139368 Commits

Author SHA1 Message Date
Lu Baolu
4140d77a02 iommu/vt-d: Fix RID2PASID setup/teardown failure
The IOMMU driver shares the pasid table for PCI alias devices. When the
RID2PASID entry of the shared pasid table has been filled by the first
device, the subsequent device will encounter the "DMAR: Setup RID2PASID
failed" failure as the pasid entry has already been marked as present.
As the result, the IOMMU probing process will be aborted.

On the contrary, when any alias device is hot-removed from the system,
for example, by writing to /sys/bus/pci/devices/.../remove, the shared
RID2PASID will be cleared without any notifications to other devices.
As the result, any DMAs from those rest devices are blocked.

Sharing pasid table among PCI alias devices could save two memory pages
for devices underneath the PCIe-to-PCI bridges. Anyway, considering that
those devices are rare on modern platforms that support VT-d in scalable
mode and the saved memory is negligible, it's reasonable to remove this
part of immature code to make the driver feasible and stable.

Fixes: ef848b7e5a6a0 ("iommu/vt-d: Setup pasid entry for RID2PASID support")
Reported-by: Chenyi Qiang <chenyi.qiang@intel.com>
Reported-by: Ethan Zhao <haifeng.zhao@linux.intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Ethan Zhao <haifeng.zhao@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220623065720.727849-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20220625133430.2200315-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2022-07-06 12:59:21 +02:00
Linus Torvalds
b8d5109f50 lockref: remove unused 'lockref_get_or_lock()' function
Looking at the conditional lock acquire functions in the kernel due to
the new sparse support (see commit 4a557a5d1a61 "sparse: introduce
conditional lock acquire function attribute"), it became obvious that
the lockref code has a couple of them, but they don't match the usual
naming convention for the other ones, and their return value logic is
also reversed.

In the other very similar places, the naming pattern is '*_and_lock()'
(eg 'atomic_put_and_lock()' and 'refcount_dec_and_lock()'), and the
function returns true when the lock is taken.

The lockref code is superficially very similar to the refcount code,
only with the special "atomic wrt the embedded lock" semantics.  But
instead of the '*_and_lock()' naming it uses '*_or_lock()'.

And instead of returning true in case it took the lock, it returns true
if it *didn't* take the lock.

Now, arguably the reflock code is quite logical: it really is a "either
decrement _or_ lock" kind of situation - and the return value is about
whether the operation succeeded without any special care needed.

So despite the similarities, the differences do make some sense, and
maybe it's not worth trying to unify the different conditional locking
primitives in this area.

But while looking at this all, it did become obvious that the
'lockref_get_or_lock()' function hasn't actually had any users for
almost a decade.

The only user it ever had was the shortlived 'd_rcu_to_refcount()'
function, and it got removed and replaced with 'lockref_get_not_dead()'
back in 2013 in commits 0d98439ea3c6 ("vfs: use lockred 'dead' flag to
mark unrecoverably dead dentries") and e5c832d55588 ("vfs: fix dentry
RCU to refcounting possibly sleeping dput()")

In fact, that single use was removed less than a week after the whole
function was introduced in commit b3abd80250c1 ("lockref: add
'lockref_get_or_lock() helper") so this function has been around for a
decade, but only had a user for six days.

Let's just put this mis-designed and unused function out of its misery.

We can think about the naming and semantic oddities of the remaining
'lockref_put_or_lock()' later, but at least that function has users.

And while the naming is different and the return value doesn't match,
that function matches the whole '{atomic,refcount}_dec_and_test()'
pattern much better (ie the magic happens when the count goes down to
zero, not when it is incremented from zero).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-07-03 14:40:28 -07:00
Linus Torvalds
4a557a5d1a sparse: introduce conditional lock acquire function attribute
The kernel tends to try to avoid conditional locking semantics because
it makes it harder to think about and statically check locking rules,
but we do have a few fundamental locking primitives that take locks
conditionally - most obviously the 'trylock' functions.

That has always been a problem for 'sparse' checking for locking
imbalance, and we've had a special '__cond_lock()' macro that we've used
to let sparse know how the locking works:

    # define __cond_lock(x,c)        ((c) ? ({ __acquire(x); 1; }) : 0)

so that you can then use this to tell sparse that (for example) the
spinlock trylock macro ends up acquiring the lock when it succeeds, but
not when it fails:

    #define raw_spin_trylock(lock)  __cond_lock(lock, _raw_spin_trylock(lock))

and then sparse can follow along the locking rules when you have code like

        if (!spin_trylock(&dentry->d_lock))
                return LRU_SKIP;
	.. sparse sees that the lock is held here..
        spin_unlock(&dentry->d_lock);

and sparse ends up happy about the lock contexts.

However, this '__cond_lock()' use does result in very ugly header files,
and requires you to basically wrap the real function with that macro
that uses '__cond_lock'.  Which has made PeterZ NAK things that try to
fix sparse warnings over the years [1].

To solve this, there is now a very experimental patch to sparse that
basically does the exact same thing as '__cond_lock()' did, but using a
function attribute instead.  That seems to make PeterZ happy [2].

Note that this does not replace existing use of '__cond_lock()', but
only exposes the new proposed attribute and uses it for the previously
unannotated 'refcount_dec_and_lock()' family of functions.

For existing sparse installations, this will make no difference (a
negative output context was ignored), but if you have the experimental
sparse patch it will make sparse now understand code that uses those
functions, the same way '__cond_lock()' makes sparse understand the very
similar 'atomic_dec_and_lock()' uses that have the old '__cond_lock()'
annotations.

Note that in some cases this will silence existing context imbalance
warnings.  But in other cases it may end up exposing new sparse warnings
for code that sparse just didn't see the locking for at all before.

This is a trial, in other words.  I'd expect that if it ends up being
successful, and new sparse releases end up having this new attribute,
we'll migrate the old-style '__cond_lock()' users to use the new-style
'__cond_acquires' function attribute.

The actual experimental sparse patch was posted in [3].

Link: https://lore.kernel.org/all/20130930134434.GC12926@twins.programming.kicks-ass.net/ [1]
Link: https://lore.kernel.org/all/Yr60tWxN4P568x3W@worktop.programming.kicks-ass.net/ [2]
Link: https://lore.kernel.org/all/CAHk-=wjZfO9hGqJ2_hGQG3U_XzSh9_XaXze=HgPdvJbgrvASfA@mail.gmail.com/ [3]
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Alexander Aring <aahringo@redhat.com>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-07-03 11:32:22 -07:00
Linus Torvalds
9ee7827668 Power management fixes for 5.19-rc5
- Fix error code path issues related PROBE_DEFER handling in
    devfreq (Christian Marangi).
 
  - Revert an editing accident in SPDX-License line in the devfreq
    passive governor (Lukas Bulwahn).
 
  - Fix refcount leak in of_get_devfreq_events() in the exynos-ppmu
    devfreq driver (Miaoqian Lin).
 
  - Use HZ_PER_KHZ macro in the passive devfreq governor (Yicong Yang).
 
  - Fix missing of_node_put for qoriq and pmac32 driver (Liang He).
 
  - Fix issues around throttle interrupt for qcom driver (Stephen Boyd).
 
  - Add MT8186 to cpufreq-dt-platdev blocklist (AngeloGioacchino Del
    Regno).
 
  - Make amd-pstate enable CPPC on resume from S3 (Jinzhou Su).
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Merge tag 'pm-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix some issues in cpufreq drivers and some issues in devfreq:

   - Fix error code path issues related PROBE_DEFER handling in devfreq
     (Christian Marangi)

   - Revert an editing accident in SPDX-License line in the devfreq
     passive governor (Lukas Bulwahn)

   - Fix refcount leak in of_get_devfreq_events() in the exynos-ppmu
     devfreq driver (Miaoqian Lin)

   - Use HZ_PER_KHZ macro in the passive devfreq governor (Yicong Yang)

   - Fix missing of_node_put for qoriq and pmac32 driver (Liang He)

   - Fix issues around throttle interrupt for qcom driver (Stephen Boyd)

   - Add MT8186 to cpufreq-dt-platdev blocklist (AngeloGioacchino Del
     Regno)

   - Make amd-pstate enable CPPC on resume from S3 (Jinzhou Su)"

* tag 'pm-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / devfreq: passive: revert an editing accident in SPDX-License line
  PM / devfreq: Fix kernel warning with cpufreq passive register fail
  PM / devfreq: Rework freq_table to be local to devfreq struct
  PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events
  PM / devfreq: passive: Use HZ_PER_KHZ macro in units.h
  PM / devfreq: Fix cpufreq passive unregister erroring on PROBE_DEFER
  PM / devfreq: Mute warning on governor PROBE_DEFER
  PM / devfreq: Fix kernel panic with cpu based scaling to passive gov
  cpufreq: Add MT8186 to cpufreq-dt-platdev blocklist
  cpufreq: pmac32-cpufreq: Fix refcount leak bug
  cpufreq: qcom-hw: Don't do lmh things without a throttle interrupt
  drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c
  cpufreq: amd-pstate: Add resume and suspend callbacks
2022-07-01 12:55:28 -07:00
Linus Torvalds
0a35d1622d io_uring-5.19-2022-07-01
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Merge tag 'io_uring-5.19-2022-07-01' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Two minor tweaks:

   - While we still can, adjust the send/recv based flags to be in
     ->ioprio rather than in ->addr2. This is consistent with eg accept,
     and also doesn't waste a full 64-bit field for flags (Pavel)

   - 5.18-stable fix for re-importing provided buffers. Not much real
     world relevance here as it'll only impact non-pollable files gone
     async, which is more of a practical test case rather than something
     that is used in the wild (Dylan)"

* tag 'io_uring-5.19-2022-07-01' of git://git.kernel.dk/linux-block:
  io_uring: fix provided buffer import
  io_uring: keep sendrecv flags in ioprio
2022-07-01 10:52:01 -07:00
Linus Torvalds
a175eca0f3 drm fixes for 5.19-rc5
fbdev:
 - sysfb fixes/conflicting fb fixes.
 
 amdgpu:
 - GPU recovery fix
 - Fix integer type usage in fourcc header for AMD modifiers
 - KFD TLB flush fix for gfx9 APUs
 - Display fix
 
 i915:
 - Fix ioctl argument error return
 - Fix d3cold disable to allow PCI upstream bridge D3 transition
 - Fix setting cache_dirty for dma-buf objects on discrete
 
 msm:
 - Fix to increment vsync_cnt before calling drm_crtc_handle_vblank so that
   userspace sees the value *after* it is incremented if waiting for vblank
   events
 - Fix to reset drm_dev to NULL in dp_display_unbind to avoid a crash in
   probe/bind error paths
 - Fix to resolve the smatch error of de-referencing before NULL check in
   dpu_encoder_phys_wb.c
 - Fix error return to userspace if fence-id allocation fails in submit
   ioctl
 
 vc4:
 - NULL ptr dereference fix
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Merge tag 'drm-fixes-2022-07-01' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Bit quieter this week, the main thing is it pulls in the fixes for the
  sysfb resource issue you were seeing. these had been queued for next
  so should have had some decent testing.

  Otherwise amdgpu, i915 and msm each have a few fixes, and vc4 has one.

  fbdev:
   - sysfb fixes/conflicting fb fixes

  amdgpu:
   - GPU recovery fix

   - Fix integer type usage in fourcc header for AMD modifiers

   - KFD TLB flush fix for gfx9 APUs

   - Display fix

  i915:
   - Fix ioctl argument error return

   - Fix d3cold disable to allow PCI upstream bridge D3 transition

   - Fix setting cache_dirty for dma-buf objects on discrete

  msm:
   - Fix to increment vsync_cnt before calling drm_crtc_handle_vblank so
     that userspace sees the value *after* it is incremented if waiting
     for vblank events

   - Fix to reset drm_dev to NULL in dp_display_unbind to avoid a crash
     in probe/bind error paths

   - Fix to resolve the smatch error of de-referencing before NULL check
     in dpu_encoder_phys_wb.c

   - Fix error return to userspace if fence-id allocation fails in
     submit ioctl

  vc4:
   - NULL ptr dereference fix"

* tag 'drm-fixes-2022-07-01' of git://anongit.freedesktop.org/drm/drm:
  Revert "drm/amdgpu/display: set vblank_disable_immediate for DC"
  drm/amdgpu: To flush tlb for MMHUB of RAVEN series
  drm/fourcc: fix integer type usage in uapi header
  drm/amdgpu: fix adev variable used in amdgpu_device_gpu_recover()
  fbdev: Disable sysfb device registration when removing conflicting FBs
  firmware: sysfb: Add sysfb_disable() helper function
  firmware: sysfb: Make sysfb_create_simplefb() return a pdev pointer
  drm/msm/gem: Fix error return on fence id alloc fail
  drm/i915: tweak the ordering in cpu_write_needs_clflush
  drm/i915/dgfx: Disable d3cold at gfx root port
  drm/i915/gem: add missing else
  drm/vc4: perfmon: Fix variable dereferenced before check
  drm/msm/dpu: Fix variable dereferenced before check
  drm/msm/dp: reset drm_dev to NULL at dp_display_unbind()
  drm/msm/dpu: Increment vsync_cnt before waking up userspace
2022-06-30 17:19:19 -07:00
Dave Airlie
b8f0009bc9 A NULL pointer dereference fix for vc4, and 3 patches to improve the
sysfb device behaviour when removing conflicting framebuffers
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Merge tag 'drm-misc-fixes-2022-06-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

A NULL pointer dereference fix for vc4, and 3 patches to improve the
sysfb device behaviour when removing conflicting framebuffers

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220630072404.2fa4z3nk5h5q34ci@houat
2022-07-01 09:27:55 +10:00
Linus Torvalds
5e8379351d Including fixes from netfilter.
Current release - new code bugs:
 
  - clear msg_get_inq in __sys_recvfrom() and __copy_msghdr_from_user()
 
  - mptcp:
    - invoke MP_FAIL response only when needed
    - fix shutdown vs fallback race
    - consistent map handling on failure
 
  - octeon_ep: use bitwise AND
 
 Previous releases - regressions:
 
  - tipc: move bc link creation back to tipc_node_create, fix NPD
 
 Previous releases - always broken:
 
  - tcp: add a missing nf_reset_ct() in 3WHS handling, prevent socket
    buffered skbs from keeping refcount on the conntrack module
 
  - ipv6: take care of disable_policy when restoring routes
 
  - tun: make sure to always disable and unlink NAPI instances
 
  - phy: don't trigger state machine while in suspend
 
  - netfilter: nf_tables: avoid skb access on nf_stolen
 
  - asix: fix "can't send until first packet is send" issue
 
  - usb: asix: do not force pause frames support
 
  - nxp-nci: don't issue a zero length i2c_master_read()
 
 Misc:
 
  - ncsi: allow use of proper "mellanox" DT vendor prefix
 
  - act_api: add a message for user space if any actions were already
    flushed before the error was hit
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter.

  Current release - new code bugs:

   - clear msg_get_inq in __sys_recvfrom() and __copy_msghdr_from_user()

   - mptcp:
      - invoke MP_FAIL response only when needed
      - fix shutdown vs fallback race
      - consistent map handling on failure

   - octeon_ep: use bitwise AND

  Previous releases - regressions:

   - tipc: move bc link creation back to tipc_node_create, fix NPD

  Previous releases - always broken:

   - tcp: add a missing nf_reset_ct() in 3WHS handling to prevent socket
     buffered skbs from keeping refcount on the conntrack module

   - ipv6: take care of disable_policy when restoring routes

   - tun: make sure to always disable and unlink NAPI instances

   - phy: don't trigger state machine while in suspend

   - netfilter: nf_tables: avoid skb access on nf_stolen

   - asix: fix "can't send until first packet is send" issue

   - usb: asix: do not force pause frames support

   - nxp-nci: don't issue a zero length i2c_master_read()

  Misc:

   - ncsi: allow use of proper "mellanox" DT vendor prefix

   - act_api: add a message for user space if any actions were already
     flushed before the error was hit"

* tag 'net-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits)
  net: dsa: felix: fix race between reading PSFP stats and port stats
  selftest: tun: add test for NAPI dismantle
  net: tun: avoid disabling NAPI twice
  net: sparx5: mdb add/del handle non-sparx5 devices
  net: sfp: fix memory leak in sfp_probe()
  mlxsw: spectrum_router: Fix rollback in tunnel next hop init
  net: rose: fix UAF bugs caused by timer handler
  net: usb: ax88179_178a: Fix packet receiving
  net: bonding: fix use-after-free after 802.3ad slave unbind
  ipv6: fix lockdep splat in in6_dump_addrs()
  net: phy: ax88772a: fix lost pause advertisement configuration
  net: phy: Don't trigger state machine while in suspend
  usbnet: fix memory allocation in helpers
  selftests net: fix kselftest net fatal error
  NFC: nxp-nci: don't print header length mismatch on i2c error
  NFC: nxp-nci: Don't issue a zero length i2c_master_read()
  net: tipc: fix possible refcount leak in tipc_sk_create()
  nfc: nfcmrvl: Fix irq_of_parse_and_map() return value
  net: ipv6: unexport __init-annotated seg6_hmac_net_init()
  ipv6/sit: fix ipip6_tunnel_get_prl return value
  ...
2022-06-30 15:26:55 -07:00
Linus Torvalds
1a0e93df1e First v5.19 rc pull request
Three minor bug fixes:
 
 - qedr not setting the QP timeout properly toward userspace
 
 - Memory leak on error path in ib_cm
 
 - Divide by 0 in RDMA interrupt moderation
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "Three minor bug fixes:

   - qedr not setting the QP timeout properly toward userspace

   - Memory leak on error path in ib_cm

   - Divide by 0 in RDMA interrupt moderation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  linux/dim: Fix divide by 0 in RDMA DIM
  RDMA/cm: Fix memory leak in ib_cm_insert_listen
  RDMA/qedr: Fix reporting QP timeout attribute
2022-06-30 10:03:22 -07:00
Linus Torvalds
9fb3bb25d1 Merge tag 'fsnotify_for_v5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fanotify fix from Jan Kara:
 "A fix for recently added fanotify API to have stricter checks and
  refuse some invalid flag combinations to make our life easier in the
  future"

* tag 'fsnotify_for_v5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fanotify: refine the validation checks on non-dir inode mask
2022-06-30 09:57:18 -07:00
Pavel Begunkov
29c1ac230e io_uring: keep sendrecv flags in ioprio
We waste a u64 SQE field for flags even though we don't need as many
bits and it can be used for something more useful later. Store io_uring
specific send/recv flags in sqe->ioprio instead of ->addr2.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Fixes: 0455d4ccec54 ("io_uring: add POLL_FIRST support for send/sendmsg and recv/recvmsg")
[axboe: change comment in io_uring.h as well]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-06-30 07:15:50 -06:00
Lukas Wunner
1758bde2e4 net: phy: Don't trigger state machine while in suspend
Upon system sleep, mdio_bus_phy_suspend() stops the phy_state_machine(),
but subsequent interrupts may retrigger it:

They may have been left enabled to facilitate wakeup and are not
quiesced until the ->suspend_noirq() phase.  Unwanted interrupts may
hence occur between mdio_bus_phy_suspend() and dpm_suspend_noirq(),
as well as between dpm_resume_noirq() and mdio_bus_phy_resume().

Retriggering the phy_state_machine() through an interrupt is not only
undesirable for the reason given in mdio_bus_phy_suspend() (freezing it
midway with phydev->lock held), but also because the PHY may be
inaccessible after it's suspended:  Accesses to USB-attached PHYs are
blocked once usb_suspend_both() clears the can_submit flag and PHYs on
PCI network cards may become inaccessible upon suspend as well.

Amend phy_interrupt() to avoid triggering the state machine if the PHY
is suspended.  Signal wakeup instead if the attached net_device or its
parent has been configured as a wakeup source.  (Those conditions are
identical to mdio_bus_phy_may_suspend().)  Postpone handling of the
interrupt until the PHY has resumed.

Before stopping the phy_state_machine() in mdio_bus_phy_suspend(),
wait for a concurrent phy_interrupt() to run to completion.  That is
necessary because phy_interrupt() may have checked the PHY's suspend
status before the system sleep transition commenced and it may thus
retrigger the state machine after it was stopped.

Likewise, after re-enabling interrupt handling in mdio_bus_phy_resume(),
wait for a concurrent phy_interrupt() to complete to ensure that
interrupts which it postponed are properly rerun.

The issue was exposed by commit 1ce8b37241ed ("usbnet: smsc95xx: Forward
PHY interrupts to PHY driver to avoid polling"), but has existed since
forever.

Fixes: 541cd3ee00a4 ("phylib: Fix deadlock on resume")
Link: https://lore.kernel.org/netdev/a5315a8a-32c2-962f-f696-de9a26d30091@samsung.com/
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: stable@vger.kernel.org # v2.6.33+
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/b7f386d04e9b5b0e2738f0125743e30676f309ef.1656410895.git.lukas@wunner.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-29 20:38:52 -07:00
Jakub Kicinski
236d59292e Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

1) Restore set counter when one of the CPU loses race to add elements
   to sets.

2) After NF_STOLEN, skb might be there no more, update nftables trace
   infra to avoid access to skb in this case. From Florian Westphal.

3) nftables bridge might register a prerouting hook with zero priority,
   br_netfilter incorrectly skips it. Also from Florian.

* git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: br_netfilter: do not skip all hooks with 0 priority
  netfilter: nf_tables: avoid skb access on nf_stolen
  netfilter: nft_dynset: restore set element counter when failing to update
====================

Link: https://lore.kernel.org/r/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-29 20:09:32 -07:00
Christian Marangi
b5d281f6c1 PM / devfreq: Rework freq_table to be local to devfreq struct
On a devfreq PROBE_DEFER, the freq_table in the driver profile struct,
is never reset and may be leaved in an undefined state.

This comes from the fact that we store the freq_table in the driver
profile struct that is commonly defined as static and not reset on
PROBE_DEFER.
We currently skip the reinit of the freq_table if we found
it's already defined since a driver may declare his own freq_table.

This logic is flawed in the case devfreq core generate a freq_table, set
it in the profile struct and then PROBE_DEFER, freeing the freq_table.
In this case devfreq will found a NOT NULL freq_table that has been
freed, skip the freq_table generation and probe the driver based on the
wrong table.

To fix this and correctly handle PROBE_DEFER, use a local freq_table and
max_state in the devfreq struct and never modify the freq_table present
in the profile struct if it does provide it.

Fixes: 0ec09ac2cebe ("PM / devfreq: Set the freq_table of devfreq device")
Cc: stable@vger.kernel.org
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2022-06-30 05:11:17 +09:00
Carlos Llamas
20b8264394 drm/fourcc: fix integer type usage in uapi header
Kernel uapi headers are supposed to use __[us]{8,16,32,64} types defined
by <linux/types.h> as opposed to 'uint32_t' and similar. See [1] for the
relevant discussion about this topic. In this particular case, the usage
of 'uint64_t' escaped headers_check as these macros are not being called
here. However, the following program triggers a compilation error:

  #include <drm/drm_fourcc.h>

  int main()
  {
  	unsigned long x = AMD_FMT_MOD_CLEAR(RB);
  	return 0;
  }

gcc error:
  drm.c:5:27: error: ‘uint64_t’ undeclared (first use in this function)
      5 |         unsigned long x = AMD_FMT_MOD_CLEAR(RB);
        |                           ^~~~~~~~~~~~~~~~~

This patch changes AMD_FMT_MOD_{SET,CLEAR} macros to use the correct
integer types, which fixes the above issue.

  [1] https://lkml.org/lkml/2019/6/5/18

Fixes: 8ba16d599374 ("drm/fourcc: Add AMD DRM modifiers.")
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Reviewed-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-06-29 14:50:51 -04:00
Javier Martinez Canillas
bde376e9de
firmware: sysfb: Add sysfb_disable() helper function
This can be used by subsystems to unregister a platform device registered
by sysfb and also to disable future platform device registration in sysfb.

Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220607182338.344270-3-javierm@redhat.com
2022-06-29 09:51:41 +02:00
Javier Martinez Canillas
9e121040e5
firmware: sysfb: Make sysfb_create_simplefb() return a pdev pointer
This function just returned 0 on success or an errno code on error, but it
could be useful for sysfb_init() callers to have a pointer to the device.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220607182338.344270-2-javierm@redhat.com
2022-06-29 09:51:31 +02:00
Ossama Othman
06e445f740 mptcp: fix conflict with <netinet/in.h>
Including <linux/mptcp.h> before the C library <netinet/in.h> header
causes symbol redefinition errors at compile-time due to duplicate
declarations and definitions in the <linux/in.h> header included by
<linux/mptcp.h>.

Explicitly include <netinet/in.h> before <linux/in.h> in
<linux/mptcp.h> when __KERNEL__ is not defined so that the C library
compatibility logic in <linux/libc-compat.h> is enabled when including
<linux/mptcp.h> in user space code.

Fixes: c11c5906bc0a ("mptcp: add MPTCP_SUBFLOW_ADDRS getsockopt support")
Signed-off-by: Ossama Othman <ossama.othman@intel.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-28 20:45:43 -07:00
Tao Liu
0fe3dbbefb linux/dim: Fix divide by 0 in RDMA DIM
Fix a divide 0 error in rdma_dim_stats_compare() when prev->cpe_ratio ==
0.

CallTrace:
  Hardware name: H3C R4900 G3/RS33M2C9S, BIOS 2.00.37P21 03/12/2020
  task: ffff880194b78000 task.stack: ffffc90006714000
  RIP: 0010:backport_rdma_dim+0x10e/0x240 [mlx_compat]
  RSP: 0018:ffff880c10e83ec0 EFLAGS: 00010202
  RAX: 0000000000002710 RBX: ffff88096cd7f780 RCX: 0000000000000064
  RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
  RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
  R10: 0000000000000000 R11: 0000000000000000 R12: 000000001d7c6c09
  R13: ffff88096cd7f780 R14: ffff880b174fe800 R15: 0000000000000000
  FS:  0000000000000000(0000) GS:ffff880c10e80000(0000)
  knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00000000a0965b00 CR3: 000000000200a003 CR4: 00000000007606e0
  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  PKRU: 55555554
  Call Trace:
   <IRQ>
   ib_poll_handler+0x43/0x80 [ib_core]
   irq_poll_softirq+0xae/0x110
   __do_softirq+0xd1/0x28c
   irq_exit+0xde/0xf0
   do_IRQ+0x54/0xe0
   common_interrupt+0x8f/0x8f
   </IRQ>
   ? cpuidle_enter_state+0xd9/0x2a0
   ? cpuidle_enter_state+0xc7/0x2a0
   ? do_idle+0x170/0x1d0
   ? cpu_startup_entry+0x6f/0x80
   ? start_secondary+0x1b9/0x210
   ? secondary_startup_64+0xa5/0xb0
  Code: 0f 87 e1 00 00 00 8b 4c 24 14 44 8b 43 14 89 c8 4d 63 c8 44 29 c0 99 31 d0 29 d0 31 d2 48 98 48 8d 04 80 48 8d 04 80 48 c1 e0 02 <49> f7 f1 48 83 f8 0a 0f 86 c1 00 00 00 44 39 c1 7f 10 48 89 df
  RIP: backport_rdma_dim+0x10e/0x240 [mlx_compat] RSP: ffff880c10e83ec0

Fixes: f4915455dcf0 ("linux/dim: Implement RDMA adaptive moderation (DIM)")
Link: https://lore.kernel.org/r/20220627140004.3099-1-thomas.liu@ucloud.cn
Signed-off-by: Tao Liu <thomas.liu@ucloud.cn>
Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Acked-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-06-28 10:37:25 -03:00
Amir Goldstein
8698e3bab4 fanotify: refine the validation checks on non-dir inode mask
Commit ceaf69f8eadc ("fanotify: do not allow setting dirent events in
mask of non-dir") added restrictions about setting dirent events in the
mask of a non-dir inode mark, which does not make any sense.

For backward compatibility, these restictions were added only to new
(v5.17+) APIs.

It also does not make any sense to set the flags FAN_EVENT_ON_CHILD or
FAN_ONDIR in the mask of a non-dir inode.  Add these flags to the
dir-only restriction of the new APIs as well.

Move the check of the dir-only flags for new APIs into the helper
fanotify_events_supported(), which is only called for FAN_MARK_ADD,
because there is no need to error on an attempt to remove the dir-only
flags from non-dir inode.

Fixes: ceaf69f8eadc ("fanotify: do not allow setting dirent events in mask of non-dir")
Link: https://lore.kernel.org/linux-fsdevel/20220627113224.kr2725conevh53u4@quack3.lan/
Link: https://lore.kernel.org/r/20220627174719.2838175-1-amir73il@gmail.com
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2022-06-28 11:18:13 +02:00
Linus Torvalds
941e3e7912 virtio,vdpa: fixes
Fixes all over the place, most notably we are disabling
 IRQ hardening (again!).
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "Fixes all over the place, most notably we are disabling
  IRQ hardening (again!)"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio_ring: make vring_create_virtqueue_split prettier
  vhost-vdpa: call vhost_vdpa_cleanup during the release
  virtio_mmio: Restore guest page size on resume
  virtio_mmio: Add missing PM calls to freeze/restore
  caif_virtio: fix race between virtio_device_ready() and ndo_open()
  virtio-net: fix race between ndo_open() and virtio_device_ready()
  virtio: disable notification hardening by default
  virtio: Remove unnecessary variable assignments
  virtio_ring : keep used_wrap_counter in vq->last_used_idx
  vduse: Tie vduse mgmtdev and its device
  vdpa/mlx5: Initialize CVQ vringh only once
  vdpa/mlx5: Update Control VQ callback information
2022-06-27 10:47:34 -07:00
Florian Westphal
e34b9ed96c netfilter: nf_tables: avoid skb access on nf_stolen
When verdict is NF_STOLEN, the skb might have been freed.

When tracing is enabled, this can result in a use-after-free:
1. access to skb->nf_trace
2. access to skb->mark
3. computation of trace id
4. dump of packet payload

To avoid 1, keep a cached copy of skb->nf_trace in the
trace state struct.
Refresh this copy whenever verdict is != STOLEN.

Avoid 2 by skipping skb->mark access if verdict is STOLEN.

3 is avoided by precomputing the trace id.

Only dump the packet when verdict is not "STOLEN".

Reported-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2022-06-27 19:22:54 +02:00
Linus Torvalds
1709b88739 ARM: SoC fixes for 5.19
A number of fixes have accumulated, but they are largely for
 harmless issues:
 
  - Several OF node leak fixes
 
  - A fix to the Exynos7885 UART clock description
 
  - DTS fixes to prevent boot failures on TI AM64 and J721s2
 
  - Bus probe error handling fixes for Baikal-T1
 
  - A fixup to the way STM32 SoCs use separate dts files for
    different firmware stacks
 
  - Multiple code fixes for Arm SCMI firmware, all dealing with
    robustness of the implementation
 
  - Multiple NXP i.MX devicetree fixes, addressing incorrect
    data in DT nodes
 
  - Three updates to the MAINTAINERS file, including Florian
    Fainelli taking over BCM283x/BCM2711 (Raspberry Pi)
    from Nicolas Saenz Julienne
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Merge tag 'soc-fixes-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "A number of fixes have accumulated, but they are largely for harmless
  issues:

   - Several OF node leak fixes

   - A fix to the Exynos7885 UART clock description

   - DTS fixes to prevent boot failures on TI AM64 and J721s2

   - Bus probe error handling fixes for Baikal-T1

   - A fixup to the way STM32 SoCs use separate dts files for different
     firmware stacks

   - Multiple code fixes for Arm SCMI firmware, all dealing with
     robustness of the implementation

   - Multiple NXP i.MX devicetree fixes, addressing incorrect data in DT
     nodes

   - Three updates to the MAINTAINERS file, including Florian Fainelli
     taking over BCM283x/BCM2711 (Raspberry Pi) from Nicolas Saenz
     Julienne"

* tag 'soc-fixes-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (29 commits)
  ARM: dts: aspeed: nuvia: rename vendor nuvia to qcom
  arm: mach-spear: Add missing of_node_put() in time.c
  ARM: cns3xxx: Fix refcount leak in cns3xxx_init
  MAINTAINERS: Update email address
  arm64: dts: ti: k3-am64-main: Remove support for HS400 speed mode
  arm64: dts: ti: k3-j721s2: Fix overlapping GICD memory region
  ARM: dts: bcm2711-rpi-400: Fix GPIO line names
  bus: bt1-axi: Don't print error on -EPROBE_DEFER
  bus: bt1-apb: Don't print error on -EPROBE_DEFER
  ARM: Fix refcount leak in axxia_boot_secondary
  ARM: dts: stm32: move SCMI related nodes in a dedicated file for stm32mp15
  soc: imx: imx8m-blk-ctrl: fix display clock for LCDIF2 power domain
  ARM: dts: imx6qdl-colibri: Fix capacitive touch reset polarity
  ARM: dts: imx6qdl: correct PU regulator ramp delay
  firmware: arm_scmi: Fix incorrect error propagation in scmi_voltage_descriptors_get
  firmware: arm_scmi: Avoid using extended string-buffers sizes if not necessary
  firmware: arm_scmi: Fix SENSOR_AXIS_NAME_GET behaviour when unsupported
  ARM: dts: imx7: Move hsic_phy power domain to HSIC PHY node
  soc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm_probe
  MAINTAINERS: Update BCM2711/BCM2835 maintainer
  ...
2022-06-26 14:12:56 -07:00
Linus Torvalds
413c1f1491 Minor things, mainly - mailmap updates, MAINTAINERS updates, etc.
Fixes for post-5.18 changes:
 
 - fix for a damon boot hang, from SeongJae
 
 - fix for a kfence warning splat, from Jason Donenfeld
 
 - fix for zero-pfn pinning, from Alex Williamson
 
 - fix for fallocate hole punch clearing, from Mike Kravetz
 
 Fixes pre-5.18 material:
 
 - fix for a performance regression, from Marcelo
 
 - fix for a hwpoisining BUG from zhenwei pi
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Merge tag 'mm-hotfixes-stable-2022-06-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull hotfixes from Andrew Morton:
 "Minor things, mainly - mailmap updates, MAINTAINERS updates, etc.

  Fixes for this merge window:

   - fix for a damon boot hang, from SeongJae

   - fix for a kfence warning splat, from Jason Donenfeld

   - fix for zero-pfn pinning, from Alex Williamson

   - fix for fallocate hole punch clearing, from Mike Kravetz

  Fixes for previous releases:

   - fix for a performance regression, from Marcelo

   - fix for a hwpoisining BUG from zhenwei pi"

* tag 'mm-hotfixes-stable-2022-06-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mailmap: add entry for Christian Marangi
  mm/memory-failure: disable unpoison once hw error happens
  hugetlbfs: zero partial pages during fallocate hole punch
  mm: memcontrol: reference to tools/cgroup/memcg_slabinfo.py
  mm: re-allow pinning of zero pfns
  mm/kfence: select random number before taking raw lock
  MAINTAINERS: add maillist information for LoongArch
  MAINTAINERS: update MM tree references
  MAINTAINERS: update Abel Vesa's email
  MAINTAINERS: add MEMORY HOT(UN)PLUG section and add David as reviewer
  MAINTAINERS: add Miaohe Lin as a memory-failure reviewer
  mailmap: add alias for jarkko@profian.com
  mm/damon/reclaim: schedule 'damon_reclaim_timer' only after 'system_wq' is initialized
  kthread: make it clear that kthread_create_on_node() might be terminated by any fatal signal
  mm: lru_cache_disable: use synchronize_rcu_expedited
  mm/page_isolation.c: fix one kernel-doc comment
2022-06-26 14:00:55 -07:00
Linus Torvalds
8c23f235a6 gpio fixes for v5.19-rc4
- make the irqchip immutable in gpio-realtek-otto
 - fix error code propagation in gpio-winbond
 - fix device removing in gpio-grgpio
 - fix a typo in gpio-mxs which indicates the driver is for a different model
 - documentation fixes
 - MAINTAINERS file updates
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Merge tag 'gpio-fixes-for-v5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:

 - make the irqchip immutable in gpio-realtek-otto

 - fix error code propagation in gpio-winbond

 - fix device removing in gpio-grgpio

 - fix a typo in gpio-mxs which indicates the driver is for a different
   model

 - documentation fixes

 - MAINTAINERS file updates

* tag 'gpio-fixes-for-v5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: mxs: Fix header comment
  gpio: Fix kernel-doc comments to nested union
  gpio: grgpio: Fix device removing
  gpio: winbond: Fix error code in winbond_gpio_get()
  gpio: realtek-otto: Make the irqchip immutable
  docs: driver-api: gpio: Fix filename mismatch
  MAINTAINERS: add include/dt-bindings/gpio to GPIO SUBSYSTEM
2022-06-24 17:01:31 -07:00
Dan Carpenter
3b89b511ea net: fix IFF_TX_SKB_NO_LINEAR definition
The "1<<31" shift has a sign extension bug so IFF_TX_SKB_NO_LINEAR is
0xffffffff80000000 instead of 0x0000000080000000.

Fixes: c2ff53d8049f ("net: Add priv_flags for allow tx skb without linear")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Link: https://lore.kernel.org/r/YrRrcGttfEVnf85Q@kili
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-24 16:45:40 -07:00
Linus Torvalds
43627618a0 ATA fixes for 5.19-rc4
Only a single patch in this pull request, to fix tracing of command
 completion. From Edward.
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Merge tag 'ata-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ATA fix from Damien Le Moal:

 - a single patch to fix tracing of command completion (Edward)

* tag 'ata-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: libata: add qc->flags in ata_qc_complete_template tracepoint
2022-06-24 11:12:34 -07:00
Linus Torvalds
a237cfd6b7 block-5.19-2022-06-24
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Merge tag 'block-5.19-2022-06-24' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - Series fixing issues with sysfs locking and name reuse (Christoph)

 - NVMe pull request via Christoph:
      - Fix the mixed up CRIMS/CRWMS constants (Joel Granados)
      - Add another broken identifier quirk (Leo Savernik)
      - Fix up a quirk because Samsung reuses PCI IDs over different
        products (Christoph Hellwig)

 - Remove old WARN_ON() that doesn't apply anymore (Li)

 - Fix for using a stale cached request value for rq-qos throttling
   mechanisms that may schedule(), like iocost (me)

 - Remove unused parameter to blk_independent_access_range() (Damien)

* tag 'block-5.19-2022-06-24' of git://git.kernel.dk/linux-block:
  block: remove WARN_ON() from bd_link_disk_holder
  nvme: move the Samsung X5 quirk entry to the core quirks
  nvme: fix the CRIMS and CRWMS definitions to match the spec
  nvme: add a bogus subsystem NQN quirk for Micron MTFDKBA2T0TFH
  block: pop cached rq before potentially blocking rq_qos_throttle()
  block: remove queue from struct blk_independent_access_range
  block: freeze the queue earlier in del_gendisk
  block: remove per-disk debugfs files in blk_unregister_queue
  block: serialize all debugfs operations using q->debugfs_mutex
  block: disable the elevator int del_gendisk
2022-06-24 11:07:54 -07:00
Linus Torvalds
598f240487 io_uring-5.19-2022-06-24
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Merge tag 'io_uring-5.19-2022-06-24' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A few fixes that should go into the 5.19 release. All are fixing
  issues that either happened in this release, or going to stable.

  In detail:

   - A small series of fixlets for the poll handling, all destined for
     stable (Pavel)

   - Fix a merge error from myself that caused a potential -EINVAL for
     the recv/recvmsg flag setting (me)

   - Fix a kbuf recycling issue for partial IO (me)

   - Use the original request for the inflight tracking (me)

   - Fix an issue introduced this merge window with trace points using a
     custom decoder function, which won't work for perf (Dylan)"

* tag 'io_uring-5.19-2022-06-24' of git://git.kernel.dk/linux-block:
  io_uring: use original request task for inflight tracking
  io_uring: move io_uring_get_opcode out of TP_printk
  io_uring: fix double poll leak on repolling
  io_uring: fix wrong arm_poll error handling
  io_uring: fail links when poll fails
  io_uring: fix req->apoll_events
  io_uring: fix merge error in checking send/recv addr2 flags
  io_uring: mark reissue requests with REQ_F_PARTIAL_IO
2022-06-24 11:02:26 -07:00
Linus Torvalds
9d882352ba printk fixes for 5.19-rc4
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Merge tag 'printk-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull printk kernel thread revert from Petr Mladek:
 "Revert printk console kthreads.

  The testing of 5.19 release candidates revealed issues that did not
  happen when all consoles were serialized using the console semaphore.

  More time is needed to check expectations of the existing console
  drivers and be confident that they can be safely used in parallel"

* tag 'printk-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  Revert "printk: add functions to prefer direct printing"
  Revert "printk: add kthread console printers"
  Revert "printk: extend console_lock for per-console locking"
  Revert "printk: remove @console_locked"
  Revert "printk: Block console kthreads when direct printing will be required"
  Revert "printk: Wait for the global console lock when the system is going down"
2022-06-24 10:54:07 -07:00
Jason Wang
c346dae4f3 virtio: disable notification hardening by default
We try to harden virtio device notifications in 8b4ec69d7e09 ("virtio:
harden vring IRQ"). It works with the assumption that the driver or
core can properly call virtio_device_ready() at the right
place. Unfortunately, this seems to be not true and uncover various
bugs of the existing drivers, mainly the issue of using
virtio_device_ready() incorrectly.

So let's add a Kconfig option and disable it by default. It gives
us time to fix the drivers and then we can consider re-enabling it.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220622012940.21441-1-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
2022-06-24 02:49:48 -04:00
Akira Yokosawa
c7e1c44358 gpio: Fix kernel-doc comments to nested union
Commit 48ec13d36d3f ("gpio: Properly document parent data union")
is supposed to have fixed a warning from "make htmldocs" regarding
kernel-doc comments to union members.  However, the same warning
still remains [1].

Fix the issue by following the example found in section "Nested
structs/unions" of Documentation/doc-guide/kernel-doc.rst.

Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 48ec13d36d3f ("gpio: Properly document parent data union")
Link: https://lore.kernel.org/r/20220606093302.21febee3@canb.auug.org.au/ [1]
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Tested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-06-23 22:17:43 +02:00
Linus Torvalds
ba461afbef Random number generator fixes for Linux 5.19-rc4.
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Merge tag 'random-5.19-rc4-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

Pull random number generator fixes from Jason Donenfeld:

 - A change to schedule the interrupt randomness mixing less often, yet
   credit a little more each time, to reduce overhead during interrupt
   storms.

 - Squelch an undesired pr_warn() from __ratelimit(), which was causing
   problems in the reporters' CI.

 - A trivial comment fix.

* tag 'random-5.19-rc4-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
  random: update comment from copy_to_user() -> copy_to_iter()
  random: quiet urandom warning ratelimit suppression message
  random: schedule mix_interrupt_randomness() less often
2022-06-23 14:00:49 -05:00
Petr Mladek
51889d225c Merge branch 'rework/kthreads' into for-linus 2022-06-23 19:11:28 +02:00
Petr Mladek
07a22b6194 Revert "printk: add functions to prefer direct printing"
This reverts commit 2bb2b7b57f81255c13f4395ea911d6bdc70c9fe2.

The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.

It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.

printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.

Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-7-pmladek@suse.com
2022-06-23 18:41:40 +02:00
Petr Mladek
5831788afb Revert "printk: add kthread console printers"
This reverts commit 09c5ba0aa2fcfdadb17d045c3ee6f86d69270df7.

This reverts commit b87f02307d3cfbda768520f0687c51ca77e14fc3.

The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.

It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.

printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.

Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-6-pmladek@suse.com
2022-06-23 18:41:40 +02:00
Petr Mladek
2d9ef940f8 Revert "printk: extend console_lock for per-console locking"
This reverts commit 8e274732115f63c1d09136284431b3555bd5cc56.

The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.

It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.

printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.

Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-5-pmladek@suse.com
2022-06-23 18:41:40 +02:00
Petr Mladek
20fb0c8272 Revert "printk: Wait for the global console lock when the system is going down"
This reverts commit b87f02307d3cfbda768520f0687c51ca77e14fc3.

The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.

It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.

printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.

Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-2-pmladek@suse.com
2022-06-23 18:41:40 +02:00
Dylan Yudaken
e70b64a3f2 io_uring: move io_uring_get_opcode out of TP_printk
The TP_printk macro's are not supposed to use custom code ([1]) or else
tools such as perf cannot use these events.

Convert the opcode string representation to use the __string wiring that
the event framework provides ([2]).

[1]: https://lwn.net/Articles/379903/
[2]: https://lwn.net/Articles/381064/

Fixes: 033b87d24f72 ("io_uring: use the text representation of ops in trace")
Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220623083743.2648321-1-dylany@fb.com
[axboe: fixup spurious removal of sq_thread assignment]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-06-23 08:40:36 -06:00
Linus Torvalds
399bd66e21 Networking fixes for 5.19-rc4, including fixes from bpf and netfilter.
Current release - regressions:
   - netfilter: cttimeout: fix slab-out-of-bounds read in cttimeout_net_exit
 
 Current release - new code bugs:
   - bpf: ftrace: keep address offset in ftrace_lookup_symbols
 
   - bpf: force cookies array to follow symbols sorting
 
 Previous releases - regressions:
   - ipv4: ping: fix bind address validity check
 
   - tipc: fix use-after-free read in tipc_named_reinit
 
   - eth: veth: add updating of trans_start
 
 Previous releases - always broken:
   - sock: redo the psock vs ULP protection check
 
   - netfilter: nf_dup_netdev: fix skb_under_panic
 
   - bpf: fix request_sock leak in sk lookup helpers
 
   - eth: igb: fix a use-after-free issue in igb_clean_tx_ring
 
   - eth: ice: prohibit improper channel config for DCB
 
   - eth: at803x: fix null pointer dereference on AR9331 phy
 
   - eth: virtio_net: fix xdp_rxq_info bug after suspend/resume
 
 Misc:
   - eth: hinic: replace memcpy() with direct assignment
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from bpf and netfilter.

  Current release - regressions:

   - netfilter: cttimeout: fix slab-out-of-bounds read in
     cttimeout_net_exit

Current release - new code bugs:

   - bpf: ftrace: keep address offset in ftrace_lookup_symbols

   - bpf: force cookies array to follow symbols sorting

  Previous releases - regressions:

   - ipv4: ping: fix bind address validity check

   - tipc: fix use-after-free read in tipc_named_reinit

   - eth: veth: add updating of trans_start

  Previous releases - always broken:

   - sock: redo the psock vs ULP protection check

   - netfilter: nf_dup_netdev: fix skb_under_panic

   - bpf: fix request_sock leak in sk lookup helpers

   - eth: igb: fix a use-after-free issue in igb_clean_tx_ring

   - eth: ice: prohibit improper channel config for DCB

   - eth: at803x: fix null pointer dereference on AR9331 phy

   - eth: virtio_net: fix xdp_rxq_info bug after suspend/resume

  Misc:

   - eth: hinic: replace memcpy() with direct assignment"

* tag 'net-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (47 commits)
  net: openvswitch: fix parsing of nw_proto for IPv6 fragments
  sock: redo the psock vs ULP protection check
  Revert "net/tls: fix tls_sk_proto_close executed repeatedly"
  virtio_net: fix xdp_rxq_info bug after suspend/resume
  igb: Make DMA faster when CPU is active on the PCIe link
  net: dsa: qca8k: reduce mgmt ethernet timeout
  net: dsa: qca8k: reset cpu port on MTU change
  MAINTAINERS: Add a maintainer for OCP Time Card
  hinic: Replace memcpy() with direct assignment
  Revert "drivers/net/ethernet/neterion/vxge: Fix a use-after-free bug in vxge-main.c"
  net: phy: smsc: Disable Energy Detect Power-Down in interrupt mode
  ice: ethtool: Prohibit improper channel config for DCB
  ice: ethtool: advertise 1000M speeds properly
  ice: Fix switchdev rules book keeping
  ice: ignore protocol field in GTP offload
  netfilter: nf_dup_netdev: add and use recursion counter
  netfilter: nf_dup_netdev: do not push mac header a second time
  selftests: netfilter: correct PKTGEN_SCRIPT_PATHS in nft_concat_range.sh
  net/tls: fix tls_sk_proto_close executed repeatedly
  erspan: do not assume transport header is always set
  ...
2022-06-23 09:01:01 -05:00
Joel Granados
23c9cd5600 nvme: fix the CRIMS and CRWMS definitions to match the spec
Adjust the values of NVME_CAP_CRMS_CRIMS and NVME_CAP_CRMS_CRWMS masks as
they are different from the ones in TP4084 - Time-to-ready.

Fixes: 354201c53e61 ("nvme: add support for TP4084 - Time-to-Ready Enhancements").
Signed-off-by: Joel Granados <j.granados@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2022-06-23 15:22:22 +02:00
Jakub Kicinski
e34a07c0ae sock: redo the psock vs ULP protection check
Commit 8a59f9d1e3d4 ("sock: Introduce sk->sk_prot->psock_update_sk_prot()")
has moved the inet_csk_has_ulp(sk) check from sk_psock_init() to
the new tcp_bpf_update_proto() function. I'm guessing that this
was done to allow creating psocks for non-inet sockets.

Unfortunately the destruction path for psock includes the ULP
unwind, so we need to fail the sk_psock_init() itself.
Otherwise if ULP is already present we'll notice that later,
and call tcp_update_ulp() with the sk_proto of the ULP
itself, which will most likely result in the ULP looping
its callbacks.

Fixes: 8a59f9d1e3d4 ("sock: Introduce sk->sk_prot->psock_update_sk_prot()")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Tested-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/r/20220620191353.1184629-2-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-06-23 10:08:30 +02:00
Linus Torvalds
0273fd423b Certs changes
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Merge tag 'certs-20220621' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull signature checking selftest from David Howells:
 "The signature checking code, as used by module signing, kexec, etc.,
  is non-FIPS compliant as there is no selftest.

  For a kernel to be FIPS-compliant, signature checking would have to be
  tested before being used, and the box would need to panic if it's not
  available (probably reasonable as simply disabling signature checking
  would prevent you from loading any driver modules).

  Deal with this by adding a minimal test.

  This is split into two patches: the first moves load_certificate_list()
  to the same place as the X.509 code to make it more accessible
  internally; the second adds a selftest"

* tag 'certs-20220621' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  certs: Add FIPS selftests
  certs: Move load_certificate_list() to be with the asymmetric keys code
2022-06-21 12:13:53 -05:00
David Howells
60050ffe3d certs: Move load_certificate_list() to be with the asymmetric keys code
Move load_certificate_list(), which loads a series of binary X.509
certificates from a blob and inserts them as keys into a keyring, to be
with the asymmetric keys code that it drives.

This makes it easier to add FIPS selftest code in which we need to load up
a private keyring for the tests to use.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Simo Sorce <simo@redhat.com>
Reviewed-by: Herbert Xu <herbert@gondor.apana.org.au>
cc: keyrings@vger.kernel.org
cc: linux-crypto@vger.kernel.org
Link: https://lore.kernel.org/r/165515742145.1554877.13488098107542537203.stgit@warthog.procyon.org.uk/
2022-06-21 16:05:06 +01:00
Damien Le Moal
9243fc4cd2 block: remove queue from struct blk_independent_access_range
The request queue pointer in struct blk_independent_access_range is
unused. Remove it.

Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Fixes: 41e46b3c2aa2 ("block: Fix potential deadlock in blk_ia_range_sysfs_show()")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220603053529.76405-1-damien.lemoal@opensource.wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-06-19 18:40:11 -06:00
Jason A. Donenfeld
c01d4d0a82 random: quiet urandom warning ratelimit suppression message
random.c ratelimits how much it warns about uninitialized urandom reads
using __ratelimit(). When the RNG is finally initialized, it prints the
number of missed messages due to ratelimiting.

It has been this way since that functionality was introduced back in
2018. Recently, cc1e127bfa95 ("random: remove ratelimiting for in-kernel
unseeded randomness") put a bit more stress on the urandom ratelimiting,
which teased out a bug in the implementation.

Specifically, when under pressure, __ratelimit() will print its own
message and reset the count back to 0, making the final message at the
end less useful. Secondly, it does so as a pr_warn(), which apparently
is undesirable for people's CI.

Fortunately, __ratelimit() has the RATELIMIT_MSG_ON_RELEASE flag exactly
for this purpose, so we set the flag.

Fixes: 4e00b339e264 ("random: rate limit unseeded randomness warnings")
Cc: stable@vger.kernel.org
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Reported-by: Ron Economos <re@w6rz.net>
Tested-by: Ron Economos <re@w6rz.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-06-19 23:50:46 +02:00
Linus Torvalds
5d770f11a1 Build tool updates:
- Remove obsolete CONFIG_X86_SMAP reference from objtool
 
  - Fix overlapping text section failures in faddr2line for real
 
  - Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it
    with finegrained annotations so objtool can validate that code
    correctly.
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Merge tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull build tooling updates from Thomas Gleixner:

 - Remove obsolete CONFIG_X86_SMAP reference from objtool

 - Fix overlapping text section failures in faddr2line for real

 - Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it
   with finegrained annotations so objtool can validate that code
   correctly.

* tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ftrace: Remove OBJECT_FILES_NON_STANDARD usage
  faddr2line: Fix overlapping text section failures, the sequel
  objtool: Fix obsolete reference to CONFIG_X86_SMAP
2022-06-19 09:54:16 -05:00
Linus Torvalds
93d17c1c8c printk fixes for 5.19-rc3
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Merge tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull printk fixes from Petr Mladek:
 "Make the global console_sem available for CPU that is handling panic()
  or shutdown.

  This is an old problem when an existing console lock owner might block
  console output, but it became more visible with the kthreads"

* tag 'printk-for-5.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  printk: Wait for the global console lock when the system is going down
  printk: Block console kthreads when direct printing will be required
2022-06-17 14:57:42 -05:00
Linus Torvalds
462abc9de7 block-5.19-2022-06-16
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Merge tag 'block-5.19-2022-06-16' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request from Christoph
      - Quirks, quirks, quirks to work around buggy consumer grade
        devices (Keith Bush, Ning Wang, Stefan Reiter, Rasheed Hsueh)
      - Better kernel messages for devices that need quirking (Keith
        Bush)
      - Make a kernel message more useful (Thomas Weißschuh)

 - MD pull request from Song, with a few fixes

 - blk-mq sysfs locking fixes (Ming)

 - BFQ stats fix (Bart)

 - blk-mq offline queue fix (Bart)

 - blk-mq flush request tag fix (Ming)

* tag 'block-5.19-2022-06-16' of git://git.kernel.dk/linux-block:
  block/bfq: Enable I/O statistics
  blk-mq: don't clear flush_rq from tags->rqs[]
  blk-mq: avoid to touch q->elevator without any protection
  blk-mq: protect q->elevator by ->sysfs_lock in blk_mq_elv_switch_none
  block: Fix handling of offline queues in blk_mq_alloc_request_hctx()
  md/raid5-ppl: Fix argument order in bio_alloc_bioset()
  Revert "md: don't unregister sync_thread with reconfig_mutex held"
  nvme-pci: disable write zeros support on UMIC and Samsung SSDs
  nvme-pci: avoid the deepest sleep state on ZHITAI TiPro7000 SSDs
  nvme-pci: sk hynix p31 has bogus namespace ids
  nvme-pci: smi has bogus namespace ids
  nvme-pci: phison e12 has bogus namespace ids
  nvme-pci: add NVME_QUIRK_BOGUS_NID for ADATA XPG GAMMIX S50
  nvme-pci: add trouble shooting steps for timeouts
  nvme: add bug report info for global duplicate id
  nvme: add device name to warning in uuid_show()
2022-06-17 11:22:58 -07:00
Linus Torvalds
f8e174c307 io_uring-5.19-2022-06-16
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Merge tag 'io_uring-5.19-2022-06-16' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Bigger than usual at this time, both because we missed -rc2, but also
  because of some reverts that we chose to do. In detail:

   - Adjust mapped buffer API while we still can (Dylan)

   - Mapped buffer fixes (Dylan, Hao, Pavel, me)

   - Fix for uring_cmd wrong API usage for task_work (Dylan)

   - Fix for bug introduced in fixed file closing (Hao)

   - Fix race in buffer/file resource handling (Pavel)

   - Revert the NOP support for CQE32 and buffer selection that was
     brought up during the merge window (Pavel)

   - Remove IORING_CLOSE_FD_AND_FILE_SLOT introduced in this merge
     window. The API needs further refining, so just yank it for now and
     we'll revisit for a later kernel.

   - Series cleaning up the CQE32 support added in this merge window,
     making it more integrated rather than sitting on the side (Pavel)"

* tag 'io_uring-5.19-2022-06-16' of git://git.kernel.dk/linux-block: (21 commits)
  io_uring: recycle provided buffer if we punt to io-wq
  io_uring: do not use prio task_work_add in uring_cmd
  io_uring: commit non-pollable provided mapped buffers upfront
  io_uring: make io_fill_cqe_aux honour CQE32
  io_uring: remove __io_fill_cqe() helper
  io_uring: fix ->extra{1,2} misuse
  io_uring: fill extra big cqe fields from req
  io_uring: unite fill_cqe and the 32B version
  io_uring: get rid of __io_fill_cqe{32}_req()
  io_uring: remove IORING_CLOSE_FD_AND_FILE_SLOT
  Revert "io_uring: add buffer selection support to IORING_OP_NOP"
  Revert "io_uring: support CQE32 for nop operation"
  io_uring: limit size of provided buffer ring
  io_uring: fix types in provided buffer ring
  io_uring: fix index calculation
  io_uring: fix double unlock for pbuf select
  io_uring: kbuf: fix bug of not consuming ring buffer in partial io case
  io_uring: openclose: fix bug of closing wrong fixed file
  io_uring: fix not locked access to fixed buf table
  io_uring: fix races with buffer table unregister
  ...
2022-06-17 11:14:07 -07:00