linux-2.6-microblaze.git
2 years agonet: asix: fix uninit value bugs
Pavel Skripkin [Tue, 17 Aug 2021 16:37:23 +0000 (19:37 +0300)]
net: asix: fix uninit value bugs

Syzbot reported uninit-value in asix_mdio_read(). The problem was in
missing error handling. asix_read_cmd() should initialize passed stack
variable smsr, but it can fail in some cases. Then while condidition
checks possibly uninit smsr variable.

Since smsr is uninitialized stack variable, driver can misbehave,
because smsr will be random in case of asix_read_cmd() failure.
Fix it by adding error handling and just continue the loop instead of
checking uninit value.

Added helper function for checking Host_En bit, since wrong loop was used
in 4 functions and there is no need in copy-pasting code parts.

Cc: Robert Foss <robert.foss@collabora.com>
Fixes: d9fe64e51114 ("net: asix: Add in_pm parameter")
Reported-by: syzbot+a631ec9e717fb0423053@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoovs: clear skb->tstamp in forwarding path
kaixi.fan [Wed, 18 Aug 2021 02:22:15 +0000 (10:22 +0800)]
ovs: clear skb->tstamp in forwarding path

fq qdisc requires tstamp to be cleared in the forwarding path. Now ovs
doesn't clear skb->tstamp. We encountered a problem with linux
version 5.4.56 and ovs version 2.14.1, and packets failed to
dequeue from qdisc when fq qdisc was attached to ovs port.

Fixes: fb420d5d91c1 ("tcp/fq: move back to CLOCK_MONOTONIC")
Signed-off-by: kaixi.fan <fankaixi.li@bytedance.com>
Signed-off-by: xiexiaohui <xiexiaohui.xxh@bytedance.com>
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'mdio-fixes'
David S. Miller [Wed, 18 Aug 2021 09:48:52 +0000 (10:48 +0100)]
Merge branch 'mdio-fixes'

Saravana Kannan says:

====================
Clean up and fix error handling in mdio_mux_init()

This patch series was started due to -EPROBE_DEFER not being handled
correctly in mdio_mux_init() and causing issues [1]. While at it, I also
did some more error handling fixes and clean ups. The -EPROBE_DEFER fix is
the last patch.

Ideally, in the last patch we'd treat any error similar to -EPROBE_DEFER
but I'm not sure if it'll break any board/platforms where some child
mdiobus never successfully registers. If we treated all errors similar to
-EPROBE_DEFER, then none of the child mdiobus will work and that might be a
regression. If people are sure this is not a real case, then I can fix up
the last patch to always fail the entire mdio-mux init if any of the child
mdiobus registration fails.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: mdio-mux: Handle -EPROBE_DEFER correctly
Saravana Kannan [Wed, 18 Aug 2021 03:38:03 +0000 (20:38 -0700)]
net: mdio-mux: Handle -EPROBE_DEFER correctly

When registering mdiobus children, if we get an -EPROBE_DEFER, we shouldn't
ignore it and continue registering the rest of the mdiobus children. This
would permanently prevent the deferring child mdiobus from working instead
of reattempting it in the future. So, if a child mdiobus needs to be
reattempted in the future, defer the entire mdio-mux initialization.

This fixes the issue where PHYs sitting under the mdio-mux aren't
initialized correctly if the PHY's interrupt controller is not yet ready
when the mdio-mux is being probed. Additional context in the link below.

Fixes: 0ca2997d1452 ("netdev/of/phy: Add MDIO bus multiplexer support.")
Link: https://lore.kernel.org/lkml/CAGETcx95kHrv8wA-O+-JtfH7H9biJEGJtijuPVN0V5dUKUAB3A@mail.gmail.com/#t
Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: mdio-mux: Don't ignore memory allocation errors
Saravana Kannan [Wed, 18 Aug 2021 03:38:02 +0000 (20:38 -0700)]
net: mdio-mux: Don't ignore memory allocation errors

If we are seeing memory allocation errors, don't try to continue
registering child mdiobus devices. It's unlikely they'll succeed.

Fixes: 342fa1964439 ("mdio: mux: make child bus walking more permissive and errors more verbose")
Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: mdio-mux: Delete unnecessary devm_kfree
Saravana Kannan [Wed, 18 Aug 2021 03:38:01 +0000 (20:38 -0700)]
net: mdio-mux: Delete unnecessary devm_kfree

The whole point of devm_* APIs is that you don't have to undo them if you
are returning an error that's going to get propagated out of a probe()
function. So delete unnecessary devm_kfree() call in the error return path.

Fixes: b60161668199 ("mdio: mux: Correct mdio_mux_init error path issues")
Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: sja1105: fix use-after-free after calling of_find_compatible_node, or worse
Vladimir Oltean [Tue, 17 Aug 2021 14:52:45 +0000 (17:52 +0300)]
net: dsa: sja1105: fix use-after-free after calling of_find_compatible_node, or worse

It seems that of_find_compatible_node has a weird calling convention in
which it calls of_node_put() on the "from" node argument, instead of
leaving that up to the caller. This comes from the fact that
of_find_compatible_node with a non-NULL "from" argument it only supposed
to be used as the iterator function of for_each_compatible_node(). OF
iterator functions call of_node_get on the next OF node and of_node_put()
on the previous one.

When of_find_compatible_node calls of_node_put, it actually never
expects the refcount to drop to zero, because the call is done under the
atomic devtree_lock context, and when the refcount drops to zero it
triggers a kobject and a sysfs file deletion, which assume blocking
context.

So any driver call to of_find_compatible_node is probably buggy because
an unexpected of_node_put() takes place.

What should be done is to use the of_get_compatible_child() function.

Fixes: 5a8f09748ee7 ("net: dsa: sja1105: register the MDIO buses for 100base-T1 and 100base-TX")
Link: https://lore.kernel.org/netdev/20210814010139.kzryimmp4rizlznt@skbuf/
Suggested-by: Frank Rowand <frowand.list@gmail.com>
Suggested-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agosch_cake: fix srchost/dsthost hashing mode
Toke Høiland-Jørgensen [Mon, 16 Aug 2021 11:59:17 +0000 (13:59 +0200)]
sch_cake: fix srchost/dsthost hashing mode

When adding support for using the skb->hash value as the flow hash in CAKE,
I accidentally introduced a logic error that broke the host-only isolation
modes of CAKE (srchost and dsthost keywords). Specifically, the flow_hash
variable should stay initialised to 0 in cake_hash() in pure host-based
hashing mode. Add a check for this before using the skb->hash value as
flow_hash.

Fixes: b0c19ed6088a ("sch_cake: Take advantage of skb->hash where appropriate")
Reported-by: Pete Heist <pete@heistp.net>
Tested-by: Pete Heist <pete@heistp.net>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodrm/nouveau: rip out nvkm_client.super
Ben Skeggs [Thu, 4 Mar 2021 09:53:01 +0000 (19:53 +1000)]
drm/nouveau: rip out nvkm_client.super

No longer required now that userspace can't touch anything that might
need it, and should fix DRM MM operations racing with each other, and
the random hangs/crashes that come with that.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
2 years agodrm/nouveau: block a bunch of classes from userspace
Ben Skeggs [Thu, 4 Mar 2021 09:16:18 +0000 (19:16 +1000)]
drm/nouveau: block a bunch of classes from userspace

Long ago, there had been plans for making use of a bunch of these APIs
from userspace and there's various checks in place to stop misbehaving.

Countless other projects have occurred in the meantime, and the pieces
didn't finish falling into place for that to happen.

They will (hopefully) in the not-too-distant future, but it won't look
quite as insane.  The super checks are causing problems right now, and
are going to be removed.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
2 years agodrm/nouveau/fifo/nv50-: rip out dma channels
Ben Skeggs [Thu, 4 Mar 2021 08:52:52 +0000 (18:52 +1000)]
drm/nouveau/fifo/nv50-: rip out dma channels

I honestly don't even know why...  These have never been used.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
2 years agodrm/nouveau/kms/nv50: workaround EFI GOP window channel format differences
Ben Skeggs [Tue, 10 Aug 2021 09:29:57 +0000 (19:29 +1000)]
drm/nouveau/kms/nv50: workaround EFI GOP window channel format differences

Should fix some initial modeset failures on (at least) Ampere boards.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
2 years agodrm/nouveau/disp: power down unused DP links during init
Ben Skeggs [Mon, 9 Aug 2021 06:40:48 +0000 (16:40 +1000)]
drm/nouveau/disp: power down unused DP links during init

When booted with multiple displays attached, the EFI GOP driver on (at
least) Ampere, can leave DP links powered up that aren't being used to
display anything.  This confuses our tracking of SOR routing, with the
likely result being a failed modeset and display engine hang.

Fix this by (ab?)using the DisableLT IED script to power-down the link,
restoring HW to a state the driver expects.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
2 years agodrm/nouveau: recognise GA107
Ben Skeggs [Tue, 10 Aug 2021 10:29:24 +0000 (20:29 +1000)]
drm/nouveau: recognise GA107

Still no GA106 as I don't have HW to verif.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
2 years agos390/pci: fix use after free of zpci_dev
Niklas Schnelle [Fri, 6 Aug 2021 10:11:16 +0000 (12:11 +0200)]
s390/pci: fix use after free of zpci_dev

The struct pci_dev uses reference counting but zPCI assumed erroneously
that the last reference would always be the local reference after
calling pci_stop_and_remove_bus_device(). This is usually the case but
not how reference counting works and thus inherently fragile.

In fact one case where this causes a NULL pointer dereference when on an
SRIOV device the function 0 was hot unplugged before another function of
the same multi-function device. In this case the second function's
pdev->sriov->dev reference keeps the struct pci_dev of function 0 alive
even after the unplug. This bug was previously hidden by the fact that
we were leaking the struct pci_dev which in turn means that it always
outlived the struct zpci_dev. This was fixed in commit 0b13525c20fe
("s390/pci: fix leak of PCI device structure") exposing the broken
behavior.

Fix this by accounting for the long living reference a struct pci_dev
has to its underlying struct zpci_dev via the zbus->function[] array and
only release that in pcibios_release_device() ensuring that the struct
pci_dev is not left with a dangling reference. This is a minimal fix in
the future it would probably better to use fine grained reference
counting for struct zpci_dev.

Fixes: 05bc1be6db4b2 ("s390/pci: create zPCI bus")
Cc: stable@vger.kernel.org
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2 years agoplatform/x86: gigabyte-wmi: add support for X570 GAMING X
Thomas Weißschuh [Tue, 17 Aug 2021 15:46:28 +0000 (17:46 +0200)]
platform/x86: gigabyte-wmi: add support for X570 GAMING X

Reported as working here:
https://github.com/t-8ch/linux-gigabyte-wmi-driver/issues/1#issuecomment-900263115

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20210817154628.84992-1-linux@weissschuh.net
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2 years agoblk-mq: fix is_flush_rq
Ming Lei [Wed, 18 Aug 2021 01:09:25 +0000 (09:09 +0800)]
blk-mq: fix is_flush_rq

is_flush_rq() is called from bt_iter()/bt_tags_iter(), and runs the
following check:

hctx->fq->flush_rq == req

but the passed hctx from bt_iter()/bt_tags_iter() may be NULL because:

1) memory re-order in blk_mq_rq_ctx_init():

rq->mq_hctx = data->hctx;
...
refcount_set(&rq->ref, 1);

OR

2) tag re-use and ->rqs[] isn't updated with new request.

Fix the issue by re-writing is_flush_rq() as:

return rq->end_io == flush_end_io;

which turns out simpler to follow and immune to data race since we have
ordered WRITE rq->end_io and refcount_set(&rq->ref, 1).

Fixes: 2e315dc07df0 ("blk-mq: grab rq->refcount before calling ->fn in blk_mq_tagset_busy_iter")
Cc: "Blank-Burian, Markus, Dr." <blankburian@uni-muenster.de>
Cc: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20210818010925.607383-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoixgbe, xsk: clean up the resources in ixgbe_xsk_pool_enable error path
Wang Hai [Tue, 17 Aug 2021 20:37:36 +0000 (13:37 -0700)]
ixgbe, xsk: clean up the resources in ixgbe_xsk_pool_enable error path

In ixgbe_xsk_pool_enable(), if ixgbe_xsk_wakeup() fails,
We should restore the previous state and clean up the
resources. Add the missing clear af_xdp_zc_qps and unmap dma
to fix this bug.

Fixes: d49e286d354e ("ixgbe: add tracking of AF_XDP zero-copy state for each queue pair")
Fixes: 4a9b32f30f80 ("ixgbe: fix potential RX buffer starvation for AF_XDP")
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20210817203736.3529939-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge tag 'wireless-drivers-2021-08-17' of git://git.kernel.org/pub/scm/linux/kernel...
Jakub Kicinski [Tue, 17 Aug 2021 22:08:13 +0000 (15:08 -0700)]
Merge tag 'wireless-drivers-2021-08-17' of git://git./linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for v5.14

First set of fixes for v5.14 and nothing major this time. New devices
for iwlwifi and one fix for a compiler warning.

iwlwifi
 * support for new devices

mt76
 * fix compiler warning about MT_CIPHER_NONE

* tag 'wireless-drivers-2021-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers:
  mt76: fix enum type mismatch
  iwlwifi: add new so-jf devices
  iwlwifi: add new SoF with JF devices
  iwlwifi: pnvm: accept multiple HW-type TLVs
====================

Link: https://lore.kernel.org/r/20210817171027.EC1E6C43460@smtp.codeaurora.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoio_uring: pin ctx on fallback execution
Pavel Begunkov [Tue, 17 Aug 2021 21:36:44 +0000 (22:36 +0100)]
io_uring: pin ctx on fallback execution

Pin ring in io_fallback_req_func() by briefly elevating ctx->refs in
case any task_work handler touches ctx after releasing a request.

Fixes: 9011bf9a13e3b ("io_uring: fix stuck fallback reqs")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/833a494713d235ec144284a9bbfe418df4f6b61c.1629235576.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoMerge tag 'trace-v5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Tue, 17 Aug 2021 19:47:18 +0000 (09:47 -1000)]
Merge tag 'trace-v5.14-rc6' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Limit the shooting in the foot of tp_printk

  The "tp_printk" option redirects the trace event output to printk at
  boot up. This is useful when a machine crashes before boot where the
  trace events can not be retrieved by the in kernel ring buffer. But it
  can be "dangerous" because trace events can be located in high
  frequency locations such as interrupts and the scheduler, where a
  printk can slow it down that it live locks the machine (because by the
  time the printk finishes, the next event is triggered). Thus tp_printk
  must be used with care.

  It was discovered that the filter logic to trace events does not apply
  to the tp_printk events. This can cause a surprise and live lock when
  the user expects it to be filtered to limit the amount of events
  printed to the console when in fact it still prints everything"

* tag 'trace-v5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Apply trace filters on all output channels

2 years agoMerge branch 'cpufreq/arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Rafael J. Wysocki [Tue, 17 Aug 2021 18:52:07 +0000 (20:52 +0200)]
Merge branch 'cpufreq/arm/fixes' of git://git./linux/kernel/git/vireshk/pm

Pull ARM cpufreq fixes for v5.14 from Viresh Kumar:

"This contains:

 - Addition of SoCs to blocklist for cpufreq-dt driver (Bjorn Andersson
   and Thara Gopinath).

 - Fix error path for scmi driver (Lukasz Luba).

 - Temporarily disable highest frequency for armada, its unsafe and
   breaks stuff."

* 'cpufreq/arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  cpufreq: armada-37xx: forbid cpufreq for 1.2 GHz variant
  cpufreq: blocklist Qualcomm sm8150 in cpufreq-dt-platdev
  cpufreq: arm_scmi: Fix error path when allocation failed
  cpufreq: blacklist Qualcomm sc8180x in cpufreq-dt-platdev

2 years agodrm: Copy drm_wait_vblank to user before returning
Mark Yacoub [Thu, 12 Aug 2021 19:49:17 +0000 (15:49 -0400)]
drm: Copy drm_wait_vblank to user before returning

[Why]
Userspace should get back a copy of drm_wait_vblank that's been modified
even when drm_wait_vblank_ioctl returns a failure.

Rationale:
drm_wait_vblank_ioctl modifies the request and expects the user to read
it back. When the type is RELATIVE, it modifies it to ABSOLUTE and updates
the sequence to become current_vblank_count + sequence (which was
RELATIVE), but now it became ABSOLUTE.
drmWaitVBlank (in libdrm) expects this to be the case as it modifies
the request to be Absolute so it expects the sequence to would have been
updated.

The change is in compat_drm_wait_vblank, which is called by
drm_compat_ioctl. This change of copying the data back regardless of the
return number makes it en par with drm_ioctl, which always copies the
data before returning.

[How]
Return from the function after everything has been copied to user.

Fixes IGT:kms_flip::modeset-vs-vblank-race-interruptible
Tested on ChromeOS Trogdor(msm)

Reviewed-by: Michel Dänzer <mdaenzer@redhat.com>
Signed-off-by: Mark Yacoub <markyacoub@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210812194917.1703356-1-markyacoub@chromium.org
2 years agonet: qlcnic: add missed unlock in qlcnic_83xx_flash_read32
Dinghao Liu [Mon, 16 Aug 2021 13:14:04 +0000 (21:14 +0800)]
net: qlcnic: add missed unlock in qlcnic_83xx_flash_read32

qlcnic_83xx_unlock_flash() is called on all paths after we call
qlcnic_83xx_lock_flash(), except for one error path on failure
of QLCRD32(), which may cause a deadlock. This bug is suggested
by a static analysis tool, please advise.

Fixes: 81d0aeb0a4fff ("qlcnic: flash template based firmware reset recovery")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Link: https://lore.kernel.org/r/20210816131405.24024-1-dinghao.liu@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoblk-mq: fix kernel panic during iterating over flush request
Ming Lei [Wed, 11 Aug 2021 14:26:24 +0000 (22:26 +0800)]
blk-mq: fix kernel panic during iterating over flush request

For fixing use-after-free during iterating over requests, we grabbed
request's refcount before calling ->fn in commit 2e315dc07df0 ("blk-mq:
grab rq->refcount before calling ->fn in blk_mq_tagset_busy_iter").
Turns out this way may cause kernel panic when iterating over one flush
request:

1) old flush request's tag is just released, and this tag is reused by
one new request, but ->rqs[] isn't updated yet

2) the flush request can be re-used for submitting one new flush command,
so blk_rq_init() is called at the same time

3) meantime blk_mq_queue_tag_busy_iter() is called, and old flush request
is retrieved from ->rqs[tag]; when blk_mq_put_rq_ref() is called,
flush_rq->end_io may not be updated yet, so NULL pointer dereference
is triggered in blk_mq_put_rq_ref().

Fix the issue by calling refcount_set(&flush_rq->ref, 1) after
flush_rq->end_io is set. So far the only other caller of blk_rq_init() is
scsi_ioctl_reset() in which the request doesn't enter block IO stack and
the request reference count isn't used, so the change is safe.

Fixes: 2e315dc07df0 ("blk-mq: grab rq->refcount before calling ->fn in blk_mq_tagset_busy_iter")
Reported-by: "Blank-Burian, Markus, Dr." <blankburian@uni-muenster.de>
Tested-by: "Blank-Burian, Markus, Dr." <blankburian@uni-muenster.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/20210811142624.618598-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoblk-mq: don't grab rq's refcount in blk_mq_check_expired()
Ming Lei [Wed, 11 Aug 2021 15:52:02 +0000 (23:52 +0800)]
blk-mq: don't grab rq's refcount in blk_mq_check_expired()

Inside blk_mq_queue_tag_busy_iter() we already grabbed request's
refcount before calling ->fn(), so needn't to grab it one more time
in blk_mq_check_expired().

Meantime remove extra request expire check in blk_mq_check_expired().

Cc: Keith Busch <kbusch@kernel.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/20210811155202.629575-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agomac80211: fix locking in ieee80211_restart_work()
Johannes Berg [Tue, 17 Aug 2021 10:12:22 +0000 (12:12 +0200)]
mac80211: fix locking in ieee80211_restart_work()

Ilan's change to move locking around accidentally lost the
wiphy_lock() during some porting, add it back.

Fixes: 45daaa131841 ("mac80211: Properly WARN on HW scan before restart")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20210817121210.47bdb177064f.Ib1ef79440cd27f318c028ddfc0c642406917f512@changeid
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agovirtio-net: use NETIF_F_GRO_HW instead of NETIF_F_LRO
Jason Wang [Tue, 17 Aug 2021 08:06:59 +0000 (16:06 +0800)]
virtio-net: use NETIF_F_GRO_HW instead of NETIF_F_LRO

Commit a02e8964eaf92 ("virtio-net: ethtool configurable LRO")
maps LRO to virtio guest offloading features and allows the
administrator to enable and disable those features via ethtool.

This leads to several issues:

- For a device that doesn't support control guest offloads, the "LRO"
  can't be disabled triggering WARN in dev_disable_lro() when turning
  off LRO or when enabling forwarding bridging etc.

- For a device that supports control guest offloads, the guest
  offloads are disabled in cases of bridging, forwarding etc slowing
  down the traffic.

Fix this by using NETIF_F_GRO_HW instead. Though the spec does not
guarantee packets to be re-segmented as the original ones,
we can add that to the spec, possibly with a flag for devices to
differentiate between GRO and LRO.

Further, we never advertised LRO historically before a02e8964eaf92
("virtio-net: ethtool configurable LRO") and so bridged/forwarded
configs effectively always relied on virtio receive offloads behaving
like GRO - thus even if this breaks any configs it is at least not
a regression.

Fixes: a02e8964eaf92 ("virtio-net: ethtool configurable LRO")
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reported-by: Ivan <ivan@prestigetransportation.com>
Tested-by: Ivan <ivan@prestigetransportation.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoALSA: hda/via: Apply runtime PM workaround for ASUS B23E
Takashi Iwai [Tue, 17 Aug 2021 05:24:32 +0000 (07:24 +0200)]
ALSA: hda/via: Apply runtime PM workaround for ASUS B23E

ASUS B23E requires the same workaround like other machines with
VT1802, otherwise it looses the codec power on a few nodes and the
sound kept silence.

Fixes: a0645daf1610 ("ALSA: HDA: Early Forbid of runtime PM")
Link: https://lore.kernel.org/r/ac2232f142efcd67fe6ac38897f704f7176bd200.camel@gmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210817052432.14751-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2 years agoALSA: hda: Fix hang during shutdown due to link reset
Imre Deak [Mon, 16 Aug 2021 17:42:59 +0000 (20:42 +0300)]
ALSA: hda: Fix hang during shutdown due to link reset

During system shutdown codecs may be still active, and resetting the
controller->codec HW link in this state - based on the bug reporter's
tests - leads to the shutdown sequence to get stuck. This happens at
least on the reporter's KBL system with an ALC662 codec.

For now fix the issue by skipping the link reset step.

Fixes: 472e18f63c42 ("ALSA: hda: Release controller display power during shutdown/reboot")
References: https://bugzilla.kernel.org/show_bug.cgi?id=214045
References: https://gitlab.freedesktop.org/drm/intel/-/issues/3618#note_1024665
Reported-and-tested-by: youling257@gmail.com
Cc: youling257@gmail.com
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://lore.kernel.org/r/20210816174259.2759103-1-imre.deak@intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Tue, 17 Aug 2021 01:42:09 +0000 (15:42 -1000)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fix from Herbert Xu:
 "This contains a fix for a potential boot failure due to a missing
  Kconfig dependency for people upgrading with the DRBG enabled"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: drbg - select SHA512

2 years agovrf: Reset skb conntrack connection on VRF rcv
Lahav Schlesinger [Sun, 15 Aug 2021 12:00:02 +0000 (12:00 +0000)]
vrf: Reset skb conntrack connection on VRF rcv

To fix the "reverse-NAT" for replies.

When a packet is sent over a VRF, the POST_ROUTING hooks are called
twice: Once from the VRF interface, and once from the "actual"
interface the packet will be sent from:
1) First SNAT: l3mdev_l3_out() -> vrf_l3_out() -> .. -> vrf_output_direct()
     This causes the POST_ROUTING hooks to run.
2) Second SNAT: 'ip_output()' calls POST_ROUTING hooks again.

Similarly for replies, first ip_rcv() calls PRE_ROUTING hooks, and
second vrf_l3_rcv() calls them again.

As an example, consider the following SNAT rule:
> iptables -t nat -A POSTROUTING -p udp -m udp --dport 53 -j SNAT --to-source 2.2.2.2 -o vrf_1

In this case sending over a VRF will create 2 conntrack entries.
The first is from the VRF interface, which performs the IP SNAT.
The second will run the SNAT, but since the "expected reply" will remain
the same, conntrack randomizes the source port of the packet:
e..g With a socket bound to 1.1.1.1:10000, sending to 3.3.3.3:53, the conntrack
rules are:
udp      17 29 src=2.2.2.2 dst=3.3.3.3 sport=10000 dport=53 packets=1 bytes=68 [UNREPLIED] src=3.3.3.3 dst=2.2.2.2 sport=53 dport=61033 packets=0 bytes=0 mark=0 use=1
udp      17 29 src=1.1.1.1 dst=3.3.3.3 sport=10000 dport=53 packets=1 bytes=68 [UNREPLIED] src=3.3.3.3 dst=2.2.2.2 sport=53 dport=10000 packets=0 bytes=0 mark=0 use=1

i.e. First SNAT IP from 1.1.1.1 --> 2.2.2.2, and second the src port is
SNAT-ed from 10000 --> 61033.

But when a reply is sent (3.3.3.3:53 -> 2.2.2.2:61033) only the later
conntrack entry is matched:
udp      17 29 src=2.2.2.2 dst=3.3.3.3 sport=10000 dport=53 packets=1 bytes=68 src=3.3.3.3 dst=2.2.2.2 sport=53 dport=61033 packets=1 bytes=49 mark=0 use=1
udp      17 28 src=1.1.1.1 dst=3.3.3.3 sport=10000 dport=53 packets=1 bytes=68 [UNREPLIED] src=3.3.3.3 dst=2.2.2.2 sport=53 dport=10000 packets=0 bytes=0 mark=0 use=1

And a "port 61033 unreachable" ICMP packet is sent back.

The issue is that when PRE_ROUTING hooks are called from vrf_l3_rcv(),
the skb already has a conntrack flow attached to it, which means
nf_conntrack_in() will not resolve the flow again.

This means only the dest port is "reverse-NATed" (61033 -> 10000) but
the dest IP remains 2.2.2.2, and since the socket is bound to 1.1.1.1 it's
not received.
This can be verified by logging the 4-tuple of the packet in '__udp4_lib_rcv()'.

The fix is then to reset the flow when skb is received on a VRF, to let
conntrack resolve the flow again (which now will hit the earlier flow).

To reproduce: (Without the fix "Got pkt_to_nat_port" will not be printed by
  running 'bash ./repro'):
  $ cat run_in_A1.py
  import logging
  logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
  from scapy.all import *
  import argparse

  def get_packet_to_send(udp_dst_port, msg_name):
      return Ether(src='11:22:33:44:55:66', dst=iface_mac)/ \
          IP(src='3.3.3.3', dst='2.2.2.2')/ \
          UDP(sport=53, dport=udp_dst_port)/ \
          Raw(f'{msg_name}\x0012345678901234567890')

  parser = argparse.ArgumentParser()
  parser.add_argument('-iface_mac', dest="iface_mac", type=str, required=True,
                      help="From run_in_A3.py")
  parser.add_argument('-socket_port', dest="socket_port", type=str,
                      required=True, help="From run_in_A3.py")
  parser.add_argument('-v1_mac', dest="v1_mac", type=str, required=True,
                      help="From script")

  args, _ = parser.parse_known_args()
  iface_mac = args.iface_mac
  socket_port = int(args.socket_port)
  v1_mac = args.v1_mac

  print(f'Source port before NAT: {socket_port}')

  while True:
      pkts = sniff(iface='_v0', store=True, count=1, timeout=10)
      if 0 == len(pkts):
          print('Something failed, rerun the script :(', flush=True)
          break
      pkt = pkts[0]
      if not pkt.haslayer('UDP'):
          continue

      pkt_sport = pkt.getlayer('UDP').sport
      print(f'Source port after NAT: {pkt_sport}', flush=True)

      pkt_to_send = get_packet_to_send(pkt_sport, 'pkt_to_nat_port')
      sendp(pkt_to_send, '_v0', verbose=False) # Will not be received

      pkt_to_send = get_packet_to_send(socket_port, 'pkt_to_socket_port')
      sendp(pkt_to_send, '_v0', verbose=False)
      break

  $ cat run_in_A2.py
  import socket
  import netifaces

  print(f"{netifaces.ifaddresses('e00000')[netifaces.AF_LINK][0]['addr']}",
        flush=True)
  s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
  s.setsockopt(socket.SOL_SOCKET, socket.SO_BINDTODEVICE,
               str('vrf_1' + '\0').encode('utf-8'))
  s.connect(('3.3.3.3', 53))
  print(f'{s. getsockname()[1]}', flush=True)
  s.settimeout(5)

  while True:
      try:
          # Periodically send in order to keep the conntrack entry alive.
          s.send(b'a'*40)
          resp = s.recvfrom(1024)
          msg_name = resp[0].decode('utf-8').split('\0')[0]
          print(f"Got {msg_name}", flush=True)
      except Exception as e:
          pass

  $ cat repro.sh
  ip netns del A1 2> /dev/null
  ip netns del A2 2> /dev/null
  ip netns add A1
  ip netns add A2

  ip -n A1 link add _v0 type veth peer name _v1 netns A2
  ip -n A1 link set _v0 up

  ip -n A2 link add e00000 type bond
  ip -n A2 link add lo0 type dummy
  ip -n A2 link add vrf_1 type vrf table 10001
  ip -n A2 link set vrf_1 up
  ip -n A2 link set e00000 master vrf_1

  ip -n A2 addr add 1.1.1.1/24 dev e00000
  ip -n A2 link set e00000 up
  ip -n A2 link set _v1 master e00000
  ip -n A2 link set _v1 up
  ip -n A2 link set lo0 up
  ip -n A2 addr add 2.2.2.2/32 dev lo0

  ip -n A2 neigh add 1.1.1.10 lladdr 77:77:77:77:77:77 dev e00000
  ip -n A2 route add 3.3.3.3/32 via 1.1.1.10 dev e00000 table 10001

  ip netns exec A2 iptables -t nat -A POSTROUTING -p udp -m udp --dport 53 -j \
SNAT --to-source 2.2.2.2 -o vrf_1

  sleep 5
  ip netns exec A2 python3 run_in_A2.py > x &
  XPID=$!
  sleep 5

  IFACE_MAC=`sed -n 1p x`
  SOCKET_PORT=`sed -n 2p x`
  V1_MAC=`ip -n A2 link show _v1 | sed -n 2p | awk '{print $2'}`
  ip netns exec A1 python3 run_in_A1.py -iface_mac ${IFACE_MAC} -socket_port \
          ${SOCKET_PORT} -v1_mac ${SOCKET_PORT}
  sleep 5

  kill -9 $XPID
  wait $XPID 2> /dev/null
  ip netns del A1
  ip netns del A2
  tail x -n 2
  rm x
  set +x

Fixes: 73e20b761acf ("net: vrf: Add support for PREROUTING rules on vrf device")
Signed-off-by: Lahav Schlesinger <lschlesinger@drivenets.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20210815120002.2787653-1-lschlesinger@drivenets.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge tag 'qcom-arm64-fixes-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Mon, 16 Aug 2021 21:22:02 +0000 (23:22 +0200)]
Merge tag 'qcom-arm64-fixes-for-5.14' of git://git./linux/kernel/git/qcom/linux into arm/fixes

Qualcomm ARM64 fixes for v5.14

This fixes three regressions across Angler and Bullhead, introduced by
advancements in the platform definition. It then corrects the powerdown
GPIOs for the speaker amps on C630 and lastly fixes a typo that assigned
CPU7 in SC7280 to the wrong CPUfreq domain.

* tag 'qcom-arm64-fixes-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
  arm64: dts: qcom: sdm845-oneplus: fix reserved-mem
  arm64: dts: qcom: msm8994-angler: Disable cont_splash_mem
  arm64: dts: qcom: sc7280: Fixup cpufreq domain info for cpu7
  arm64: dts: qcom: msm8992-bullhead: Fix cont_splash_mem mapping
  arm64: dts: qcom: msm8992-bullhead: Remove PSCI
  arm64: dts: qcom: c630: fix correct powerdown pin for WSA881x

Link: https://lore.kernel.org/r/20210816205030.576348-1-bjorn.andersson@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoMerge tag 'soc-fsl-fix-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/leo...
Arnd Bergmann [Mon, 16 Aug 2021 20:41:59 +0000 (22:41 +0200)]
Merge tag 'soc-fsl-fix-v5.14' of git://git./linux/kernel/git/leo/linux into arm/fixes

NXP/FSL SoC driver fixes for v5.14

QE interrupt controller driver
- Convert it to platform_device driver to make it work with fw_devlink
- Fix static analysis issue

* tag 'soc-fsl-fix-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux:
  soc: fsl: qe: fix static checker warning
  soc: fsl: qe: convert QE interrupt controller to platform_device

Link: https://lore.kernel.org/r/20210813222305.13663-1-leoyang.li@nxp.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agodrm/amd/display: Ensure DCN save after VM setup
Jake Wang [Thu, 5 Aug 2021 18:43:41 +0000 (14:43 -0400)]
drm/amd/display: Ensure DCN save after VM setup

[Why]
DM initializes VM context after DMCUB initialization.
This results in loss of DCN_VM_CONTEXT registers after z10.

[How]
Notify DMCUB when VM setup is complete, and have DMCUB
save init registers.

v2: squash in CONFIG_DRM_AMD_DC_DCN3_1 fix

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Jake Wang <haonan.wang2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdkfd: fix random KFDSVMRangeTest.SetGetAttributesTest test failure
Yifan Zhang [Tue, 10 Aug 2021 03:01:05 +0000 (11:01 +0800)]
drm/amdkfd: fix random KFDSVMRangeTest.SetGetAttributesTest test failure

KFDSVMRangeTest.SetGetAttributesTest randomly fails in stress test.

Note: Google Test filter = KFDSVMRangeTest.*
[==========] Running 18 tests from 1 test case.
[----------] Global test environment set-up.
[----------] 18 tests from KFDSVMRangeTest
[ RUN      ] KFDSVMRangeTest.BasicSystemMemTest
[       OK ] KFDSVMRangeTest.BasicSystemMemTest (30 ms)
[ RUN      ] KFDSVMRangeTest.SetGetAttributesTest
[          ] Get default atrributes
/home/yifan/brahma/libhsakmt/tests/kfdtest/src/KFDSVMRangeTest.cpp:154: Failure
Value of: expectedDefaultResults[i]
  Actual: 4294967295
Expected: outputAttributes[i].value
Which is: 0
/home/yifan/brahma/libhsakmt/tests/kfdtest/src/KFDSVMRangeTest.cpp:154: Failure
Value of: expectedDefaultResults[i]
  Actual: 4294967295
Expected: outputAttributes[i].value
Which is: 0
/home/yifan/brahma/libhsakmt/tests/kfdtest/src/KFDSVMRangeTest.cpp:152: Failure
Value of: expectedDefaultResults[i]
  Actual: 4
Expected: outputAttributes[i].type
Which is: 2
[          ] Setting/Getting atrributes
[  FAILED  ]

the root cause is that svm work queue has not finished when svm_range_get_attr is called, thus
some garbage svm interval tree data make svm_range_get_attr get wrong result. Flush work queue before
iterate svm interval tree.

Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/pm: change the workload type for some cards
Kenneth Feng [Fri, 13 Aug 2021 06:40:18 +0000 (14:40 +0800)]
drm/amd/pm: change the workload type for some cards

change the workload type for some cards as it is needed.

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agoRevert "drm/amd/pm: fix workload mismatch on vega10"
Kenneth Feng [Fri, 13 Aug 2021 06:20:33 +0000 (14:20 +0800)]
Revert "drm/amd/pm: fix workload mismatch on vega10"

This reverts commit 0979d43259e13846d86ba17e451e17fec185d240.
Revert this because it does not apply to all the cards.

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agoMerge tag 'mtd/fixes-for-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 16 Aug 2021 16:36:01 +0000 (06:36 -1000)]
Merge tag 'mtd/fixes-for-5.14-rc7' of git://git./linux/kernel/git/mtd/linux

Pull MTD fixes from Miquel Raynal:
 "MTD core fixes:
   - Fix lock hierarchy in deregister_mtd_blktrans
   - Handle flashes without OTP gracefully
   - Break circular locks in register_mtd_blktrans

  MTD device fixes:
   - mchp48l640:
      - Fix memory leak on cmd
      - Silence some uninitialized variable warnings
   - blkdevs:
      - Initialize rq.limits.discard_granularity

  CFI fixes:
   - Fix crash when erasing/writing AMD cards

  Raw NAND fixes:
   - Fix of_get_nand_secure_regions():
      - Add a missing check
      - Avoid an unwanted probe failure when a DT property is missing"

* tag 'mtd/fixes-for-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
  mtd: rawnand: Fix probe failure due to of_get_nand_secure_regions()
  mtd: fix lock hierarchy in deregister_mtd_blktrans
  mtd: devices: mchp48l640: Fix memory leak on cmd
  mtd: cfi_cmdset_0002: fix crash when erasing/writing AMD cards
  mtd: core: handle flashes without OTP gracefully
  mtd: mchp48l640: silence some uninitialized variable warnings
  mtd: break circular locks in register_mtd_blktrans
  mtd: rawnand: Add a check in of_get_nand_secure_regions()
  mtd: mtd_blkdevs: Initialize rq.limits.discard_granularity

2 years agoMerge tag 'trace-v5.14-rc5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rosted...
Linus Torvalds [Mon, 16 Aug 2021 16:31:06 +0000 (06:31 -1000)]
Merge tag 'trace-v5.14-rc5-2' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Fixes and clean ups to tracing:

   - Fix header alignment when PREEMPT_RT is enabled for osnoise tracer

   - Inject "stop" event to see where osnoise stopped the trace

   - Define DYNAMIC_FTRACE_WITH_ARGS as some code had an #ifdef for it

   - Fix erroneous message for bootconfig cmdline parameter

   - Fix crash caused by not found variable in histograms"

* tag 'trace-v5.14-rc5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing / histogram: Fix NULL pointer dereference on strcmp() on NULL event name
  init: Suppress wrong warning for bootconfig cmdline parameter
  tracing: define needed config DYNAMIC_FTRACE_WITH_ARGS
  trace/osnoise: Print a stop tracing message
  trace/timerlat: Add a header with PREEMPT_RT additional fields
  trace/osnoise: Add a header with PREEMPT_RT additional fields

2 years agoACPI: PM: s2idle: Invert Microsoft UUID entry and exit
Mario Limonciello [Tue, 10 Aug 2021 01:40:04 +0000 (20:40 -0500)]
ACPI: PM: s2idle: Invert Microsoft UUID entry and exit

It was reported by a user with a Dell m15 R5 (5800H) that
the keyboard backlight was turning on when entering suspend
and turning off when exiting (the opposite of how it should be).

The user bisected it back to commit 5dbf50997578 ("ACPI: PM:
s2idle: Add support for new Microsoft UUID").  Previous to that
commit the LEDs didn't turn off at all.  Confirming in the spec,
these were reversed when introduced.

Fix them to match the spec.

BugLink: https://gitlab.freedesktop.org/drm/amd/-/issues/1230#note_1021836
Fixes: 5dbf50997578 ("ACPI: PM: s2idle: Add support for new Microsoft UUID")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Mon, 16 Aug 2021 16:23:26 +0000 (06:23 -1000)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Two nested virtualization fixes for AMD processors"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: nSVM: always intercept VMLOAD/VMSAVE when nested (CVE-2021-3656)
  KVM: nSVM: avoid picking up unsupported bits from L2 in int_ctl (CVE-2021-3653)

2 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Mon, 16 Aug 2021 16:16:25 +0000 (06:16 -1000)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "Fixes in virtio, vhost, and vdpa drivers"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vdpa/mlx5: Fix queue type selection logic
  vdpa/mlx5: Avoid destroying MR on empty iotlb
  tools/virtio: fix build
  virtio_ring: pull in spinlock header
  vringh: pull in spinlock header
  virtio-blk: Add validation for block size in config space
  vringh: Use wiov->used to check for read/write desc order
  virtio_vdpa: reject invalid vq indices
  vdpa: Add documentation for vdpa_alloc_device() macro
  vDPA/ifcvf: Fix return value check for vdpa_alloc_device()
  vp_vdpa: Fix return value check for vdpa_alloc_device()
  vdpa_sim: Fix return value check for vdpa_alloc_device()
  vhost: Fix the calculation in vhost_overflow()
  vhost-vdpa: Fix integer overflow in vhost_vdpa_process_iotlb_update()
  virtio_pci: Support surprise removal of virtio pci device
  virtio: Protect vqs list access
  virtio: Keep vring_del_virtqueue() mirror of VQ create
  virtio: Improve vq->broken access to avoid any compiler optimization

2 years agoACPI: PRM: Deal with table not present or no module found
Aubrey Li [Fri, 6 Aug 2021 00:46:24 +0000 (08:46 +0800)]
ACPI: PRM: Deal with table not present or no module found

On the system PRMT table is not present, dmesg output:

$ dmesg | grep PRM
[    1.532237] ACPI: PRMT not present
[    1.532237] PRM: found 4294967277 modules

The result of acpi_table_parse_entries need to be checked and return
immediately if PRMT table is not present or no PRM module found.

Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2 years agotracing: Apply trace filters on all output channels
Pingfan Liu [Sat, 14 Aug 2021 03:45:38 +0000 (11:45 +0800)]
tracing: Apply trace filters on all output channels

The event filters are not applied on all of the output, which results in
the flood of printk when using tp_printk. Unfolding
event_trigger_unlock_commit_regs() into trace_event_buffer_commit(), so
the filters can be applied on every output.

Link: https://lkml.kernel.org/r/20210814034538.8428-1-kernelfans@gmail.com
Cc: stable@vger.kernel.org
Fixes: 0daa2302968c1 ("tracing: Add tp_printk cmdline to have tracepoints go to printk()")
Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2 years agoMerge branch 'opp/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Rafael J. Wysocki [Mon, 16 Aug 2021 14:43:46 +0000 (16:43 +0200)]
Merge branch 'opp/fixes' of git://git./linux/kernel/git/vireshk/pm

Pull operating performance points (OPP) framework fixes for v5.14
from iresh Kumar:

"This removes few WARN() statements from the OPP core."

* 'opp/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  opp: Drop empty-table checks from _put functions
  opp: remove WARN when no valid OPPs remain

2 years agoKVM: nSVM: always intercept VMLOAD/VMSAVE when nested (CVE-2021-3656)
Maxim Levitsky [Mon, 19 Jul 2021 13:05:00 +0000 (16:05 +0300)]
KVM: nSVM: always intercept VMLOAD/VMSAVE when nested (CVE-2021-3656)

If L1 disables VMLOAD/VMSAVE intercepts, and doesn't enable
Virtual VMLOAD/VMSAVE (currently not supported for the nested hypervisor),
then VMLOAD/VMSAVE must operate on the L1 physical memory, which is only
possible by making L0 intercept these instructions.

Failure to do so allowed the nested guest to run VMLOAD/VMSAVE unintercepted,
and thus read/write portions of the host physical memory.

Fixes: 89c8a4984fc9 ("KVM: SVM: Enable Virtual VMLOAD VMSAVE feature")

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agoKVM: nSVM: avoid picking up unsupported bits from L2 in int_ctl (CVE-2021-3653)
Maxim Levitsky [Wed, 14 Jul 2021 22:56:24 +0000 (01:56 +0300)]
KVM: nSVM: avoid picking up unsupported bits from L2 in int_ctl (CVE-2021-3653)

* Invert the mask of bits that we pick from L2 in
  nested_vmcb02_prepare_control

* Invert and explicitly use VIRQ related bits bitmask in svm_clear_vintr

This fixes a security issue that allowed a malicious L1 to run L2 with
AVIC enabled, which allowed the L2 to exploit the uninitialized and enabled
AVIC to read/write the host physical memory at some offsets.

Fixes: 3d6368ef580a ("KVM: SVM: Add VMRUN handler")
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 years agonet: iosm: Prevent underflow in ipc_chnl_cfg_get()
Dan Carpenter [Mon, 16 Aug 2021 11:13:33 +0000 (14:13 +0300)]
net: iosm: Prevent underflow in ipc_chnl_cfg_get()

The bounds check on "index" doesn't catch negative values.  Using
ARRAY_SIZE() directly is more readable and more robust because it prevents
negative values for "index".  Fortunately we only pass valid values to
ipc_chnl_cfg_get() so this patch does not affect runtime.

Reported-by: Solomon Ucko <solly.ucko@gmail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: M Chetan Kumar <m.chetan.kumar@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodrm: ttm: Don't bail from ttm_global_init if debugfs_create_dir fails
Dan Moulding [Tue, 10 Aug 2021 19:59:06 +0000 (13:59 -0600)]
drm: ttm: Don't bail from ttm_global_init if debugfs_create_dir fails

In 69de4421bb4c ("drm/ttm: Initialize debugfs from
ttm_global_init()"), ttm_global_init was changed so that if creation
of the debugfs global root directory fails, ttm_global_init will bail
out early and return an error, leading to initialization failure of
DRM drivers. However, not every system will be using debugfs. On such
a system, debugfs directory creation can be expected to fail, but DRM
drivers must still be usable. This changes it so that if creation of
TTM's debugfs root directory fails, then no biggie: keep calm and
carry on.

Fixes: 69de4421bb4c ("drm/ttm: Initialize debugfs from ttm_global_init()")
Signed-off-by: Dan Moulding <dmoulding@me.com>
Tested-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210810195906.22220-2-dmoulding@me.com
Signed-off-by: Christian König <christian.koenig@amd.com>
2 years agobtrfs: prevent rename2 from exchanging a subvol with a directory from different parents
NeilBrown [Fri, 6 Aug 2021 04:26:24 +0000 (14:26 +1000)]
btrfs: prevent rename2 from exchanging a subvol with a directory from different parents

Cross-rename lacks a check when that would prevent exchanging a
directory and subvolume from different parent subvolume. This causes
data inconsistencies and is caught before commit by tree-checker,
turning the filesystem to read-only.

Calling the renameat2 with RENAME_EXCHANGE flags like

  renameat2(AT_FDCWD, namesrc, AT_FDCWD, namedest, (1 << 1))

on two paths:

  namesrc = dir1/subvol1/dir2
 namedest = subvol2/subvol3

will cause key order problem with following write time tree-checker
report:

  [1194842.307890] BTRFS critical (device loop1): corrupt leaf: root=5 block=27574272 slot=10 ino=258, invalid previous key objectid, have 257 expect 258
  [1194842.322221] BTRFS info (device loop1): leaf 27574272 gen 8 total ptrs 11 free space 15444 owner 5
  [1194842.331562] BTRFS info (device loop1): refs 2 lock_owner 0 current 26561
  [1194842.338772]        item 0 key (256 1 0) itemoff 16123 itemsize 160
  [1194842.338793]                inode generation 3 size 16 mode 40755
  [1194842.338801]        item 1 key (256 12 256) itemoff 16111 itemsize 12
  [1194842.338809]        item 2 key (256 84 2248503653) itemoff 16077 itemsize 34
  [1194842.338817]                dir oid 258 type 2
  [1194842.338823]        item 3 key (256 84 2363071922) itemoff 16043 itemsize 34
  [1194842.338830]                dir oid 257 type 2
  [1194842.338836]        item 4 key (256 96 2) itemoff 16009 itemsize 34
  [1194842.338843]        item 5 key (256 96 3) itemoff 15975 itemsize 34
  [1194842.338852]        item 6 key (257 1 0) itemoff 15815 itemsize 160
  [1194842.338863]                inode generation 6 size 8 mode 40755
  [1194842.338869]        item 7 key (257 12 256) itemoff 15801 itemsize 14
  [1194842.338876]        item 8 key (257 84 2505409169) itemoff 15767 itemsize 34
  [1194842.338883]                dir oid 256 type 2
  [1194842.338888]        item 9 key (257 96 2) itemoff 15733 itemsize 34
  [1194842.338895]        item 10 key (258 12 256) itemoff 15719 itemsize 14
  [1194842.339163] BTRFS error (device loop1): block=27574272 write time tree block corruption detected
  [1194842.339245] ------------[ cut here ]------------
  [1194842.443422] WARNING: CPU: 6 PID: 26561 at fs/btrfs/disk-io.c:449 csum_one_extent_buffer+0xed/0x100 [btrfs]
  [1194842.511863] CPU: 6 PID: 26561 Comm: kworker/u17:2 Not tainted 5.14.0-rc3-git+ #793
  [1194842.511870] Hardware name: empty empty/S3993, BIOS PAQEX0-3 02/24/2008
  [1194842.511876] Workqueue: btrfs-worker-high btrfs_work_helper [btrfs]
  [1194842.511976] RIP: 0010:csum_one_extent_buffer+0xed/0x100 [btrfs]
  [1194842.512068] RSP: 0018:ffffa2c284d77da0 EFLAGS: 00010282
  [1194842.512074] RAX: 0000000000000000 RBX: 0000000000001000 RCX: ffff928867bd9978
  [1194842.512078] RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff928867bd9970
  [1194842.512081] RBP: ffff92876b958000 R08: 0000000000000001 R09: 00000000000c0003
  [1194842.512085] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
  [1194842.512088] R13: ffff92875f989f98 R14: 0000000000000000 R15: 0000000000000000
  [1194842.512092] FS:  0000000000000000(0000) GS:ffff928867a00000(0000) knlGS:0000000000000000
  [1194842.512095] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [1194842.512099] CR2: 000055f5384da1f0 CR3: 0000000102fe4000 CR4: 00000000000006e0
  [1194842.512103] Call Trace:
  [1194842.512128]  ? run_one_async_free+0x10/0x10 [btrfs]
  [1194842.631729]  btree_csum_one_bio+0x1ac/0x1d0 [btrfs]
  [1194842.631837]  run_one_async_start+0x18/0x30 [btrfs]
  [1194842.631938]  btrfs_work_helper+0xd5/0x1d0 [btrfs]
  [1194842.647482]  process_one_work+0x262/0x5e0
  [1194842.647520]  worker_thread+0x4c/0x320
  [1194842.655935]  ? process_one_work+0x5e0/0x5e0
  [1194842.655946]  kthread+0x135/0x160
  [1194842.655953]  ? set_kthread_struct+0x40/0x40
  [1194842.655965]  ret_from_fork+0x1f/0x30
  [1194842.672465] irq event stamp: 1729
  [1194842.672469] hardirqs last  enabled at (1735): [<ffffffffbd1104f5>] console_trylock_spinning+0x185/0x1a0
  [1194842.672477] hardirqs last disabled at (1740): [<ffffffffbd1104cc>] console_trylock_spinning+0x15c/0x1a0
  [1194842.672482] softirqs last  enabled at (1666): [<ffffffffbdc002e1>] __do_softirq+0x2e1/0x50a
  [1194842.672491] softirqs last disabled at (1651): [<ffffffffbd08aab7>] __irq_exit_rcu+0xa7/0xd0

The corrupted data will not be written, and filesystem can be unmounted
and mounted again (all changes since the last commit will be lost).

Add the missing check for new_ino so that all non-subvolumes must reside
under the same parent subvolume. There's an exception allowing to
exchange two subvolumes from any parents as the directory representing a
subvolume is only a logical link and does not have any other structures
related to the parent subvolume, unlike files, directories etc, that
are always in the inode namespace of the parent subvolume.

Fixes: cdd1fedf8261 ("btrfs: add support for RENAME_EXCHANGE and RENAME_WHITEOUT")
CC: stable@vger.kernel.org # 4.7+
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2 years agoMerge branch 'bnxt_en-fixes'
David S. Miller [Mon, 16 Aug 2021 10:31:41 +0000 (11:31 +0100)]
Merge branch 'bnxt_en-fixes'

Michael Chan says:

====================
bnxt_en: 2 bug fixes

The first one disables aRFS/NTUPLE on an older broken firmware version.
The second one adds missing memory barriers related to completion ring
handling.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agobnxt_en: Add missing DMA memory barriers
Michael Chan [Sun, 15 Aug 2021 20:15:37 +0000 (16:15 -0400)]
bnxt_en: Add missing DMA memory barriers

Each completion ring entry has a valid bit to indicate that the entry
contains a valid completion event.  The driver's main poll loop
__bnxt_poll_work() has the proper dma_rmb() to make sure the valid
bit of the next entry has been checked before proceeding further.
But when we call bnxt_rx_pkt() to process the RX event, the RX
completion event consists of two completion entries and only the
first entry has been checked to be valid.  We need the same barrier
after checking the next completion entry.  Add missing dma_rmb()
barriers in bnxt_rx_pkt() and other similar locations.

Fixes: 67a95e2022c7 ("bnxt_en: Need memory barrier when processing the completion ring.")
Reported-by: Lance Richardson <lance.richardson@broadcom.com>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Reviewed-by: Lance Richardson <lance.richardson@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agobnxt_en: Disable aRFS if running on 212 firmware
Michael Chan [Sun, 15 Aug 2021 20:15:36 +0000 (16:15 -0400)]
bnxt_en: Disable aRFS if running on 212 firmware

212 firmware broke aRFS, so disable it.  Traffic may stop after ntuple
filters are inserted and deleted by the 212 firmware.

Fixes: ae10ae740ad2 ("bnxt_en: Add new hardware RFS mode.")
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoqed: Fix null-pointer dereference in qed_rdma_create_qp()
Shai Malin [Sun, 15 Aug 2021 11:06:39 +0000 (14:06 +0300)]
qed: Fix null-pointer dereference in qed_rdma_create_qp()

Fix a possible null-pointer dereference in qed_rdma_create_qp().

Changes from V2:
- Revert checkpatch fixes.

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoqed: qed ll2 race condition fixes
Shai Malin [Sun, 15 Aug 2021 11:05:08 +0000 (14:05 +0300)]
qed: qed ll2 race condition fixes

Avoiding qed ll2 race condition and NULL pointer dereference as part
of the remove and recovery flows.

Changes form V1:
- Change (!p_rx->set_prod_addr).
- qed_ll2.c checkpatch fixes.

Change from V2:
- Revert "qed_ll2.c checkpatch fixes".

Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agotipc: call tipc_wait_for_connect only when dlen is not 0
Xin Long [Sun, 15 Aug 2021 07:13:36 +0000 (03:13 -0400)]
tipc: call tipc_wait_for_connect only when dlen is not 0

__tipc_sendmsg() is called to send SYN packet by either tipc_sendmsg()
or tipc_connect(). The difference is in tipc_connect(), it will call
tipc_wait_for_connect() after __tipc_sendmsg() to wait until connecting
is done. So there's no need to wait in __tipc_sendmsg() for this case.

This patch is to fix it by calling tipc_wait_for_connect() only when dlen
is not 0 in __tipc_sendmsg(), which means it's called by tipc_connect().

Note this also fixes the failure in tipcutils/test/ptts/:

  # ./tipcTS &
  # ./tipcTC 9
  (hang)

Fixes: 36239dab6da7 ("tipc: fix implicit-connect for SYN+")
Reported-by: Shuang Li <shuali@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agommc: sdhci-iproc: Set SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN on BCM2711
Nicolas Saenz Julienne [Sat, 7 Aug 2021 11:06:36 +0000 (13:06 +0200)]
mmc: sdhci-iproc: Set SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN on BCM2711

The controller doesn't seem to pick-up on clock changes, so set the
SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN flag to query the clock frequency
directly from the clock.

Fixes: f84e411c85be ("mmc: sdhci-iproc: Add support for emmc2 of the BCM2711")
Signed-off-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1628334401-6577-6-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2 years agoptp_pch: Restore dependency on PCI
Andy Shevchenko [Fri, 13 Aug 2021 17:33:27 +0000 (20:33 +0300)]
ptp_pch: Restore dependency on PCI

During the swap dependency on PCH_GBE to selection PTP_1588_CLOCK_PCH
incidentally dropped the implicit dependency on the PCI. Restore it.

Fixes: 18d359ceb044 ("pch_gbe, ptp_pch: Fix the dependency direction between these drivers")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agommc: sdhci-iproc: Cap min clock frequency on BCM2711
Nicolas Saenz Julienne [Sat, 7 Aug 2021 11:06:35 +0000 (13:06 +0200)]
mmc: sdhci-iproc: Cap min clock frequency on BCM2711

There is a known bug on BCM2711's SDHCI core integration where the
controller will hang when the difference between the core clock and the
bus clock is too great. Specifically this can be reproduced under the
following conditions:

- No SD card plugged in, polling thread is running, probing cards at
  100 kHz.
- BCM2711's core clock configured at 500MHz or more.

So set 200 kHz as the minimum clock frequency available for that board.

For more information on the issue see this:
https://lore.kernel.org/linux-mmc/20210322185816.27582-1-nsaenz@kernel.org/T/#m11f2783a09b581da6b8a15f302625b43a6ecdeca

Fixes: f84e411c85be ("mmc: sdhci-iproc: Add support for emmc2 of the BCM2711")
Signed-off-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1628334401-6577-5-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2 years agonet: 6pack: fix slab-out-of-bounds in decode_data
Pavel Skripkin [Fri, 13 Aug 2021 15:14:33 +0000 (18:14 +0300)]
net: 6pack: fix slab-out-of-bounds in decode_data

Syzbot reported slab-out-of bounds write in decode_data().
The problem was in missing validation checks.

Syzbot's reproducer generated malicious input, which caused
decode_data() to be called a lot in sixpack_decode(). Since
rx_count_cooked is only 400 bytes and noone reported before,
that 400 bytes is not enough, let's just check if input is malicious
and complain about buffer overrun.

Fail log:
==================================================================
BUG: KASAN: slab-out-of-bounds in drivers/net/hamradio/6pack.c:843
Write of size 1 at addr ffff888087c5544e by task kworker/u4:0/7

CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.6.0-rc3-syzkaller #0
...
Workqueue: events_unbound flush_to_ldisc
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd4/0x30b mm/kasan/report.c:374
 __kasan_report.cold+0x1b/0x32 mm/kasan/report.c:506
 kasan_report+0x12/0x20 mm/kasan/common.c:641
 __asan_report_store1_noabort+0x17/0x20 mm/kasan/generic_report.c:137
 decode_data.part.0+0x23b/0x270 drivers/net/hamradio/6pack.c:843
 decode_data drivers/net/hamradio/6pack.c:965 [inline]
 sixpack_decode drivers/net/hamradio/6pack.c:968 [inline]

Reported-and-tested-by: syzbot+fc8cd9a673d4577fb2e4@syzkaller.appspotmail.com
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoopp: Drop empty-table checks from _put functions
Dmitry Osipenko [Sun, 15 Aug 2021 16:43:44 +0000 (19:43 +0300)]
opp: Drop empty-table checks from _put functions

The current_opp is released only when whole OPP table is released,
otherwise it's only marked as removed by dev_pm_opp_remove_table().
Functions like dev_pm_opp_put_clkname() and dev_pm_opp_put_supported_hw()
are checking whether OPP table is empty and it's not if current_opp is
set since it holds the refcount of OPP, this produces a noisy warning
from these functions about busy OPP table. Remove the checks to fix it.

Cc: stable@vger.kernel.org
Fixes: 81c4d8a3c414 ("opp: Keep track of currently programmed OPP")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2 years agoLinux 5.14-rc6
Linus Torvalds [Sun, 15 Aug 2021 23:40:53 +0000 (13:40 -1000)]
Linux 5.14-rc6

2 years agoMerge tag 'powerpc-5.14-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 15 Aug 2021 16:57:43 +0000 (06:57 -1000)]
Merge tag 'powerpc-5.14-5' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix crashes coming out of nap on 32-bit Book3s (eg. powerbooks).

 - Fix critical and debug interrupts on BookE, seen as crashes when
   using ptrace.

 - Fix an oops when running an SMP kernel on a UP system.

 - Update pseries LPAR security flavor after partition migration.

 - Fix an oops when using kprobes on BookE.

 - Fix oops on 32-bit pmac by not calling do_IRQ() from
   timer_interrupt().

 - Fix softlockups on CPU hotplug into a CPU-less node with xive (P9).

Thanks to Cédric Le Goater, Christophe Leroy, Finn Thain, Geetika
Moolchandani, Laurent Dufour, Laurent Vivier, Nicholas Piggin, Pu Lehui,
Radu Rendec, Srikar Dronamraju, and Stan Johnson.

* tag 'powerpc-5.14-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/xive: Do not skip CPU-less nodes when creating the IPIs
  powerpc/interrupt: Do not call single_step_exception() from other exceptions
  powerpc/interrupt: Fix OOPS by not calling do_IRQ() from timer_interrupt()
  powerpc/kprobes: Fix kprobe Oops happens in booke
  powerpc/pseries: Fix update of LPAR security flavor after LPM
  powerpc/smp: Fix OOPS in topology_init()
  powerpc/32: Fix critical and debug interrupts on BOOKE
  powerpc/32s: Fix napping restore in data storage interrupt (DSI)

2 years agoMerge tag 'irq-urgent-2021-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 15 Aug 2021 16:49:40 +0000 (06:49 -1000)]
Merge tag 'irq-urgent-2021-08-15' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A set of fixes for PCI/MSI and x86 interrupt startup:

   - Mask all MSI-X entries when enabling MSI-X otherwise stale unmasked
     entries stay around e.g. when a crashkernel is booted.

   - Enforce masking of a MSI-X table entry when updating it, which
     mandatory according to speification

   - Ensure that writes to MSI[-X} tables are flushed.

   - Prevent invalid bits being set in the MSI mask register

   - Properly serialize modifications to the mask cache and the mask
     register for multi-MSI.

   - Cure the violation of the affinity setting rules on X86 during
     interrupt startup which can cause lost and stale interrupts. Move
     the initial affinity setting ahead of actualy enabling the
     interrupt.

   - Ensure that MSI interrupts are completely torn down before freeing
     them in the error handling case.

   - Prevent an array out of bounds access in the irq timings code"

* tag 'irq-urgent-2021-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  driver core: Add missing kernel doc for device::msi_lock
  genirq/msi: Ensure deactivation on teardown
  genirq/timings: Prevent potential array overflow in __irq_timings_store()
  x86/msi: Force affinity setup before startup
  x86/ioapic: Force affinity setup before startup
  genirq: Provide IRQCHIP_AFFINITY_PRE_STARTUP
  PCI/MSI: Protect msi_desc::masked for multi-MSI
  PCI/MSI: Use msi_mask_irq() in pci_msi_shutdown()
  PCI/MSI: Correct misleading comments
  PCI/MSI: Do not set invalid bits in MSI mask
  PCI/MSI: Enforce MSI[X] entry updates to be visible
  PCI/MSI: Enforce that MSI-X table entry is masked for update
  PCI/MSI: Mask all unused MSI-X entries
  PCI/MSI: Enable and mask MSI-X early

2 years agoMerge tag 'locking_urgent_for_v5.14_rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 15 Aug 2021 16:46:04 +0000 (06:46 -1000)]
Merge tag 'locking_urgent_for_v5.14_rc6' of git://git./linux/kernel/git/tip/tip

Pull locking fix from Borislav Petkov:

 - Fix a CONFIG symbol's spelling

* tag 'locking_urgent_for_v5.14_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rtmutex: Use the correct rtmutex debugging config option

2 years agoMerge tag 'efi_urgent_for_v5.14_rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 15 Aug 2021 16:38:26 +0000 (06:38 -1000)]
Merge tag 'efi_urgent_for_v5.14_rc6' of git://git./linux/kernel/git/tip/tip

Pull EFI fixes from Borislav Petkov:
 "A batch of fixes for the arm64 stub image loader:

   - fix a logic bug that can make the random page allocator fail
     spuriously

   - force reallocation of the Image when it overlaps with firmware
     reserved memory regions

   - fix an oversight that defeated on optimization introduced earlier
     where images loaded at a suitable offset are never moved if booting
     without randomization

   - complain about images that were not loaded at the right offset by
     the firmware image loader"

* tag 'efi_urgent_for_v5.14_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/libstub: arm64: Double check image alignment at entry
  efi/libstub: arm64: Warn when efi_random_alloc() fails
  efi/libstub: arm64: Relax 2M alignment again for relocatable kernels
  efi/libstub: arm64: Force Image reallocation if BSS was not reserved
  arm64: efi: kaslr: Fix occasional random alloc (and boot) failure

2 years agoMerge tag 'x86_urgent_for_v5.14_rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 15 Aug 2021 16:30:24 +0000 (06:30 -1000)]
Merge tag 'x86_urgent_for_v5.14_rc6' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:
 "Two fixes:

   - An objdump checker fix to ignore parenthesized strings in the
     objdump version

   - Fix resctrl default monitoring groups reporting when new subgroups
     get created"

* tag 'x86_urgent_for_v5.14_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/resctrl: Fix default monitoring groups reporting
  x86/tools: Fix objdump version check again

2 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sun, 15 Aug 2021 16:21:30 +0000 (06:21 -1000)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "ARM:

   - Plug race between enabling MTE and creating vcpus

   - Fix off-by-one bug when checking whether an address range is RAM

  x86:

   - Fixes for the new MMU, especially a memory leak on hosts with <39
     physical address bits

   - Remove bogus EFER.NX checks on 32-bit non-PAE hosts

   - WAITPKG fix"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86/mmu: Protect marking SPs unsync when using TDP MMU with spinlock
  KVM: x86/mmu: Don't step down in the TDP iterator when zapping all SPTEs
  KVM: x86/mmu: Don't leak non-leaf SPTEs when zapping all SPTEs
  KVM: nVMX: Use vmx_need_pf_intercept() when deciding if L0 wants a #PF
  kvm: vmx: Sync all matching EPTPs when injecting nested EPT fault
  KVM: x86: remove dead initialization
  KVM: x86: Allow guest to set EFER.NX=1 on non-PAE 32-bit kernels
  KVM: VMX: Use current VMCS to query WAITPKG support for MSR emulation
  KVM: arm64: Fix race when enabling KVM_ARM_CAP_MTE
  KVM: arm64: Fix off-by-one in range_is_memory

2 years agoMerge tag 'icc-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov...
Greg Kroah-Hartman [Sun, 15 Aug 2021 09:21:02 +0000 (11:21 +0200)]
Merge tag 'icc-5.14-rc6' of git://git./linux/kernel/git/djakov/icc into char-misc-linus

Georgi writes:

interconnect fix for v5.14

This contains a revert for a patch that has been causing issues:
- Revert: qcom: rpmh: Add BCMs to commit list in pre_aggregate

Signed-off-by: Georgi Djakov <djakov@kernel.org>
* tag 'icc-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
  Revert "interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate"

2 years agoALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop
Kristin Paget [Sat, 14 Aug 2021 22:46:05 +0000 (15:46 -0700)]
ALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop

The 2021-model XPS 15 appears to use the same 4-speakers-on-ALC289 audio
setup as the Precision models, so requires the same quirk to enable woofer
output. Tested on my own 9510.

Signed-off-by: Kristin Paget <kristin@tombom.co.uk>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/e1fc95c5-c10a-1f98-a5c2-dd6e336157e1@tombom.co.uk
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sun, 15 Aug 2021 05:51:58 +0000 (19:51 -1000)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three minor fixes, all in drivers"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: mpt3sas: Fix incorrectly assigned error return and check
  scsi: storvsc: Log TEST_UNIT_READY errors as warnings
  scsi: lpfc: Move initialization of phba->poll_list earlier to avoid crash

2 years agoMerge tag 'libnvdimm-fixes-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 15 Aug 2021 05:46:39 +0000 (19:46 -1000)]
Merge tag 'libnvdimm-fixes-5.14-rc6' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:
 "A couple of fixes for long standing bugs, a warning fixup, and some
  miscellaneous dax cleanups.

  The bugs were recently found due to new platforms looking to use the
  ACPI NFIT "virtual" device definition, and new error injection
  capabilities to trigger error responses to label area requests. Ira's
  cleanups have been long pending, I neglected to send them earlier, and
  see no harm in including them now. This has all appeared in -next with
  no reported issues.

  Summary:

   - Fix support for NFIT "virtual" ranges (BIOS-defined memory disks)

   - Fix recovery from failed label storage areas on NVDIMM devices

   - Miscellaneous cleanups from Ira's investigation of
     dax_direct_access paths preparing for stray-write protection"

* tag 'libnvdimm-fixes-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  tools/testing/nvdimm: Fix missing 'fallthrough' warning
  libnvdimm/region: Fix label activation vs errors
  ACPI: NFIT: Fix support for virtual SPA ranges
  dax: Ensure errno is returned from dax_direct_access
  fs/dax: Clarify nr_pages to dax_direct_access()
  fs/fuse: Remove unneeded kaddr parameter

2 years agoMerge tag 'usb-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 15 Aug 2021 05:22:33 +0000 (19:22 -1000)]
Merge tag 'usb-5.14-rc6' of git://git./linux/kernel/git/gregkh/usb

Pull USB fix from Greg KH:
 "A single revert of a commit that caused problems in 5.14-rc5 for
  5.14-rc6. It has been in linux-next almost all week, and has resolved
  the issues that were reported on lots of different systems that were
  not the platform that the change was originally tested on (gotta love
  SoC cores used in multiple devices from multiple vendors...)"

* tag 'usb-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  Revert "usb: dwc3: gadget: Use list_replace_init() before traversing lists"

2 years agoMerge tag 'staging-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 15 Aug 2021 05:16:30 +0000 (19:16 -1000)]
Merge tag 'staging-5.14-rc6' of git://git./linux/kernel/git/gregkh/staging

Pull IIO driver fixes from Greg KH:
 "Here are some small IIO driver fixes for reported problems for
  5.14-rc6 (no staging driver fixes at the moment).

  All of them resolve reported issues and have been in linux-next all
  week with no reported problems. Full details are in the shortlog"

* tag 'staging-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: adc: Fix incorrect exit of for-loop
  iio: humidity: hdc100x: Add margin to the conversion time
  dt-bindings: iio: st: Remove wrong items length check
  iio: accel: fxls8962af: fix i2c dependency
  iio: adis: set GPIO reset pin direction
  iio: adc: ti-ads7950: Ensure CS is deasserted after reading channels
  iio: accel: fxls8962af: fix potential use of uninitialized symbol

2 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sun, 15 Aug 2021 04:59:53 +0000 (18:59 -1000)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "One driver bugfix, a documentation bugfix, and an "uninitialized data"
  leak fix for the core"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  Documentation: i2c: add i2c-sysfs into index
  i2c: dev: zero out array used for i2c reads from userspace
  i2c: iproc: fix race between client unreg and tasklet

2 years agoio_uring: only assign io_uring_enter() SQPOLL error in actual error case
Jens Axboe [Sat, 14 Aug 2021 15:04:40 +0000 (09:04 -0600)]
io_uring: only assign io_uring_enter() SQPOLL error in actual error case

If an SQPOLL based ring is newly created and an application issues an
io_uring_enter(2) system call on it, then we can return a spurious
-EOWNERDEAD error. This happens because there's nothing to submit, and
if the caller doesn't specify any other action, the initial error
assignment of -EOWNERDEAD never gets overwritten. This causes us to
return it directly, even if it isn't valid.

Move the error assignment into the actual failure case instead.

Cc: stable@vger.kernel.org
Fixes: d9d05217cb69 ("io_uring: stop SQPOLL submit on creator's death")
Reported-by: Sherlock Holo sherlockya@gmail.com
Link: https://github.com/axboe/liburing/issues/413
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoMerge tag 'for-linus-5.14-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 14 Aug 2021 16:31:22 +0000 (06:31 -1000)]
Merge tag 'for-linus-5.14-rc6-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "A small cleanup patch and a fix of a rare race in the Xen evtchn
  driver"

* tag 'for-linus-5.14-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/events: Fix race in set_evtchn_to_irq
  xen/events: remove redundant initialization of variable irq

2 years agoMerge tag 'riscv-for-linus-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 14 Aug 2021 16:28:19 +0000 (06:28 -1000)]
Merge tag 'riscv-for-linus-5.14-rc6' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - avoid passing -mno-relax to compilers that don't support it

 - a comment fix

* tag 'riscv-for-linus-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: Fix comment regarding kernel mapping overlapping with IS_ERR_VALUE
  riscv: kexec: do not add '-mno-relax' flag if compiler doesn't support it

2 years agoMerge tag 'configfs-5.14' of git://git.infradead.org/users/hch/configfs
Linus Torvalds [Sat, 14 Aug 2021 16:22:42 +0000 (06:22 -1000)]
Merge tag 'configfs-5.14' of git://git.infradead.org/users/hch/configfs

Pull configfs fix from Christoph Hellwig:

 - fix to revert to the historic write behavior (Bart Van Assche)

* tag 'configfs-5.14' of git://git.infradead.org/users/hch/configfs:
  configfs: restore the kernel v5.13 text attribute write behavior

2 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Sat, 14 Aug 2021 01:05:23 +0000 (15:05 -1000)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "7 patches.

  Subsystems affected by this patch series: mm (kasan, mm/slub,
  mm/madvise, and memcg), and lib"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  lib: use PFN_PHYS() in devmem_is_allowed()
  mm/memcg: fix incorrect flushing of lruvec data in obj_stock
  mm/madvise: report SIGBUS as -EFAULT for MADV_POPULATE_(READ|WRITE)
  mm: slub: fix slub_debug disabling for list of slabs
  slub: fix kmalloc_pagealloc_invalid_free unit test
  kasan, slub: reset tag when printing address
  kasan, kmemleak: reset tags when scanning block

2 years agoMerge tag '5.14-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 14 Aug 2021 00:44:32 +0000 (14:44 -1000)]
Merge tag '5.14-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Four CIFS/SMB3 Fixes, all for stable, two relating to deferred close,
  and one for the 'modefromsid' mount option (when 'idsfromsid' not
  specified)"

* tag '5.14-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Call close synchronously during unlink/rename/lease break.
  cifs: Handle race conditions during rename
  cifs: use the correct max-length for dentry_path_raw()
  cifs: create sd context must be a multiple of 8

2 years agoMerge tag 'linux-kselftest-fixes-5.14-rc6' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Sat, 14 Aug 2021 00:32:38 +0000 (14:32 -1000)]
Merge tag 'linux-kselftest-fixes-5.14-rc6' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull Kselftest fix from Shuah Khan:
 "A single patch to sgx test to fix Q1 and Q2 calculation"

* tag 'linux-kselftest-fixes-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/sgx: Fix Q1 and Q2 calculation in sigstruct.c

2 years agoice: Fix perout start time rounding
Maciej Machnikowski [Fri, 13 Aug 2021 16:50:18 +0000 (09:50 -0700)]
ice: Fix perout start time rounding

Internal tests found out that the latest code doesn't bring up 1PPS out
as expected. As a result of incorrect define used to round the time up
the time was round down to the past second boundary.

Fix define used for rounding to properly round up to the next Top of
second in ice_ptp_cfg_clkout to fix it.

Fixes: 172db5f91d5f ("ice: add support for auxiliary input/output pins")
Signed-off-by: Maciej Machnikowski <maciej.machnikowski@intel.com>
Tested-by: Sunitha Mekala <sunithax.d.mekala@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20210813165018.2196013-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agolib: use PFN_PHYS() in devmem_is_allowed()
Liang Wang [Fri, 13 Aug 2021 23:54:45 +0000 (16:54 -0700)]
lib: use PFN_PHYS() in devmem_is_allowed()

The physical address may exceed 32 bits on 32-bit systems with more than
32 bits of physcial address.  Use PFN_PHYS() in devmem_is_allowed(), or
the physical address may overflow and be truncated.

We found this bug when mapping a high addresses through devmem tool,
when CONFIG_STRICT_DEVMEM is enabled on the ARM with ARM_LPAE and devmem
is used to map a high address that is not in the iomem address range, an
unexpected error indicating no permission is returned.

This bug was initially introduced from v2.6.37, and the function was
moved to lib in v5.11.

Link: https://lkml.kernel.org/r/20210731025057.78825-1-wangliang101@huawei.com
Fixes: 087aaffcdf9c ("ARM: implement CONFIG_STRICT_DEVMEM by disabling access to RAM via /dev/mem")
Fixes: 527701eda5f1 ("lib: Add a generic version of devmem_is_allowed()")
Signed-off-by: Liang Wang <wangliang101@huawei.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Liang Wang <wangliang101@huawei.com>
Cc: Xiaoming Ni <nixiaoming@huawei.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: <stable@vger.kernel.org> [2.6.37+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomm/memcg: fix incorrect flushing of lruvec data in obj_stock
Waiman Long [Fri, 13 Aug 2021 23:54:41 +0000 (16:54 -0700)]
mm/memcg: fix incorrect flushing of lruvec data in obj_stock

When mod_objcg_state() is called with a pgdat that is different from
that in the obj_stock, the old lruvec data cached in obj_stock are
flushed out.  Unfortunately, they were flushed to the new pgdat and so
the data go to the wrong node.  This will screw up the slab data
reported in /sys/devices/system/node/node*/meminfo.

Fix that by flushing the data to the cached pgdat instead.

Link: https://lkml.kernel.org/r/20210802143834.30578-1-longman@redhat.com
Fixes: 68ac5b3c8db2 ("mm/memcg: cache vmstat data in percpu memcg_stock_pcp")
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Chris Down <chris@chrisdown.name>
Cc: Yafang Shao <laoar.shao@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Masayoshi Mizuma <msys.mizuma@gmail.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomm/madvise: report SIGBUS as -EFAULT for MADV_POPULATE_(READ|WRITE)
David Hildenbrand [Fri, 13 Aug 2021 23:54:37 +0000 (16:54 -0700)]
mm/madvise: report SIGBUS as -EFAULT for MADV_POPULATE_(READ|WRITE)

Doing some extended tests and polishing the man page update for
MADV_POPULATE_(READ|WRITE), I realized that we end up converting also
SIGBUS (via -EFAULT) to -EINVAL, making it look like yet another
madvise() user error.

We want to report only problematic mappings and permission problems that
the user could have know as -EINVAL.

Let's not convert -EFAULT arising due to SIGBUS (or SIGSEGV) to -EINVAL,
but instead indicate -EFAULT to user space.  While we could also convert
it to -ENOMEM, using -EFAULT looks more helpful when user space might
want to troubleshoot what's going wrong: MADV_POPULATE_(READ|WRITE) is
not part of an final Linux release and we can still adjust the behavior.

Link: https://lkml.kernel.org/r/20210726154932.102880-1-david@redhat.com
Fixes: 4ca9b3859dac ("mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault page tables")
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomm: slub: fix slub_debug disabling for list of slabs
Vlastimil Babka [Fri, 13 Aug 2021 23:54:34 +0000 (16:54 -0700)]
mm: slub: fix slub_debug disabling for list of slabs

Vijayanand Jitta reports:

  Consider the scenario where CONFIG_SLUB_DEBUG_ON is set and we would
  want to disable slub_debug for few slabs. Using boot parameter with
  slub_debug=-,slab_name syntax doesn't work as expected i.e; only
  disabling debugging for the specified list of slabs. Instead it
  disables debugging for all slabs, which is wrong.

This patch fixes it by delaying the moment when the global slub_debug
flags variable is updated.  In case a "slub_debug=-,slab_name" has been
passed, the global flags remain as initialized (depending on
CONFIG_SLUB_DEBUG_ON enabled or disabled) and are not simply reset to 0.

Link: https://lkml.kernel.org/r/8a3d992a-473a-467b-28a0-4ad2ff60ab82@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reported-by: Vijayanand Jitta <vjitta@codeaurora.org>
Reviewed-by: Vijayanand Jitta <vjitta@codeaurora.org>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoslub: fix kmalloc_pagealloc_invalid_free unit test
Shakeel Butt [Fri, 13 Aug 2021 23:54:31 +0000 (16:54 -0700)]
slub: fix kmalloc_pagealloc_invalid_free unit test

The unit test kmalloc_pagealloc_invalid_free makes sure that for the
higher order slub allocation which goes to page allocator, the free is
called with the correct address i.e.  the virtual address of the head
page.

Commit f227f0faf63b ("slub: fix unreclaimable slab stat for bulk free")
unified the free code paths for page allocator based slub allocations
but instead of using the address passed by the caller, it extracted the
address from the page.  Thus making the unit test
kmalloc_pagealloc_invalid_free moot.  So, fix this by using the address
passed by the caller.

Should we fix this? I think yes because dev expect kasan to catch these
type of programming bugs.

Link: https://lkml.kernel.org/r/20210802180819.1110165-1-shakeelb@google.com
Fixes: f227f0faf63b ("slub: fix unreclaimable slab stat for bulk free")
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Reported-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Roman Gushchin <guro@fb.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agokasan, slub: reset tag when printing address
Kuan-Ying Lee [Fri, 13 Aug 2021 23:54:27 +0000 (16:54 -0700)]
kasan, slub: reset tag when printing address

The address still includes the tags when it is printed.  With hardware
tag-based kasan enabled, we will get a false positive KASAN issue when
we access metadata.

Reset the tag before we access the metadata.

Link: https://lkml.kernel.org/r/20210804090957.12393-3-Kuan-Ying.Lee@mediatek.com
Fixes: aa1ef4d7b3f6 ("kasan, mm: reset tags when accessing metadata")
Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chinwen Chang <chinwen.chang@mediatek.com>
Cc: Nicholas Tang <nicholas.tang@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agokasan, kmemleak: reset tags when scanning block
Kuan-Ying Lee [Fri, 13 Aug 2021 23:54:24 +0000 (16:54 -0700)]
kasan, kmemleak: reset tags when scanning block

Patch series "kasan, slub: reset tag when printing address", v3.

With hardware tag-based kasan enabled, we reset the tag when we access
metadata to avoid from false alarm.

This patch (of 2):

Kmemleak needs to scan kernel memory to check memory leak.  With hardware
tag-based kasan enabled, when it scans on the invalid slab and
dereference, the issue will occur as below.

Hardware tag-based KASAN doesn't use compiler instrumentation, we can not
use kasan_disable_current() to ignore tag check.

Based on the below report, there are 11 0xf7 granules, which amounts to
176 bytes, and the object is allocated from the kmalloc-256 cache.  So
when kmemleak accesses the last 256-176 bytes, it causes faults, as those
are marked with KASAN_KMALLOC_REDZONE == KASAN_TAG_INVALID == 0xfe.

Thus, we reset tags before accessing metadata to avoid from false positives.

  BUG: KASAN: out-of-bounds in scan_block+0x58/0x170
  Read at addr f7ff0000c0074eb0 by task kmemleak/138
  Pointer tag: [f7], memory tag: [fe]

  CPU: 7 PID: 138 Comm: kmemleak Not tainted 5.14.0-rc2-00001-g8cae8cd89f05-dirty #134
  Hardware name: linux,dummy-virt (DT)
  Call trace:
   dump_backtrace+0x0/0x1b0
   show_stack+0x1c/0x30
   dump_stack_lvl+0x68/0x84
   print_address_description+0x7c/0x2b4
   kasan_report+0x138/0x38c
   __do_kernel_fault+0x190/0x1c4
   do_tag_check_fault+0x78/0x90
   do_mem_abort+0x44/0xb4
   el1_abort+0x40/0x60
   el1h_64_sync_handler+0xb4/0xd0
   el1h_64_sync+0x78/0x7c
   scan_block+0x58/0x170
   scan_gray_list+0xdc/0x1a0
   kmemleak_scan+0x2ac/0x560
   kmemleak_scan_thread+0xb0/0xe0
   kthread+0x154/0x160
   ret_from_fork+0x10/0x18

  Allocated by task 0:
   kasan_save_stack+0x2c/0x60
   __kasan_kmalloc+0xec/0x104
   __kmalloc+0x224/0x3c4
   __register_sysctl_paths+0x200/0x290
   register_sysctl_table+0x2c/0x40
   sysctl_init+0x20/0x34
   proc_sys_init+0x3c/0x48
   proc_root_init+0x80/0x9c
   start_kernel+0x648/0x6a4
   __primary_switched+0xc0/0xc8

  Freed by task 0:
   kasan_save_stack+0x2c/0x60
   kasan_set_track+0x2c/0x40
   kasan_set_free_info+0x44/0x54
   ____kasan_slab_free.constprop.0+0x150/0x1b0
   __kasan_slab_free+0x14/0x20
   slab_free_freelist_hook+0xa4/0x1fc
   kfree+0x1e8/0x30c
   put_fs_context+0x124/0x220
   vfs_kern_mount.part.0+0x60/0xd4
   kern_mount+0x24/0x4c
   bdev_cache_init+0x70/0x9c
   vfs_caches_init+0xdc/0xf4
   start_kernel+0x638/0x6a4
   __primary_switched+0xc0/0xc8

  The buggy address belongs to the object at ffff0000c0074e00
   which belongs to the cache kmalloc-256 of size 256
  The buggy address is located 176 bytes inside of
   256-byte region [ffff0000c0074e00ffff0000c0074f00)
  The buggy address belongs to the page:
  page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100074
  head:(____ptrval____) order:2 compound_mapcount:0 compound_pincount:0
  flags: 0xbfffc0000010200(slab|head|node=0|zone=2|lastcpupid=0xffff|kasantag=0x0)
  raw: 0bfffc0000010200 0000000000000000 dead000000000122 f5ff0000c0002300
  raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
  page dumped because: kasan: bad access detected

  Memory state around the buggy address:
   ffff0000c0074c00: f0 f0 f0 f0 f0 f0 f0 f0 f0 fe fe fe fe fe fe fe
   ffff0000c0074d00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
  >ffff0000c0074e00: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 fe fe fe fe fe
                                                      ^
   ffff0000c0074f00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
   ffff0000c0075000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
  ==================================================================
  Disabling lock debugging due to kernel taint
  kmemleak: 181 new suspected memory leaks (see /sys/kernel/debug/kmemleak)

Link: https://lkml.kernel.org/r/20210804090957.12393-1-Kuan-Ying.Lee@mediatek.com
Link: https://lkml.kernel.org/r/20210804090957.12393-2-Kuan-Ying.Lee@mediatek.com
Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Marco Elver <elver@google.com>
Cc: Nicholas Tang <nicholas.tang@mediatek.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Chinwen Chang <chinwen.chang@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoMerge tag 'block-5.14-2021-08-13' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 13 Aug 2021 23:36:42 +0000 (13:36 -1000)]
Merge tag 'block-5.14-2021-08-13' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A few fixes for block that should go into 5.14:

   - Revert the mq-deadline cgroup addition. More work is needed on this
     front, let's revert it for now and get it right before having it in
     a released kernel (Tejun)

   - blk-iocost lockdep fix (Ming)

   - nbd double completion fix (Xie)

   - Fix for non-idling when clearing the shared tag flag (Yu)"

* tag 'block-5.14-2021-08-13' of git://git.kernel.dk/linux-block:
  nbd: Aovid double completion of a request
  blk-mq: clear active_queues before clearing BLK_MQ_F_TAG_QUEUE_SHARED
  Revert "block/mq-deadline: Add cgroup support"
  blk-iocost: fix lockdep warning on blkcg->lock

2 years agoMerge tag 'io_uring-5.14-2021-08-13' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 13 Aug 2021 23:25:08 +0000 (13:25 -1000)]
Merge tag 'io_uring-5.14-2021-08-13' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A bit bigger than the previous weeks, but mostly just a few stable
  bound fixes. In detail:

   - Followup fixes to patches from last week for io-wq, turns out they
     weren't complete (Hao)

   - Two lockdep reported fixes out of the RT camp (me)

   - Sync the io_uring-cp example with liburing, as a few bug fixes
     never made it to the kernel carried version (me)

   - SQPOLL related TIF_NOTIFY_SIGNAL fix (Nadav)

   - Use WRITE_ONCE() when writing sq flags (Nadav)

   - io_rsrc_put_work() deadlock fix (Pavel)"

* tag 'io_uring-5.14-2021-08-13' of git://git.kernel.dk/linux-block:
  tools/io_uring/io_uring-cp: sync with liburing example
  io_uring: fix ctx-exit io_rsrc_put_work() deadlock
  io_uring: drop ctx->uring_lock before flushing work item
  io-wq: fix IO_WORKER_F_FIXED issue in create_io_worker()
  io-wq: fix bug of creating io-wokers unconditionally
  io_uring: rsrc ref lock needs to be IRQ safe
  io_uring: Use WRITE_ONCE() when writing to sq_flags
  io_uring: clear TIF_NOTIFY_SIGNAL when running task work

2 years agoMerge tag 'pinctrl-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Fri, 13 Aug 2021 22:41:45 +0000 (12:41 -1000)]
Merge tag 'pinctrl-v5.14-2' of git://git./linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "An assortment of pin control fixes of varying importance, the most
  important ones affecting Intel and AMD laptops turned up the recent
  few days so it's time to push this to your tree.

   - Fix the Kconfig dependency for Qualcomm SM8350 pin controller

   - Fix pin biasing fallback behaviour on the Mediatek pin controller

   - Fix the GPIO numbering scheme for Intel Tiger Lake-H to correspond
     to the products that are now actually out on the market

   - Fix a pin control function itemization in the Sunxi driver
     out-of-bounds access bug

   - Fix disable clocking for the RISC-V K210 pin controller on the
     errorpath

   - Fix a system shutdown bug affecting AMD Ryzen-based laptops, the
     system would not suspend but just bounce back up"

* tag 'pinctrl-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: amd: Fix an issue with shutdown when system set to s0ix
  pinctrl: k210: Fix k210_fpioa_probe()
  pinctrl: sunxi: Don't underestimate number of functions
  pinctrl: tigerlake: Fix GPIO mapping for newer version of software
  pinctrl: mediatek: Fix fallback behavior for bias_set_combo
  pinctrl: qcom: fix GPIOLIB dependencies

2 years agosoc: fsl: qe: fix static checker warning
Maxim Kochetkov [Wed, 11 Aug 2021 07:10:36 +0000 (10:10 +0300)]
soc: fsl: qe: fix static checker warning

The patch be7ecbd240b2: "soc: fsl: qe: convert QE interrupt
controller to platform_device" from Aug 3, 2021, leads to the
following static checker warning:

drivers/soc/fsl/qe/qe_ic.c:438 qe_ic_init()
warn: unsigned 'qe_ic->virq_low' is never less than zero.

In old variant irq_of_parse_and_map() returns zero if failed so
unsigned int for virq_high/virq_low was ok.
In new variant platform_get_irq() returns negative error codes
if failed so we need to use int for virq_high/virq_low.

Also simplify high_handler checking and remove the curly braces
to make checkpatch happy.

Fixes: be7ecbd240b2 ("soc: fsl: qe: convert QE interrupt controller to platform_device")
Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
2 years agoMerge branch 'bnxt-tx-napi-disabling-resiliency-improvements'
Jakub Kicinski [Fri, 13 Aug 2021 17:26:20 +0000 (10:26 -0700)]
Merge branch 'bnxt-tx-napi-disabling-resiliency-improvements'

Jakub Kicinski says:

====================
bnxt: Tx NAPI disabling resiliency improvements

A lockdep warning was triggered by netpoll because napi poll
was taking the xmit lock. Fix that and a couple more issues
noticed while reading the code.
====================

Link: https://lore.kernel.org/r/20210812214242.578039-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agobnxt: count Tx drops
Jakub Kicinski [Thu, 12 Aug 2021 21:42:42 +0000 (14:42 -0700)]
bnxt: count Tx drops

Drivers should count packets they are dropping.

Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.")
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agobnxt: make sure xmit_more + errors does not miss doorbells
Jakub Kicinski [Thu, 12 Aug 2021 21:42:41 +0000 (14:42 -0700)]
bnxt: make sure xmit_more + errors does not miss doorbells

skbs are freed on error and not put on the ring. We may, however,
be in a situation where we're freeing the last skb of a batch,
and there is a doorbell ring pending because of xmit_more() being
true earlier. Make sure we ring the door bell in such situations.

Since errors are rare don't pay attention to xmit_more() and just
always flush the pending frames.

The busy case should be safe to be left alone because it can
only happen if start_xmit races with completions and they
both enable the queue. In that case the kick can't be pending.

Noticed while reading the code.

Fixes: 4d172f21cefe ("bnxt_en: Implement xmit_more.")
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agobnxt: disable napi before canceling DIM
Jakub Kicinski [Thu, 12 Aug 2021 21:42:40 +0000 (14:42 -0700)]
bnxt: disable napi before canceling DIM

napi schedules DIM, napi has to be disabled first,
then DIM canceled.

Noticed while reading the code.

Fixes: 0bc0b97fca73 ("bnxt_en: cleanup DIM work on device shutdown")
Fixes: 6a8788f25625 ("bnxt_en: add support for software dynamic interrupt moderation")
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agobnxt: don't lock the tx queue from napi poll
Jakub Kicinski [Thu, 12 Aug 2021 21:42:39 +0000 (14:42 -0700)]
bnxt: don't lock the tx queue from napi poll

We can't take the tx lock from the napi poll routine, because
netpoll can poll napi at any moment, including with the tx lock
already held.

The tx lock is protecting against two paths - the disable
path, and (as Michael points out) the NETDEV_TX_BUSY case
which may occur if NAPI completions race with start_xmit
and both decide to re-enable the queue.

For the disable/ifdown path use synchronize_net() to make sure
closing the device does not race we restarting the queues.
Annotate accesses to dev_state against data races.

For the NAPI cleanup vs start_xmit path - appropriate barriers
are already in place in the main spot where Tx queue is stopped
but we need to do the same careful dance in the TX_BUSY case.

Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.")
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>