* Add a quirk for Acer Nitro V15 against wakeup capability
The following is an automated git shortlog grouped by driver:
gpiolib:
- acpi: Add a quirk for Acer Nitro V15
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Merge tag 'intel-gpio-v6.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into gpio/for-current
intel-gpio for v6.16-2
* Add a quirk for Acer Nitro V15 against wakeup capability
The following is an automated git shortlog grouped by driver:
gpiolib:
- acpi: Add a quirk for Acer Nitro V15
This reverts commit e3eac9f32ec0 ("wifi: cfg80211: Annotate struct
cfg80211_scan_request with __counted_by").
This really has been a completely failed experiment. There were
no actual bugs found, and yet at this point we already have four
"fixes" to it, with nothing to show for but code churn, and it
never even made the code any safer.
In all of the cases that ended up getting "fixed", the structure
is also internally inconsistent after the n_channels setting as
the channel list isn't actually filled yet. You cannot scan with
such a structure, that's just wrong. In mac80211, the struct is
also reused multiple times, so initializing it once is no good.
Some previous "fixes" (e.g. one in brcm80211) are also just setting
n_channels before accessing the array, under the assumption that the
code is correct and the array can be accessed, further showing that
the whole thing is just pointless when the allocation count and use
count are not separate.
If we really wanted to fix it, we'd need to separately track the
number of channels allocated and the number of channels currently
used, but given that no bugs were found despite the numerous syzbot
reports, that'd just be a waste of time.
Remove the __counted_by() annotation. We really should also remove
a number of the n_channels settings that are setting up a structure
that's inconsistent, but that can wait.
Reported-by: syzbot+e834e757bd9b3d3e1251@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=e834e757bd9b3d3e1251
Fixes: e3eac9f32ec0 ("wifi: cfg80211: Annotate struct cfg80211_scan_request with __counted_by")
Link: https://patch.msgid.link/20250714142130.9b0bbb7e1f07.I09112ccde72d445e11348fc2bef68942cb2ffc94@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fix an ath12k performance regression introduce in v6.16-rc1
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Merge tag 'ath-current-20250714' of git://git.kernel.org/pub/scm/linux/kernel/git/ath/ath
Jeff Johnson says:
==================
ath.git update for v6.16-rc7
Fix an ath12k performance regression introduce in v6.16-rc1
==================
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Forcibly disable KCSAN for the sev-nmi.c source file, which only
contains functions annotated as 'noinstr' but is emitted with calls to
KCSAN instrumentation nonetheless. E.g.,
vmlinux.o: error: objtool: __sev_es_nmi_complete+0x58: call to __kcsan_check_access() leaves .noinstr.text section
make[2]: *** [/usr/local/google/home/ardb/linux/scripts/Makefile.vmlinux_o:72: vmlinux.o] Error 1
Fixes: a3cbbb4717e1 ("x86/boot: Move SEV startup code into startup/")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/20250714073402.4107091-2-ardb+git@google.com
When restoring the default socket callbacks during a TLS handshake, we
need to acquire a write lock on sk_callback_lock. Previously, a read
lock was used, which is insufficient for modifying sk_user_data and
sk_data_ready.
Fixes: 675b453e0241 ("nvmet-tcp: enable TLS handshake upcall")
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Procedures for nvme-mpath IO accounting:
1) initialize nvme_request and clear flags;
2) set NVME_MPATH_IO_STATS and increase inflight counter when IO
started;
3) check NVME_MPATH_IO_STATS and decrease inflight counter when IO is
done;
However, for the case nvme_fail_nonready_command(), both step 1) and 2)
are skipped, and if old nvme_request set NVME_MPATH_IO_STATS and then
request is reused, step 3) will still be executed, causing inflight I/O
counter to be negative.
Fix the problem by clearing nvme_request in nvme_fail_nonready_command().
Fixes: ea5e5f42cd2c ("nvme-fabrics: avoid double completions in nvmf_fail_nonready_command")
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Closes: https://lore.kernel.org/all/CAHj4cs_+dauobyYyP805t33WMJVzOWj=7+51p4_j9rA63D9sog@mail.gmail.com/
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This was originally added by commit 8695f060a029 ("nvme: all namespaces
in a subsystem must adhere to a common atomic write size") to check
the all controllers in a subsystem report the same atomic write size,
but the check wasn't quite correct and caused problems for devices
with multiple namespaces that report different LBA sizes. Commit
f46d273449ba ("nvme: fix atomic write size validation") tried to fix
this, but then caused problems for namespace rediscovery after a
format with an LBA size change that changes the AWUPF value.
This drops the validation and essentially reverts those two commits while
keeping the cleanup that went in between the two. We'll need to figure
out how to properly check for the mouse trap that nvme left us, but for
now revert the check to keep devices working for users who couldn't care
less about the atomic write feature.
Fixes: 8695f060a029 ("nvme: all namespaces in a subsystem must adhere to a common atomic write size")
Fixes: f46d273449ba ("nvme: fix atomic write size validation")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alan Adamson <alan.adamson@oracle.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested-by: Alan Adamson <alan.adamson@oracle.com>
Size of ring buffer, as defined in uio_hv_generic driver, is no longer
fixed to 16 KB. This creates a problem in fcopy, since this size was
hardcoded. With the change in place to make ring sysfs node actually
reflect the size of underlying ring buffer, it is safe to get the size
of ring sysfs file and use it for ring buffer size in fcopy daemon.
Fix the issue of disparity in ring buffer size, by making it dynamic
in fcopy uio daemon.
Cc: stable@vger.kernel.org
Fixes: 0315fef2aff9 ("uio_hv_generic: Align ring size to system page")
Signed-off-by: Naman Jain <namjain@linux.microsoft.com>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Link: https://lore.kernel.org/r/20250711060846.9168-1-namjain@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20250711060846.9168-1-namjain@linux.microsoft.com>
Running as nested root on MSHV imposes a different requirement
for the pci-hyperv controller.
In this setup, the interrupt will first come to the L1 (nested) hypervisor,
which will deliver it to the appropriate root CPU. Instead of issuing the
RETARGET hypercall, issue the MAP_DEVICE_INTERRUPT hypercall to L1 to
complete the setup.
Rename hv_arch_irq_unmask() to hv_irq_retarget_interrupt().
Co-developed-by: Jinank Jain <jinankjain@linux.microsoft.com>
Signed-off-by: Jinank Jain <jinankjain@linux.microsoft.com>
Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: Roman Kisel <romank@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/1752261532-7225-4-git-send-email-nunodasneves@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1752261532-7225-4-git-send-email-nunodasneves@linux.microsoft.com>
Move some of the logic of hv_irq_compose_irq_message() into
hv_map_msi_interrupt(). Make hv_map_msi_interrupt() a globally-available
helper function, which will be used to map PCI interrupts when running
in the root partition.
Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: Roman Kisel <romank@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/1752261532-7225-3-git-send-email-nunodasneves@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1752261532-7225-3-git-send-email-nunodasneves@linux.microsoft.com>
When running nested, these hypercalls must be sent to the L0 hypervisor
or VMBus will fail.
Remove hv_do_nested_hypercall() and hv_do_fast_nested_hypercall8()
altogether and open-code these cases, since there are only 2 and all
they do is add the nested bit.
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: Roman Kisel <romank@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/1752261532-7225-2-git-send-email-nunodasneves@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1752261532-7225-2-git-send-email-nunodasneves@linux.microsoft.com>
If a PHY has no driver, the genphy driver is probed/removed directly in
phy_attach/detach. If the PHY's ofnode has an "leds" subnode, then the
LEDs will be (un)registered when probing/removing the genphy driver.
This could occur if the leds are for a non-generic driver that isn't
loaded for whatever reason. Synchronously removing the PHY device in
phy_detach leads to the following deadlock:
rtnl_lock()
ndo_close()
...
phy_detach()
phy_remove()
phy_leds_unregister()
led_classdev_unregister()
led_trigger_set()
netdev_trigger_deactivate()
unregister_netdevice_notifier()
rtnl_lock()
There is a corresponding deadlock on the open/register side of things
(and that one is reported by lockdep), but it requires a race while this
one is deterministic.
Generic PHYs do not support LEDs anyway, so don't bother registering
them.
Fixes: 01e5b728e9e4 ("net: phy: Add a binding for PHY LEDs")
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20250707195803.666097-1-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As described in a previous commit [1], Lion's patch [2] revealed an ancient
bug in the qdisc API. Whenever a user tries to add a qdisc to an
invalid parent (not a class, root, or ingress qdisc), the qdisc API will
detect this after qdisc_create is called. Some qdiscs (like fq_codel, pie,
and sfq) call functions (on their init callback) which assume the parent is
valid, so qdisc_create itself may have caused a NULL pointer dereference in
such cases.
This commit creates 3 TDC tests that attempt to add fq_codel, pie and sfq
qdiscs to invalid parents
- Attempts to add an fq_codel qdisc to an hhf qdisc parent
- Attempts to add a pie qdisc to a drr qdisc parent
- Attempts to add an sfq qdisc to an inexistent hfsc classid (which would
belong to a valid hfsc qdisc)
[1] https://lore.kernel.org/all/20250707210801.372995-1-victor@mojatatu.com/
[2] https://lore.kernel.org/netdev/d912cbd7-193b-4269-9857-525bee8bbb6a@gmail.com/
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250712145035.705156-1-victor@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Starting with Rust 1.89.0 (expected 2025-08-07), the Rust compiler fails
to build the `rusttest` target due to undefined references such as:
kernel...-cgu.0:(.text....+0x116): undefined reference to
`rust_helper_kunit_get_current_test'
Moreover, tooling like `modpost` gets confused:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/nova/nova.o
ERROR: modpost: missing MODULE_LICENSE() in drivers/gpu/nova-core/nova_core.o
The reason behind both issues is that the Rust compiler will now [1]
treat `#[used]` as `#[used(linker)]` instead of `#[used(compiler)]`
for our targets. This means that the retain section flag (`R`,
`SHF_GNU_RETAIN`) will be used and that they will be marked as `unique`
too, with different IDs. In turn, that means we end up with undefined
references that did not get discarded in `rusttest` and that multiple
`.modinfo` sections are generated, which confuse tooling like `modpost`
because they only expect one.
Thus start using `#[used(compiler)]` to keep the previous behavior
and to be explicit about what we want. Sadly, it is an unstable feature
(`used_with_arg`) [2] -- we will talk to upstream Rust about it. The good
news is that it has been available for a long time (Rust >= 1.60) [3].
The changes should also be fine for previous Rust versions, since they
behave the same way as before [4].
Alternatively, we could use `#[no_mangle]` or `#[export_name = ...]`
since those still behave like `#[used(compiler)]`, but of course it is
not really what we want to express, and it requires other changes to
avoid symbol conflicts.
Cc: David Wood <david@davidtw.co>
Cc: Wesley Wiser <wwiser@gmail.com>
Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs).
Link: https://github.com/rust-lang/rust/pull/140872 [1]
Link: https://github.com/rust-lang/rust/issues/93798 [2]
Link: https://github.com/rust-lang/rust/pull/91504 [3]
Link: https://godbolt.org/z/sxzWTMfzW [4]
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Björn Roy Baron <bjorn3_gh@protonmail.com>
Link: https://lore.kernel.org/r/20250712160103.1244945-3-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Starting with Rust 1.89.0 (expected 2025-08-07), under
`CONFIG_RUST_DEBUG_ASSERTIONS=y`, `objtool` may report:
rust/kernel.o: warning: objtool: _R..._6kernel4pageNtB5_4Page8read_raw()
falls through to next function _R..._6kernel4pageNtB5_4Page9write_raw()
(and many others) due to calls to the `noreturn` symbol:
core::panicking::panic_nounwind_fmt
Thus add the mangled one to the list so that `objtool` knows it is
actually `noreturn`.
See commit 56d680dd23c3 ("objtool/rust: list `noreturn` Rust functions")
for more details.
Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs).
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250712160103.1244945-2-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
When the GPU scheduler was ported to using a struct for its
initialization parameters, it was overlooked that panfrost creates a
distinct workqueue for timeout handling.
The pointer to this new workqueue is not initialized to the struct,
resulting in NULL being passed to the scheduler, which then uses the
system_wq for timeout handling.
Set the correct workqueue to the init args struct.
Cc: stable@vger.kernel.org # 6.15+
Fixes: 796a9f55a8d1 ("drm/sched: Use struct for drm_sched_init() params")
Reported-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Closes: https://lore.kernel.org/dri-devel/b5d0921c-7cbf-4d55-aa47-c35cd7861c02@igalia.com/
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20250709102957.100849-2-phasta@kernel.org
zcrx shouldn't be so frivolous about cutting a dmabuf sgtable and taking
a subrange into it, the dmabuf layer might be not expecting that. It
shouldn't be a problem for now, but since the zcrx dmabuf support is new
and there shouldn't be any real users, let's play safe and reject user
provided ranges into dmabufs. Also, it shouldn't be needed as userspace
should size them appropriately.
Fixes: a5c98e9424573 ("io_uring/zcrx: dmabuf backed zerocopy receive")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/be899f1afed32053eb2e2079d0da241514674aca.1752443579.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The command word members of struct nvme_common_command are __le32 type,
so use helper le32_to_cpu() to read them properly.
Fixes: 9f079dda1433 ("nvme: allow passthru cmd error logging")
Signed-off-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Alan Adamson <alan.adamson@oracle.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
When inserting a namespace into the controller's namespace list, the
function uses list_add_rcu() when the namespace is inserted in the middle
of the list, but falls back to a regular list_add() when adding at the
head of the list.
This inconsistency could lead to race conditions during concurrent
access, as users might observe a partially updated list. Fix this by
consistently using list_add_rcu() in both code paths to ensure proper
RCU protection throughout the entire function.
Fixes: be647e2c76b2 ("nvme: use srcu for iterating namespace list")
Signed-off-by: Zheng Qixing <zhengqixing@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
The current SPI framework does not verify if the SPI device supports
8 IO mode when doing an 8-bit transfer. This patch adds a check to
ensure that if the transfer tx_nbits or rx_nbits is 8, the SPI mode must
support 8 IO. If not, an error is returned, preventing undefined behavior.
Fixes: d6a711a898672 ("spi: Fix OCTAL mode support")
Cc: stable@vger.kernel.org
Signed-off-by: Cheng Ming Lin <chengminglin@mxic.com.tw>
Link: https://patch.msgid.link/20250714031023.504752-1-linchengming884@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This reverts commit 465b9ee0ee7bc268d7f261356afd6c4262e48d82.
Such notifications fit better into core or nfnetlink_hook code,
following the NFNL_MSG_HOOK_GET message format.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Its a kernel implementation detail, at least at this time:
We can later decide to revert this patch if there is a compelling
reason, but then we should also remove the ifdef that prevents exposure
of ip_conntrack_status enum IPS_NAT_CLASH value in the uapi header.
Clash entries are not included in dumps (true for both old /proc
and ctnetlink) either. So for now exclude the clash bit when dumping.
Fixes: 7e5c6aa67e6f ("netfilter: nf_tables: add packets conntrack state to debug trace info")
Link: https://lore.kernel.org/netfilter-devel/aGwf3dCggwBlRKKC@strlen.de/
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The selftest doesn't cover this error path:
scratch = *raw_cpu_ptr(m->scratch);
if (unlikely(!scratch)) { // here
cover this too.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Previous patch added a new clash resolution test case.
Also use this during conntrack resize stress test in addition
to icmp ping flood.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Add a dedicated test to exercise conntrack clash resolution path.
Test program emits 128 identical udp packets in parallel, then reads
back replies from socat echo server.
Also check (via conntrack -S) that the clash path was hit at least once.
Due to the racy nature of the test its possible that despite the
threaded program all packets were processed in-order or on same cpu,
emit a SKIP warning in this case.
Two tests are added:
- one to test the simpler, non-nat case
- one to exercise clash resolution where packets
might have different nat transformations attached to them.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Extend the resize test:
- continuously dump table both via /proc and ctnetlink interfaces while
table is resized in a loop.
- if socat is available, send udp packets in additon to ping requests.
- increase/decrease the icmp and udp timeouts while resizes are happening.
This makes sure we also exercise the 'ct has expired' check that happens
on conntrack lookup.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The Lenovo Yoga Book 9i GenX has the wrong values in the cirrus,dev-index
_DSD property. Add a fixup for this model to ignore the property and
hardcode the index from the I2C bus address.
The error in the cirrus,dev-index property would prevent the second amp
instance from probing. The component binding would never see all the
required instances and so there would not be a binding between
patch_realtek.c and the cs35l56 driver.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reported-by: Brian Howard <blhoward2@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220228
Link: https://patch.msgid.link/20250714110154.204740-1-rf@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Currently cpu hotplug with the PREEMPT_RT option set in the kernel is
not supported because the underlying generic power domain functions
used in the cpu hotplug callbacks are incompatible from a lock point
of view. This situation prevents the suspend to idle to reach the
deepest idle state for the "cluster" as identified in the
undermentioned commit.
Use the compatible ones when PREEMPT_RT is enabled and remove the
boolean disabling the hotplug callbacks with this option.
With this change the platform can reach the deepest idle state
allowing at suspend time to consume less power.
Tested-on Lenovo T14s with the following script:
echo 0 > /sys/devices/system/cpu/cpu3/online
BEFORE=$(cat /sys/kernel/debug/pm_genpd/power-domain-cpu-cluster0/idle_states | grep S0 | awk '{ print $3 }') ;
rtcwake -s 1 -m mem;
AFTER=$(cat /sys/kernel/debug/pm_genpd/power-domain-cpu-cluster0/idle_states | grep S0 | awk '{ print $3 }');
if [ $BEFORE -lt $AFTER ]; then
echo "Test successful"
else
echo "Test failed"
fi
echo 1 > /sys/devices/system/cpu/cpu3/online
Fixes: 1c4b2932bd62 ("cpuidle: psci: Enable the hierarchical topology for s2idle on PREEMPT_RT")
Cc: Raghavendra Kakarla <quic_rkakarla@quicinc.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250709154728.733920-1-daniel.lezcano@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Support mute LED on keyboard for Lenovo Yoga series products with
Realtek ALC287 chipset.
Tested on Lenovo Slim Pro 7 14APH8.
[ slight comment cleanup by tiwai ]
Signed-off-by: Jackie Dong <xy-jackie@139.com>
Link: https://patch.msgid.link/20250714094655.4657-1-xy-jackie@139.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
David Howells <dhowells@redhat.com> says:
Here are a couple of patches that fix the use of fscaching with ceph:
(1) Fix the read collector to mark the write request that it creates to copy
data to the cache with NETFS_RREQ_OFFLOAD_COLLECTION so that it will run
the write collector on a workqueue as it's meant to run in the background
and the app isn't going to wait for it.
(2) Fix the read collector to wake up the copy-to-cache write request after
it sets NETFS_RREQ_ALL_QUEUED if the write request doesn't have any
subrequests left on it. ALL_QUEUED indicates that there won't be any
more subreqs coming and the collector should clean up - except that an
event is needed to trigger that, but it only gets events from subreq
termination and so the last event can beat us to setting ALL_QUEUED.
* patches from https://lore.kernel.org/20250711151005.2956810-1-dhowells@redhat.com:
netfs: Fix race between cache write completion and ALL_QUEUED being set
netfs: Fix copy-to-cache so that it performs collection with ceph+fscache
Link: https://lore.kernel.org/20250711151005.2956810-1-dhowells@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
When netfslib is issuing subrequests, the subrequests start processing
immediately and may complete before we reach the end of the issuing
function. At the end of the issuing function we set NETFS_RREQ_ALL_QUEUED
to indicate to the collector that we aren't going to issue any more subreqs
and that it can do the final notifications and cleanup.
Now, this isn't a problem if the request is synchronous
(NETFS_RREQ_OFFLOAD_COLLECTION is unset) as the result collection will be
done in-thread and we're guaranteed an opportunity to run the collector.
However, if the request is asynchronous, collection is primarily triggered
by the termination of subrequests queuing it on a workqueue. Now, a race
can occur here if the app thread sets ALL_QUEUED after the last subrequest
terminates.
This can happen most easily with the copy2cache code (as used by Ceph)
where, in the collection routine of a read request, an asynchronous write
request is spawned to copy data to the cache. Folios are added to the
write request as they're unlocked, but there may be a delay before
ALL_QUEUED is set as the write subrequests may complete before we get
there.
If all the write subreqs have finished by the ALL_QUEUED point, no further
events happen and the collection never happens, leaving the request
hanging.
Fix this by queuing the collector after setting ALL_QUEUED. This is a bit
heavy-handed and it may be sufficient to do it only if there are no extant
subreqs.
Also add a tracepoint to cross-reference both requests in a copy-to-request
operation and add a trace to the netfs_rreq tracepoint to indicate the
setting of ALL_QUEUED.
Fixes: e2d46f2ec332 ("netfs: Change the read result collector to only use one work item")
Reported-by: Max Kellermann <max.kellermann@ionos.com>
Link: https://lore.kernel.org/r/CAKPOu+8z_ijTLHdiCYGU_Uk7yYD=shxyGLwfe-L7AV3DhebS3w@mail.gmail.com/
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/20250711151005.2956810-3-dhowells@redhat.com
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
cc: Paulo Alcantara <pc@manguebit.org>
cc: Viacheslav Dubeyko <slava@dubeyko.com>
cc: Alex Markuze <amarkuze@redhat.com>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: netfs@lists.linux.dev
cc: ceph-devel@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: stable@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
The netfs copy-to-cache that is used by Ceph with local caching sets up a
new request to write data just read to the cache. The request is started
and then left to look after itself whilst the app continues. The request
gets notified by the backing fs upon completion of the async DIO write, but
then tries to wake up the app because NETFS_RREQ_OFFLOAD_COLLECTION isn't
set - but the app isn't waiting there, and so the request just hangs.
Fix this by setting NETFS_RREQ_OFFLOAD_COLLECTION which causes the
notification from the backing filesystem to put the collection onto a work
queue instead.
Fixes: e2d46f2ec332 ("netfs: Change the read result collector to only use one work item")
Reported-by: Max Kellermann <max.kellermann@ionos.com>
Link: https://lore.kernel.org/r/CAKPOu+8z_ijTLHdiCYGU_Uk7yYD=shxyGLwfe-L7AV3DhebS3w@mail.gmail.com/
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/20250711151005.2956810-2-dhowells@redhat.com
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
cc: Paulo Alcantara <pc@manguebit.org>
cc: Viacheslav Dubeyko <slava@dubeyko.com>
cc: Alex Markuze <amarkuze@redhat.com>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: netfs@lists.linux.dev
cc: ceph-devel@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: stable@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
The commit e6fe3f422be1 ("sched: Make multiple runqueue task counters
32-bit") changed nr_uninterruptible to an unsigned int. But the
nr_uninterruptible values for each of the CPU runqueues can grow to
large numbers, sometimes exceeding INT_MAX. This is valid, if, over
time, a large number of tasks are migrated off of one CPU after going
into an uninterruptible state. Only the sum of all nr_interruptible
values across all CPUs yields the correct result, as explained in a
comment in kernel/sched/loadavg.c.
Change the type of nr_uninterruptible back to unsigned long to prevent
overflows, and thus the miscalculation of load average.
Fixes: e6fe3f422be1 ("sched: Make multiple runqueue task counters 32-bit")
Signed-off-by: Aruna Ramakrishna <aruna.ramakrishna@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20250709173328.606794-1-aruna.ramakrishna@oracle.com
[into #fixes, unless somebody objects]
Lifetime of new_dn_mark is controlled by that of its ->fsn_mark,
pointed to by new_fsn_mark. Unfortunately, a failure exit had
been inserted between the allocation of new_dn_mark and the
call of fsnotify_init_mark(), ending up with a leak.
Fixes: 1934b212615d "file: reclaim 24 bytes from f_owner"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Link: https://lore.kernel.org/20250712171843.GB1880847@ZenIV
Signed-off-by: Christian Brauner <brauner@kernel.org>
omap: add missing error check and fix PM disable in probe error
path.
stm32: unmap DMA buffer on transfer failure and use correct
device when mapping and unmapping during transfers.
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Merge tag 'i2c-host-fixes-6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-current
i2c-host-fixes for v6.16-rc6
omap: add missing error check and fix PM disable in probe error
path.
stm32: unmap DMA buffer on transfer failure and use correct
device when mapping and unmapping during transfers.
When a parent lease key is passed to the server during a create operation
while holding a directory lease, the server may not send a lease break to
the client. In such cases, it becomes the client’s responsibility to
ensure cache consistency.
This led to a problem where directory listings (e.g., `ls` or `readdir`)
could return stale results after a new file is created.
eg:
ls /mnt/share/
touch /mnt/share/file1
ls /mnt/share/
In this scenario, the final `ls` may not show `file1` due to the stale
directory cache.
For now, fix this by marking the cached directory as invalid if using
the parent lease key during create, and explicitly closing the cached
directory after successful file creation.
Fixes: 037e1bae588eacf ("smb: client: use ParentLeaseKey in cifs_do_create")
Signed-off-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
The CVE-2024-50047 fix removed asynchronous crypto handling from
crypt_message(), assuming all crypto operations are synchronous.
However, when hardware crypto accelerators are used, this can cause
use-after-free crashes:
crypt_message()
// Allocate the creq buffer containing the req
creq = smb2_get_aead_req(..., &req);
// Async encryption returns -EINPROGRESS immediately
rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
// Free creq while async operation is still in progress
kvfree_sensitive(creq, ...);
Hardware crypto modules often implement async AEAD operations for
performance. When crypto_aead_encrypt/decrypt() returns -EINPROGRESS,
the operation completes asynchronously. Without crypto_wait_req(),
the function immediately frees the request buffer, leading to crashes
when the driver later accesses the freed memory.
This results in a use-after-free condition when the hardware crypto
driver later accesses the freed request structure, leading to kernel
crashes with NULL pointer dereferences.
The issue occurs because crypto_alloc_aead() with mask=0 doesn't
guarantee synchronous operation. Even without CRYPTO_ALG_ASYNC in
the mask, async implementations can be selected.
Fix by restoring the async crypto handling:
- DECLARE_CRYPTO_WAIT(wait) for completion tracking
- aead_request_set_callback() for async completion notification
- crypto_wait_req() to wait for operation completion
This ensures the request buffer isn't freed until the crypto operation
completes, whether synchronous or asynchronous, while preserving the
CVE-2024-50047 fix.
Fixes: b0abcd65ec54 ("smb: client: fix UAF in async decryption")
Link: https://lore.kernel.org/all/8b784a13-87b0-4131-9ff9-7a8993538749@huaweicloud.com/
Cc: stable@vger.kernel.org
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Wang Zhaolong <wangzhaolong@huaweicloud.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
A race condition can occur in cifs_oplock_break() leading to a
use-after-free of the cinode structure when unmounting:
cifs_oplock_break()
_cifsFileInfo_put(cfile)
cifsFileInfo_put_final()
cifs_sb_deactive()
[last ref, start releasing sb]
kill_sb()
kill_anon_super()
generic_shutdown_super()
evict_inodes()
dispose_list()
evict()
destroy_inode()
call_rcu(&inode->i_rcu, i_callback)
spin_lock(&cinode->open_file_lock) <- OK
[later] i_callback()
cifs_free_inode()
kmem_cache_free(cinode)
spin_unlock(&cinode->open_file_lock) <- UAF
cifs_done_oplock_break(cinode) <- UAF
The issue occurs when umount has already released its reference to the
superblock. When _cifsFileInfo_put() calls cifs_sb_deactive(), this
releases the last reference, triggering the immediate cleanup of all
inodes under RCU. However, cifs_oplock_break() continues to access the
cinode after this point, resulting in use-after-free.
Fix this by holding an extra reference to the superblock during the
entire oplock break operation. This ensures that the superblock and
its inodes remain valid until the oplock break completes.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=220309
Fixes: b98749cac4a6 ("CIFS: keep FileInfo handle live during oplock break")
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Wang Zhaolong <wangzhaolong@huaweicloud.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Previously, only split rbios allocated in io_read.c would be removed
from the async obj list.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
It is currently possible to configure a kernel with all Intel SoC
configs as loadable modules, but the board config as built-in. This
causes a link failure in the reference to the snd_soc_sof.ko module:
x86_64-linux-ld: sound/soc/intel/boards/sof_rt5682.o: in function `sof_rt5682_hw_params':
sof_rt5682.c:(.text+0x1f9): undefined reference to `sof_dai_get_mclk'
x86_64-linux-ld: sof_rt5682.c:(.text+0x234): undefined reference to `sof_dai_get_bclk'
x86_64-linux-ld: sound/soc/intel/boards/sof_rt5682.o: in function `sof_rt5682_codec_init':
sof_rt5682.c:(.text+0x3e0): undefined reference to `sof_dai_get_mclk'
x86_64-linux-ld: sound/soc/intel/boards/sof_cs42l42.o: in function `sof_cs42l42_hw_params':
sof_cs42l42.c:(.text+0x2a): undefined reference to `sof_dai_get_bclk'
x86_64-linux-ld: sound/soc/intel/boards/sof_nau8825.o: in function `sof_nau8825_hw_params':
sof_nau8825.c:(.text+0x7f): undefined reference to `sof_dai_get_bclk'
x86_64-linux-ld: sound/soc/intel/boards/sof_da7219.o: in function `da7219_codec_init':
sof_da7219.c:(.text+0xbf): undefined reference to `sof_dai_get_mclk'
x86_64-linux-ld: sound/soc/intel/boards/sof_maxim_common.o: in function `max_98373_hw_params':
sof_maxim_common.c:(.text+0x6f9): undefined reference to `sof_dai_get_tdm_slots'
x86_64-linux-ld: sound/soc/intel/boards/sof_realtek_common.o: in function `rt1015_hw_params':
sof_realtek_common.c:(.text+0x54c): undefined reference to `sof_dai_get_bclk'
x86_64-linux-ld: sound/soc/intel/boards/sof_realtek_common.o: in function `rt1308_hw_params':
sof_realtek_common.c:(.text+0x702): undefined reference to `sof_dai_get_mclk'
x86_64-linux-ld: sound/soc/intel/boards/sof_cirrus_common.o: in function `cs35l41_hw_params':
sof_cirrus_common.c:(.text+0x2f): undefined reference to `sof_dai_get_bclk'
Add an optional dependency on SND_SOC_SOF_INTEL_COMMON, to ensure that whenever
the SOF support is in a loadable module, none of the board code can be built-in.
This may be be a little heavy-handed, but I also don't see a reason why one would
want the boards to be built-in but not the SoC, so it shouldn't actually cause
any usability problems.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20250709145626.64125-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
- Add a missing property to the Mediatek MT8188 clk binding to
keep binding checks happy
- Avoid an OOB by setting the correct number of parents in
dispmix_csr_clk_dev_data
- Allocate clk_hw structs early in probe to avoid an ordering
issue where clk_parent_data points to an unallocated clk_hw
when the child clk is registered before the parent clk in the
SCMI clk driver
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Fixes for a few clk drivers and bindings:
- Add a missing property to the Mediatek MT8188 clk binding to
keep binding checks happy
- Avoid an OOB by setting the correct number of parents in
dispmix_csr_clk_dev_data
- Allocate clk_hw structs early in probe to avoid an ordering
issue where clk_parent_data points to an unallocated clk_hw
when the child clk is registered before the parent clk in the
SCMI clk driver
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
dt-bindings: clock: mediatek: Add #reset-cells property for MT8188
clk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data
clk: scmi: Handle case where child clocks are initialized before their parents
- Allow hugetlb PMD sharing only on 64-bit as it doesn't make a whole lotta
sense on 32-bit
- Add fixes for a misconfigured AMD Zen2 client which wasn't even supposed to
run Linux
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Merge tag 'x86_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Update Kirill's email address
- Allow hugetlb PMD sharing only on 64-bit as it doesn't make a whole
lotta sense on 32-bit
- Add fixes for a misconfigured AMD Zen2 client which wasn't even
supposed to run Linux
* tag 'x86_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Update Kirill Shutemov's email address for TDX
x86/mm: Disable hugetlb page table sharing on 32-bit
x86/CPU/AMD: Disable INVLPGB on Zen2
x86/rdrand: Disable RDSEED on AMD Cyan Skillfish
- Fix a randconfig build failure in armada-370-xp irqchip
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Merge tag 'irq_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Fix a case of recursive locking in the MSI code
- Fix a randconfig build failure in armada-370-xp irqchip
* tag 'irq_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/irq-msi-lib: Fix build with PCI disabled
PCI/MSI: Prevent recursive locking in pci_msix_write_tph_tag()
