Kuniyuki Iwashima [Fri, 22 Jul 2022 18:22:05 +0000 (11:22 -0700)]
ipv4: Fix data-races around sysctl_fib_notify_on_flag_change.
While reading sysctl_fib_notify_on_flag_change, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.
Fixes:
680aea08e78c ("net: ipv4: Emit notification when fib hardware flags are changed")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Fri, 22 Jul 2022 18:22:04 +0000 (11:22 -0700)]
tcp: Fix data-races around sysctl_tcp_reflect_tos.
While reading sysctl_tcp_reflect_tos, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.
Fixes:
ac8f1710c12b ("tcp: reflect tos value received in SYN to the socket")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Wei Wang <weiwan@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Fri, 22 Jul 2022 18:22:03 +0000 (11:22 -0700)]
tcp: Fix a data-race around sysctl_tcp_comp_sack_nr.
While reading sysctl_tcp_comp_sack_nr, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
9c21d2fc41c0 ("tcp: add tcp_comp_sack_nr sysctl")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Fri, 22 Jul 2022 18:22:02 +0000 (11:22 -0700)]
tcp: Fix a data-race around sysctl_tcp_comp_sack_slack_ns.
While reading sysctl_tcp_comp_sack_slack_ns, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its reader.
Fixes:
a70437cc09a1 ("tcp: add hrtimer slack to sack compression")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Fri, 22 Jul 2022 18:22:01 +0000 (11:22 -0700)]
tcp: Fix a data-race around sysctl_tcp_comp_sack_delay_ns.
While reading sysctl_tcp_comp_sack_delay_ns, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its reader.
Fixes:
6d82aa242092 ("tcp: add tcp_comp_sack_delay_ns sysctl")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Fri, 22 Jul 2022 18:22:00 +0000 (11:22 -0700)]
net: Fix data-races around sysctl_[rw]mem(_offset)?.
While reading these sysctl variables, they can be changed concurrently.
Thus, we need to add READ_ONCE() to their readers.
- .sysctl_rmem
- .sysctl_rwmem
- .sysctl_rmem_offset
- .sysctl_wmem_offset
- sysctl_tcp_rmem[1, 2]
- sysctl_tcp_wmem[1, 2]
- sysctl_decnet_rmem[1]
- sysctl_decnet_wmem[1]
- sysctl_tipc_rmem[1]
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Fri, 22 Jul 2022 18:21:59 +0000 (11:21 -0700)]
tcp: Fix data-races around sk_pacing_rate.
While reading sysctl_tcp_pacing_(ss|ca)_ratio, they can be changed
concurrently. Thus, we need to add READ_ONCE() to their readers.
Fixes:
43e122b014c9 ("tcp: refine pacing rate determination")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Taehee Yoo [Fri, 22 Jul 2022 17:06:35 +0000 (17:06 +0000)]
net: mld: fix reference count leak in mld_{query | report}_work()
mld_{query | report}_work() processes queued events.
If there are too many events in the queue, it re-queue a work.
And then, it returns without in6_dev_put().
But if queuing is failed, it should call in6_dev_put(), but it doesn't.
So, a reference count leak would occur.
THREAD0 THREAD1
mld_report_work()
spin_lock_bh()
if (!mod_delayed_work())
in6_dev_hold();
spin_unlock_bh()
spin_lock_bh()
schedule_delayed_work()
spin_unlock_bh()
Script to reproduce(by Hangbin Liu):
ip netns add ns1
ip netns add ns2
ip netns exec ns1 sysctl -w net.ipv6.conf.all.force_mld_version=1
ip netns exec ns2 sysctl -w net.ipv6.conf.all.force_mld_version=1
ip -n ns1 link add veth0 type veth peer name veth0 netns ns2
ip -n ns1 link set veth0 up
ip -n ns2 link set veth0 up
for i in `seq 50`; do
for j in `seq 100`; do
ip -n ns1 addr add 2021:${i}::${j}/64 dev veth0
ip -n ns2 addr add 2022:${i}::${j}/64 dev veth0
done
done
modprobe -r veth
ip -a netns del
splat looks like:
unregister_netdevice: waiting for veth0 to become free. Usage count = 2
leaked reference.
ipv6_add_dev+0x324/0xec0
addrconf_notify+0x481/0xd10
raw_notifier_call_chain+0xe3/0x120
call_netdevice_notifiers+0x106/0x160
register_netdevice+0x114c/0x16b0
veth_newlink+0x48b/0xa50 [veth]
rtnl_newlink+0x11a2/0x1a40
rtnetlink_rcv_msg+0x63f/0xc00
netlink_rcv_skb+0x1df/0x3e0
netlink_unicast+0x5de/0x850
netlink_sendmsg+0x6c9/0xa90
____sys_sendmsg+0x76a/0x780
__sys_sendmsg+0x27c/0x340
do_syscall_64+0x43/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Tested-by: Hangbin Liu <liuhangbin@gmail.com>
Fixes:
f185de28d9ae ("mld: add new workqueues for process mld events")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jianglei Nie [Fri, 22 Jul 2022 09:29:02 +0000 (17:29 +0800)]
net: macsec: fix potential resource leak in macsec_add_rxsa() and macsec_add_txsa()
init_rx_sa() allocates relevant resource for rx_sa->stats and rx_sa->
key.tfm with alloc_percpu() and macsec_alloc_tfm(). When some error
occurs after init_rx_sa() is called in macsec_add_rxsa(), the function
released rx_sa with kfree() without releasing rx_sa->stats and rx_sa->
key.tfm, which will lead to a resource leak.
We should call macsec_rxsa_put() instead of kfree() to decrease the ref
count of rx_sa and release the relevant resource if the refcount is 0.
The same bug exists in macsec_add_txsa() for tx_sa as well. This patch
fixes the above two bugs.
Fixes:
3cf3227a21d1 ("net: macsec: hardware offloading infrastructure")
Signed-off-by: Jianglei Nie <niejianglei2021@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 25 Jul 2022 10:49:25 +0000 (11:49 +0100)]
Merge branch 'macsec-config-issues'
Sabrina Dubroca says:
====================
macsec: fix config issues
The patch adding netlink support for XPN (commit
48ef50fa866a
("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)"))
introduced several issues, including a kernel panic reported at [1].
Reproducing those bugs with upstream iproute is limited, since iproute
doesn't currently support XPN. I'm also working on this.
[1] https://bugzilla.kernel.org/show_bug.cgi?id=208315
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Fri, 22 Jul 2022 09:16:30 +0000 (11:16 +0200)]
macsec: always read MACSEC_SA_ATTR_PN as a u64
Currently, MACSEC_SA_ATTR_PN is handled inconsistently, sometimes as a
u32, sometimes forced into a u64 without checking the actual length of
the attribute. Instead, we can use nla_get_u64 everywhere, which will
read up to 64 bits into a u64, capped by the actual length of the
attribute coming from userspace.
This fixes several issues:
- the check in validate_add_rxsa doesn't work with 32-bit attributes
- the checks in validate_add_txsa and validate_upd_sa incorrectly
reject X << 32 (with X != 0)
Fixes:
48ef50fa866a ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Fri, 22 Jul 2022 09:16:29 +0000 (11:16 +0200)]
macsec: limit replay window size with XPN
IEEE 802.1AEbw-2013 (section 10.7.8) specifies that the maximum value
of the replay window is 2^30-1, to help with recovery of the upper
bits of the PN.
To avoid leaving the existing macsec device in an inconsistent state
if this test fails during changelink, reuse the cleanup mechanism
introduced for HW offload. This wasn't needed until now because
macsec_changelink_common could not fail during changelink, as
modifying the cipher suite was not allowed.
Finally, this must happen after handling IFLA_MACSEC_CIPHER_SUITE so
that secy->xpn is set.
Fixes:
48ef50fa866a ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Fri, 22 Jul 2022 09:16:28 +0000 (11:16 +0200)]
macsec: fix error message in macsec_add_rxsa and _txsa
The expected length is MACSEC_SALT_LEN, not MACSEC_SA_ATTR_SALT.
Fixes:
48ef50fa866a ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Fri, 22 Jul 2022 09:16:27 +0000 (11:16 +0200)]
macsec: fix NULL deref in macsec_add_rxsa
Commit
48ef50fa866a added a test on tb_sa[MACSEC_SA_ATTR_PN], but
nothing guarantees that it's not NULL at this point. The same code was
added to macsec_add_txsa, but there it's not a problem because
validate_add_txsa checks that the MACSEC_SA_ATTR_PN attribute is
present.
Note: it's not possible to reproduce with iproute, because iproute
doesn't allow creating an SA without specifying the PN.
Fixes:
48ef50fa866a ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=208315
Reported-by: Frantisek Sumsal <fsumsal@redhat.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Slark Xiao [Fri, 22 Jul 2022 09:38:34 +0000 (17:38 +0800)]
s390/qeth: Fix typo 'the the' in comment
Replace 'the the' with 'the' in the comment.
Signed-off-by: Slark Xiao <slark_xiao@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Slark Xiao [Fri, 22 Jul 2022 08:22:27 +0000 (16:22 +0800)]
net: ipa: Fix typo 'the the' in comment
Replace 'the the' with 'the' in the comment.
Signed-off-by: Slark Xiao <slark_xiao@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Slark Xiao [Fri, 22 Jul 2022 08:20:27 +0000 (16:20 +0800)]
nfp: bpf: Fix typo 'the the' in comment
Replace 'the the' with 'the' in the comment.
Signed-off-by: Slark Xiao <slark_xiao@163.com>
Acked-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Thu, 21 Jul 2022 14:35:46 +0000 (10:35 -0400)]
Documentation: fix sctp_wmem in ip-sysctl.rst
Since commit
1033990ac5b2 ("sctp: implement memory accounting on tx path"),
SCTP has supported memory accounting on tx path where 'sctp_wmem' is used
by sk_wmem_schedule(). So we should fix the description for this option in
ip-sysctl.rst accordingly.
v1->v2:
- Improve the description as Marcelo suggested.
Fixes:
1033990ac5b2 ("sctp: implement memory accounting on tx path")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Maxim Mikityanskiy [Thu, 21 Jul 2022 09:11:27 +0000 (12:11 +0300)]
net/tls: Remove the context from the list in tls_device_down
tls_device_down takes a reference on all contexts it's going to move to
the degraded state (software fallback). If sk_destruct runs afterwards,
it can reduce the reference counter back to 1 and return early without
destroying the context. Then tls_device_down will release the reference
it took and call tls_device_free_ctx. However, the context will still
stay in tls_device_down_list forever. The list will contain an item,
memory for which is released, making a memory corruption possible.
Fix the above bug by properly removing the context from all lists before
any call to tls_device_free_ctx.
Fixes:
3740651bf7e2 ("tls: Fix context leak on tls_device_down")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Wang [Thu, 21 Jul 2022 20:44:04 +0000 (20:44 +0000)]
Revert "tcp: change pingpong threshold to 3"
This reverts commit
4a41f453bedfd5e9cd040bad509d9da49feb3e2c.
This to-be-reverted commit was meant to apply a stricter rule for the
stack to enter pingpong mode. However, the condition used to check for
interactive session "before(tp->lsndtime, icsk->icsk_ack.lrcvtime)" is
jiffy based and might be too coarse, which delays the stack entering
pingpong mode.
We revert this patch so that we no longer use the above condition to
determine interactive session, and also reduce pingpong threshold to 1.
Fixes:
4a41f453bedf ("tcp: change pingpong threshold to 3")
Reported-by: LemmyHuang <hlm3280@163.com>
Suggested-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220721204404.388396-1-weiwan@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Christophe JAILLET [Wed, 20 Jul 2022 19:49:46 +0000 (21:49 +0200)]
caif: Fix bitmap data type in "struct caifsock"
Bitmap are "unsigned long", so use it instead of a "u32" to make things
more explicit.
While at it, remove some useless cast (and leading spaces) when using the
bitmap API.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rob Herring [Tue, 19 Jul 2022 21:51:08 +0000 (15:51 -0600)]
dt-bindings: net: fsl,fec: Add missing types to phy-reset-* properties
The phy-reset-* properties are missing type definitions and are not common
properties. Even though they are deprecated, a type is needed.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rob Herring [Tue, 19 Jul 2022 21:50:59 +0000 (15:50 -0600)]
dt-bindings: net: ethernet-controller: Rework 'fixed-link' schema
While the if/then schemas mostly work, there's a few issues. The 'allOf'
schema will also be true if 'fixed-link' is not an array or object as a
false 'if' schema (without an 'else') will be true. In the array case
doesn't set the type (uint32-array) in the 'then' clause. In the node case,
'additionalProperties' is missing.
Rework the schema to use oneOf with each possible type.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 22 Jul 2022 11:06:18 +0000 (12:06 +0100)]
Merge branch 'sysctl-races-part-5'
Kuniyuki Iwashima says:
====================
sysctl: Fix data-races around ipv4_net_table (Round 5).
This series fixes data-races around 15 knobs after tcp_dsack in
ipv4_net_table.
tcp_tso_win_divisor was skipped because it already uses READ_ONCE().
So, the final round for ipv4_net_table will start with tcp_pacing_ss_ratio.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:26 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_invalid_ratelimit.
While reading sysctl_tcp_invalid_ratelimit, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its reader.
Fixes:
032ee4236954 ("tcp: helpers to mitigate ACK loops by rate-limiting out-of-window dupacks")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:25 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_autocorking.
While reading sysctl_tcp_autocorking, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
f54b311142a9 ("tcp: auto corking")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:24 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_min_rtt_wlen.
While reading sysctl_tcp_min_rtt_wlen, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
f672258391b4 ("tcp: track min RTT using windowed min-filter")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:23 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_tso_rtt_log.
While reading sysctl_tcp_tso_rtt_log, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
65466904b015 ("tcp: adjust TSO packet sizes based on min_rtt")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:22 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_min_tso_segs.
While reading sysctl_tcp_min_tso_segs, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
95bd09eb2750 ("tcp: TSO packets automatic sizing")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:21 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_challenge_ack_limit.
While reading sysctl_tcp_challenge_ack_limit, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its reader.
Fixes:
282f23c6ee34 ("tcp: implement RFC 5961 3.2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:20 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_limit_output_bytes.
While reading sysctl_tcp_limit_output_bytes, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its reader.
Fixes:
46d3ceabd8d9 ("tcp: TCP Small Queues")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:19 +0000 (09:50 -0700)]
tcp: Fix data-races around sysctl_tcp_workaround_signed_windows.
While reading sysctl_tcp_workaround_signed_windows, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.
Fixes:
15d99e02baba ("[TCP]: sysctl to allow TCP window > 32767 sans wscale")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:18 +0000 (09:50 -0700)]
tcp: Fix data-races around sysctl_tcp_moderate_rcvbuf.
While reading sysctl_tcp_moderate_rcvbuf, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:17 +0000 (09:50 -0700)]
tcp: Fix data-races around sysctl_tcp_no_ssthresh_metrics_save.
While reading sysctl_tcp_no_ssthresh_metrics_save, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.
Fixes:
65e6d90168f3 ("net-tcp: Disable TCP ssthresh metrics cache by default")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:16 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_nometrics_save.
While reading sysctl_tcp_nometrics_save, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:15 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_frto.
While reading sysctl_tcp_frto, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:14 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_adv_win_scale.
While reading sysctl_tcp_adv_win_scale, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:13 +0000 (09:50 -0700)]
tcp: Fix a data-race around sysctl_tcp_app_win.
While reading sysctl_tcp_app_win, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Wed, 20 Jul 2022 16:50:12 +0000 (09:50 -0700)]
tcp: Fix data-races around sysctl_tcp_dsack.
While reading sysctl_tcp_dsack, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Liang He [Wed, 20 Jul 2022 13:10:03 +0000 (21:10 +0800)]
net: sungem_phy: Add of_node_put() for reference returned by of_get_parent()
In bcm5421_init(), we should call of_node_put() for the reference
returned by of_get_parent() which has increased the refcount.
Fixes:
3c326fe9cb7a ("[PATCH] ppc64: Add new PHY to sungem")
Signed-off-by: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220720131003.1287426-1-windhl@126.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 20 Jul 2022 11:20:57 +0000 (14:20 +0300)]
net: pcs: xpcs: propagate xpcs_read error to xpcs_get_state_c37_sgmii
While phylink_pcs_ops :: pcs_get_state does return void, xpcs_get_state()
does check for a non-zero return code from xpcs_get_state_c37_sgmii()
and prints that as a message to the kernel log.
However, a non-zero return code from xpcs_read() is translated into
"return false" (i.e. zero as int) and the I/O error is therefore not
printed. Fix that.
Fixes:
b97b5331b8ab ("net: pcs: add C37 SGMII AN support for intel mGbE controller")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20220720112057.3504398-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linus Torvalds [Thu, 21 Jul 2022 18:08:35 +0000 (11:08 -0700)]
Merge tag 'net-5.19-rc8' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from can.
Still no major regressions, most of the changes are still due to data
races fixes, plus the usual bunch of drivers fixes.
Previous releases - regressions:
- tcp/udp: make early_demux back namespacified.
- dsa: fix issues with vlan_filtering_is_global
Previous releases - always broken:
- ip: fix data-races around ipv4_net_table (round 2, 3 & 4)
- amt: fix validation and synchronization bugs
- can: fix detection of mcp251863
- eth: iavf: fix handling of dummy receive descriptors
- eth: lan966x: fix issues with MAC table
- eth: stmmac: dwmac-mediatek: fix clock issue
Misc:
- dsa: update documentation"
* tag 'net-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (107 commits)
mlxsw: spectrum_router: Fix IPv4 nexthop gateway indication
net/sched: cls_api: Fix flow action initialization
tcp: Fix data-races around sysctl_tcp_max_reordering.
tcp: Fix a data-race around sysctl_tcp_abort_on_overflow.
tcp: Fix a data-race around sysctl_tcp_rfc1337.
tcp: Fix a data-race around sysctl_tcp_stdurg.
tcp: Fix a data-race around sysctl_tcp_retrans_collapse.
tcp: Fix data-races around sysctl_tcp_slow_start_after_idle.
tcp: Fix a data-race around sysctl_tcp_thin_linear_timeouts.
tcp: Fix data-races around sysctl_tcp_recovery.
tcp: Fix a data-race around sysctl_tcp_early_retrans.
tcp: Fix data-races around sysctl knobs related to SYN option.
udp: Fix a data-race around sysctl_udp_l3mdev_accept.
ip: Fix data-races around sysctl_ip_prot_sock.
ipv4: Fix data-races around sysctl_fib_multipath_hash_fields.
ipv4: Fix data-races around sysctl_fib_multipath_hash_policy.
ipv4: Fix a data-race around sysctl_fib_multipath_use_neigh.
can: rcar_canfd: Add missing of_node_put() in rcar_canfd_probe()
can: mcp251xfd: fix detection of mcp251863
Documentation: fix udp_wmem_min in ip-sysctl.rst
...
Peter Zijlstra [Fri, 8 Jul 2022 07:18:06 +0000 (09:18 +0200)]
mmu_gather: Force tlb-flush VM_PFNMAP vmas
Jann reported a race between munmap() and unmap_mapping_range(), where
unmap_mapping_range() will no-op once unmap_vmas() has unlinked the
VMA; however munmap() will not yet have invalidated the TLBs.
Therefore unmap_mapping_range() will complete while there are still
(stale) TLB entries for the specified range.
Mitigate this by force flushing TLBs for VM_PFNMAP ranges.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Peter Zijlstra [Fri, 8 Jul 2022 07:18:05 +0000 (09:18 +0200)]
mmu_gather: Let there be one tlb_{start,end}_vma() implementation
Now that architectures are no longer allowed to override
tlb_{start,end}_vma() re-arrange code so that there is only one
implementation for each of these functions.
This much simplifies trying to figure out what they actually do.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Peter Zijlstra [Fri, 8 Jul 2022 07:18:04 +0000 (09:18 +0200)]
csky/tlb: Remove tlb_flush() define
The previous patch removed the tlb_flush_end() implementation which
used tlb_flush_range(). This means:
- csky did double invalidates, a range invalidate per vma and a full
invalidate at the end
- csky actually has range invalidates and as such the generic
tlb_flush implementation is more efficient for it.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Tested-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Peter Zijlstra [Fri, 8 Jul 2022 07:18:03 +0000 (09:18 +0200)]
mmu_gather: Remove per arch tlb_{start,end}_vma()
Scattered across the archs are 3 basic forms of tlb_{start,end}_vma().
Provide two new MMU_GATHER_knobs to enumerate them and remove the per
arch tlb_{start,end}_vma() implementations.
- MMU_GATHER_NO_FLUSH_CACHE indicates the arch has flush_cache_range()
but does *NOT* want to call it for each VMA.
- MMU_GATHER_MERGE_VMAS indicates the arch wants to merge the
invalidate across multiple VMAs if possible.
With these it is possible to capture the three forms:
1) empty stubs;
select MMU_GATHER_NO_FLUSH_CACHE and MMU_GATHER_MERGE_VMAS
2) start: flush_cache_range(), end: empty;
select MMU_GATHER_MERGE_VMAS
3) start: flush_cache_range(), end: flush_tlb_range();
default
Obviously, if the architecture does not have flush_cache_range() then
it also doesn't need to select MMU_GATHER_NO_FLUSH_CACHE.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Khalid Masum [Thu, 21 Jul 2022 09:30:42 +0000 (15:30 +0600)]
scripts/gdb: Fix gdb 'lx-symbols' command
Currently the command 'lx-symbols' in gdb exits with the error`Function
"do_init_module" not defined in "kernel/module.c"`. This occurs because
the file kernel/module.c was moved to kernel/module/main.c.
Fix this breakage by changing the path to "kernel/module/main.c" in
LoadModuleBreakpoint.
Signed-off-by: Khalid Masum <khalid.masum.92@gmail.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Fixes:
cfc1d277891e ("module: Move all into module/")
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 21 Jul 2022 17:30:14 +0000 (10:30 -0700)]
watch-queue: remove spurious double semicolon
Sedat Dilek noticed that I had an extraneous semicolon at the end of a
line in the previous patch.
It's harmless, but unintentional, and while compilers just treat it as
an extra empty statement, for all I know some other tooling might warn
about it. So clean it up before other people notice too ;)
Fixes:
353f7988dd84 ("watchqueue: make sure to serialize 'wqueue->defunct' properly")
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Linus Torvalds [Tue, 19 Jul 2022 18:09:01 +0000 (11:09 -0700)]
watchqueue: make sure to serialize 'wqueue->defunct' properly
When the pipe is closed, we mark the associated watchqueue defunct by
calling watch_queue_clear(). However, while that is protected by the
watchqueue lock, new watchqueue entries aren't actually added under that
lock at all: they use the pipe->rd_wait.lock instead, and looking up
that pipe happens without any locking.
The watchqueue code uses the RCU read-side section to make sure that the
wqueue entry itself hasn't disappeared, but that does not protect the
pipe_info in any way.
So make sure to actually hold the wqueue lock when posting watch events,
properly serializing against the pipe being torn down.
Reported-by: Noam Rathaus <noamr@ssd-disclosure.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eric Snowberg [Wed, 20 Jul 2022 16:40:27 +0000 (12:40 -0400)]
lockdown: Fix kexec lockdown bypass with ima policy
The lockdown LSM is primarily used in conjunction with UEFI Secure Boot.
This LSM may also be used on machines without UEFI. It can also be
enabled when UEFI Secure Boot is disabled. One of lockdown's features
is to prevent kexec from loading untrusted kernels. Lockdown can be
enabled through a bootparam or after the kernel has booted through
securityfs.
If IMA appraisal is used with the "ima_appraise=log" boot param,
lockdown can be defeated with kexec on any machine when Secure Boot is
disabled or unavailable. IMA prevents setting "ima_appraise=log" from
the boot param when Secure Boot is enabled, but this does not cover
cases where lockdown is used without Secure Boot.
To defeat lockdown, boot without Secure Boot and add ima_appraise=log to
the kernel command line; then:
$ echo "integrity" > /sys/kernel/security/lockdown
$ echo "appraise func=KEXEC_KERNEL_CHECK appraise_type=imasig" > \
/sys/kernel/security/ima/policy
$ kexec -ls unsigned-kernel
Add a call to verify ima appraisal is set to "enforce" whenever lockdown
is enabled. This fixes CVE-2022-21505.
Cc: stable@vger.kernel.org
Fixes:
29d3c1c8dfe7 ("kexec: Allow kexec_file() with appropriate IMA policy when locked down")
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Acked-by: Mimi Zohar <zohar@linux.ibm.com>
Reviewed-by: John Haxby <john.haxby@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David S. Miller [Wed, 20 Jul 2022 10:13:54 +0000 (11:13 +0100)]
Merge tag 'linux-can-fixes-for-5.19-
20220720' of git://git./linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
this is a pull request of 2 patches for net/master.
The first patch is by me and fixes the detection of the mcp251863 in
the mcp251xfd driver.
The last patch is by Liang He and adds a missing of_node_put() in the
rcar_canfd driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 19 Jul 2022 12:26:26 +0000 (15:26 +0300)]
mlxsw: spectrum_router: Fix IPv4 nexthop gateway indication
mlxsw needs to distinguish nexthops with a gateway from connected
nexthops in order to write the former to the adjacency table of the
device. The check used to rely on the fact that nexthops with a gateway
have a 'link' scope whereas connected nexthops have a 'host' scope. This
is no longer correct after commit
747c14307214 ("ip: fix dflt addr
selection for connected nexthop").
Fix that by instead checking the address family of the gateway IP. This
is a more direct way and also consistent with the IPv6 counterpart in
mlxsw_sp_rt6_is_gateway().
Cc: stable@vger.kernel.org
Fixes:
747c14307214 ("ip: fix dflt addr selection for connected nexthop")
Fixes:
597cfe4fc339 ("nexthop: Add support for IPv4 nexthops")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Oz Shlomo [Tue, 19 Jul 2022 12:24:09 +0000 (15:24 +0300)]
net/sched: cls_api: Fix flow action initialization
The cited commit refactored the flow action initialization sequence to
use an interface method when translating tc action instances to flow
offload objects. The refactored version skips the initialization of the
generic flow action attributes for tc actions, such as pedit, that allocate
more than one offload entry. This can cause potential issues for drivers
mapping flow action ids.
Populate the generic flow action fields for all the flow action entries.
Fixes:
c54e1d920f04 ("flow_offload: add ops to tc_action_ops for flow action setup")
Signed-off-by: Oz Shlomo <ozsh@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
----
v1 -> v2:
- coalese the generic flow action fields initialization to a single loop
Reviewed-by: Baowen Zheng <baowen.zheng@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 20 Jul 2022 09:14:50 +0000 (10:14 +0100)]
Merge branch 'net-sysctl-races-round-4'
Kuniyuki Iwashima says:
====================
sysctl: Fix data-races around ipv4_net_table (Round 4).
This series fixes data-races around 17 knobs after fib_multipath_use_neigh
in ipv4_net_table.
tcp_fack was skipped because it's obsolete and there's no readers.
So, round 5 will start with tcp_dsack, 2 rounds left for 27 knobs.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:53 +0000 (10:26 -0700)]
tcp: Fix data-races around sysctl_tcp_max_reordering.
While reading sysctl_tcp_max_reordering, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.
Fixes:
dca145ffaa8d ("tcp: allow for bigger reordering level")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:52 +0000 (10:26 -0700)]
tcp: Fix a data-race around sysctl_tcp_abort_on_overflow.
While reading sysctl_tcp_abort_on_overflow, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:51 +0000 (10:26 -0700)]
tcp: Fix a data-race around sysctl_tcp_rfc1337.
While reading sysctl_tcp_rfc1337, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:50 +0000 (10:26 -0700)]
tcp: Fix a data-race around sysctl_tcp_stdurg.
While reading sysctl_tcp_stdurg, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:49 +0000 (10:26 -0700)]
tcp: Fix a data-race around sysctl_tcp_retrans_collapse.
While reading sysctl_tcp_retrans_collapse, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its reader.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:48 +0000 (10:26 -0700)]
tcp: Fix data-races around sysctl_tcp_slow_start_after_idle.
While reading sysctl_tcp_slow_start_after_idle, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.
Fixes:
35089bb203f4 ("[TCP]: Add tcp_slow_start_after_idle sysctl.")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:47 +0000 (10:26 -0700)]
tcp: Fix a data-race around sysctl_tcp_thin_linear_timeouts.
While reading sysctl_tcp_thin_linear_timeouts, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its reader.
Fixes:
36e31b0af587 ("net: TCP thin linear timeouts")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:46 +0000 (10:26 -0700)]
tcp: Fix data-races around sysctl_tcp_recovery.
While reading sysctl_tcp_recovery, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.
Fixes:
4f41b1c58a32 ("tcp: use RACK to detect losses")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:45 +0000 (10:26 -0700)]
tcp: Fix a data-race around sysctl_tcp_early_retrans.
While reading sysctl_tcp_early_retrans, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
eed530b6c676 ("tcp: early retransmit")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:44 +0000 (10:26 -0700)]
tcp: Fix data-races around sysctl knobs related to SYN option.
While reading these knobs, they can be changed concurrently.
Thus, we need to add READ_ONCE() to their readers.
- tcp_sack
- tcp_window_scaling
- tcp_timestamps
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:43 +0000 (10:26 -0700)]
udp: Fix a data-race around sysctl_udp_l3mdev_accept.
While reading sysctl_udp_l3mdev_accept, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes:
63a6fff353d0 ("net: Avoid receiving packets with an l3mdev on unbound UDP sockets")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:42 +0000 (10:26 -0700)]
ip: Fix data-races around sysctl_ip_prot_sock.
sysctl_ip_prot_sock is accessed concurrently, and there is always a chance
of data-race. So, all readers and writers need some basic protection to
avoid load/store-tearing.
Fixes:
4548b683b781 ("Introduce a sysctl that modifies the value of PROT_SOCK.")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:41 +0000 (10:26 -0700)]
ipv4: Fix data-races around sysctl_fib_multipath_hash_fields.
While reading sysctl_fib_multipath_hash_fields, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.
Fixes:
ce5c9c20d364 ("ipv4: Add a sysctl to control multipath hash fields")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:40 +0000 (10:26 -0700)]
ipv4: Fix data-races around sysctl_fib_multipath_hash_policy.
While reading sysctl_fib_multipath_hash_policy, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.
Fixes:
bf4e0a3db97e ("net: ipv4: add support for ECMP hash policy choice")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuniyuki Iwashima [Mon, 18 Jul 2022 17:26:39 +0000 (10:26 -0700)]
ipv4: Fix a data-race around sysctl_fib_multipath_use_neigh.
While reading sysctl_fib_multipath_use_neigh, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its reader.
Fixes:
a6db4494d218 ("net: ipv4: Consider failed nexthops in multipath routes")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 20 Jul 2022 09:11:58 +0000 (10:11 +0100)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec
Steffen Klassert says:
====================
pull request (net): ipsec 2022-07-20
1) Fix a policy refcount imbalance in xfrm_bundle_lookup.
From Hangyu Hua.
2) Fix some clang -Wformat warnings.
Justin Stitt
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Liang He [Tue, 12 Jul 2022 09:56:23 +0000 (17:56 +0800)]
can: rcar_canfd: Add missing of_node_put() in rcar_canfd_probe()
We should use of_node_put() for the reference returned by
of_get_child_by_name() which has increased the refcount.
Fixes:
45721c406dcf ("can: rcar_canfd: Add support for r8a779a0 SoC")
Link: https://lore.kernel.org/all/20220712095623.364287-1-windhl@126.com
Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 5 Jul 2022 19:30:38 +0000 (21:30 +0200)]
can: mcp251xfd: fix detection of mcp251863
In commit
c6f2a617a0a8 ("can: mcp251xfd: add support for mcp251863")
support for the mcp251863 was added. However it was not taken into
account that the auto detection of the chip model cannot distinguish
between mcp2518fd and mcp251863 and would lead to a warning message if
the firmware specifies a mcp251863.
Fix auto detection: If a mcp2518fd compatible chip is found, keep the
mcp251863 if specified by firmware, use mcp2518fd instead.
Link: https://lore.kernel.org/all/20220706064835.1848864-1-mkl@pengutronix.de
Fixes:
c6f2a617a0a8 ("can: mcp251xfd: add support for mcp251863")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Jakub Kicinski [Wed, 20 Jul 2022 00:43:02 +0000 (17:43 -0700)]
Merge branch '40GbE' of git://git./linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2022-07-18
This series contains updates to iavf driver only.
Przemyslaw fixes handling of multiple VLAN requests to account for
individual errors instead of rejecting them all. He removes incorrect
implementations of ETHTOOL_COALESCE_MAX_FRAMES and
ETHTOOL_COALESCE_MAX_FRAMES_IRQ.
He also corrects an issue with NULL pointer caused by improper handling of
dummy receive descriptors. Finally, he corrects debug prints reporting an
unknown state.
* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
iavf: Fix missing state logs
iavf: Fix handling of dummy receive descriptors
iavf: Disallow changing rx/tx-frames and rx/tx-frames-irq
iavf: Fix VLAN_V2 addition/rejection
====================
Link: https://lore.kernel.org/r/20220718174807.4113582-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Xin Long [Mon, 18 Jul 2022 17:56:59 +0000 (13:56 -0400)]
Documentation: fix udp_wmem_min in ip-sysctl.rst
UDP doesn't support tx memory accounting, and sysctl udp_wmem_min
is not really used anywhere. So we should fix the description in
ip-sysctl.rst accordingly.
Fixes:
95766fff6b9a ("[UDP]: Add memory accounting.")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/c880a963d9b1fb5f442ae3c9e4dfa70d45296a16.1658167019.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Lorenzo Bianconi [Mon, 18 Jul 2022 09:51:53 +0000 (11:51 +0200)]
net: ethernet: mtk_ppe: fix possible NULL pointer dereference in mtk_flow_get_wdma_info
odev pointer can be NULL in mtk_flow_offload_replace routine according
to the flower action rules. Fix possible NULL pointer dereference in
mtk_flow_get_wdma_info.
Fixes:
a333215e10cb5 ("net: ethernet: mtk_eth_soc: implement flow offloading to WED devices")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/4e1685bc4976e21e364055f6bee86261f8f9ee93.1658137753.git.lorenzo@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Hayes Wang [Mon, 18 Jul 2022 08:21:20 +0000 (16:21 +0800)]
r8152: fix a WOL issue
This fixes that the platform is waked by an unexpected packet. The
size and range of FIFO is different when the device enters S3 state,
so it is necessary to correct some settings when suspending.
Regardless of jumbo frame, set RMS to 1522 and MTPS to MTPS_DEFAULT.
Besides, enable MCU_BORW_EN to update the method of calculating the
pointer of data. Then, the hardware could get the correct data.
Fixes:
195aae321c82 ("r8152: support new chips")
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Link: https://lore.kernel.org/r/20220718082120.10957-391-nic_swsd@realtek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Paolo Abeni [Tue, 19 Jul 2022 10:37:04 +0000 (12:37 +0200)]
Merge branch 'amt-fix-validation-and-synchronization-bugs'
Taehee Yoo says:
====================
amt: fix validation and synchronization bugs
There are some synchronization issues in the amt module.
Especially, an amt gateway doesn't well synchronize its own variables
and status(amt->status).
It tries to use a workqueue for handles in a single thread.
A global lock is also good, but it would occur complex locking complex.
In this patchset, only the gateway uses workqueue.
The reason why only gateway interface uses workqueue is that gateway
should manage its own states and variables a little bit statefully.
But relay doesn't need to manage tunnels statefully, stateless is okay.
So, relay side message handlers are okay to be called concurrently.
But it doesn't mean that no lock is needed.
Only amt multicast data message type will not be processed by the work
queue because It contains actual multicast data.
So, it should be processed immediately.
When any amt gateway events are triggered(sending discovery message by
delayed_work, sending request message by delayed_work and receiving
messages), it stores event and skb into the event queue(amt->events[16]).
Then, workqueue processes these events one by one.
The first patch is to use the work queue.
The second patch is to remove unnecessary lock due to a previous patch.
The third patch is to use READ_ONCE() in the amt module.
Even if the amt module uses a single thread, some variables (ready4,
ready6, amt->status) can be accessed concurrently.
The fourth patch is to add missing nonce generation logic when it sends a
new request message.
The fifth patch is to drop unexpected advertisement messages.
advertisement message should be received only after the gateway sends
a discovery message first.
So, the gateway should drop advertisement messages if it has never
sent a discovery message and it also should drop duplicate advertisement
messages.
Using nonce is good to distinguish whether a received message is an
expected message or not.
The sixth patch is to drop unexpected query messages.
This is the same behavior as the fourth patch.
Query messages should be received only after the gateway sends a request
message first.
The nonce variable is used to distinguish whether it is a reply to a
previous request message or not.
amt->ready4 and amt->ready6 are used to distinguish duplicate messages.
The seventh patch is to drop unexpected multicast data.
AMT gateway should not receive multicast data message type before
establish between gateway and relay.
In order to drop unexpected multicast data messages, it checks amt->status.
The last patch is to fix a locking problem on the relay side.
amt->nr_tunnels variable is protected by amt->lock.
But amt_request_handler() doesn't protect this variable.
v2:
- Use local_bh_disable() instead of rcu_read_lock_bh() in
amt_membership_query_handler.
- Fix using uninitialized variables.
- Fix unexpectedly start the event_wq after stopping.
- Fix possible deadlock in amt_event_work().
- Add a limit variable in amt_event_work() to prevent infinite working.
- Rename amt_queue_events() to amt_queue_event().
====================
Link: https://lore.kernel.org/r/20220717160910.19156-1-ap420073@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Taehee Yoo [Sun, 17 Jul 2022 16:09:10 +0000 (16:09 +0000)]
amt: do not use amt->nr_tunnels outside of lock
amt->nr_tunnels is protected by amt->lock.
But, amt_request_handler() has been using this variable without the
amt->lock.
So, it expands context of amt->lock in the amt_request_handler() to
protect amt->nr_tunnels variable.
Fixes:
cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Taehee Yoo [Sun, 17 Jul 2022 16:09:09 +0000 (16:09 +0000)]
amt: drop unexpected multicast data
AMT gateway interface should not receive unexpected multicast data.
Multicast data message type should be received after sending an update
message, which means all establishment between gateway and relay is
finished.
So, amt_multicast_data_handler() checks amt->status.
Fixes:
cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Taehee Yoo [Sun, 17 Jul 2022 16:09:08 +0000 (16:09 +0000)]
amt: drop unexpected query message
AMT gateway interface should not receive unexpected query messages.
In order to drop unexpected query messages, it checks nonce.
And it also checks ready4 and ready6 variables to drop duplicated messages.
Fixes:
cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Taehee Yoo [Sun, 17 Jul 2022 16:09:07 +0000 (16:09 +0000)]
amt: drop unexpected advertisement message
AMT gateway interface should not receive unexpected advertisement messages.
In order to drop these packets, it should check nonce and amt->status.
Fixes:
cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Taehee Yoo [Sun, 17 Jul 2022 16:09:06 +0000 (16:09 +0000)]
amt: add missing regeneration nonce logic in request logic
When AMT gateway starts sending a new request message, it should
regenerate the nonce variable.
Fixes:
cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Taehee Yoo [Sun, 17 Jul 2022 16:09:05 +0000 (16:09 +0000)]
amt: use READ_ONCE() in amt module
There are some data races in the amt module.
amt->ready4, amt->ready6, and amt->status can be accessed concurrently
without locks.
So, it uses READ_ONCE() and WRITE_ONCE().
Fixes:
cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Taehee Yoo [Sun, 17 Jul 2022 16:09:04 +0000 (16:09 +0000)]
amt: remove unnecessary locks
By the previous patch, amt gateway handlers are changed to worked by
a single thread.
So, most locks for gateway are not needed.
So, it removes.
Fixes:
cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Taehee Yoo [Sun, 17 Jul 2022 16:09:03 +0000 (16:09 +0000)]
amt: use workqueue for gateway side message handling
There are some synchronization issues(amt->status, amt->req_cnt, etc)
if the interface is in gateway mode because gateway message handlers
are processed concurrently.
This applies a work queue for processing these messages instead of
expanding the locking context.
So, the purposes of this patch are to fix exist race conditions and to make
gateway to be able to validate a gateway status more correctly.
When the AMT gateway interface is created, it tries to establish to relay.
The establishment step looks stateless, but it should be managed well.
In order to handle messages in the gateway, it saves the current
status(i.e. AMT_STATUS_XXX).
This patch makes gateway code to be worked with a single thread.
Now, all messages except the multicast are triggered(received or
delay expired), and these messages will be stored in the event
queue(amt->events).
Then, the single worker processes stored messages asynchronously one
by one.
The multicast data message type will be still processed immediately.
Now, amt->lock is only needed to access the event queue(amt->events)
if an interface is the gateway mode.
Fixes:
cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Oleksij Rempel [Sun, 17 Jul 2022 13:58:31 +0000 (15:58 +0200)]
net: dsa: vitesse-vsc73xx: silent spi_device_id warnings
Add spi_device_id entries to silent SPI warnings.
Fixes:
5fa6863ba692 ("spi: Check we have a spi_device_id for each DT compatible")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20220717135831.2492844-2-o.rempel@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Oleksij Rempel [Sun, 17 Jul 2022 13:58:30 +0000 (15:58 +0200)]
net: dsa: sja1105: silent spi_device_id warnings
Add spi_device_id entries to silent following warnings:
SPI driver sja1105 has no spi_device_id for nxp,sja1105e
SPI driver sja1105 has no spi_device_id for nxp,sja1105t
SPI driver sja1105 has no spi_device_id for nxp,sja1105p
SPI driver sja1105 has no spi_device_id for nxp,sja1105q
SPI driver sja1105 has no spi_device_id for nxp,sja1105r
SPI driver sja1105 has no spi_device_id for nxp,sja1105s
SPI driver sja1105 has no spi_device_id for nxp,sja1110a
SPI driver sja1105 has no spi_device_id for nxp,sja1110b
SPI driver sja1105 has no spi_device_id for nxp,sja1110c
SPI driver sja1105 has no spi_device_id for nxp,sja1110d
Fixes:
5fa6863ba692 ("spi: Check we have a spi_device_id for each DT compatible")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220717135831.2492844-1-o.rempel@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Hristo Venev [Sat, 16 Jul 2022 08:51:34 +0000 (11:51 +0300)]
be2net: Fix buffer overflow in be_get_module_eeprom
be_cmd_read_port_transceiver_data assumes that it is given a buffer that
is at least PAGE_DATA_LEN long, or twice that if the module supports SFF
8472. However, this is not always the case.
Fix this by passing the desired offset and length to
be_cmd_read_port_transceiver_data so that we only copy the bytes once.
Fixes:
e36edd9d26cf ("be2net: add ethtool "-m" option support")
Signed-off-by: Hristo Venev <hristo@venev.name>
Link: https://lore.kernel.org/r/20220716085134.6095-1-hristo@venev.name
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Wong Vee Khee [Fri, 15 Jul 2022 12:24:02 +0000 (20:24 +0800)]
net: stmmac: remove redunctant disable xPCS EEE call
Disable is done in stmmac_init_eee() on the event of MAC link down.
Since setting enable/disable EEE via ethtool will eventually trigger
a MAC down, removing this redunctant call in stmmac_ethtool.c to avoid
calling xpcs_config_eee() twice.
Fixes:
d4aeaed80b0e ("net: stmmac: trigger PCS EEE to turn off on link down")
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Link: https://lore.kernel.org/r/20220715122402.1017470-1-vee.khee.wong@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Tue, 19 Jul 2022 03:14:27 +0000 (20:14 -0700)]
Merge branch 'fix-2-dsa-issues-with-vlan_filtering_is_global'
Vladimir Oltean says:
====================
Fix 2 DSA issues with vlan_filtering_is_global
This patch set fixes 2 issues with vlan_filtering_is_global switches.
Both are regressions introduced by refactoring commit
d0004a020bb5
("net: dsa: remove the "dsa_to_port in a loop" antipattern from the
core"), which wasn't tested on a wide enough variety of switches.
Tested on the sja1105 driver.
====================
Link: https://lore.kernel.org/r/20220715151659.780544-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Fri, 15 Jul 2022 15:16:59 +0000 (18:16 +0300)]
net: dsa: fix NULL pointer dereference in dsa_port_reset_vlan_filtering
The "ds" iterator variable used in dsa_port_reset_vlan_filtering() ->
dsa_switch_for_each_port() overwrites the "dp" received as argument,
which is later used to call dsa_port_vlan_filtering() proper.
As a result, switches which do enter that code path (the ones with
vlan_filtering_is_global=true) will dereference an invalid dp in
dsa_port_reset_vlan_filtering() after leaving a VLAN-aware bridge.
Use a dedicated "other_dp" iterator variable to avoid this from
happening.
Fixes:
d0004a020bb5 ("net: dsa: remove the "dsa_to_port in a loop" antipattern from the core")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Fri, 15 Jul 2022 15:16:58 +0000 (18:16 +0300)]
net: dsa: fix dsa_port_vlan_filtering when global
The blamed refactoring commit changed a "port" iterator with "other_dp",
but still looked at the slave_dev of the dp outside the loop, instead of
other_dp->slave from the loop.
As a result, dsa_port_vlan_filtering() would not call
dsa_slave_manage_vlan_filtering() except for the port in cause, and not
for all switch ports as expected.
Fixes:
d0004a020bb5 ("net: dsa: remove the "dsa_to_port in a loop" antipattern from the core")
Reported-by: Lucian Banu <Lucian.Banu@westermo.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Piotr Skajewski [Fri, 15 Jul 2022 21:44:56 +0000 (14:44 -0700)]
ixgbe: Add locking to prevent panic when setting sriov_numvfs to zero
It is possible to disable VFs while the PF driver is processing requests
from the VF driver. This can result in a panic.
BUG: unable to handle kernel paging request at
000000000000106c
PGD 0 P4D 0
Oops: 0000 [#1] SMP NOPTI
CPU: 8 PID: 0 Comm: swapper/8 Kdump: loaded Tainted: G I --------- -
Hardware name: Dell Inc. PowerEdge R740/06WXJT, BIOS 2.8.2 08/27/2020
RIP: 0010:ixgbe_msg_task+0x4c8/0x1690 [ixgbe]
Code: 00 00 48 8d 04 40 48 c1 e0 05 89 7c 24 24 89 fd 48 89 44 24 10 83 ff
01 0f 84 b8 04 00 00 4c 8b 64 24 10 4d 03 a5 48 22 00 00 <41> 80 7c 24 4c
00 0f 84 8a 03 00 00 0f b7 c7 83 f8 08 0f 84 8f 0a
RSP: 0018:
ffffb337869f8df8 EFLAGS:
00010002
RAX:
0000000000001020 RBX:
0000000000000000 RCX:
000000000000002b
RDX:
0000000000000002 RSI:
0000000000000008 RDI:
0000000000000006
RBP:
0000000000000006 R08:
0000000000000002 R09:
0000000000029780
R10:
00006957d8f42832 R11:
0000000000000000 R12:
0000000000001020
R13:
ffff8a00e8978ac0 R14:
000000000000002b R15:
ffff8a00e8979c80
FS:
0000000000000000(0000) GS:
ffff8a07dfd00000(0000) knlGS:
00000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
000000000000106c CR3:
0000000063e10004 CR4:
00000000007726e0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
PKRU:
55555554
Call Trace:
<IRQ>
? ttwu_do_wakeup+0x19/0x140
? try_to_wake_up+0x1cd/0x550
? ixgbevf_update_xcast_mode+0x71/0xc0 [ixgbevf]
ixgbe_msix_other+0x17e/0x310 [ixgbe]
__handle_irq_event_percpu+0x40/0x180
handle_irq_event_percpu+0x30/0x80
handle_irq_event+0x36/0x53
handle_edge_irq+0x82/0x190
handle_irq+0x1c/0x30
do_IRQ+0x49/0xd0
common_interrupt+0xf/0xf
This can be eventually be reproduced with the following script:
while :
do
echo 63 > /sys/class/net/<devname>/device/sriov_numvfs
sleep 1
echo 0 > /sys/class/net/<devname>/device/sriov_numvfs
sleep 1
done
Add lock when disabling SR-IOV to prevent process VF mailbox communication.
Fixes:
d773d1310625 ("ixgbe: Fix memory leak when SR-IOV VFs are direct assigned")
Signed-off-by: Piotr Skajewski <piotrx.skajewski@intel.com>
Tested-by: Marek Szlosek <marek.szlosek@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20220715214456.2968711-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Dawid Lukwinski [Fri, 15 Jul 2022 21:45:41 +0000 (14:45 -0700)]
i40e: Fix erroneous adapter reinitialization during recovery process
Fix an issue when driver incorrectly detects state
of recovery process and erroneously reinitializes interrupts,
which results in a kernel error and call trace message.
The issue was caused by a combination of two factors:
1. Assuming the EMP reset issued after completing
firmware recovery means the whole recovery process is complete.
2. Erroneous reinitialization of interrupt vector after detecting
the above mentioned EMP reset.
Fixes (1) by changing how recovery state change is detected
and (2) by adjusting the conditional expression to ensure using proper
interrupt reinitialization method, depending on the situation.
Fixes:
4ff0ee1af016 ("i40e: Introduce recovery mode support")
Signed-off-by: Dawid Lukwinski <dawid.lukwinski@intel.com>
Signed-off-by: Jan Sokolowski <jan.sokolowski@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20220715214542.2968762-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tom Rix [Sat, 16 Jul 2022 21:46:54 +0000 (17:46 -0400)]
net: ethernet: mtk_eth_soc: fix off by one check of ARRAY_SIZE
In mtk_wed_tx_ring_setup(.., int idx, ..), idx is used as an index here
struct mtk_wed_ring *ring = &dev->tx_ring[idx];
The bounds of idx are checked here
BUG_ON(idx > ARRAY_SIZE(dev->tx_ring));
If idx is the size of the array, it will pass this check and overflow.
So change the check to >= .
Fixes:
804775dfc288 ("net: ethernet: mtk_eth_soc: add support for Wireless Ethernet Dispatch (WED)")
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20220716214654.1540240-1-trix@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Tue, 19 Jul 2022 03:00:05 +0000 (20:00 -0700)]
Merge branch 'net-lan966x-fix-issues-with-mac-table'
Horatiu Vultur says:
====================
net: lan966x: Fix issues with MAC table
The patch series fixes 2 issues:
- when an entry was forgotten the irq thread was holding a spin lock and then
was talking also rtnl_lock.
- the access to the HW MAC table is indirect, so the access to the HW MAC
table was not synchronized, which means that there could be race conditions.
====================
Link: https://lore.kernel.org/r/20220714194040.231651-1-horatiu.vultur@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Horatiu Vultur [Thu, 14 Jul 2022 19:40:40 +0000 (21:40 +0200)]
net: lan966x: Fix usage of lan966x->mac_lock when used by FDB
When the SW bridge was trying to add/remove entries to/from HW, the
access to HW was not protected by any lock. In this way, it was
possible to have race conditions.
Fix this by using the lan966x->mac_lock to protect parallel access to HW
for this cases.
Fixes:
25ee9561ec622 ("net: lan966x: More MAC table functionality")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Horatiu Vultur [Thu, 14 Jul 2022 19:40:39 +0000 (21:40 +0200)]
net: lan966x: Fix usage of lan966x->mac_lock inside lan966x_mac_irq_handler
The problem with this spin lock is that it was just protecting the list
of the MAC entries in SW and not also the access to the MAC entries in HW.
Because the access to HW is indirect, then it could happen to have race
conditions.
For example when SW introduced an entry in MAC table and the irq mac is
trying to read something from the MAC.
Update such that also the access to MAC entries in HW is protected by
this lock.
Fixes:
5ccd66e01cbef ("net: lan966x: add support for interrupts from analyzer")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Horatiu Vultur [Thu, 14 Jul 2022 19:40:38 +0000 (21:40 +0200)]
net: lan966x: Fix usage of lan966x->mac_lock when entry is removed
To remove an entry to the MAC table, it is required first to setup the
entry and then issue a command for the MAC to forget the entry.
So if it happens for two threads to remove simultaneously an entry
in MAC table then it would be a race condition.
Fix this by using lan966x->mac_lock to protect the HW access.
Fixes:
e18aba8941b40 ("net: lan966x: add mactable support")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Horatiu Vultur [Thu, 14 Jul 2022 19:40:37 +0000 (21:40 +0200)]
net: lan966x: Fix usage of lan966x->mac_lock when entry is added
To add an entry to the MAC table, it is required first to setup the
entry and then issue a command for the MAC to learn the entry.
So if it happens for two threads to add simultaneously an entry in MAC
table then it would be a race condition.
Fix this by using lan966x->mac_lock to protect the HW access.
Fixes:
fc0c3fe7486f2 ("net: lan966x: Add function lan966x_mac_ip_learn()")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>