c7e5c4434 ("selftests/bpf: Add attach bench test")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-5-xukuohai@huaweicloud.com
Xu Kuohai [Tue, 11 Oct 2022 12:01:05 +0000 (08:01 -0400)]
selftests/bpf: Fix memory leak caused by not destroying skeleton
Some test cases does not destroy skeleton object correctly, causing ASAN
to report memory leak warning. Fix it.
Fixes:
0ef6740e9777 ("selftests/bpf: Add tests for kptr_ref refcounting")
Fixes:
1642a3945e22 ("selftests/bpf: Add struct argument tests with fentry/fexit programs.")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-4-xukuohai@huaweicloud.com
Xu Kuohai [Tue, 11 Oct 2022 12:01:04 +0000 (08:01 -0400)]
libbpf: Fix memory leak in parse_usdt_arg()
In the arm64 version of parse_usdt_arg(), when sscanf returns 2, reg_name
is allocated but not freed. Fix it.
Fixes:
0f8619929c57 ("libbpf: Usdt aarch64 arg parsing support")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-3-xukuohai@huaweicloud.com
Xu Kuohai [Tue, 11 Oct 2022 12:01:03 +0000 (08:01 -0400)]
libbpf: Fix use-after-free in btf_dump_name_dups
ASAN reports an use-after-free in btf_dump_name_dups:
ERROR: AddressSanitizer: heap-use-after-free on address 0xffff927006db at pc 0xaaaab5dfb618 bp 0xffffdd89b890 sp 0xffffdd89b928
READ of size 2 at 0xffff927006db thread T0
#0 0xaaaab5dfb614 in __interceptor_strcmp.part.0 (test_progs+0x21b614)
#1 0xaaaab635f144 in str_equal_fn tools/lib/bpf/btf_dump.c:127
#2 0xaaaab635e3e0 in hashmap_find_entry tools/lib/bpf/hashmap.c:143
#3 0xaaaab635e72c in hashmap__find tools/lib/bpf/hashmap.c:212
#4 0xaaaab6362258 in btf_dump_name_dups tools/lib/bpf/btf_dump.c:1525
#5 0xaaaab636240c in btf_dump_resolve_name tools/lib/bpf/btf_dump.c:1552
#6 0xaaaab6362598 in btf_dump_type_name tools/lib/bpf/btf_dump.c:1567
#7 0xaaaab6360b48 in btf_dump_emit_struct_def tools/lib/bpf/btf_dump.c:912
#8 0xaaaab6360630 in btf_dump_emit_type tools/lib/bpf/btf_dump.c:798
#9 0xaaaab635f720 in btf_dump__dump_type tools/lib/bpf/btf_dump.c:282
#10 0xaaaab608523c in test_btf_dump_incremental tools/testing/selftests/bpf/prog_tests/btf_dump.c:236
#11 0xaaaab6097530 in test_btf_dump tools/testing/selftests/bpf/prog_tests/btf_dump.c:875
#12 0xaaaab6314ed0 in run_one_test tools/testing/selftests/bpf/test_progs.c:1062
#13 0xaaaab631a0a8 in main tools/testing/selftests/bpf/test_progs.c:1697
#14 0xffff9676d214 in __libc_start_main ../csu/libc-start.c:308
#15 0xaaaab5d65990 (test_progs+0x185990)
0xffff927006db is located 11 bytes inside of 16-byte region [0xffff927006d0,0xffff927006e0)
freed by thread T0 here:
#0 0xaaaab5e2c7c4 in realloc (test_progs+0x24c7c4)
#1 0xaaaab634f4a0 in libbpf_reallocarray tools/lib/bpf/libbpf_internal.h:191
#2 0xaaaab634f840 in libbpf_add_mem tools/lib/bpf/btf.c:163
#3 0xaaaab636643c in strset_add_str_mem tools/lib/bpf/strset.c:106
#4 0xaaaab6366560 in strset__add_str tools/lib/bpf/strset.c:157
#5 0xaaaab6352d70 in btf__add_str tools/lib/bpf/btf.c:1519
#6 0xaaaab6353e10 in btf__add_field tools/lib/bpf/btf.c:2032
#7 0xaaaab6084fcc in test_btf_dump_incremental tools/testing/selftests/bpf/prog_tests/btf_dump.c:232
#8 0xaaaab6097530 in test_btf_dump tools/testing/selftests/bpf/prog_tests/btf_dump.c:875
#9 0xaaaab6314ed0 in run_one_test tools/testing/selftests/bpf/test_progs.c:1062
#10 0xaaaab631a0a8 in main tools/testing/selftests/bpf/test_progs.c:1697
#11 0xffff9676d214 in __libc_start_main ../csu/libc-start.c:308
#12 0xaaaab5d65990 (test_progs+0x185990)
previously allocated by thread T0 here:
#0 0xaaaab5e2c7c4 in realloc (test_progs+0x24c7c4)
#1 0xaaaab634f4a0 in libbpf_reallocarray tools/lib/bpf/libbpf_internal.h:191
#2 0xaaaab634f840 in libbpf_add_mem tools/lib/bpf/btf.c:163
#3 0xaaaab636643c in strset_add_str_mem tools/lib/bpf/strset.c:106
#4 0xaaaab6366560 in strset__add_str tools/lib/bpf/strset.c:157
#5 0xaaaab6352d70 in btf__add_str tools/lib/bpf/btf.c:1519
#6 0xaaaab6353ff0 in btf_add_enum_common tools/lib/bpf/btf.c:2070
#7 0xaaaab6354080 in btf__add_enum tools/lib/bpf/btf.c:2102
#8 0xaaaab6082f50 in test_btf_dump_incremental tools/testing/selftests/bpf/prog_tests/btf_dump.c:162
#9 0xaaaab6097530 in test_btf_dump tools/testing/selftests/bpf/prog_tests/btf_dump.c:875
#10 0xaaaab6314ed0 in run_one_test tools/testing/selftests/bpf/test_progs.c:1062
#11 0xaaaab631a0a8 in main tools/testing/selftests/bpf/test_progs.c:1697
#12 0xffff9676d214 in __libc_start_main ../csu/libc-start.c:308
#13 0xaaaab5d65990 (test_progs+0x185990)
The reason is that the key stored in hash table name_map is a string
address, and the string memory is allocated by realloc() function, when
the memory is resized by realloc() later, the old memory may be freed,
so the address stored in name_map references to a freed memory, causing
use-after-free.
Fix it by storing duplicated string address in name_map.
Fixes:
919d2b1dbb07 ("libbpf: Allow modification of BTF and add btf__add_str API")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-2-xukuohai@huaweicloud.com
Linus Torvalds [Thu, 13 Oct 2022 17:51:01 +0000 (10:51 -0700)]
Merge tag 'net-6.1-rc1' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter, and wifi.
Current release - regressions:
- Revert "net/sched: taprio: make qdisc_leaf() see the
per-netdev-queue pfifo child qdiscs", it may cause crashes when the
qdisc is reconfigured
- inet: ping: fix splat due to packet allocation refactoring in inet
- tcp: clean up kernel listener's reqsk in inet_twsk_purge(), fix UAF
due to races when per-netns hash table is used
Current release - new code bugs:
- eth: adin1110: check in netdev_event that netdev belongs to driver
- fixes for PTR_ERR() vs NULL bugs in driver code, from Dan and co.
Previous releases - regressions:
- ipv4: handle attempt to delete multipath route when fib_info
contains an nh reference, avoid oob access
- wifi: fix handful of bugs in the new Multi-BSSID code
- wifi: mt76: fix rate reporting / throughput regression on mt7915
and newer, fix checksum offload
- wifi: iwlwifi: mvm: fix double list_add at
iwl_mvm_mac_wake_tx_queue (other cases)
- wifi: mac80211: do not drop packets smaller than the LLC-SNAP
header on fast-rx
Previous releases - always broken:
- ieee802154: don't warn zero-sized raw_sendmsg()
- ipv6: ping: fix wrong checksum for large frames
- mctp: prevent double key removal and unref
- tcp/udp: fix memory leaks and races around IPV6_ADDRFORM
- hv_netvsc: fix race between VF offering and VF association message
Misc:
- remove -Warray-bounds silencing in the drivers, compilers fixed"
* tag 'net-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
sunhme: fix an IS_ERR() vs NULL check in probe
net: marvell: prestera: fix a couple NULL vs IS_ERR() checks
kcm: avoid potential race in kcm_tx_work
tcp: Clean up kernel listener's reqsk in inet_twsk_purge()
net: phy: micrel: Fixes FIELD_GET assertion
openvswitch: add nf_ct_is_confirmed check before assigning the helper
tcp: Fix data races around icsk->icsk_af_ops.
ipv6: Fix data races around sk->sk_prot.
tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct().
udp: Call inet6_destroy_sock() in setsockopt(IPV6_ADDRFORM).
tcp/udp: Fix memory leak in ipv6_renew_options().
mctp: prevent double key removal and unref
selftests: netfilter: Fix nft_fib.sh for all.rp_filter=1
netfilter: rpfilter/fib: Populate flowic_l3mdev field
selftests: netfilter: Test reverse path filtering
net/mlx5: Make ASO poll CQ usable in atomic context
tcp: cdg: allow tcp_cdg_release() to be called multiple times
inet: ping: fix recent breakage
ipv6: ping: fix wrong checksum for large frames
net: ethernet: ti: am65-cpsw: set correct devlink flavour for unused ports
...
Linus Torvalds [Thu, 13 Oct 2022 17:44:36 +0000 (10:44 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin:
- Fix a regression in virtio pci on power
- Add a reviewer for ifcvf
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vdpa/ifcvf: add reviewer
virtio_pci: use irq to detect interrupt support
Linus Torvalds [Thu, 13 Oct 2022 17:36:57 +0000 (10:36 -0700)]
Merge tag 'trace-v6.1-1' of git://git./linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Found that the synthetic events were using strlen/strscpy() on values
that could have come from userspace, and that is bad.
Consolidate the string logic of kprobe and eprobe and extend it to
the synthetic events to safely process string addresses.
- Clean up content of text dump in ftrace_bug() where the output does
not make char reads into signed and sign extending the byte output.
- Fix some kernel docs in the ring buffer code.
* tag 'trace-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix reading strings from synthetic events
tracing: Add "(fault)" name injection to kernel probes
tracing: Move duplicate code of trace_kprobe/eprobe.c into header
ring-buffer: Fix kernel-doc
ftrace: Fix char print issue in print_ip_ins()
Linus Torvalds [Thu, 13 Oct 2022 17:31:13 +0000 (10:31 -0700)]
Merge tag 'linux-watchdog-6.1-rc1' of git://linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
- new driver for Exar/MaxLinear XR28V38x
- support for exynosautov9 SoC
- support for Renesas R-Car V5H (R8A779G0) and RZ/V2M (r9a09g011) SoC
- support for imx93
- several other fixes and improvements
* tag 'linux-watchdog-6.1-rc1' of git://www.linux-watchdog.org/linux-watchdog: (36 commits)
watchdog: twl4030_wdt: add missing mod_devicetable.h include
dt-bindings: watchdog: migrate mt7621 text bindings to YAML
watchdog: sp5100_tco: Add "action" module parameter
watchdog: imx93: add watchdog timer on imx93
watchdog: imx7ulp_wdt: init wdog when it was active
watchdog: imx7ulp_wdt: Handle wdog reconfigure failure
watchdog: imx7ulp_wdt: Fix RCS timeout issue
watchdog: imx7ulp_wdt: Check CMD32EN in wdog init
watchdog: imx7ulp: Add explict memory barrier for unlock sequence
watchdog: imx7ulp: Move suspend/resume to noirq phase
watchdog: rti-wdt:using the pm_runtime_resume_and_get to simplify the code
dt-bindings: watchdog: rockchip: add rockchip,rk3128-wdt
watchdog: s3c2410_wdt: support exynosautov9 watchdog
dt-bindings: watchdog: add exynosautov9 compatible
watchdog: npcm: Enable clock if provided
watchdog: meson: keep running if already active
watchdog: dt-bindings: atmel,at91sam9-wdt: convert to json-schema
watchdog: armada_37xx_wdt: Fix .set_timeout callback
watchdog: sa1100: make variable sa1100dog_driver static
watchdog: w83977f_wdt: Fix comment typo
...
Linus Torvalds [Thu, 13 Oct 2022 17:21:37 +0000 (10:21 -0700)]
Merge tag 'ceph-for-6.1-rc1' of https://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"A quiet round this time: several assorted filesystem fixes, the most
noteworthy one being some additional wakeups in cap handling code, and
a messenger cleanup"
* tag 'ceph-for-6.1-rc1' of https://github.com/ceph/ceph-client:
ceph: remove Sage's git tree from documentation
ceph: fix incorrectly showing the .snap size for stat
ceph: fail the open_by_handle_at() if the dentry is being unlinked
ceph: increment i_version when doing a setattr with caps
ceph: Use kcalloc for allocating multiple elements
ceph: no need to wait for transition RDCACHE|RD -> RD
ceph: fail the request if the peer MDS doesn't support getvxattr op
ceph: wake up the waiters if any new caps comes
libceph: drop last_piece flag from ceph_msg_data_cursor
Linus Torvalds [Thu, 13 Oct 2022 16:58:42 +0000 (09:58 -0700)]
Merge tag 'nfs-for-6.1-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"New Features:
- Add NFSv4.2 xattr tracepoints
- Replace xprtiod WQ in rpcrdma
- Flexfiles cancels I/O on layout recall or revoke
Bugfixes and Cleanups:
- Directly use ida_alloc() / ida_free()
- Don't open-code max_t()
- Prefer using strscpy over strlcpy
- Remove unused forward declarations
- Always return layout states on flexfiles layout return
- Have LISTXATTR treat NFS4ERR_NOXATTR as an empty reply instead of
error
- Allow more xprtrdma memory allocations to fail without triggering a
reclaim
- Various other xprtrdma clean ups
- Fix rpc_killall_tasks() races"
* tag 'nfs-for-6.1-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (27 commits)
NFSv4/flexfiles: Cancel I/O if the layout is recalled or revoked
SUNRPC: Add API to force the client to disconnect
SUNRPC: Add a helper to allow pNFS drivers to selectively cancel RPC calls
SUNRPC: Fix races with rpc_killall_tasks()
xprtrdma: Fix uninitialized variable
xprtrdma: Prevent memory allocations from driving a reclaim
xprtrdma: Memory allocation should be allowed to fail during connect
xprtrdma: MR-related memory allocation should be allowed to fail
xprtrdma: Clean up synopsis of rpcrdma_regbuf_alloc()
xprtrdma: Clean up synopsis of rpcrdma_req_create()
svcrdma: Clean up RPCRDMA_DEF_GFP
SUNRPC: Replace the use of the xprtiod WQ in rpcrdma
NFSv4.2: Add a tracepoint for listxattr
NFSv4.2: Add tracepoints for getxattr, setxattr, and removexattr
NFSv4.2: Move TRACE_DEFINE_ENUM(NFS4_CONTENT_*) under CONFIG_NFS_V4_2
NFSv4.2: Add special handling for LISTXATTR receiving NFS4ERR_NOXATTR
nfs: remove nfs_wait_atomic_killable() and nfs_write_prepare() declaration
NFSv4: remove nfs4_renewd_prepare_shutdown() declaration
fs/nfs/pnfs_nfs.c: fix spelling typo and syntax error in comment
NFSv4/pNFS: Always return layout stats on layout return for flexfiles
...
Linus Torvalds [Thu, 13 Oct 2022 16:56:14 +0000 (09:56 -0700)]
Merge tag 'for-linus-6.1-ofs1' of git://git./linux/kernel/git/hubcap/linux
Pull orangefs update from Mike Marshall:
"Change iterate to iterate_shared"
* tag 'for-linus-6.1-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
Orangefs: change iterate to iterate_shared
Dan Carpenter [Wed, 12 Oct 2022 15:01:32 +0000 (18:01 +0300)]
sunhme: fix an IS_ERR() vs NULL check in probe
The devm_request_region() function does not return error pointers, it
returns NULL on error.
Fixes:
914d9b2711dd ("sunhme: switch to devres")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Link: https://lore.kernel.org/r/Y0bWzJL8JknX8MUf@kili
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Dan Carpenter [Wed, 12 Oct 2022 15:00:59 +0000 (18:00 +0300)]
net: marvell: prestera: fix a couple NULL vs IS_ERR() checks
The __prestera_nexthop_group_create() function returns NULL on error
and the prestera_nexthop_group_get() returns error pointers. Fix these
two checks.
Fixes:
0a23ae237171 ("net: marvell: prestera: Add router nexthops ABI")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/Y0bWq+7DoKK465z8@kili
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Eric Dumazet [Wed, 12 Oct 2022 13:34:12 +0000 (13:34 +0000)]
kcm: avoid potential race in kcm_tx_work
syzbot found that kcm_tx_work() could crash [1] in:
/* Primarily for SOCK_SEQPACKET sockets */
if (likely(sk->sk_socket) &&
test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
<<*>> clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
sk->sk_write_space(sk);
}
I think the reason is that another thread might concurrently
run in kcm_release() and call sock_orphan(sk) while sk is not
locked. kcm_tx_work() find sk->sk_socket being NULL.
[1]
BUG: KASAN: null-ptr-deref in instrument_atomic_write include/linux/instrumented.h:86 [inline]
BUG: KASAN: null-ptr-deref in clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline]
BUG: KASAN: null-ptr-deref in kcm_tx_work+0xff/0x160 net/kcm/kcmsock.c:742
Write of size 8 at addr
0000000000000008 by task kworker/u4:3/53
CPU: 0 PID: 53 Comm: kworker/u4:3 Not tainted 5.19.0-rc3-next-
20220621-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: kkcmd kcm_tx_work
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
kasan_report+0xbe/0x1f0 mm/kasan/report.c:495
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189
instrument_atomic_write include/linux/instrumented.h:86 [inline]
clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline]
kcm_tx_work+0xff/0x160 net/kcm/kcmsock.c:742
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
</TASK>
Fixes:
ab7ac4eb9832 ("kcm: Kernel Connection Multiplexor module")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <tom@herbertland.com>
Link: https://lore.kernel.org/r/20221012133412.519394-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Kuniyuki Iwashima [Wed, 12 Oct 2022 14:50:36 +0000 (07:50 -0700)]
tcp: Clean up kernel listener's reqsk in inet_twsk_purge()
Eric Dumazet reported a use-after-free related to the per-netns ehash
series. [0]
When we create a TCP socket from userspace, the socket always holds a
refcnt of the netns. This guarantees that a reqsk timer is always fired
before netns dismantle. Each reqsk has a refcnt of its listener, so the
listener is not freed before the reqsk, and the net is not freed before
the listener as well.
OTOH, when in-kernel users create a TCP socket, it might not hold a refcnt
of its netns. Thus, a reqsk timer can be fired after the netns dismantle
and access freed per-netns ehash.
To avoid the use-after-free, we need to clean up TCP_NEW_SYN_RECV sockets
in inet_twsk_purge() if the netns uses a per-netns ehash.
[0]: https://lore.kernel.org/netdev/CANn89iLXMup0dRD_Ov79Xt8N9FM0XdhCHEN05sf3eLwxKweM6w@mail.gmail.com/
BUG: KASAN: use-after-free in tcp_or_dccp_get_hashinfo
include/net/inet_hashtables.h:181 [inline]
BUG: KASAN: use-after-free in reqsk_queue_unlink+0x320/0x350
net/ipv4/inet_connection_sock.c:913
Read of size 8 at addr
ffff88807545bd80 by task syz-executor.2/8301
CPU: 1 PID: 8301 Comm: syz-executor.2 Not tainted
6.0.0-syzkaller-02757-gaf7d23f9d96a #0
Hardware name: Google Google Compute Engine/Google Compute Engine,
BIOS Google 09/22/2022
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:317 [inline]
print_report.cold+0x2ba/0x719 mm/kasan/report.c:433
kasan_report+0xb1/0x1e0 mm/kasan/report.c:495
tcp_or_dccp_get_hashinfo include/net/inet_hashtables.h:181 [inline]
reqsk_queue_unlink+0x320/0x350 net/ipv4/inet_connection_sock.c:913
inet_csk_reqsk_queue_drop net/ipv4/inet_connection_sock.c:927 [inline]
inet_csk_reqsk_queue_drop_and_put net/ipv4/inet_connection_sock.c:939 [inline]
reqsk_timer_handler+0x724/0x1160 net/ipv4/inet_connection_sock.c:1053
call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790
__run_timers kernel/time/timer.c:1768 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
__do_softirq+0x1d0/0x9c8 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1107
</IRQ>
Fixes:
d1e5e6408b30 ("tcp: Introduce optional per-netns ehash.")
Reported-by: syzbot <syzkaller@googlegroups.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20221012145036.74960-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Martin KaFai Lau [Wed, 12 Oct 2022 22:12:35 +0000 (15:12 -0700)]
selftests/bpf: S/iptables/iptables-legacy/ in the bpf_nf and xdp_synproxy test
The recent vm image in CI has reported error in selftests that use
the iptables command. Manu Bretelle has pointed out the difference
in the recent vm image that the iptables is sym-linked to the iptables-nft.
With this knowledge, I can also reproduce the CI error by manually running
with the 'iptables-nft'.
This patch is to replace the iptables command with iptables-legacy
to unblock the CI tests.
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20221012221235.3529719-1-martin.lau@linux.dev
Michael S. Tsirkin [Wed, 12 Oct 2022 04:49:23 +0000 (00:49 -0400)]
vdpa/ifcvf: add reviewer
Zhu Lingshan has been writing and reviewing ifcvf patches for
a while now, add as reviewer.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Zhu Lingshan <lingshan.zhu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Michael S. Tsirkin [Wed, 12 Oct 2022 21:58:28 +0000 (17:58 -0400)]
virtio_pci: use irq to detect interrupt support
commit
71491c54eafa ("virtio_pci: don't try to use intxif pin is zero")
breaks virtio_pci on powerpc, when running as a qemu guest.
vp_find_vqs() bails out because pci_dev->pin == 0.
But pci_dev->irq is populated correctly, so vp_find_vqs_intx() would
succeed if we called it - which is what the code used to do.
This seems to happen because pci_dev->pin is not populated in
pci_assign_irq(). A PCI core bug? Maybe.
However Linus said:
I really think that that is basically the only time you should use
that 'pci_dev->pin' thing: it basically exists not for "does this
device have an IRQ", but for "what is the routing of this irq on this
device".
and
The correct way to check for "no irq" doesn't use NO_IRQ at all, it just does
if (dev->irq) ...
so let's just check irq and be done with it.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Fixes:
71491c54eafa ("virtio_pci: don't try to use intxif pin is zero")
Cc: "Angus Chen" <angus.chen@jaguarmicro.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <
20221012220312.308522-1-mst@redhat.com>
Paolo Abeni [Thu, 13 Oct 2022 11:19:41 +0000 (13:19 +0200)]
Merge tag 'wireless-2022-10-13' of git://git./linux/kernel/git/wireless/wireless
Johannes Berg says:
====================
More wireless fixes for 6.1
This has only the fixes for the scan parsing issues.
* tag 'wireless-2022-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
wifi: cfg80211: update hidden BSSes to avoid WARN_ON
wifi: mac80211: fix crash in beacon protection for P2P-device
wifi: mac80211_hwsim: avoid mac80211 warning on bad rate
wifi: cfg80211: avoid nontransmitted BSS list corruption
wifi: cfg80211: fix BSS refcounting bugs
wifi: cfg80211: ensure length byte is present before access
wifi: mac80211: fix MBSSID parsing use-after-free
wifi: cfg80211/mac80211: reject bad MBSSID elements
wifi: cfg80211: fix u8 overflow in cfg80211_update_notlisted_nontrans()
====================
Link: https://lore.kernel.org/r/20221013100522.46346-1-johannes@sipsolutions.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Johannes Berg [Thu, 13 Oct 2022 09:59:16 +0000 (11:59 +0200)]
Merge branch 'cve-fixes-2022-10-13'
Pull in the fixes for various scan parsing bugs found by
Sönke Huster by fuzzing.
Divya Koppera [Tue, 11 Oct 2022 09:54:37 +0000 (15:24 +0530)]
net: phy: micrel: Fixes FIELD_GET assertion
FIELD_GET() must only be used with a mask that is a compile-time
constant. Mark the functions as __always_inline to avoid the problem.
Fixes:
21b688dabecb6a ("net: phy: micrel: Cable Diag feature for lan8814 phy")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Divya Koppera <Divya.Koppera@microchip.com>
Link: https://lore.kernel.org/r/20221011095437.12580-1-Divya.Koppera@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Xin Long [Thu, 6 Oct 2022 19:45:02 +0000 (15:45 -0400)]
openvswitch: add nf_ct_is_confirmed check before assigning the helper
A WARN_ON call trace would be triggered when 'ct(commit, alg=helper)'
applies on a confirmed connection:
WARNING: CPU: 0 PID: 1251 at net/netfilter/nf_conntrack_extend.c:98
RIP: 0010:nf_ct_ext_add+0x12d/0x150 [nf_conntrack]
Call Trace:
<TASK>
nf_ct_helper_ext_add+0x12/0x60 [nf_conntrack]
__nf_ct_try_assign_helper+0xc4/0x160 [nf_conntrack]
__ovs_ct_lookup+0x72e/0x780 [openvswitch]
ovs_ct_execute+0x1d8/0x920 [openvswitch]
do_execute_actions+0x4e6/0xb60 [openvswitch]
ovs_execute_actions+0x60/0x140 [openvswitch]
ovs_packet_cmd_execute+0x2ad/0x310 [openvswitch]
genl_family_rcv_msg_doit.isra.15+0x113/0x150
genl_rcv_msg+0xef/0x1f0
which can be reproduced with these OVS flows:
table=0, in_port=veth1,tcp,tcp_dst=2121,ct_state=-trk
actions=ct(commit, table=1)
table=1, in_port=veth1,tcp,tcp_dst=2121,ct_state=+trk+new
actions=ct(commit, alg=ftp),normal
The issue was introduced by commit
248d45f1e193 ("openvswitch: Allow
attaching helper in later commit") where it somehow removed the check
of nf_ct_is_confirmed before asigning the helper. This patch is to fix
it by bringing it back.
Fixes:
248d45f1e193 ("openvswitch: Allow attaching helper in later commit")
Reported-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Aaron Conole <aconole@redhat.com>
Tested-by: Aaron Conole <aconole@redhat.com>
Link: https://lore.kernel.org/r/c5c9092a22a2194650222bffaf786902613deb16.1665085502.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 13 Oct 2022 00:50:40 +0000 (17:50 -0700)]
Merge branch 'tcp-udp-fix-memory-leaks-and-data-races-around-ipv6_addrform'
Kuniyuki Iwashima says:
====================
tcp/udp: Fix memory leaks and data races around IPV6_ADDRFORM.
This series fixes some memory leaks and data races caused in the
same scenario where one thread converts an IPv6 socket into IPv4
with IPV6_ADDRFORM and another accesses the socket concurrently.
v4: https://lore.kernel.org/netdev/
20221004171802.40968-1-kuniyu@amazon.com/
v3 (Resend): https://lore.kernel.org/netdev/
20221003154425.49458-1-kuniyu@amazon.com/
v3: https://lore.kernel.org/netdev/
20220929012542.55424-1-kuniyu@amazon.com/
v2: https://lore.kernel.org/netdev/
20220928002741.64237-1-kuniyu@amazon.com/
v1: https://lore.kernel.org/netdev/
20220927161209.32939-1-kuniyu@amazon.com/
====================
Link: https://lore.kernel.org/r/20221006185349.74777-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Kuniyuki Iwashima [Thu, 6 Oct 2022 18:53:49 +0000 (11:53 -0700)]
tcp: Fix data races around icsk->icsk_af_ops.
setsockopt(IPV6_ADDRFORM) and tcp_v6_connect() change icsk->icsk_af_ops
under lock_sock(), but tcp_(get|set)sockopt() read it locklessly. To
avoid load/store tearing, we need to add READ_ONCE() and WRITE_ONCE()
for the reads and writes.
Thanks to Eric Dumazet for providing the syzbot report:
BUG: KCSAN: data-race in tcp_setsockopt / tcp_v6_connect
write to 0xffff88813c624518 of 8 bytes by task 23936 on cpu 0:
tcp_v6_connect+0x5b3/0xce0 net/ipv6/tcp_ipv6.c:240
__inet_stream_connect+0x159/0x6d0 net/ipv4/af_inet.c:660
inet_stream_connect+0x44/0x70 net/ipv4/af_inet.c:724
__sys_connect_file net/socket.c:1976 [inline]
__sys_connect+0x197/0x1b0 net/socket.c:1993
__do_sys_connect net/socket.c:2003 [inline]
__se_sys_connect net/socket.c:2000 [inline]
__x64_sys_connect+0x3d/0x50 net/socket.c:2000
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
read to 0xffff88813c624518 of 8 bytes by task 23937 on cpu 1:
tcp_setsockopt+0x147/0x1c80 net/ipv4/tcp.c:3789
sock_common_setsockopt+0x5d/0x70 net/core/sock.c:3585
__sys_setsockopt+0x212/0x2b0 net/socket.c:2252
__do_sys_setsockopt net/socket.c:2263 [inline]
__se_sys_setsockopt net/socket.c:2260 [inline]
__x64_sys_setsockopt+0x62/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
value changed: 0xffffffff8539af68 -> 0xffffffff8539aff8
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 23937 Comm: syz-executor.5 Not tainted
6.0.0-rc4-syzkaller-00331-g4ed9c1e971b1-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine,
BIOS Google 08/26/2022
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: syzbot <syzkaller@googlegroups.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Kuniyuki Iwashima [Thu, 6 Oct 2022 18:53:48 +0000 (11:53 -0700)]
ipv6: Fix data races around sk->sk_prot.
Commit
086d49058cd8 ("ipv6: annotate some data-races around sk->sk_prot")
fixed some data-races around sk->sk_prot but it was not enough.
Some functions in inet6_(stream|dgram)_ops still access sk->sk_prot
without lock_sock() or rtnl_lock(), so they need READ_ONCE() to avoid
load tearing.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Kuniyuki Iwashima [Thu, 6 Oct 2022 18:53:47 +0000 (11:53 -0700)]
tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct().
Originally, inet6_sk(sk)->XXX were changed under lock_sock(), so we were
able to clean them up by calling inet6_destroy_sock() during the IPv6 ->
IPv4 conversion by IPV6_ADDRFORM. However, commit
03485f2adcde ("udpv6:
Add lockless sendmsg() support") added a lockless memory allocation path,
which could cause a memory leak:
setsockopt(IPV6_ADDRFORM) sendmsg()
+-----------------------+ +-------+
- do_ipv6_setsockopt(sk, ...) - udpv6_sendmsg(sk, ...)
- sockopt_lock_sock(sk) ^._ called via udpv6_prot
- lock_sock(sk) before WRITE_ONCE()
- WRITE_ONCE(sk->sk_prot, &tcp_prot)
- inet6_destroy_sock() - if (!corkreq)
- sockopt_release_sock(sk) - ip6_make_skb(sk, ...)
- release_sock(sk) ^._ lockless fast path for
the non-corking case
- __ip6_append_data(sk, ...)
- ipv6_local_rxpmtu(sk, ...)
- xchg(&np->rxpmtu, skb)
^._ rxpmtu is never freed.
- goto out_no_dst;
- lock_sock(sk)
For now, rxpmtu is only the case, but not to miss the future change
and a similar bug fixed in commit
e27326009a3d ("net: ping6: Fix
memleak in ipv6_renew_options()."), let's set a new function to IPv6
sk->sk_destruct() and call inet6_cleanup_sock() there. Since the
conversion does not change sk->sk_destruct(), we can guarantee that
we can clean up IPv6 resources finally.
We can now remove all inet6_destroy_sock() calls from IPv6 protocol
specific ->destroy() functions, but such changes are invasive to
backport. So they can be posted as a follow-up later for net-next.
Fixes:
03485f2adcde ("udpv6: Add lockless sendmsg() support")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Kuniyuki Iwashima [Thu, 6 Oct 2022 18:53:46 +0000 (11:53 -0700)]
udp: Call inet6_destroy_sock() in setsockopt(IPV6_ADDRFORM).
Commit
4b340ae20d0e ("IPv6: Complete IPV6_DONTFRAG support") forgot
to add a change to free inet6_sk(sk)->rxpmtu while converting an IPv6
socket into IPv4 with IPV6_ADDRFORM. After conversion, sk_prot is
changed to udp_prot and ->destroy() never cleans it up, resulting in
a memory leak.
This is due to the discrepancy between inet6_destroy_sock() and
IPV6_ADDRFORM, so let's call inet6_destroy_sock() from IPV6_ADDRFORM
to remove the difference.
However, this is not enough for now because rxpmtu can be changed
without lock_sock() after commit
03485f2adcde ("udpv6: Add lockless
sendmsg() support"). We will fix this case in the following patch.
Note we will rename inet6_destroy_sock() to inet6_cleanup_sock() and
remove unnecessary inet6_destroy_sock() calls in sk_prot->destroy()
in the future.
Fixes:
4b340ae20d0e ("IPv6: Complete IPV6_DONTFRAG support")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Kuniyuki Iwashima [Thu, 6 Oct 2022 18:53:45 +0000 (11:53 -0700)]
tcp/udp: Fix memory leak in ipv6_renew_options().
syzbot reported a memory leak [0] related to IPV6_ADDRFORM.
The scenario is that while one thread is converting an IPv6 socket into
IPv4 with IPV6_ADDRFORM, another thread calls do_ipv6_setsockopt() and
allocates memory to inet6_sk(sk)->XXX after conversion.
Then, the converted sk with (tcp|udp)_prot never frees the IPv6 resources,
which inet6_destroy_sock() should have cleaned up.
setsockopt(IPV6_ADDRFORM) setsockopt(IPV6_DSTOPTS)
+-----------------------+ +----------------------+
- do_ipv6_setsockopt(sk, ...)
- sockopt_lock_sock(sk) - do_ipv6_setsockopt(sk, ...)
- lock_sock(sk) ^._ called via tcpv6_prot
- WRITE_ONCE(sk->sk_prot, &tcp_prot) before WRITE_ONCE()
- xchg(&np->opt, NULL)
- txopt_put(opt)
- sockopt_release_sock(sk)
- release_sock(sk) - sockopt_lock_sock(sk)
- lock_sock(sk)
- ipv6_set_opt_hdr(sk, ...)
- ipv6_update_options(sk, opt)
- xchg(&inet6_sk(sk)->opt, opt)
^._ opt is never freed.
- sockopt_release_sock(sk)
- release_sock(sk)
Since IPV6_DSTOPTS allocates options under lock_sock(), we can avoid this
memory leak by testing whether sk_family is changed by IPV6_ADDRFORM after
acquiring the lock.
This issue exists from the initial commit between IPV6_ADDRFORM and
IPV6_PKTOPTIONS.
[0]:
BUG: memory leak
unreferenced object 0xffff888009ab9f80 (size 96):
comm "syz-executor583", pid 328, jiffies
4294916198 (age 13.034s)
hex dump (first 32 bytes):
01 00 00 00 48 00 00 00 08 00 00 00 00 00 00 00 ....H...........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<
000000002ee98ae1>] kmalloc include/linux/slab.h:605 [inline]
[<
000000002ee98ae1>] sock_kmalloc+0xb3/0x100 net/core/sock.c:2566
[<
0000000065d7b698>] ipv6_renew_options+0x21e/0x10b0 net/ipv6/exthdrs.c:1318
[<
00000000a8c756d7>] ipv6_set_opt_hdr net/ipv6/ipv6_sockglue.c:354 [inline]
[<
00000000a8c756d7>] do_ipv6_setsockopt.constprop.0+0x28b7/0x4350 net/ipv6/ipv6_sockglue.c:668
[<
000000002854d204>] ipv6_setsockopt+0xdf/0x190 net/ipv6/ipv6_sockglue.c:1021
[<
00000000e69fdcf8>] tcp_setsockopt+0x13b/0x2620 net/ipv4/tcp.c:3789
[<
0000000090da4b9b>] __sys_setsockopt+0x239/0x620 net/socket.c:2252
[<
00000000b10d192f>] __do_sys_setsockopt net/socket.c:2263 [inline]
[<
00000000b10d192f>] __se_sys_setsockopt net/socket.c:2260 [inline]
[<
00000000b10d192f>] __x64_sys_setsockopt+0xbe/0x160 net/socket.c:2260
[<
000000000a80d7aa>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<
000000000a80d7aa>] do_syscall_64+0x38/0x90 arch/x86/entry/common.c:80
[<
000000004562b5c6>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linus Torvalds [Wed, 12 Oct 2022 22:01:58 +0000 (15:01 -0700)]
Merge tag 'linux-kselftest-kunit-6.1-rc1-2' of git://git./linux/kernel/git/shuah/linux-kselftest
Pull more KUnit updates from Shuah Khan:
"Features and fixes:
- simplify resource use
- make kunit_malloc() and kunit_free() allocations and frees
consistent. kunit_free() frees only the memory allocated by
kunit_malloc()
- stop downloading risc-v opensbi binaries using wget
- other fixes and improvements to tool and KUnit framework"
* tag 'linux-kselftest-kunit-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
Documentation: kunit: Update description of --alltests option
kunit: declare kunit_assert structs as const
kunit: rename base KUNIT_ASSERTION macro to _KUNIT_FAILED
kunit: remove format func from struct kunit_assert, get it to 0 bytes
kunit: tool: Don't download risc-v opensbi firmware with wget
kunit: make kunit_kfree(NULL) a no-op to match kfree()
kunit: make kunit_kfree() not segfault on invalid inputs
kunit: make kunit_kfree() only work on pointers from kunit_malloc() and friends
kunit: drop test pointer in string_stream_fragment
kunit: string-stream: Simplify resource use
Linus Torvalds [Wed, 12 Oct 2022 21:59:13 +0000 (14:59 -0700)]
Merge tag 'linux-kselftest-next-6.1-rc1-2' of git://git./linux/kernel/git/shuah/linux-kselftest
Pull more Kselftest updates from Shuah Khan:
"This consists of fixes and improvements to memory-hotplug test and a
minor spelling fix to ftrace test"
* tag 'linux-kselftest-next-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
docs: notifier-error-inject: Correct test's name
selftests/memory-hotplug: Adjust log info for maintainability
selftests/memory-hotplug: Restore memory before exit
selftests/memory-hotplug: Add checking after online or offline
selftests/ftrace: func_event_triggers: fix typo in user message
Linus Torvalds [Wed, 12 Oct 2022 21:46:48 +0000 (14:46 -0700)]
Merge tag 'vfio-v6.1-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Prune private items from vfio_pci_core.h to a new internal header,
fix missed function rename, and refactor vfio-pci interrupt defines
(Jason Gunthorpe)
- Create consistent naming and handling of ioctls with a function per
ioctl for vfio-pci and vfio group handling, use proper type args
where available (Jason Gunthorpe)
- Implement a set of low power device feature ioctls allowing userspace
to make use of power states such as D3cold where supported (Abhishek
Sahu)
- Remove device counter on vfio groups, which had restricted the page
pinning interface to singleton groups to account for limitations in
the type1 IOMMU backend. Document usage as limited to emulated IOMMU
devices, ie. traditional mdev devices where this restriction is
consistent (Jason Gunthorpe)
- Correct function prefix in hisi_acc driver incurred during previous
refactoring (Shameer Kolothum)
- Correct typo and remove redundant warning triggers in vfio-fsl driver
(Christophe JAILLET)
- Introduce device level DMA dirty tracking uAPI and implementation in
the mlx5 variant driver (Yishai Hadas & Joao Martins)
- Move much of the vfio_device life cycle management into vfio core,
simplifying and avoiding duplication across drivers. This also
facilitates adding a struct device to vfio_device which begins the
introduction of device rather than group level user support and fills
a gap allowing userspace identify devices as vfio capable without
implicit knowledge of the driver (Kevin Tian & Yi Liu)
- Split vfio container handling to a separate file, creating a more
well defined API between the core and container code, masking IOMMU
backend implementation from the core, allowing for an easier future
transition to an iommufd based implementation of the same (Jason
Gunthorpe)
- Attempt to resolve race accessing the iommu_group for a device
between vfio releasing DMA ownership and removal of the device from
the IOMMU driver. Follow-up with support to allow vfio_group to exist
with NULL iommu_group pointer to support existing userspace use cases
of holding the group file open (Jason Gunthorpe)
- Fix error code and hi/lo register manipulation issues in the hisi_acc
variant driver, along with various code cleanups (Longfang Liu)
- Fix a prior regression in GVT-g group teardown, resulting in
unreleased resources (Jason Gunthorpe)
- A significant cleanup and simplification of the mdev interface,
consolidating much of the open coded per driver sysfs interface
support into the mdev core (Christoph Hellwig)
- Simplification of tracking and locking around vfio_groups that fall
out from previous refactoring (Jason Gunthorpe)
- Replace trivial open coded f_ops tests with new helper (Alex
Williamson)
* tag 'vfio-v6.1-rc1' of https://github.com/awilliam/linux-vfio: (77 commits)
vfio: More vfio_file_is_group() use cases
vfio: Make the group FD disassociate from the iommu_group
vfio: Hold a reference to the iommu_group in kvm for SPAPR
vfio: Add vfio_file_is_group()
vfio: Change vfio_group->group_rwsem to a mutex
vfio: Remove the vfio_group->users and users_comp
vfio/mdev: add mdev available instance checking to the core
vfio/mdev: consolidate all the description sysfs into the core code
vfio/mdev: consolidate all the available_instance sysfs into the core code
vfio/mdev: consolidate all the name sysfs into the core code
vfio/mdev: consolidate all the device_api sysfs into the core code
vfio/mdev: remove mtype_get_parent_dev
vfio/mdev: remove mdev_parent_dev
vfio/mdev: unexport mdev_bus_type
vfio/mdev: remove mdev_from_dev
vfio/mdev: simplify mdev_type handling
vfio/mdev: embedd struct mdev_parent in the parent data structure
vfio/mdev: make mdev.h standalone includable
drm/i915/gvt: simplify vgpu configuration management
drm/i915/gvt: fix a memory leak in intel_gvt_init_vgpu_types
...
Linus Torvalds [Wed, 12 Oct 2022 21:39:38 +0000 (14:39 -0700)]
Merge tag 'for-linus-6.1-rc1-tag' of git://git./linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
- Some minor typo fixes
- A fix of the Xen pcifront driver for supporting the device model to
run in a Linux stub domain
- A cleanup of the pcifront driver
- A series to enable grant-based virtio with Xen on x86
- A cleanup of Xen PV guests to distinguish between safe and faulting
MSR accesses
- Two fixes of the Xen gntdev driver
- Two fixes of the new xen grant DMA driver
* tag 'for-linus-6.1-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen: Kconfig: Fix spelling mistake "Maxmium" -> "Maximum"
xen/pv: support selecting safe/unsafe msr accesses
xen/pv: refactor msr access functions to support safe and unsafe accesses
xen/pv: fix vendor checks for pmu emulation
xen/pv: add fault recovery control to pmu msr accesses
xen/virtio: enable grant based virtio on x86
xen/virtio: use dom0 as default backend for CONFIG_XEN_VIRTIO_FORCE_GRANT
xen/virtio: restructure xen grant dma setup
xen/pcifront: move xenstore config scanning into sub-function
xen/gntdev: Accommodate VMA splitting
xen/gntdev: Prevent leaking grants
xen/virtio: Fix potential deadlock when accessing xen_grant_dma_devices
xen/virtio: Fix n_pages calculation in xen_grant_dma_map(unmap)_page()
xen/xenbus: Fix spelling mistake "hardward" -> "hardware"
xen-pcifront: Handle missed Connected state
Linus Torvalds [Wed, 12 Oct 2022 18:16:58 +0000 (11:16 -0700)]
Merge tag 'mm-hotfixes-stable-2022-10-11' of git://git./linux/kernel/git/akpm/mm
Pull misc hotfixes from Andrew Morton:
"Five hotfixes - three for nilfs2, two for MM. For are cc:stable, one
is not"
* tag 'mm-hotfixes-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
nilfs2: fix leak of nilfs_root in case of writer thread creation failure
nilfs2: fix NULL pointer dereference at nilfs_bmap_lookup_at_level()
nilfs2: fix use-after-free bug of struct nilfs_root
mm/damon/core: initialize damon_target->list in damon_new_target()
mm/hugetlb: fix races when looking up a CONT-PTE/PMD size hugetlb page
Linus Torvalds [Wed, 12 Oct 2022 18:00:22 +0000 (11:00 -0700)]
Merge tag 'mm-nonmm-stable-2022-10-11' of git://git./linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- hfs and hfsplus kmap API modernization (Fabio Francesco)
- make crash-kexec work properly when invoked from an NMI-time panic
(Valentin Schneider)
- ntfs bugfixes (Hawkins Jiawei)
- improve IPC msg scalability by replacing atomic_t's with percpu
counters (Jiebin Sun)
- nilfs2 cleanups (Minghao Chi)
- lots of other single patches all over the tree!
* tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits)
include/linux/entry-common.h: remove has_signal comment of arch_do_signal_or_restart() prototype
proc: test how it holds up with mapping'less process
mailmap: update Frank Rowand email address
ia64: mca: use strscpy() is more robust and safer
init/Kconfig: fix unmet direct dependencies
ia64: update config files
nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
fork: remove duplicate included header files
init/main.c: remove unnecessary (void*) conversions
proc: mark more files as permanent
nilfs2: remove the unneeded result variable
nilfs2: delete unnecessary checks before brelse()
checkpatch: warn for non-standard fixes tag style
usr/gen_init_cpio.c: remove unnecessary -1 values from int file
ipc/msg: mitigate the lock contention with percpu counter
percpu: add percpu_counter_add_local and percpu_counter_sub_local
fs/ocfs2: fix repeated words in comments
relay: use kvcalloc to alloc page array in relay_alloc_page_array
proc: make config PROC_CHILDREN depend on PROC_FS
fs: uninline inode_maybe_inc_iversion()
...
Steven Rostedt (Google) [Wed, 12 Oct 2022 10:40:58 +0000 (06:40 -0400)]
tracing: Fix reading strings from synthetic events
The follow commands caused a crash:
# cd /sys/kernel/tracing
# echo 's:open char file[]' > dynamic_events
# echo 'hist:keys=common_pid:file=filename:onchange($file).trace(open,$file)' > events/syscalls/sys_enter_openat/trigger'
# echo 1 > events/synthetic/open/enable
BOOM!
The problem is that the synthetic event field "char file[]" will read
the value given to it as a string without any memory checks to make sure
the address is valid. The above example will pass in the user space
address and the sythetic event code will happily call strlen() on it
and then strscpy() where either one will cause an oops when accessing
user space addresses.
Use the helper functions from trace_kprobe and trace_eprobe that can
read strings safely (and actually succeed when the address is from user
space and the memory is mapped in).
Now the above can show:
packagekitd-1721 [000] ...2. 104.597170: open: file=/usr/lib/rpm/fileattrs/cmake.attr
in:imjournal-978 [006] ...2. 104.599642: open: file=/var/lib/rsyslog/imjournal.state.tmp
packagekitd-1721 [000] ...2. 104.626308: open: file=/usr/lib/rpm/fileattrs/debuginfo.attr
Link: https://lkml.kernel.org/r/20221012104534.826549315@goodmis.org
Cc: stable@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tom Zanussi <zanussi@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Tom Zanussi <zanussi@kernel.org>
Fixes:
bd82631d7ccdc ("tracing: Add support for dynamic strings to synthetic events")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Steven Rostedt (Google) [Wed, 12 Oct 2022 10:40:57 +0000 (06:40 -0400)]
tracing: Add "(fault)" name injection to kernel probes
Have the specific functions for kernel probes that read strings to inject
the "(fault)" name directly. trace_probes.c does this too (for uprobes)
but as the code to read strings are going to be used by synthetic events
(and perhaps other utilities), it simplifies the code by making sure those
other uses do not need to implement the "(fault)" name injection as well.
Link: https://lkml.kernel.org/r/20221012104534.644803645@goodmis.org
Cc: stable@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tom Zanussi <zanussi@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Tom Zanussi <zanussi@kernel.org>
Fixes:
bd82631d7ccdc ("tracing: Add support for dynamic strings to synthetic events")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Steven Rostedt (Google) [Wed, 12 Oct 2022 10:40:56 +0000 (06:40 -0400)]
tracing: Move duplicate code of trace_kprobe/eprobe.c into header
The functions:
fetch_store_strlen_user()
fetch_store_strlen()
fetch_store_string_user()
fetch_store_string()
are identical in both trace_kprobe.c and trace_eprobe.c. Move them into
a new header file trace_probe_kernel.h to share it. This code will later
be used by the synthetic events as well.
Marked for stable as a fix for a crash in synthetic events requires it.
Link: https://lkml.kernel.org/r/20221012104534.467668078@goodmis.org
Cc: stable@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tom Zanussi <zanussi@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Tom Zanussi <zanussi@kernel.org>
Fixes:
bd82631d7ccdc ("tracing: Add support for dynamic strings to synthetic events")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Linus Torvalds [Wed, 12 Oct 2022 17:35:20 +0000 (10:35 -0700)]
Merge tag 'loongarch-6.1' of git://git./linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Use EXPLICIT_RELOCS (ABIv2.0)
- Use generic BUG() handler
- Refactor TLB/Cache operations
- Add qspinlock support
- Add perf events support
- Add kexec/kdump support
- Add BPF JIT support
- Add ACPI-based laptop driver
- Update the default config file
* tag 'loongarch-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (25 commits)
LoongArch: Update Loongson-3 default config file
LoongArch: Add ACPI-based generic laptop driver
LoongArch: Add BPF JIT support
LoongArch: Add some instruction opcodes and formats
LoongArch: Move {signed,unsigned}_imm_check() to inst.h
LoongArch: Add kdump support
LoongArch: Add kexec support
LoongArch: Use generic BUG() handler
LoongArch: Add SysRq-x (TLB Dump) support
LoongArch: Add perf events support
LoongArch: Add qspinlock support
LoongArch: Use TLB for ioremap()
LoongArch: Support access filter to /dev/mem interface
LoongArch: Refactor cache probe and flush methods
LoongArch: mm: Refactor TLB exception handlers
LoongArch: Support R_LARCH_GOT_PC_{LO12,HI20} in modules
LoongArch: Support PC-relative relocations in modules
LoongArch: Define ELF relocation types added in ABIv2.0
LoongArch: Adjust symbol addressing for AS_HAS_EXPLICIT_RELOCS
LoongArch: Add Kconfig option AS_HAS_EXPLICIT_RELOCS
...
Linus Torvalds [Wed, 12 Oct 2022 17:23:24 +0000 (10:23 -0700)]
Merge tag 'irq-core-2022-10-12' of git://git./linux/kernel/git/tip/tip
Pull interrupt updates from Thomas Gleixner:
"Core code:
- Provide a generic wrapper which can be utilized in drivers to
handle the problem of force threaded demultiplex interrupts on RT
enabled kernels. This avoids conditionals and horrible quirks in
drivers all over the place
- Fix up affected pinctrl and GPIO drivers to make them cleanly RT
safe
Interrupt drivers:
- A new driver for the FSL MU platform specific MSI implementation
- Make irqchip_init() available for pure ACPI based systems
- Provide a functional DT binding for the Realtek RTL interrupt chip
- The usual DT updates and small code improvements all over the
place"
* tag 'irq-core-2022-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
irqchip: IMX_MU_MSI should depend on ARCH_MXC
irqchip/imx-mu-msi: Fix wrong register offset for 8ulp
irqchip/ls-extirq: Fix invalid wait context by avoiding to use regmap
dt-bindings: irqchip: Describe the IMX MU block as a MSI controller
irqchip: Add IMX MU MSI controller driver
dt-bindings: irqchip: renesas,irqc: Add r8a779g0 support
irqchip/gic-v3: Fix typo in comment
dt-bindings: interrupt-controller: ti,sci-intr: Fix missing reg property in the binding
dt-bindings: irqchip: ti,sci-inta: Fix warning for missing #interrupt-cells
irqchip: Allow extra fields to be passed to IRQCHIP_PLATFORM_DRIVER_END
platform-msi: Export symbol platform_msi_create_irq_domain()
irqchip/realtek-rtl: use parent interrupts
dt-bindings: interrupt-controller: realtek,rtl-intc: require parents
irqchip/realtek-rtl: use irq_domain_add_linear()
irqchip: Make irqchip_init() usable on pure ACPI systems
bcma: gpio: Use generic_handle_irq_safe()
gpio: mlxbf2: Use generic_handle_irq_safe()
platform/x86: intel_int0002_vgpio: Use generic_handle_irq_safe()
ssb: gpio: Use generic_handle_irq_safe()
pinctrl: amd: Use generic_handle_irq_safe()
...
Jiapeng Chong [Sun, 9 Oct 2022 02:06:42 +0000 (10:06 +0800)]
ring-buffer: Fix kernel-doc
kernel/trace/ring_buffer.c:895: warning: expecting prototype for ring_buffer_nr_pages_dirty(). Prototype was for ring_buffer_nr_dirty_pages() instead.
kernel/trace/ring_buffer.c:5313: warning: expecting prototype for ring_buffer_reset_cpu(). Prototype was for ring_buffer_reset_online_cpus() instead.
kernel/trace/ring_buffer.c:5382: warning: expecting prototype for rind_buffer_empty(). Prototype was for ring_buffer_empty() instead.
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2340
Link: https://lkml.kernel.org/r/20221009020642.12506-1-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Jeremy Kerr [Wed, 12 Oct 2022 02:08:51 +0000 (10:08 +0800)]
mctp: prevent double key removal and unref
Currently, we have a bug where a simultaneous DROPTAG ioctl and socket
close may race, as we attempt to remove a key from lists twice, and
perform an unref for each removal operation. This may result in a uaf
when we attempt the second unref.
This change fixes the race by making __mctp_key_remove tolerant to being
called on a key that has already been removed from the socket/net lists,
and only performs the unref when we do the actual remove. We also need
to hold the list lock on the ioctl cleanup path.
This fix is based on a bug report and comprehensive analysis from
butt3rflyh4ck <butterflyhuangxx@gmail.com>, found via syzkaller.
Cc: stable@vger.kernel.org
Fixes:
63ed1aab3d40 ("mctp: Add SIOCMCTP{ALLOC,DROP}TAG ioctls for tag control")
Reported-by: butt3rflyh4ck <butterflyhuangxx@gmail.com>
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 12 Oct 2022 12:29:07 +0000 (13:29 +0100)]
Merge branch 'master' of git://git./linux/kernel/git/netfilter/nf
Florian Westphal says:
====================
netfilter fixes for net
This series from Phil Sutter for the *net* tree fixes a problem with a change
from the 6.1 development phase: the change to nft_fib should have used
the more recent flowic_l3mdev field. Pointed out by Guillaume Nault.
This also makes the older iptables module follow the same pattern.
Also add selftest case and avoid test failure in nft_fib.sh when the
host environment has set rp_filter=1.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Wed, 5 Oct 2022 15:34:36 +0000 (17:34 +0200)]
selftests: netfilter: Fix nft_fib.sh for all.rp_filter=1
If net.ipv4.conf.all.rp_filter is set, it overrides the per-interface
setting and thus defeats the fix from
bbe4c0896d250 ("selftests:
netfilter: disable rp_filter on router"). Unset it as well to cover that
case.
Fixes:
bbe4c0896d250 ("selftests: netfilter: disable rp_filter on router")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
Phil Sutter [Wed, 5 Oct 2022 16:07:05 +0000 (18:07 +0200)]
netfilter: rpfilter/fib: Populate flowic_l3mdev field
Use the introduced field for correct operation with VRF devices instead
of conditionally overwriting flowic_oif. This is a partial revert of
commit
b575b24b8eee3 ("netfilter: Fix rpfilter dropping vrf packets by
mistake"), implementing a simpler solution.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Phil Sutter [Wed, 5 Oct 2022 16:07:04 +0000 (18:07 +0200)]
selftests: netfilter: Test reverse path filtering
Test reverse path (filter) matches in iptables, ip6tables and nftables.
Both with a regular interface and a VRF.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Zheng Yejian [Tue, 11 Oct 2022 12:03:52 +0000 (12:03 +0000)]
ftrace: Fix char print issue in print_ip_ins()
When ftrace bug happened, following log shows every hex data in
problematic ip address:
actual:
ffffffe8:6b:
ffffffd9:01:21
But so many 'f's seem a little confusing, and that is because format
'%x' being used to print signed chars in array 'ins'. As suggested
by Joe, change to use format "%*phC" to print array 'ins'.
After this patch, the log is like:
actual: e8:6b:d9:01:21
Link: https://lkml.kernel.org/r/20221011120352.1878494-1-zhengyejian1@huawei.com
Fixes:
6c14133d2d3f ("ftrace: Do not blindly read the ip address in ftrace_bug()")
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Huacai Chen [Wed, 12 Oct 2022 08:36:23 +0000 (16:36 +0800)]
LoongArch: Update Loongson-3 default config file
1, Enable ZBOOT, KEXEC and BPF_JIT;
2, Add more patition types;
3, Add some USB Type-C options;
4, Add some common network options;
5, Add some Bluetooth device drivers;
6, Remove obsolete config options (for some detailed information, see
Link).
Link: https://lore.kernel.org/kernel-janitors/20220929090645.1389-1-lukas.bulwahn@gmail.com/
Co-developed-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Co-developed-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Co-developed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Jianmin Lv [Wed, 12 Oct 2022 08:36:20 +0000 (16:36 +0800)]
LoongArch: Add ACPI-based generic laptop driver
This add ACPI-based generic laptop driver for Loongson-3. Some of the
codes are derived from drivers/platform/x86/thinkpad_acpi.c.
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Tiezhu Yang [Wed, 12 Oct 2022 08:36:20 +0000 (16:36 +0800)]
LoongArch: Add BPF JIT support
BPF programs are normally handled by a BPF interpreter, add BPF JIT
support for LoongArch to allow the kernel to generate native code when
a program is loaded into the kernel. This will significantly speed-up
processing of BPF programs.
Co-developed-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Tiezhu Yang [Wed, 12 Oct 2022 08:36:19 +0000 (16:36 +0800)]
LoongArch: Add some instruction opcodes and formats
According to the "Table of Instruction Encoding" in LoongArch Reference
Manual [1], add some instruction opcodes and formats which are used in
the BPF JIT for LoongArch.
[1] https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#table-of-instruction-encoding
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Tiezhu Yang [Wed, 12 Oct 2022 08:36:19 +0000 (16:36 +0800)]
LoongArch: Move {signed,unsigned}_imm_check() to inst.h
{signed,unsigned}_imm_check() will also be used in the bpf jit, so move
them from module.c to inst.h, this is preparation for later patches.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Youling Tang [Wed, 12 Oct 2022 08:36:19 +0000 (16:36 +0800)]
LoongArch: Add kdump support
This patch adds support for kdump. In kdump case the normal kernel will
reserve a region for the crash kernel and jump there on panic.
Arch-specific functions are added to allow for implementing a crash dump
file interface, /proc/vmcore, which can be viewed as a ELF file.
A user-space tool, such as kexec-tools, is responsible for allocating a
separate region for the core's ELF header within the crash kdump kernel
memory and filling it in when executing kexec_load().
Then, its location will be advertised to the crash dump kernel via a
command line argument "elfcorehdr=", and the crash dump kernel will
preserve this region for later use with arch_reserve_vmcore() at boot
time.
At the same time, the crash kdump kernel is also limited within the
"crashkernel" area via a command line argument "mem=", so as not to
destroy the original kernel dump data.
In the crash dump kernel environment, /proc/vmcore is used to access the
primary kernel's memory with copy_oldmem_page().
I tested kdump on LoongArch machines (Loongson-3A5000) and it works as
expected (suggested crashkernel parameter is "crashkernel=512M@2560M"),
you may test it by triggering a crash through /proc/sysrq-trigger:
$ sudo kexec -p /boot/vmlinux-kdump --reuse-cmdline --append="nr_cpus=1"
# echo c > /proc/sysrq-trigger
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Youling Tang [Wed, 12 Oct 2022 08:36:19 +0000 (16:36 +0800)]
LoongArch: Add kexec support
Add three new files, kexec.h, machine_kexec.c and relocate_kernel.S to
the LoongArch architecture, so as to add support for the kexec re-boot
mechanism (CONFIG_KEXEC) on LoongArch platforms.
Kexec supports loading vmlinux.elf in ELF format and vmlinux.efi in PE
format.
I tested kexec on LoongArch machines (Loongson-3A5000) and it works as
expected:
$ sudo kexec -l /boot/vmlinux.efi --reuse-cmdline
$ sudo kexec -e
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Youling Tang [Wed, 12 Oct 2022 08:36:19 +0000 (16:36 +0800)]
LoongArch: Use generic BUG() handler
Inspired by commit
9fb7410f955("arm64/BUG: Use BRK instruction for
generic BUG traps"), do similar for LoongArch to use generic BUG()
handler.
This patch uses the BREAK software breakpoint instruction to generate
a trap instead, similarly to most other arches, with the generic BUG
code generating the dmesg boilerplate.
This allows bug metadata to be moved to a separate table and reduces
the amount of inline code at BUG() and WARN() sites. This also avoids
clobbering any registers before they can be dumped.
To mitigate the size of the bug table further, this patch makes use of
the existing infrastructure for encoding addresses within the bug table
as 32-bit relative pointers instead of absolute pointers.
(Note: this limits the max kernel size to 2GB.)
Before patch:
[ 3018.338013] lkdtm: Performing direct entry BUG
[ 3018.342445] Kernel bug detected[#5]:
[ 3018.345992] CPU: 2 PID: 865 Comm: cat Tainted: G D 6.0.0-rc6+ #35
After patch:
[ 125.585985] lkdtm: Performing direct entry BUG
[ 125.590433] ------------[ cut here ]------------
[ 125.595020] kernel BUG at drivers/misc/lkdtm/bugs.c:78!
[ 125.600211] Oops - BUG[#1]:
[ 125.602980] CPU: 3 PID: 410 Comm: cat Not tainted 6.0.0-rc6+ #36
Out-of-line file/line data information obtained compared to before.
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Huacai Chen [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: Add SysRq-x (TLB Dump) support
Add SysRq-x (TLB Dump) support for LoongArch, which is useful for
debugging.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Huacai Chen [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: Add perf events support
The perf events infrastructure of LoongArch is very similar to old MIPS-
based Loongson, so most of the codes are derived from MIPS.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Huacai Chen [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: Add qspinlock support
On NUMA system, the performance of qspinlock is better than generic
spinlock. Below is the UnixBench test results on a 8 nodes (4 cores
per node, 32 cores in total) machine.
A. With generic spinlock:
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0
449574022.5 38523.9
Double-Precision Whetstone 55.0 85190.4 15489.2
Execl Throughput 43.0 14696.2 3417.7
File Copy 1024 bufsize 2000 maxblocks 3960.0 143157.8 361.5
File Copy 256 bufsize 500 maxblocks 1655.0 37631.8 227.4
File Copy 4096 bufsize 8000 maxblocks 5800.0 444814.2 766.9
Pipe Throughput 12440.0
5047490.7 4057.5
Pipe-based Context Switching 4000.0
2021545.7 5053.9
Process Creation 126.0 23829.8 1891.3
Shell Scripts (1 concurrent) 42.4 33756.7 7961.5
Shell Scripts (8 concurrent) 6.0 4062.9 6771.5
System Call Overhead 15000.0
2479748.6 1653.2
========
System Benchmarks Index Score 2955.6
B. With qspinlock:
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0
449467876.9 38514.8
Double-Precision Whetstone 55.0 85174.6 15486.3
Execl Throughput 43.0 14769.1 3434.7
File Copy 1024 bufsize 2000 maxblocks 3960.0 146150.5 369.1
File Copy 256 bufsize 500 maxblocks 1655.0 37496.8 226.6
File Copy 4096 bufsize 8000 maxblocks 5800.0 447527.0 771.6
Pipe Throughput 12440.0
5175989.2 4160.8
Pipe-based Context Switching 4000.0
2207747.8 5519.4
Process Creation 126.0 25125.5 1994.1
Shell Scripts (1 concurrent) 42.4 33461.2 7891.8
Shell Scripts (8 concurrent) 6.0 4024.7 6707.8
System Call Overhead 15000.0
2917278.6 1944.9
========
System Benchmarks Index Score 3040.1
Signed-off-by: Rui Wang <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Huacai Chen [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: Use TLB for ioremap()
We can support more cache attributes (e.g., CC, SUC and WUC) and page
protection when we use TLB for ioremap(). The implementation is based
on GENERIC_IOREMAP.
The existing simple ioremap() implementation has better performance so
we keep it and introduce ARCH_IOREMAP to control the selection.
We move pagetable_init() earlier to make early ioremap() works, and we
modify the PCI ecam mapping because the TLB-based version of ioremap()
will actually take the size into account.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Huacai Chen [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: Support access filter to /dev/mem interface
Accidental access to /dev/mem is obviously disastrous, but specific
access can be used by people debugging the kernel. So select GENERIC_
LIB_DEVMEM_IS_ALLOWED, as well as define ARCH_HAS_VALID_PHYS_ADDR_RANGE
and related helpers, to support access filter to /dev/mem interface.
Signed-off-by: Weihao Li <liweihao@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Huacai Chen [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: Refactor cache probe and flush methods
Current cache probe and flush methods have some drawbacks:
1, Assume there are 3 cache levels and only 3 levels;
2, Assume L1 = I + D, L2 = V, L3 = S, V is exclusive, S is inclusive.
However, the fact is I + D, I + D + V, I + D + S and I + D + V + S are
all valid. So, refactor the cache probe and flush methods to adapt more
types of cache hierarchy.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Rui Wang [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: mm: Refactor TLB exception handlers
This patch simplifies TLB load, store and modify exception handlers:
1. Reduce instructions, such as alu/csr and memory access;
2. Execute tlb search instruction only in the fast path;
3. Return directly from the fast path for both normal and huge pages;
4. Re-tab the assembly for better vertical alignment.
And fixes the concurrent modification issue of fast path for huge pages.
This issue will occur in the following steps:
CPU-1 (In TLB exception) CPU-2 (In THP splitting)
1: Load PMD entry (HUGE=1)
2: Goto huge path
3: Store PMD entry (HUGE=0)
4: Reload PMD entry (HUGE=0)
5: Fill TLB entry (PA is incorrect)
This patch also slightly improves the TLB processing performance:
* Normal pages: 2.15%, Huge pages: 1.70%.
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
int main(int argc, char *argv[])
{
size_t page_size;
size_t mem_size;
size_t off;
void *base;
int flags;
int i;
if (argc < 2) {
fprintf(stderr, "%s MEM_SIZE [HUGE]\n", argv[0]);
return -1;
}
page_size = sysconf(_SC_PAGESIZE);
flags = MAP_PRIVATE | MAP_ANONYMOUS;
mem_size = strtoul(argv[1], NULL, 10);
if (argc > 2)
flags |= MAP_HUGETLB;
for (i = 0; i < 10; i++) {
base = mmap(NULL, mem_size, PROT_READ, flags, -1, 0);
if (base == MAP_FAILED) {
fprintf(stderr, "Map memory failed!\n");
return -1;
}
for (off = 0; off < mem_size; off += page_size)
*(volatile int *)(base + off);
munmap(base, mem_size);
}
return 0;
}
Signed-off-by: Rui Wang <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Xi Ruoyao [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: Support R_LARCH_GOT_PC_{LO12,HI20} in modules
GCC >= 13 and GNU assembler >= 2.40 use these relocations to address
external symbols, so we need to add them.
Let the module loader emit GOT entries for data symbols so we would be
able to handle GOT relocations. The GOT entry is just the data's symbol
address.
In module.lds, emit a stub .got section for a section header entry. The
actual content of the section entry will be filled at runtime by module_
frob_arch_sections().
Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Xi Ruoyao [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: Support PC-relative relocations in modules
Binutils >= 2.40 uses R_LARCH_B26 instead of R_LARCH_SOP_PUSH_PLT_PCREL,
and R_LARCH_PCALA* instead of R_LARCH_SOP_PUSH_PCREL.
Handle R_LARCH_B26 and R_LARCH_PCALA* in the module loader. For R_LARCH_
B26, also create a PLT entry as needed.
Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Xi Ruoyao [Wed, 12 Oct 2022 08:36:14 +0000 (16:36 +0800)]
LoongArch: Define ELF relocation types added in ABIv2.0
These relocation types are used by GNU binutils >= 2.40 and GCC >= 13.
Add their definitions so we will be able to use them in later patches.
Link: https://github.com/loongson/LoongArch-Documentation/pull/57
Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Xi Ruoyao [Wed, 12 Oct 2022 08:36:08 +0000 (16:36 +0800)]
LoongArch: Adjust symbol addressing for AS_HAS_EXPLICIT_RELOCS
If explicit relocation hints are used by the toolchain, -Wa,-mla-*
options will be useless for the C code. So only use them for the
!CONFIG_AS_HAS_EXPLICIT_RELOCS case.
Replace "la" with "la.pcrel" in head.S to keep the semantic consistent
with new and old toolchains for the low level startup code.
For per-CPU variables, the "address" of the symbol is actually an offset
from $r21. The value is near the loading address of main kernel image,
but far from the loading address of modules. So we use model("extreme")
attibute to tell the compiler that a PC-relative addressing with 32-bit
offset is not sufficient for local per-CPU variables.
The behavior with different assemblers and compilers are summarized in
the following table:
AS has CC has
explicit relocs explicit relocs * Behavior
==============================================================
No No Use la.* macros.
No change from Linux 6.0.
--------------------------------------------------------------
No Yes Disable explicit relocs.
No change from Linux 6.0.
--------------------------------------------------------------
Yes No Not supported.
--------------------------------------------------------------
Yes Yes Enable explicit relocs.
No -Wa,-mla* options used.
==============================================================
*: We assume CC must have model attribute if it has explicit relocs.
Both features are added in GCC 13 development cycle, so any GCC
release >= 13 should be OK. Using early GCC 13 development snapshots
may produce modules with unsupported relocations.
Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=f09482a
Link: https://gcc.gnu.org/r13-1834
Link: https://gcc.gnu.org/r13-2199
Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Xi Ruoyao [Wed, 12 Oct 2022 08:36:08 +0000 (16:36 +0800)]
LoongArch: Add Kconfig option AS_HAS_EXPLICIT_RELOCS
GNU as >= 2.40 and GCC >= 13 will support using explicit relocation
hints in the assembly code, instead of la.* macros. The usage of
explicit relocation hints can improve code generation so it's enabled
by default by GCC >= 13.
Introduce a Kconfig option AS_HAS_EXPLICIT_RELOCS as the switch for
"use explicit relocation hints or not".
Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Colin Ian King [Wed, 12 Oct 2022 08:36:08 +0000 (16:36 +0800)]
LoongArch: Kconfig: Fix spelling mistake "delibrately" -> "deliberately"
There is a spelling mistake in a commented section. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Huacai Chen [Wed, 12 Oct 2022 08:36:08 +0000 (16:36 +0800)]
LoongArch: Mark __xchg() and __cmpxchg() as __always_inline
Commit
ac7c3e4ff401 ("compiler: enable CONFIG_OPTIMIZE_INLINING
forcibly") allows compiler to uninline functions marked as 'inline'.
In case of __xchg()/__cmpxchg() this would cause to reference
BUILD_BUG(), which is an error case for catching bugs and will not
happen for correct code, if __xchg()/__cmpxchg() is inlined.
This bug can be produced with CONFIG_DEBUG_SECTION_MISMATCH enabled,
and the solution is similar to below commits:
46f1619500d0225 ("MIPS: include: Mark __xchg as __always_inline"),
88356d09904bc60 ("MIPS: include: Mark __cmpxchg as __always_inline").
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Huacai Chen [Wed, 12 Oct 2022 08:36:08 +0000 (16:36 +0800)]
LoongArch: Flush TLB earlier at initialization
Move local_flush_tlb_all() earlier (just after setup_ptwalker() and
before page allocation). This can avoid stale TLB entries misguiding
the later page allocation. Without this patch the second kernel of
kexec/kdump fails to boot SMP.
BTW, move output_pgtable_bits_defines() into tlb_init() since it has
nothing to do with tlb handler setup.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Tiezhu Yang [Wed, 12 Oct 2022 08:36:08 +0000 (16:36 +0800)]
LoongArch: Do not create sysfs control file for io master CPUs
Now io master CPUs are not hotpluggable on LoongArch, but in the current
code only /sys/devices/system/cpu/cpu0/online is not created. Let us set
the hotpluggable field of all the io master CPUs as 0, then prevent to
create sysfs control file for all the io master CPUs which confuses some
user space tools. This is similar with commit
9cce844abf07 ("MIPS: CPU#0
is not hotpluggable").
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Jianmin Lv [Wed, 12 Oct 2022 08:36:08 +0000 (16:36 +0800)]
LoongArch: Fix cpu name after CPU-hotplug
Don't overwrite the SMBIOS-provided CPU name on coming back from CPU-
hotplug (including S3/S4) if it is already initialized.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Leon Romanovsky [Tue, 11 Oct 2022 13:14:55 +0000 (16:14 +0300)]
net/mlx5: Make ASO poll CQ usable in atomic context
Poll CQ functions shouldn't sleep as they are called in atomic context.
The following splat appears once the mlx5_aso_poll_cq() is used in such
flow.
BUG: scheduling while atomic: swapper/17/0/0x00000100
Modules linked in: sch_ingress openvswitch nsh mlx5_vdpa vringh vhost_iotlb vdpa mlx5_ib mlx5_core xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter overlay rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi ib_umad rdma_cm ib_ipoib iw_cm ib_cm ib_uverbs ib_core fuse [last unloaded: mlx5_core]
CPU: 17 PID: 0 Comm: swapper/17 Tainted: G W 6.0.0-rc2+ #13
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS
rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
Call Trace:
<IRQ>
dump_stack_lvl+0x34/0x44
__schedule_bug.cold+0x47/0x53
__schedule+0x4b6/0x670
? hrtimer_start_range_ns+0x28d/0x360
schedule+0x50/0x90
schedule_hrtimeout_range_clock+0x98/0x120
? __hrtimer_init+0xb0/0xb0
usleep_range_state+0x60/0x90
mlx5_aso_poll_cq+0xad/0x190 [mlx5_core]
mlx5e_ipsec_aso_update_curlft+0x81/0xb0 [mlx5_core]
xfrm_timer_handler+0x6b/0x360
? xfrm_find_acq_byseq+0x50/0x50
__hrtimer_run_queues+0x139/0x290
hrtimer_run_softirq+0x7d/0xe0
__do_softirq+0xc7/0x272
irq_exit_rcu+0x87/0xb0
sysvec_apic_timer_interrupt+0x72/0x90
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20
RIP: 0010:default_idle+0x18/0x20
Code: ae 7d ff ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc 0f 1f 44 00 00 8b 05 b5 30 0d 01 85 c0 7e 07 0f 00 2d 0a e3 53 00 fb f4 <c3> 0f 1f 80 00 00 00 00 0f 1f 44 00 00 65 48 8b 04 25 80 ad 01 00
RSP: 0018:
ffff888100883ee0 EFLAGS:
00000242
RAX:
0000000000000001 RBX:
ffff888100849580 RCX:
4000000000000000
RDX:
0000000000000001 RSI:
0000000000000083 RDI:
000000000008863c
RBP:
0000000000000011 R08:
00000064e6977fa9 R09:
0000000000000001
R10:
0000000000000000 R11:
0000000000000000 R12:
0000000000000000
R13:
0000000000000000 R14:
0000000000000000 R15:
0000000000000000
default_idle_call+0x37/0xb0
do_idle+0x1cd/0x1e0
cpu_startup_entry+0x19/0x20
start_secondary+0xfe/0x120
secondary_startup_64_no_verify+0xcd/0xdb
</TASK>
softirq: huh, entered softirq 8 HRTIMER
00000000a97c08cb with preempt_count
00000100, exited with
00000000?
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Thomas Gleixner [Wed, 12 Oct 2022 08:14:09 +0000 (10:14 +0200)]
Merge tag 'irqchip-fixes-6.1-1' of git://git./linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip fixes from Marc Zyngier:
- Fix IMX-MU Kconfig, keeping it private to IMX
- Fix a register offset for the same IMX-MU driver
- Fix the ls-extirq irqchip driver that would use the wrong
flavour of spinlocks
Link: https://lore.kernel.org/r/20221012075125.1244143-1-maz@kernel.org
Eric Dumazet [Tue, 11 Oct 2022 22:07:48 +0000 (15:07 -0700)]
tcp: cdg: allow tcp_cdg_release() to be called multiple times
Apparently, mptcp is able to call tcp_disconnect() on an already
disconnected flow. This is generally fine, unless current congestion
control is CDG, because it might trigger a double-free [1]
Instead of fixing MPTCP, and future bugs, we can make tcp_disconnect()
more resilient.
[1]
BUG: KASAN: double-free in slab_free mm/slub.c:3539 [inline]
BUG: KASAN: double-free in kfree+0xe2/0x580 mm/slub.c:4567
CPU: 0 PID: 3645 Comm: kworker/0:7 Not tainted
6.0.0-syzkaller-02734-g0326074ff465 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Workqueue: events mptcp_worker
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:317 [inline]
print_report.cold+0x2ba/0x719 mm/kasan/report.c:433
kasan_report_invalid_free+0x81/0x190 mm/kasan/report.c:462
____kasan_slab_free+0x18b/0x1c0 mm/kasan/common.c:356
kasan_slab_free include/linux/kasan.h:200 [inline]
slab_free_hook mm/slub.c:1759 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1785
slab_free mm/slub.c:3539 [inline]
kfree+0xe2/0x580 mm/slub.c:4567
tcp_disconnect+0x980/0x1e20 net/ipv4/tcp.c:3145
__mptcp_close_ssk+0x5ca/0x7e0 net/mptcp/protocol.c:2327
mptcp_do_fastclose net/mptcp/protocol.c:2592 [inline]
mptcp_worker+0x78c/0xff0 net/mptcp/protocol.c:2627
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
Allocated by task 3671:
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:437 [inline]
____kasan_kmalloc mm/kasan/common.c:516 [inline]
____kasan_kmalloc mm/kasan/common.c:475 [inline]
__kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:525
kmalloc_array include/linux/slab.h:640 [inline]
kcalloc include/linux/slab.h:671 [inline]
tcp_cdg_init+0x10d/0x170 net/ipv4/tcp_cdg.c:380
tcp_init_congestion_control+0xab/0x550 net/ipv4/tcp_cong.c:193
tcp_reinit_congestion_control net/ipv4/tcp_cong.c:217 [inline]
tcp_set_congestion_control+0x96c/0xaa0 net/ipv4/tcp_cong.c:391
do_tcp_setsockopt+0x505/0x2320 net/ipv4/tcp.c:3513
tcp_setsockopt+0xd4/0x100 net/ipv4/tcp.c:3801
mptcp_setsockopt+0x35f/0x2570 net/mptcp/sockopt.c:844
__sys_setsockopt+0x2d6/0x690 net/socket.c:2252
__do_sys_setsockopt net/socket.c:2263 [inline]
__se_sys_setsockopt net/socket.c:2260 [inline]
__x64_sys_setsockopt+0xba/0x150 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Freed by task 16:
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track+0x21/0x30 mm/kasan/common.c:45
kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
____kasan_slab_free mm/kasan/common.c:367 [inline]
____kasan_slab_free+0x166/0x1c0 mm/kasan/common.c:329
kasan_slab_free include/linux/kasan.h:200 [inline]
slab_free_hook mm/slub.c:1759 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1785
slab_free mm/slub.c:3539 [inline]
kfree+0xe2/0x580 mm/slub.c:4567
tcp_cleanup_congestion_control+0x70/0x120 net/ipv4/tcp_cong.c:226
tcp_v4_destroy_sock+0xdd/0x750 net/ipv4/tcp_ipv4.c:2254
tcp_v6_destroy_sock+0x11/0x20 net/ipv6/tcp_ipv6.c:1969
inet_csk_destroy_sock+0x196/0x440 net/ipv4/inet_connection_sock.c:1157
tcp_done+0x23b/0x340 net/ipv4/tcp.c:4649
tcp_rcv_state_process+0x40e7/0x4990 net/ipv4/tcp_input.c:6624
tcp_v6_do_rcv+0x3fc/0x13c0 net/ipv6/tcp_ipv6.c:1525
tcp_v6_rcv+0x2e8e/0x3830 net/ipv6/tcp_ipv6.c:1759
ip6_protocol_deliver_rcu+0x2db/0x1950 net/ipv6/ip6_input.c:439
ip6_input_finish+0x14c/0x2c0 net/ipv6/ip6_input.c:484
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:493
dst_input include/net/dst.h:455 [inline]
ip6_rcv_finish+0x193/0x2c0 net/ipv6/ip6_input.c:79
ip_sabotage_in net/bridge/br_netfilter_hooks.c:874 [inline]
ip_sabotage_in+0x1fa/0x260 net/bridge/br_netfilter_hooks.c:865
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xc5/0x1f0 net/netfilter/core.c:614
nf_hook.constprop.0+0x3ac/0x650 include/linux/netfilter.h:257
NF_HOOK include/linux/netfilter.h:300 [inline]
ipv6_rcv+0x9e/0x380 net/ipv6/ip6_input.c:309
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5485
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
netif_receive_skb_internal net/core/dev.c:5685 [inline]
netif_receive_skb+0x12f/0x8d0 net/core/dev.c:5744
NF_HOOK include/linux/netfilter.h:302 [inline]
NF_HOOK include/linux/netfilter.h:296 [inline]
br_pass_frame_up+0x303/0x410 net/bridge/br_input.c:68
br_handle_frame_finish+0x909/0x1aa0 net/bridge/br_input.c:199
br_nf_hook_thresh+0x2f8/0x3d0 net/bridge/br_netfilter_hooks.c:1041
br_nf_pre_routing_finish_ipv6+0x695/0xef0 net/bridge/br_netfilter_ipv6.c:207
NF_HOOK include/linux/netfilter.h:302 [inline]
br_nf_pre_routing_ipv6+0x417/0x7c0 net/bridge/br_netfilter_ipv6.c:237
br_nf_pre_routing+0x1496/0x1fe0 net/bridge/br_netfilter_hooks.c:507
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:255 [inline]
br_handle_frame+0x9c9/0x12d0 net/bridge/br_input.c:399
__netif_receive_skb_core+0x9fe/0x38f0 net/core/dev.c:5379
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5483
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
process_backlog+0x3a0/0x7c0 net/core/dev.c:5927
__napi_poll+0xb3/0x6d0 net/core/dev.c:6494
napi_poll net/core/dev.c:6561 [inline]
net_rx_action+0x9c1/0xd90 net/core/dev.c:6672
__do_softirq+0x1d0/0x9c8 kernel/softirq.c:571
Fixes:
2b0a8c9eee81 ("tcp: add CDG congestion control")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 12 Oct 2022 08:10:02 +0000 (09:10 +0100)]
Merge branch 'inet-ping-fixes'
Eric Dumazet says:
====================
inet: ping: give ping some care
First patch fixes an ipv6 ping bug that has been there forever,
for large sizes.
Second patch fixes a recent and elusive bug, that can potentially
crash the host. This is what I mentioned privately to Paolo and
Jakub at LPC in Dublin.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>