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Previously the kernel used to ignore whether the firmware masked CPPC
or CPPCv2 and would just pretend that it worked.
When support for the USB4 bit in _OSC was introduced from commit
9e1f561afb ("ACPI: Execute platform _OSC also with query bit clear")
the kernel began to look at the return when the query bit was clear.
This caused regressions that were misdiagnosed and attempted to be solved
as part of commit 2ca8e6285250 ("Revert "ACPI: Pass the same capabilities
to the _OSC regardless of the query flag""). This caused a different
regression where non-Intel systems weren't able to negotiate _OSC
properly.
This was reverted in commit 2ca8e6285250 ("Revert "ACPI: Pass the same
capabilities to the _OSC regardless of the query flag"") and attempted to
be fixed by commit c42fa24b4475 ("ACPI: bus: Avoid using CPPC if not
supported by firmware") but the regression still returned.
These systems with the regression only load support for CPPC from an SSDT
dynamically when _OSC reports CPPC v2. Avoid the problem by not letting
CPPC satisfy the requirement in `acpi_cppc_processor_probe`.
Reported-by: CUI Hao <cuihao.leo@gmail.com>
Reported-by: maxim.novozhilov@gmail.com
Reported-by: lethe.tree@protonmail.com
Reported-by: garystephenwright@gmail.com
Reported-by: galaxyking0419@gmail.com
Fixes: c42fa24b4475 ("ACPI: bus: Avoid using CPPC if not supported by firmware")
Fixes: 2ca8e6285250 ("Revert "ACPI Pass the same capabilities to the _OSC regardless of the query flag"")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=213023
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2075387
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: CUI Hao <cuihao.leo@gmail.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix a NULL pointer dereference in a devfreq driver and a runtime
PM framework issue that may cause a supplier device to be suspended
before its consumer.
Specifics:
- Fix NULL pointer dereference related to printing a diagnostic
message in the exynos-bus devfreq driver (Christian Marangi)
- Fix race condition in the runtime PM framework which in some cases
may cause a supplier device to be suspended when its consumer is
still active (Rafael Wysocki)"
* tag 'pm-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / devfreq: exynos-bus: Fix NULL pointer dereference
PM: runtime: Fix supplier device management during consumer probe
PM: runtime: Redefine pm_runtime_release_supplier()
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Merge a runtime PM framework cleanup and fix related to device links.
* pm-core:
PM: runtime: Fix supplier device management during consumer probe
PM: runtime: Redefine pm_runtime_release_supplier()
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Instead of passing an extra bool argument to pm_runtime_release_supplier(),
make its callers take care of triggering a runtime-suspend of the
supplier device as needed.
No expected functional impact.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: 5.1+ <stable@vger.kernel.org> # 5.1+
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git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl fixes from Vishal Verma:
- Update MAINTAINERS for Ben's email
- Fix cleanup of port devices on failure to probe driver
- Fix endianness in get/set LSA mailbox command structures
- Fix memregion_free() fallback definition
- Fix missing variable payload checks in CXL cmd size validation
* tag 'cxl-fixes-for-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/mbox: Fix missing variable payload checks in cmd size validation
memregion: Fix memregion_free() fallback definition
cxl/mbox: Use __le32 in get,set_lsa mailbox structures
cxl/core: Use is_endpoint_decoder
cxl: Fix cleanup of port devices on failure to probe driver.
MAINTAINERS: Update Ben's email address
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In the CONFIG_MEMREGION=n case, memregion_free() is meant to be a static
inline. 0day reports:
In file included from drivers/cxl/core/port.c:4:
include/linux/memregion.h:19:6: warning: no previous prototype for
function 'memregion_free' [-Wmissing-prototypes]
Mark memregion_free() static.
Fixes: 33dd70752cd7 ("lib: Uplevel the pmem "region" ida to a global allocator")
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Link: https://lore.kernel.org/r/165601455171.4042645.3350844271068713515.stgit@dwillia2-xfh
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- fix device setup failures in the Intel VT-d driver when the PASID
table is shared
- fix Intel VT-d device hot-add failure due to wrong device notifier
order
- remove the old IOMMU mailing list from the MAINTAINERS file now that
it has been retired
* tag 'iommu-fixes-v5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
MAINTAINERS: Remove iommu@lists.linux-foundation.org
iommu/vt-d: Fix RID2PASID setup/teardown failure
iommu/vt-d: Fix PCI bus rescan device hot add
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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>
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Pull block fixes from Jens Axboe:
"NVMe pull request with another id quirk addition, and a tracing fix"
* tag 'block-5.19-2022-07-08' of git://git.kernel.dk/linux-block:
nvme: use struct group for generic command dwords
nvme-pci: phison e16 has bogus namespace ids
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This will allow the trace event to know the full size of the data
intended to be copied and silence read overflow checks.
Reported-by: John Garry <john.garry@huawei.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Pull io_uring tweak from Jens Axboe:
"Just a minor tweak to an addition made in this release cycle: padding
a 32-bit value that's in a 64-bit union to avoid any potential
funkiness from that"
* tag 'io_uring-5.19-2022-07-08' of git://git.kernel.dk/linux-block:
io_uring: explicit sqe padding for ioctl commands
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32 bit sqe->cmd_op is an union with 64 bit values. It's always a good
idea to do padding explicitly. Also zero check it in prep, so it can be
used in the future if needed without compatibility concerns.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/e6b95a05e970af79000435166185e85b196b2ba2.1657202417.git.asml.silence@gmail.com
[axboe: turn bitwise OR into logical variant]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes from Helge Deller:
- fbcon now prevents switching to screen resolutions which are smaller
than the font size, and prevents enabling a font which is bigger than
the current screen resolution. This fixes vmalloc-out-of-bounds
accesses found by KASAN.
- Guiling Deng fixed a bug where the centered fbdev logo wasn't
displayed correctly if the screen size matched the logo size.
- Hsin-Yi Wang provided a patch to include errno.h to fix build when
CONFIG_OF isn't enabled.
* tag 'for-5.19/fbdev-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible()
fbmem: Check virtual screen sizes in fb_set_var()
fbcon: Prevent that screen size is smaller than font size
fbcon: Disallow setting font bigger than screen size
video: of_display_timing.h: include errno.h
fbdev: fbmem: Fix logo center image dx issue
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We need to prevent that users configure a screen size which is smaller than the
currently selected font size. Otherwise rendering chars on the screen will
access memory outside the graphics memory region.
This patch adds a new function fbcon_modechange_possible() which
implements this check and which later may be extended with other checks
if necessary. The new function is called from the FBIOPUT_VSCREENINFO
ioctl handler in fbmem.c, which will return -EINVAL if userspace asked
for a too small screen size.
Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org # v5.4+
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If CONFIG_OF is not enabled, default of_get_display_timing() returns an
errno, so include the header.
Fixes: 422b67e0b31a ("videomode: provide dummy inline functions for !CONFIG_OF")
Suggested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Helge Deller <deller@gmx.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf, netfilter, can, and bluetooth.
Current release - regressions:
- bluetooth: fix deadlock on hci_power_on_sync
Previous releases - regressions:
- sched: act_police: allow 'continue' action offload
- eth: usbnet: fix memory leak in error case
- eth: ibmvnic: properly dispose of all skbs during a failover
Previous releases - always broken:
- bpf:
- fix insufficient bounds propagation from
adjust_scalar_min_max_vals
- clear page contiguity bit when unmapping pool
- netfilter: nft_set_pipapo: release elements in clone from
abort path
- mptcp: netlink: issue MP_PRIO signals from userspace PMs
- can:
- rcar_canfd: fix data transmission failed on R-Car V3U
- gs_usb: gs_usb_open/close(): fix memory leak
Misc:
- add Wenjia as SMC maintainer"
* tag 'net-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (57 commits)
wireguard: Kconfig: select CRYPTO_CHACHA_S390
crypto: s390 - do not depend on CRYPTO_HW for SIMD implementations
wireguard: selftests: use microvm on x86
wireguard: selftests: always call kernel makefile
wireguard: selftests: use virt machine on m68k
wireguard: selftests: set fake real time in init
r8169: fix accessing unset transport header
net: rose: fix UAF bug caused by rose_t0timer_expiry
usbnet: fix memory leak in error case
Revert "tls: rx: move counting TlsDecryptErrors for sync"
mptcp: update MIB_RMSUBFLOW in cmd_sf_destroy
mptcp: fix local endpoint accounting
selftests: mptcp: userspace PM support for MP_PRIO signals
mptcp: netlink: issue MP_PRIO signals from userspace PMs
mptcp: Acquire the subflow socket lock before modifying MP_PRIO flags
mptcp: Avoid acquiring PM lock for subflow priority changes
mptcp: fix locking in mptcp_nl_cmd_sf_destroy()
net/mlx5e: Fix matchall police parameters validation
net/sched: act_police: allow 'continue' action offload
net: lan966x: hardcode the number of external ports
...
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Offloading police with action TC_ACT_UNSPEC was erroneously disabled even
though it was supported by mlx5 matchall offload implementation, which
didn't verify the action type but instead assumed that any single police
action attached to matchall classifier is a 'continue' action. Lack of
action type check made it non-obvious what mlx5 matchall implementation
actually supports and caused implementers and reviewers of referenced
commits to disallow it as a part of improved validation code.
Fixes: b8cd5831c61c ("net: flow_offload: add tc police action parameters")
Fixes: b50e462bc22d ("net/sched: act_police: Add extack messages for offload failure")
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This became largish as it includes the pending ASoC fixes.
Almost all changes are device-specific small fixes, while many of them
are coverage for mixer issues that were detected by selftest. In
addition, usual suspects for HD/USB-audio are there"
* tag 'sound-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (43 commits)
ALSA: cs46xx: Fix missing snd_card_free() call at probe error
ALSA: usb-audio: Add quirk for Fiero SC-01 (fw v1.0.0)
ALSA: usb-audio: Add quirk for Fiero SC-01
ALSA: hda/realtek: Add quirk for Clevo L140PU
ALSA: usb-audio: Add quirks for MacroSilicon MS2100/MS2106 devices
ASoC: madera: Fix event generation for rate controls
ASoC: madera: Fix event generation for OUT1 demux
ASoC: cs47l15: Fix event generation for low power mux control
ASoC: cs35l41: Add ASP TX3/4 source to register patch
ASoC: dapm: Initialise kcontrol data for mux/demux controls
ASoC: rt711-sdca: fix kernel NULL pointer dereference when IO error
ASoC: cs35l41: Correct some control names
ASoC: wm5110: Fix DRE control
ASoC: wm_adsp: Fix event for preloader
MAINTAINERS: update ASoC Qualcomm maintainer email-id
ASoC: rockchip: i2s: switch BCLK to GPIO
ASoC: SOF: Intel: disable IMR boot when resuming from ACPI S4 and S5 states
ASoC: SOF: pm: add definitions for S4 and S5 states
ASoC: SOF: pm: add explicit behavior for ACPI S1 and S2
ASoC: SOF: Intel: hda: Fix compressed stream position tracking
...
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Commit 81da8a0b7975 ("ASoC: remove codec hw_write/control_data") removed
use of hw_write_t in struct snd_soc_codec, but it left type definition.
Fully clean it up.
Fixes: 81da8a0b7975 ("ASoC: remove codec hw_write/control_data")
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220610124420.4160986-1-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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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>
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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>
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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
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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>
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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
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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>
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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
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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
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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
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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
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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>
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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
...
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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>
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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>
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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>
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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>
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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>
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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
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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>
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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
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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>
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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
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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>
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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
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git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
Arm SCMI firmware driver fixes for v5.19
Bunch of fixes to address:
1. Issues reported on RK3568 EVB1 and BPI-R2 pro platforms using SCMI.
More checks were added to validate the firmware response but that
resulted in breaking above platforms, so the checks are relaxed when
for cases where there is no potential memory corruption issues.
2. Possible data leak by reading more than required length from the firmware.
Recent addition of support for v3.1 extended names used larger buffers
in the kernel and used their size to read response from the firmware even
for cases where shorter formats are used. While that is mostly harmless
except when firmware sends malformed non-NULL terminated buffers.
3. Possible issues sending unsupported commands to the firmware.
SENSOR_AXIS_NAME_GET added in v3.1 needs to be used only if the firmware
supports it. While the firmware conformant to the spec must return not
supported error for any unsupported features, it is always safer to
avoid issuing commands that are known to be unsupported.
4. Incorrect error propagation in scmi_voltage_descriptors_get.
Since the return value is not reset for each iteration of the loop, the
error value in the previous iteration will be carried for the current one.
Fix that by not saving the return values into local variable.
5. Some warnings reported by cppcheck
* tag 'scmi-fixes-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
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
firmware: arm_scmi: Remove all the unused local variables
firmware: arm_scmi: Relax base protocol sanity checks on the protocol list
Link: https://lore.kernel.org/r/20220614100007.1029881-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Commit b260fccaebdc2 ("firmware: arm_scmi: Add SCMI v3.1 protocol extended
names support") moved all the name string buffers to use the extended buffer
size of 64 instead of the required 16 bytes. While that should be fine if
the firmware terminates the string before 16 bytes, there is possibility
of copying random data if the name is not NULL terminated by the firmware.
SCMI base protocol agent_name/vendor_id/sub_vendor_id are defined by the
specification as NULL-terminated ASCII strings up to 16-bytes in length.
The underlying buffers and message descriptors are currently bigger than
needed; resize them to fit only the strictly needed 16 bytes to avoid
any possible leaks when reading data from the firmware.
Change the size argument of strlcpy to use SCMI_SHORT_NAME_MAX_SIZE always
when dealing with short domain names, so as to limit the possibility that
an ill-formed non-NULL terminated short reply from the SCMI platform
firmware can leak stale content laying in the underlying transport shared
memory area.
While at that, convert all strings handling routines to use the preferred
strscpy.
Link: https://lore.kernel.org/r/20220608095530.497879-1-cristian.marussi@arm.com
Fixes: b260fccaebdc2 ("firmware: arm_scmi: Add SCMI v3.1 protocol extended names support")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
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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
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Currently unpoison_memory(unsigned long pfn) is designed for soft
poison(hwpoison-inject) only. Since 17fae1294ad9d, the KPTE gets cleared
on a x86 platform once hardware memory corrupts.
Unpoisoning a hardware corrupted page puts page back buddy only, the
kernel has a chance to access the page with *NOT PRESENT* KPTE. This
leads BUG during accessing on the corrupted KPTE.
Suggested by David&Naoya, disable unpoison mechanism when a real HW error
happens to avoid BUG like this:
Unpoison: Software-unpoisoned page 0x61234
BUG: unable to handle page fault for address: ffff888061234000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 2c01067 P4D 2c01067 PUD 107267063 PMD 10382b063 PTE 800fffff9edcb062
Oops: 0002 [#1] PREEMPT SMP NOPTI
CPU: 4 PID: 26551 Comm: stress Kdump: loaded Tainted: G M OE 5.18.0.bm.1-amd64 #7
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) ...
RIP: 0010:clear_page_erms+0x7/0x10
Code: ...
RSP: 0000:ffffc90001107bc8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000901 RCX: 0000000000001000
RDX: ffffea0001848d00 RSI: ffffea0001848d40 RDI: ffff888061234000
RBP: ffffea0001848d00 R08: 0000000000000901 R09: 0000000000001276
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000140dca R15: 0000000000000001
FS: 00007fd8b2333740(0000) GS:ffff88813fd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888061234000 CR3: 00000001023d2005 CR4: 0000000000770ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
<TASK>
prep_new_page+0x151/0x170
get_page_from_freelist+0xca0/0xe20
? sysvec_apic_timer_interrupt+0xab/0xc0
? asm_sysvec_apic_timer_interrupt+0x1b/0x20
__alloc_pages+0x17e/0x340
__folio_alloc+0x17/0x40
vma_alloc_folio+0x84/0x280
__handle_mm_fault+0x8d4/0xeb0
handle_mm_fault+0xd5/0x2a0
do_user_addr_fault+0x1d0/0x680
? kvm_read_and_reset_apf_flags+0x3b/0x50
exc_page_fault+0x78/0x170
asm_exc_page_fault+0x27/0x30
Link: https://lkml.kernel.org/r/20220615093209.259374-2-pizhenwei@bytedance.com
Fixes: 847ce401df392 ("HWPOISON: Add unpoisoning support")
Fixes: 17fae1294ad9d ("x86/{mce,mm}: Unmap the entire page if the whole page is affected and poisoned")
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <stable@vger.kernel.org> [5.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The commit referenced below subtly and inadvertently changed the logic to
disallow pinning of zero pfns. This breaks device assignment with vfio
and potentially various other users of gup. Exclude the zero page test
from the negation.
Link: https://lkml.kernel.org/r/165490039431.944052.12458624139225785964.stgit@omen
Fixes: 1c563432588d ("mm: fix is_pinnable_page against a cma page")
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Reported-by: Yishai Hadas <yishaih@nvidia.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: John Dias <joaodias@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Zhangfei Gao <zhangfei.gao@linaro.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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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
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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>
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