commit 68bfdc8dc0a1a ("drm/amd: Keep display off while going into S4")
attempted to keep displays off during the S4 sequence by not resuming
display IP. This however leads to hangs because DRM clients such as the
console can try to access registers and cause a hang.
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4155 Fixes: 68bfdc8dc0a1a ("drm/amd: Keep display off while going into S4") Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Link: https://lore.kernel.org/r/20250522141328.115095-1-mario.limonciello@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit e485502c37b097b0bd773baa7e2741bf7bd2909a) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Multiple pointers in struct cifs_search_info (ntwrk_buf_start,
srch_entries_start, and last_entry) point to the same allocated buffer.
However, when freeing this buffer, only ntwrk_buf_start was set to NULL,
while the other pointers remained pointing to freed memory.
This is defensive programming to prevent potential issues with stale
pointers. While the active UAF vulnerability is fixed by the previous
patch, this change ensures consistent pointer state and more robust error
handling.
Signed-off-by: Wang Zhaolong <wangzhaolong1@huawei.com> Cc: stable@vger.kernel.org Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The two alarm LEDs of on the uDPU board are stopped working since
commit 78efa53e715e ("leds: Init leds class earlier").
The LEDs are driven by the GPIO{15,16} pins of the North Bridge
GPIO controller. These pins are part of the 'spi_quad' pin group
for which the 'spi' function is selected via the default pinctrl
state of the 'spi' node. This is wrong however, since in order to
allow controlling the LEDs, the pins should use the 'gpio' function.
Before the commit mentined above, the 'spi' function is selected
first by the pinctrl core before probing the spi driver, but then
it gets overridden to 'gpio' implicitly via the
devm_gpiod_get_index_optional() call from the 'leds-gpio' driver.
After the commit, the LED subsystem gets initialized before the
SPI subsystem, so the function of the pin group remains 'spi'
which in turn prevents controlling of the LEDs.
Despite the change of the initialization order, the root cause is
that the pinctrl state definition is wrong since its initial commit 0d45062cfc89 ("arm64: dts: marvell: Add device tree for uDPU board"),
To fix the problem, override the function in the 'spi_quad_pins'
node to 'gpio' and move the pinctrl state definition from the
'spi' node into the 'leds' node.
Cc: stable@vger.kernel.org # needs adjustment for < 6.1 Fixes: 0d45062cfc89 ("arm64: dts: marvell: Add device tree for uDPU board") Signed-off-by: Gabor Juhos <j4g8y7@gmail.com> Signed-off-by: Imre Kaloz <kaloz@openwrt.org> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a race condition in the readdir concurrency process, which may
access the rsp buffer after it has been released, triggering the
following KASAN warning.
==================================================================
BUG: KASAN: slab-use-after-free in cifs_fill_dirent+0xb03/0xb60 [cifs]
Read of size 4 at addr ffff8880099b819c by task a.out/342975
The buggy address belongs to the object at ffff8880099b8000
which belongs to the cache cifs_request of size 16588
The buggy address is located 412 bytes inside of
freed 16588-byte region [ffff8880099b8000, ffff8880099bc0cc)
When DP connected to a device with HDR capability,
the hdr structure was filled.Then connected to another
sink device without hdr capability, but the hdr info
still exist.
Fixes: e85959d6cbe0 ("drm: Parse HDR metadata info from EDID") Cc: <stable@vger.kernel.org> # v5.3+ Signed-off-by: "feijuan.li" <feijuan.li@samsung.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Link: https://lore.kernel.org/r/20250514063511.4151780-1-feijuan.li@samsung.com Signed-off-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The tj_max value obtained from the Intel TCC library are in Celsius,
whereas the thermal subsystem operates in milli-Celsius.
This discrepancy leads to incorrect trip temperature calculations.
Fix bogus trip temperature by converting tj_max to milli-Celsius Unit.
Fixes: 8ef0ca4a177d ("Merge back other thermal control material for 6.3.") Signed-off-by: Zhang Rui <rui.zhang@intel.com> Reported-by: zhang ning <zhangn1985@outlook.com> Closes: https://lore.kernel.org/all/TY2PR01MB3786EF0FE24353026293F5ACCD97A@TY2PR01MB3786.jpnprd01.prod.outlook.com/ Tested-by: zhang ning <zhangn1985@outlook.com> Cc: 6.3+ <stable@vger.kernel.org> # 6.3+ Link: https://patch.msgid.link/20250519070901.1031233-1-rui.zhang@intel.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the 'buf' array received from the user contains an empty string, the
'length' variable will be zero. Accessing the 'buf' array element with
index 'length - 1' will result in a buffer overflow.
Add a check for an empty string.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: e8a60aa7404b ("platform/x86: Introduce support for Systems Management Driver over WMI for Dell Systems") Cc: stable@vger.kernel.org Signed-off-by: Vladimir Moskovkin <Vladimir.Moskovkin@kaspersky.com> Link: https://lore.kernel.org/r/39973642a4f24295b4a8fad9109c5b08@kaspersky.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The error checking for of_count_phandle_with_args() does not handle
negative error codes correctly. The problem is that "index" is a u32 so
in the condition "if (index >= num_domains)" negative error codes stored
in "num_domains" are type promoted to very high positive values and
"index" is always going to be valid.
Test for negative error codes first and then test if "index" is valid.
Fixes: 3ccf3f0cd197 ("PM / Domains: Enable genpd_dev_pm_attach_by_id|name() for single PM domain") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/aBxPQ8AI8N5v-7rL@stanley.mountain Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add a new struct for platform data for the ti,am62-sdhci compatible to
apply additional quirks, namely "SDHCI_QUIRK2_SUPPRESS_V1P8_ENA", to
host controllers with am62 compatible.
Note, the fix was originally introduced by commit 941a7abd4666
("mmc: sdhci_am654: Add sdhci_am654_start_signal_voltage_switch") but was
found to be applied too broadly and had to be reverted.
This fixes MMC init failures seen across am62x boards.
Currently, when device mtu is updated, vmxnet3 updates netdev mtu, quiesces
the device and then reactivates it for the ESXi to know about the new mtu.
So, technically the OS stack can start using the new mtu before ESXi knows
about the new mtu.
This can lead to issues for TSO packets which use mss as per the new mtu
configured. This patch fixes this issue by moving the mtu write after
device quiesce.
Cc: stable@vger.kernel.org Fixes: d1a890fa37f2 ("net: VMware virtual Ethernet NIC driver: vmxnet3") Signed-off-by: Ronak Doshi <ronak.doshi@broadcom.com> Acked-by: Guolin Yang <guolin.yang@broadcom.com>
Changes v1-> v2:
Moved MTU write after destroy of rx rings Link: https://patch.msgid.link/20250515190457.8597-1-ronak.doshi@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The pointer arithmentic for accessing the tail tag only works
for linear skbs.
For nonlinear skbs, it reads uninitialized memory inside the
skb headroom, essentially randomizing the tag. I have observed
it gets set to 6 most of the time.
Example where ksz9477_rcv thinks that the packet from port 1 comes from port 6
(which does not exist for the ksz9896 that's in use), dropping the packet.
Debug prints added by me (not included in this patch):
Call skb_linearize before trying to access the tag.
This patch fixes ksz9477_rcv which is used by the ksz9896 I have at
hand, and also applies the same fix to ksz8795_rcv which seems to have
the same problem.
Signed-off-by: Jakob Unterwurzacher <jakob.unterwurzacher@cherry.de> CC: stable@vger.kernel.org Fixes: 016e43a26bab ("net: dsa: ksz: Add KSZ8795 tag code") Fixes: 8b8010fb7876 ("dsa: add support for Microchip KSZ tail tagging") Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Link: https://patch.msgid.link/20250515072920.2313014-1-jakob.unterwurzacher@cherry.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If a shorter than assumed transfer was seen, a partial buffer will have
been filled. For that case it isn't sane to attempt to fill more into
the bundle before posting a completion, as that will cause a gap in
the received data.
Check if the iterator has hit zero and only allow to continue a bundle
operation if that is the case.
Also ensure that for putting finished buffers, only the current transfer
is accounted. Otherwise too many buffers may be put for a short transfer.
The functions kvaser_pciefd_start_xmit() and
kvaser_pciefd_handle_ack_packet() raced to stop/wake TX queues and
get/put echo skbs, as kvaser_pciefd_can->echo_lock was only ever taken
when transmitting and KCAN_TX_NR_PACKETS_CURRENT gets decremented
prior to handling of ACKs. E.g., this caused the following error:
can_put_echo_skb: BUG! echo_skb 5 is occupied!
Instead, use the synchronization helpers in netdev_queues.h. As those
piggyback on BQL barriers, start updating in-flight packets and bytes
counts as well.
Cc: stable@vger.kernel.org Signed-off-by: Axel Forsman <axfo@kvaser.com> Tested-by: Jimmy Assarsson <extja@kvaser.com> Reviewed-by: Jimmy Assarsson <extja@kvaser.com> Link: https://patch.msgid.link/20250520114332.8961-3-axfo@kvaser.com Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Going bus-off on a channel doing RX could result in dropped packets.
As netif_running() gets cleared before the channel abort procedure,
the handling of any last RDATA packets would see netif_rx() return
non-zero to signal a dropped packet. kvaser_pciefd_read_buffer() dealt
with this "error" by breaking out of processing the remaining DMA RX
buffer.
Only return an error from kvaser_pciefd_read_buffer() due to packet
corruption, otherwise handle it internally.
Cc: stable@vger.kernel.org Signed-off-by: Axel Forsman <axfo@kvaser.com> Tested-by: Jimmy Assarsson <extja@kvaser.com> Reviewed-by: Jimmy Assarsson <extja@kvaser.com> Link: https://patch.msgid.link/20250520114332.8961-4-axfo@kvaser.com Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For SOCK_STREAM sockets, if user buffer size (len) is less
than skb size (skb->len), the remaining data from skb
will be lost after calling kfree_skb().
To fix this, move the statement for partial reading
above skb deletion.
Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org)
Fixes: 30a584d944fb ("[LLX]: SOCK_DGRAM interface fixes") Cc: stable@vger.kernel.org Signed-off-by: Ilia Gavrilov <Ilia.Gavrilov@infotecs.ru> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The PCM OSS layer tries to clear the buffer with the silence data at
initialization (or reconfiguration) of a stream with the explicit call
of snd_pcm_format_set_silence() with runtime->dma_area. But this may
lead to a UAF because the accessed runtime->dma_area might be freed
concurrently, as it's performed outside the PCM ops.
For avoiding it, move the code into the PCM core and perform it inside
the buffer access lock, so that it won't be changed during the
operation.
The partial matching of DAI widget to link names, can cause problems if
one of the widget names is a substring of another. E.g. with names
"Foo1" and Foo10", it's not possible to correctly link up "Foo1".
Modify the logic so that if multiple DAI links match the widget stream
name, prioritize a full match if one is found.
Fixes: fe88788779fc ("ASoC: SOF: topology: Use partial match for connecting DAI link and DAI widget") Link: https://github.com/thesofproject/linux/issues/5308 Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Cc: stable@vger.kernel.org Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com> Link: https://patch.msgid.link/20250509085318.13936-1-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The header.numid is set to scontrol->comp_id in bytes_ext_get and it is
ignored during bytes_ext_put.
The use of comp_id is not quite great as it is kernel internal
identification number.
Set the header.numid to SOF_CTRL_CMD_BINARY during get and validate the
numid during put to provide consistent and compatible identification
number as IPC3.
For IPC4 existing tooling also ignored the numid but with the use of
SOF_CTRL_CMD_BINARY the different handling of the blobs can be dropped,
providing better user experience.
Reported-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com> Closes: https://github.com/thesofproject/linux/issues/5282 Fixes: a062c8899fed ("ASoC: SOF: ipc4-control: Add support for bytes control get and put") Cc: stable@vger.kernel.org Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com> Reviewed-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com> Link: https://patch.msgid.link/20250509085633.14930-1-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When the procfs content is generated for a bcm_op which is in the process
to be removed the procfs output might show unreliable data (UAF).
As the removal of bcm_op's is already implemented with rcu handling this
patch adds the missing rcu_read_lock() and makes sure the list entries
are properly removed under rcu protection.
Fixes: f1b4e32aca08 ("can: bcm: use call_rcu() instead of costly synchronize_rcu()") Reported-by: Anderson Nascimento <anderson@allelesecurity.com> Suggested-by: Anderson Nascimento <anderson@allelesecurity.com> Tested-by: Anderson Nascimento <anderson@allelesecurity.com> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Link: https://patch.msgid.link/20250519125027.11900-2-socketcan@hartkopp.net Cc: stable@vger.kernel.org # >= 5.4 Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The CAN broadcast manager (CAN BCM) can send a sequence of CAN frames via
hrtimer. The content and also the length of the sequence can be changed
resp reduced at runtime where the 'currframe' counter is then set to zero.
Although this appeared to be a safe operation the updates of 'currframe'
can be triggered from user space and hrtimer context in bcm_can_tx().
Anderson Nascimento created a proof of concept that triggered a KASAN
slab-out-of-bounds read access which can be prevented with a spin_lock_bh.
At the rework of bcm_can_tx() the 'count' variable has been moved into
the protected section as this variable can be modified from both contexts
too.
Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol") Reported-by: Anderson Nascimento <anderson@allelesecurity.com> Tested-by: Anderson Nascimento <anderson@allelesecurity.com> Reviewed-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Link: https://patch.msgid.link/20250519125027.11900-1-socketcan@hartkopp.net Cc: stable@vger.kernel.org Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Allows slcan to receive short messages (typically errors) from the serial
interface.
When error support was added to slcan protocol in b32ff4668544e1333b694fcc7812b2d7397b4d6a ("can: slcan: extend the protocol
with error info") the minimum valid message size changed from 5 (minimum
standard can frame tIII0) to 3 ("e1a" is a valid protocol message, it is
one of the examples given in the comments for slcan_bump_err() ), but the
check for minimum message length prodicating all decoding was not adjusted.
This makes short error messages discarded and error frames not being
generated.
This patch changes the minimum length to the new minimum (3 characters,
excluding terminator, is now a valid message).
Signed-off-by: Carlos Sanchez <carlossanchez@geotab.com> Fixes: b32ff4668544 ("can: slcan: extend the protocol with error info") Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Link: https://patch.msgid.link/20250520102305.1097494-1-carlossanchez@geotab.com Cc: stable@vger.kernel.org Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A recent patch that addressed a UAF introduced a reference count leak:
the parallel_data refcount is incremented unconditionally, regardless
of the return value of queue_work(). If the work item is already queued,
the incremented refcount is never decremented.
Fix this by checking the return value of queue_work() and decrementing
the refcount when necessary.
If accept(2) is called on socket type algif_hash with
MSG_MORE flag set and crypto_ahash_import fails,
sk2 is freed. However, it is also freed in af_alg_release,
leading to slab-use-after-free error.
Fixes: fe869cdb89c9 ("crypto: algif_hash - User-space interface for hash operations") Cc: <stable@vger.kernel.org> Signed-off-by: Ivan Pravdin <ipravdin.official@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
With UBSAN enabled, we're getting the following trace:
UBSAN: array-index-out-of-bounds in .../drivers/clk/clk-s2mps11.c:186:3
index 0 is out of range for type 'struct clk_hw *[] __counted_by(num)' (aka 'struct clk_hw *[]')
This is because commit f316cdff8d67 ("clk: Annotate struct
clk_hw_onecell_data with __counted_by") annotated the hws member of
that struct with __counted_by, which informs the bounds sanitizer about
the number of elements in hws, so that it can warn when hws is accessed
out of bounds.
As noted in that change, the __counted_by member must be initialised
with the number of elements before the first array access happens,
otherwise there will be a warning from each access prior to the
initialisation because the number of elements is zero. This occurs in
s2mps11_clk_probe() due to ::num being assigned after ::hws access.
Move the assignment to satisfy the requirement of assign-before-access.
Cc: stable@vger.kernel.org Fixes: f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by") Signed-off-by: André Draszik <andre.draszik@linaro.org> Link: https://lore.kernel.org/r/20250326-s2mps11-ubsan-v1-1-fcc6fce5c8a9@linaro.org Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current implementation maps the APR table using a fixed size,
which can lead to incorrect mapping when the number of PFs and VFs
varies.
This patch corrects the mapping by calculating the APR table
size dynamically based on the values configured in the
APR_LMT_CFG register, ensuring accurate representation
of APR entries in debugfs.
Syzbot reported a slab-use-after-free with the following call trace:
==================================================================
BUG: KASAN: slab-use-after-free in tipc_aead_encrypt_done+0x4bd/0x510 net/tipc/crypto.c:840
Read of size 8 at addr ffff88807a733000 by task kworker/1:0/25
After freed the tipc_crypto tx by delete namespace, tipc_aead_encrypt_done
may still visit it in cryptd_queue_worker workqueue.
I reproduce this issue by:
ip netns add ns1
ip link add veth1 type veth peer name veth2
ip link set veth1 netns ns1
ip netns exec ns1 tipc bearer enable media eth dev veth1
ip netns exec ns1 tipc node set key this_is_a_master_key master
ip netns exec ns1 tipc bearer disable media eth dev veth1
ip netns del ns1
The key of reproduction is that, simd_aead_encrypt is interrupted, leading
to crypto_simd_usable() return false. Thus, the cryptd_queue_worker is
triggered, and the tipc_crypto tx will be visited.
This patch adds support to AF_XDP zero copy for CN10K.
This patch specifically adds receive side support. In this approach once
a xdp program with zero copy support on a specific rx queue is enabled,
then that receive quse is disabled/detached from the existing kernel
queue and re-assigned to the umem memory.
Signed-off-by: Suman Ghosh <sumang@marvell.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: 184fb40f731b ("octeontx2-pf: Avoid adding dcbnl_ops for LBK and SDP vf") Signed-off-by: Sasha Levin <sashal@kernel.org>
When enqueuing the first packet to an HFSC class, hfsc_enqueue() calls the
child qdisc's peek() operation before incrementing sch->q.qlen and
sch->qstats.backlog. If the child qdisc uses qdisc_peek_dequeued(), this may
trigger an immediate dequeue and potential packet drop. In such cases,
qdisc_tree_reduce_backlog() is called, but the HFSC qdisc's qlen and backlog
have not yet been updated, leading to inconsistent queue accounting. This
can leave an empty HFSC class in the active list, causing further
consequences like use-after-free.
This patch fixes the bug by moving the increment of sch->q.qlen and
sch->qstats.backlog before the call to the child qdisc's peek() operation.
This ensures that queue length and backlog are always accurate when packet
drops or dequeues are triggered during the peek.
Fixes: 12d0ad3be9c3 ("net/sched/sch_hfsc.c: handle corner cases where head may change invalidating calculated deadline") Reported-by: Mingi Cho <mincho@theori.io> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250518222038.58538-2-xiyou.wangcong@gmail.com Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Leaving the CQ critical section in the middle of a overflow flushing
can cause cqe reordering since the cache cq pointers are reset and any
new cqe emitters that might get called in between are not going to be
forced into io_cqe_cache_refill().
Commit 5ef44b3cb43b ("xsk: Bring back busy polling support") fixed the
busy polling support in xsk for XDP_ZEROCOPY after it was broken in
commit 86e25f40aa1e ("net: napi: Add napi_config"). The busy polling
support with XDP_COPY remained broken since the napi_id setup in
xsk_rcv_check was removed.
Bring back the setup of napi_id for XDP_COPY so socket level SO_BUSYPOLL
can be used to poll the underlying napi.
Do the setup of napi_id for XDP_COPY in xsk_bind, as it is done
currently for XDP_ZEROCOPY. The setup of napi_id for XDP_COPY in
xsk_bind is safe because xsk_rcv_check checks that the rx queue at which
the packet arrives is equal to the queue_id that was supplied in bind.
This is done for both XDP_COPY and XDP_ZEROCOPY mode.
Tested using AF_XDP support in virtio-net by running the xsk_rr AF_XDP
benchmarking tool shared here:
https://lore.kernel.org/all/20250320163523.3501305-1-skhawaja@google.com/T/
Enabled socket busy polling using following commands in qemu,
```
sudo ethtool -L eth0 combined 1
echo 400 | sudo tee /proc/sys/net/core/busy_read
echo 100 | sudo tee /sys/class/net/eth0/napi_defer_hard_irqs
echo 15000 | sudo tee /sys/class/net/eth0/gro_flush_timeout
```
Fixes: 5ef44b3cb43b ("xsk: Bring back busy polling support") Signed-off-by: Samiullah Khawaja <skhawaja@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
SGMII_CTRL register, which specifies the active interface, was not
properly restored when resuming from suspend. This led to incorrect
interface selection after resume particularly in scenarios involving
the FPGA.
To fix this:
- Move the SGMII_CTRL setup out of the probe function.
- Initialize the register in the hardware initialization helper function,
which is called during both device initialization and resume.
This ensures the interface configuration is consistently restored after
suspend/resume cycles.
Fixes: a46d9d37c4f4f ("net: lan743x: Add support for SGMII interface") Signed-off-by: Thangaraj Samynathan <thangaraj.s@microchip.com> Link: https://patch.msgid.link/20250516035719.117960-1-thangaraj.s@microchip.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
While the MDIO address of the internal PHY on Allwinner sun8i chips is
generally 1, of_mdio_parse_addr is used to cleanly parse the address
from the device-tree instead of hardcoding it.
A commit reworking the code ditched the parsed value and hardcoded the
value 1 instead, which didn't really break anything but is more fragile
and not future-proof.
Restore the initial behavior using the parsed address returned from the
helper.
Error-handling paths in msm_pinctrl_probe() don't call
a function required to unroll restart handler registration,
unregister_restart_handler(). Instead of adding calls to this function,
switch the msm pinctrl code into using devm_register_sys_off_handler().
Block devices can be opened read-write even if they can't be written to
for historic reasons. Remove the check requiring file->f_op->write_iter
when the block devices was opened in loop_configure. The call to
loop_check_backing_file just below ensures the ->write_iter is present
for backing files opened for writing, which is the only check that is
actually needed.
Fixes: f5c84eff634b ("loop: Add sanity check for read/write_iter") Reported-by: Christian Hesse <mail@eworm.de> Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250520135420.1177312-1-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>
idpf_features_check is used to validate the TX packet. skb header
length is compared with the hardware supported value received from
the device control plane. The value is stored in the adapter structure
and to access it, vport pointer is used. During reset all the vports
are released and the vport pointer that the netdev private structure
points to is NULL.
To avoid null-ptr-deref, store the max header length value in netdev
private structure. This also helps to cache the value and avoid
accessing adapter pointer in hot path.
If an aggregate has the following conditions:
- The SRIOV LAG DDP package has been enabled
- The bond is in 802.3ad LACP mode
- The bond is disqualified from supporting SRIOV VF LAG
- Both interfaces were added simultaneously to the bond (same command)
Then there is a chance that the two interfaces will be assigned different
LACP Aggregator ID's. This will cause a failure of the LACP control over
the bond.
To fix this, we can detect if the primary interface for the bond (as
defined by the driver) is not in switchdev mode, and exit the setup flow
if so.
Reproduction steps:
%> ip link add bond0 type bond mode 802.3ad miimon 100
%> ip link set bond0 up
%> ifenslave bond0 eth0 eth1
%> cat /proc/net/bonding/bond0 | grep Agg
Check for Aggregator IDs that differ.
Fixes: ec5a6c5f79ed ("ice: process events created by lag netdev event handler") Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com> Signed-off-by: Dave Ertman <david.m.ertman@intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
The ice_vc_repr_add_mac() function indicates that it does not store the MAC
address filters in the firmware. However, it still increments vf->num_mac.
This is incorrect, as vf->num_mac should represent the number of MAC
filters currently programmed to firmware.
Indeed, we only perform this increment if the requested filter is a unicast
address that doesn't match the existing vf->hw_lan_addr. In addition,
ice_vc_repr_del_mac() does not decrement the vf->num_mac counter. This
results in the counter becoming out of sync with the actual count.
As it turns out, vf->num_mac is currently only used in legacy made without
port representors. The single place where the value is checked is for
enforcing a filter limit on untrusted VFs.
Upcoming patches to support VF Live Migration will use this value when
determining the size of the TLV for MAC address filters. Fix the
representor mode function to stop incrementing the counter incorrectly.
Fixes: ac19e03ef780 ("ice: allow process VF opcodes in different ways") Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Reviewed-by: Simon Horman <horms@kernel.org> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
The running kernel has CONFIG_IP_MROUTE_MULTIPLE_TABLES disabled, and
the sanity check for such build is still too loose.
Address the issue consolidating the relevant sanity check in a single
helper regardless of the kernel configuration. Also share it between
the ipv4 and ipv6 code.
When netfilter defrag hooks are loaded (due to the presence of conntrack
rules, for example), fragmented packets entering the bridge will be
defragged by the bridge's pre-routing hook (br_nf_pre_routing() ->
ipv4_conntrack_defrag()).
Later on, in the bridge's post-routing hook, the defragged packet will
be fragmented again. If the size of the largest fragment is larger than
what the kernel has determined as the destination MTU (using
ip_skb_dst_mtu()), the defragged packet will be dropped.
Before commit ac6627a28dbf ("net: ipv4: Consolidate ipv4_mtu and
ip_dst_mtu_maybe_forward"), ip_skb_dst_mtu() would return dst_mtu() as
the destination MTU. Assuming the dst entry attached to the packet is
the bridge's fake rtable one, this would simply be the bridge's MTU (see
fake_mtu()).
However, after above mentioned commit, ip_skb_dst_mtu() ends up
returning the route's MTU stored in the dst entry's metrics. Ideally, in
case the dst entry is the bridge's fake rtable one, this should be the
bridge's MTU as the bridge takes care of updating this metric when its
MTU changes (see br_change_mtu()).
Unfortunately, the last operation is a no-op given the metrics attached
to the fake rtable entry are marked as read-only. Therefore,
ip_skb_dst_mtu() ends up returning 1500 (the initial MTU value) and
defragged packets are dropped during fragmentation when dealing with
large fragments and high MTU (e.g., 9k).
Fix by moving the fake rtable entry's metrics to be per-bridge (in a
similar fashion to the fake rtable entry itself) and marking them as
writable, thereby allowing MTU changes to be reflected.
The debugfs summary output could access uninitialized elements in
the freq_in[] and signal_out[] arrays, causing NULL pointer
dereferences and triggering a kernel Oops (page_fault_oops).
This patch adds u8 fields (nr_freq_in, nr_signal_out) to track the
number of initialized elements, with a maximum of 4 per array.
The summary output functions are updated to respect these limits,
preventing out-of-bounds access and ensuring safe array handling.
Widen the label variables because the change confuses GCC about
max length of the strings.
l2cap_check_enc_key_size shall check the security level of the
l2cap_chan rather than the hci_conn since for incoming connection
request that may be different as hci_conn may already been
encrypted using a different security level.
Fixes: 522e9ed157e3 ("Bluetooth: l2cap: Check encryption key size on incoming connection") Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
That happens because intel_pmu_pebs_event_update_no_drain() assumes all the
pebs_enabled bits represent counter indexes, which is not always the case.
In this particular case, bits 60 and 61 are set for PEBS-via-PT purposes.
The behaviour of PEBS-via-PT with sample frequency is questionable because
although a PMI is generated (PEBS_PMI_AFTER_EACH_RECORD), the period is not
adjusted anyway.
Putting that aside, fix intel_pmu_pebs_event_update_no_drain() by passing
the mask of counter bits instead of 'size'. Note, prior to the Fixes
commit, 'size' would be limited to the maximum counter index, so the issue
was not hit.
Fixes: 722e42e45c2f1 ("perf/x86: Support counter mask") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Ian Rogers <irogers@google.com> Cc: linux-perf-users@vger.kernel.org Link: https://lore.kernel.org/r/20250508134452.73960-1-adrian.hunter@intel.com Signed-off-by: Sasha Levin <sashal@kernel.org>
When starting the local sync timer to synchronize the state of a remote
CPU it should be added on the CPU to be synchronized, not the initiating
CPU. This results in interrupt delivery being delayed until the timer
eventually runs (due to another mask/unmask/migrate operation) on the
target CPU.
Fixes: 0f67911e821c ("irqchip/riscv-imsic: Separate next and previous pointers in IMSIC vector") Signed-off-by: Andrew Bresticker <abrestic@rivosinc.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/all/20250514171320.3494917-1-abrestic@rivosinc.com Signed-off-by: Sasha Levin <sashal@kernel.org>
hda_generic_machine_select() appends -idisp to the tplg filename by
allocating a new string with devm_kasprintf(), then stores the string
right back into the global variable snd_soc_acpi_intel_hda_machines.
When the module is unloaded, this memory is freed, resulting in a global
variable pointing to freed memory. Reloading the module then triggers
a use-after-free:
BUG: KFENCE: use-after-free read in string+0x48/0xe0
Use-after-free read at 0x00000000967e0109 (in kfence-#99):
string+0x48/0xe0
vsnprintf+0x329/0x6e0
devm_kvasprintf+0x54/0xb0
devm_kasprintf+0x58/0x80
hda_machine_select.cold+0x198/0x17a2 [snd_sof_intel_hda_generic]
sof_probe_work+0x7f/0x600 [snd_sof]
process_one_work+0x17b/0x330
worker_thread+0x2ce/0x3f0
kthread+0xcf/0x100
ret_from_fork+0x31/0x50
ret_from_fork_asm+0x1a/0x30
For fsl,imx93-edma4 two DMA channels share the same interrupt.
So in case fsl_edma3_tx_handler is called for the "wrong"
channel, the return code must be IRQ_NONE. This signalize that
the interrupt wasn't handled.
Fixes: 72f5801a4e2b ("dmaengine: fsl-edma: integrate v3 support") Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Joy Zou <joy.zou@nxp.com> Link: https://lore.kernel.org/r/20250424114829.9055-1-wahrenst@gmx.net Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
The fix to block access from different address space did not return a
correct value for ->poll() change. kernel test bot reported that a
return value of type __poll_t is expected rather than int. Fix to return
POLLNVAL to indicate invalid request.
Fixes: 8dfa57aabff6 ("dmaengine: idxd: Fix allowing write() from different address spaces") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202505081851.rwD7jVxg-lkp@intel.com/ Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/20250508170548.2747425-1-dave.jiang@intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Prior to this patch, the mark is sanitized (applying the state's mask to
the state's value) only on inserts when checking if a conflicting XFRM
state or policy exists.
We discovered in Cilium that this same sanitization does not occur
in the hot-path __xfrm_state_lookup. In the hot-path, the sk_buff's mark
is simply compared to the state's value:
if ((mark & x->mark.m) != x->mark.v)
continue;
Therefore, users can define unsanitized marks (ex. 0xf42/0xf00) which will
never match any packet.
This commit updates __xfrm_state_insert and xfrm_policy_insert to store
the sanitized marks, thus removing this footgun.
This has the side effect of changing the ip output, as the
returned mark will have the mask applied to it when printed.
Fixes: 3d6acfa7641f ("xfrm: SA lookups with mark") Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com> Signed-off-by: Louis DeLosSantos <louis.delos.devel@gmail.com> Co-developed-by: Louis DeLosSantos <louis.delos.devel@gmail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
The D1/R528/T113 SoCs have a hidden divider of 2 in the MMC mod clocks,
just as other recent SoCs. So far we did not describe that, which led
to the resulting MMC clock rate to be only half of its intended value.
Use a macro that allows to describe a fixed post-divider, to compensate
for that divisor.
This brings the MMC performance on those SoCs to its expected level,
so about 23 MB/s for SD cards, instead of the 11 MB/s measured so far.
Fixes: 35b97bb94111 ("clk: sunxi-ng: Add support for the D1 SoC clocks") Reported-by: Kuba Szczodrzyński <kuba@szczodrzynski.pl> Signed-off-by: Andre Przywara <andre.przywara@arm.com> Link: https://patch.msgid.link/20250501120631.837186-1-andre.przywara@arm.com Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Recent change to handle platforms with only single power domain broke
pronto-v3 which requires power domains and doesn't have fallback voltage
regulators in case power domains are missing. Add a check to verify
the number of fallback voltage regulators before using the code which
handles single power domain situation.
Fixes: 65991ea8a6d1 ("remoteproc: qcom_wcnss: Handle platforms with only single power domain") Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com> Tested-by: Luca Weiss <luca.weiss@fairphone.com> # sdm632-fairphone-fp3 Link: https://lore.kernel.org/r/20250511234026.94735-1-matti.lehtimaki@gmail.com Signed-off-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Not intuitive, but vm_area_dup() located in kernel/fork.c is not only used
for duplicating VMAs during fork(), but also for duplicating VMAs when
splitting VMAs or when mremap()'ing them.
VM_PFNMAP mappings can at least get ordinarily mremap()'ed (no change in
size) and apparently also shrunk during mremap(), which implies
duplicating the VMA in __split_vma() first.
In case of ordinary mremap() (no change in size), we first duplicate the
VMA in copy_vma_and_data()->copy_vma() to then call untrack_pfn_clear() on
the old VMA: we effectively move the VM_PAT reservation. So the
untrack_pfn_clear() call on the new VMA duplicating is wrong in that
context.
Splitting of VMAs seems problematic, because we don't duplicate/adjust the
reservation when splitting the VMA. Instead, in memtype_erase() -- called
during zapping/munmap -- we shrink a reservation in case only the end
address matches: Assume we split a VMA into A and B, both would share a
reservation until B is unmapped.
So when unmapping B, the reservation would be updated to cover only A.
When unmapping A, we would properly remove the now-shrunk reservation.
That scenario describes the mremap() shrinking (old_size > new_size),
where we split + unmap B, and the untrack_pfn_clear() on the new VMA when
is wrong.
What if we manage to split a VM_PFNMAP VMA into A and B and unmap A first?
It would be broken because we would never free the reservation. Likely,
there are ways to trigger such a VMA split outside of mremap().
Affecting other VMA duplication was not intended, vm_area_dup() being used
outside of kernel/fork.c was an oversight. So let's fix that for; how to
handle VMA splits better should be investigated separately.
With a simple reproducer that uses mprotect() to split such a VMA I can
trigger
The GHCB_MSR_VMPL_REQ_LEVEL macro lacked parentheses around the bitmask
expression, causing the shift operation to bind too early. As a result,
when requesting VMPL1 (e.g., GHCB_MSR_VMPL_REQ_LEVEL(1)), incorrect
values such as 0x000000016 were generated instead of the intended
0x100000016 (the requested VMPL level is specified in GHCBData[39:32]).
Fix the precedence issue by grouping the masked value before applying
the shift.
This fixes an issue that's caused if there is a mismatch between the data
offset in the GRO header and the length fields in the regular sk_buff due
to the pskb_pull()/skb_push() calls. That's because the UDP GRO layer
stripped off the UDP header via skb_gro_pull() already while the UDP
header was explicitly not pulled/pushed in this function.
For example, an IKE packet that triggered this had len=data_len=1268 and
the data_offset in the GRO header was 28 (IPv4 + UDP). So pskb_pull()
was called with an offset of 28-8=20, which reduced len to 1248 and via
pskb_may_pull() and __pskb_pull_tail() it also set data_len to 1248.
As the ESP offload module was not loaded, the function bailed out and
called skb_push(), which restored len to 1268, however, data_len remained
at 1248.
So while skb_headlen() was 0 before, it was now 20. The latter caused a
difference of 8 instead of 28 (or 0 if pskb_pull()/skb_push() was called
with the complete GRO data_offset) in gro_try_pull_from_frag0() that
triggered a call to gro_pull_from_frag0() that corrupted the packet.
This change uses a more GRO-like approach seen in other GRO receivers
via skb_gro_header() to just read the actual data we are interested in
and does not try to "restore" the UDP header at this point to call the
existing function. If the offload module is not loaded, it immediately
bails out, otherwise, it only does a quick check to see if the packet
is an IKE or keepalive packet instead of calling the existing function.
Fixes: 172bf009c18d ("xfrm: Support GRO for IPv4 ESP in UDP encapsulation") Fixes: 221ddb723d90 ("xfrm: Support GRO for IPv6 ESP in UDP encapsulation") Signed-off-by: Tobias Brunner <tobias@strongswan.org> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
The current scheme for caching the encap socket can lead to reference
leaks when we try to delete the netns.
The reference chain is: xfrm_state -> enacp_sk -> netns
Since the encap socket is a userspace socket, it holds a reference on
the netns. If we delete the espintcp state (through flush or
individual delete) before removing the netns, the reference on the
socket is dropped and the netns is correctly deleted. Otherwise, the
netns may not be reachable anymore (if all processes within the ns
have terminated), so we cannot delete the xfrm state to drop its
reference on the socket.
This patch results in a small (~2% in my tests) performance
regression.
A GC-type mechanism could be added for the socket cache, to clear
references if the state hasn't been used "recently", but it's a lot
more complex than just not caching the socket.
The SoundWire IRQ domain needs to be created before any slaves are added
to the bus, such that the domain is always available when needed. Move
the call to sdw_irq_create() before the calls to sdw_acpi_find_slaves()
and sdw_of_find_slaves().
... or we risk stealing final mntput from sync umount - raising mnt_count
after umount(2) has verified that victim is not busy, but before it
has set MNT_SYNC_UMOUNT; in that case __legitimize_mnt() doesn't see
that it's safe to quietly undo mnt_count increment and leaves dropping
the reference to caller, where it'll be a full-blown mntput().
Check under mount_lock is needed; leaving the current one done before
taking that makes no sense - it's nowhere near common enough to bother
with.
Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Sasha Levin <sashal@kernel.org>
[Why]
Memory allocation occurs within dml21_validate() for adding phantom planes.
May cause kernel to be tainted due to usage of FP Start.
[How]
Move FP start from dml21_validate to before mode programming/mode support.
Calculations requiring floating point are all done within mode programming
or mode support.
Reviewed-by: Alvin Lee <alvin.lee2@amd.com> Signed-off-by: Austin Zheng <Austin.Zheng@amd.com> Signed-off-by: Ray Wu <ray.wu@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit fe3250f10819b411808ab9ae1d824c5fc9b59170) Signed-off-by: Sasha Levin <sashal@kernel.org>
Make xenbus_init() allow a non-local xenstore for a PVH dom0 - it is
currently forced to XS_LOCAL. With Hyperlaunch booting dom0 and a
xenstore stubdom, dom0 can be handled as a regular XS_HVM following the
late init path.
Ideally we'd drop the use of xen_initial_domain() and just check for the
event channel instead. However, ARM has a xen,enhanced no-xenstore
mode, where the event channel and PFN would both be 0. Retain the
xen_initial_domain() check, and use that for an additional check when
the event channel is 0.
Check the full 64bit HVM_PARAM_STORE_EVTCHN value to catch the off
chance that high bits are set for the 32bit event channel.
This happens because core::fmt::write() calls
core::fmt::rt::Argument::fmt(), which currently has CFI disabled:
library/core/src/fmt/rt.rs:
171 // FIXME: Transmuting formatter in new and indirectly branching to/calling
172 // it here is an explicit CFI violation.
173 #[allow(inline_no_sanitize)]
174 #[no_sanitize(cfi, kcfi)]
175 #[inline]
176 pub(super) unsafe fn fmt(&self, f: &mut Formatter<'_>) -> Result {
This causes a Control Protection exception, because FineIBT has sealed
off the original function's endbr64.
This makes rust currently incompatible with FineIBT. Add a Kconfig
dependency that prevents FineIBT from getting turned on by default
if rust is enabled.
[ Rust 1.88.0 (scheduled for 2025-06-26) should have this fixed [1],
and thus we relaxed the condition with Rust >= 1.88.
When `objtool` lands checking for this with e.g. [2], the plan is
to ideally run that in upstream Rust's CI to prevent regressions
early [3], since we do not control `core`'s source code.
Alice tested the Rust PR backported to an older compiler.
Peter would like that Rust provides a stable `core` which can be
pulled into the kernel: "Relying on that much out of tree code is
'unfortunate'".
In case of a ZONE APPEND write, regardless of native ZONE APPEND or the
emulation layer in the zone write plugging code, the sector the data got
written to by the device needs to be updated in the bio.
At the moment, this is done for every native ZONE APPEND write and every
request that is flagged with 'BIO_ZONE_WRITE_PLUGGING'. But thus
superfluously updates the sector for regular writes to a zoned block
device.
Check if a bio is a native ZONE APPEND write or if the bio is flagged as
'BIO_EMULATES_ZONE_APPEND', meaning the block layer's zone write plugging
code handles the ZONE APPEND and translates it into a regular write and
back. Only if one of these two criterion is met, update the sector in the
bio upon completion.
Strings from the kernel are guaranteed to be null terminated and
ynl_attr_validate() checks for this. But it doesn't check if the string
has a len of 0, which would cause problems when trying to access
data[len - 1]. Fix this by checking that len is positive.
[CAUSE]
Mount option "rescue=idatacsums" will completely skip loading the csum
tree, so that any data read will not find any data csum thus we will
ignore data checksum verification.
Normally call sites utilizing csum tree will check the fs state flag
NO_DATA_CSUMS bit, but unfortunately scrub does not check that bit at all.
This results in scrub to call btrfs_search_slot() on a NULL pointer
and triggered above crash.
[FIX]
Check both extent and csum tree root before doing any tree search.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
num_extent_folios() unconditionally calls folio_order() on
eb->folios[0]. If that is NULL this will be a segfault. It is reasonable
for it to return 0 as the number of folios in the eb when the first
entry is NULL, so do that instead.
Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Boris Burkov <boris@bur.io> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
btrfs_prelim_ref() calls the old and new reference variables in the
incorrect order. This causes a NULL pointer dereference because oldref
is passed as NULL to trace_btrfs_prelim_ref_insert().
Note, trace_btrfs_prelim_ref_insert() is being called with newref as
oldref (and oldref as NULL) on purpose in order to print out
the values of newref.
To reproduce:
echo 1 > /sys/kernel/debug/tracing/events/btrfs/btrfs_prelim_ref_insert/enable
In preparation for making the kmalloc() family of allocators type aware,
we need to make sure that the returned type from the allocation matches
the type of the variable being assigned. (Before, the allocator would
always return "void *", which can be implicitly cast to any pointer type.)
The assigned type is "struct folio **" but the returned type will be
"struct page **". These are the same allocation size (pointer size), but
the types don't match. Adjust the allocation type to match the assignment.
Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Kees Cook <kees@kernel.org> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
The volume control for cs35l56 speakers has a maximum gain of +12 dB.
However, for many use cases, this can cause distorted audio, depending
various factors, such as other signal-processing elements in the chain,
for example if the audio passes through a gain control before reaching
the amp or the signal path has been tuned for a particular maximum
gain in the amp.
In the case of systems which use the soc_sdw_* driver, audio will
likely be distorted in all cases above 0 dB, therefore add a volume
limit of 400, which is 0 dB maximum volume inside this driver.
The volume limit should be applied to both soundwire and soundwire
bridge configurations.
The volume control for cs42l43 speakers has a maximum gain of +31.5 dB.
However, for many use cases, this can cause distorted audio, depending
various factors, such as other signal-processing elements in the chain,
for example if the audio passes through a gain control before reaching
the codec or the signal path has been tuned for a particular maximum
gain in the codec.
In the case of systems which use the soc_sdw_cs42l43 driver, audio will
likely be distorted in all cases above 0 dB, therefore add a volume
limit of 128, which is 0 dB maximum volume inside this driver.
Function CIFSSMBSetPathInfo() is not supported by non-NT servers and
returns error. Fallback code via open filehandle and CIFSSMBSetFileInfo()
does not work neither because CIFS_open() works also only on NT server.
Therefore currently the whole smb_set_file_info() function as a SMB1
callback for the ->set_file_info() does not work with older non-NT SMB
servers, like Win9x and others.
This change implements fallback code in smb_set_file_info() which will
works with any server and allows to change time values and also to set or
clear read-only attributes.
To make existing fallback code via CIFSSMBSetFileInfo() working with also
non-NT servers, it is needed to change open function from CIFS_open()
(which is NT specific) to cifs_open_file() which works with any server
(this is just a open wrapper function which choose the correct open
function supported by the server).
CIFSSMBSetFileInfo() is working also on non-NT servers, but zero time
values are not treated specially. So first it is needed to fill all time
values if some of them are missing, via cifs_query_path_info() call.
There is another issue, opening file in write-mode (needed for changing
attributes) is not possible when the file has read-only attribute set.
The only option how to clear read-only attribute is via SMB_COM_SETATTR
command. And opening directory is not possible neither and here the
SMB_COM_SETATTR command is the only option how to change attributes.
And CIFSSMBSetFileInfo() does not honor setting read-only attribute, so
for setting is also needed to use SMB_COM_SETATTR command.
Existing code in cifs_query_path_info() is already using SMB_COM_GETATTR as
a fallback code path (function SMBQueryInformation()), so introduce a new
function SMBSetInformation which will implement SMB_COM_SETATTR command.
My testing showed that Windows XP SMB1 client is also using SMB_COM_SETATTR
command for setting or clearing read-only attribute against non-NT server.
So this can prove that this is the correct way how to do it.
With this change it is possible set all 4 time values and all attributes,
including clearing and setting read-only bit on non-NT SMB servers.
Tested against Win98 SMB1 server.
This change fixes "touch" command which was failing when called on existing
file. And fixes also "chmod +w" and "chmod -w" commands which were also
failing (as they are changing read-only attribute).
Note that this change depends on following change
"cifs: Improve cifs_query_path_info() and cifs_query_file_info()"
as it require to query all 4 time attribute values.
Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
When CAP_NT_SMBS was not negotiated then do not issue CIFSSMBQPathInfo()
and CIFSSMBQFileInfo() commands. CIFSSMBQPathInfo() is not supported by
non-NT Win9x SMB server and CIFSSMBQFileInfo() returns from Win9x SMB
server bogus data in Attributes field (for example lot of files are marked
as reparse points, even Win9x does not support them and read-only bit is
not marked for read-only files). Correct information is returned by
CIFSFindFirst() or SMBQueryInformation() command.
So as a fallback in cifs_query_path_info() function use CIFSFindFirst()
with SMB_FIND_FILE_FULL_DIRECTORY_INFO level which is supported by both NT
and non-NT servers and as a last option use SMBQueryInformation() as it was
before.
And in function cifs_query_file_info() immediately returns -EOPNOTSUPP when
not communicating with NT server. Client then revalidate inode entry by the
cifs_query_path_info() call, which is working fine. So fstat() syscall on
already opened file will receive correct information.
Note that both fallback functions in non-UNICODE mode expands wildcards.
Therefore those fallback functions cannot be used on paths which contain
SMB wildcard characters (* ? " > <).
CIFSFindFirst() returns all 4 time attributes as opposite of
SMBQueryInformation() which returns only one.
With this change it is possible to query all 4 times attributes from Win9x
server and at the same time, client minimize sending of unsupported
commands to server.
Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
syzbot complains about the cached sq head read, and it's totally right.
But we don't need to care, it's just reading fdinfo, and reading the
CQ or SQ tail/head entries are known racy in that they are just a view
into that very instant and may of course be outdated by the time they
are reported.
Annotate both the SQ head and CQ tail read with data_race() to avoid
this syzbot complaint.
queue->state_change is set as part of nvmet_tcp_set_queue_sock(), but if
the TCP connection isn't established when nvmet_tcp_set_queue_sock() is
called then queue->state_change isn't set and sock->sk->sk_state_change
isn't replaced.
As such we don't need to restore sock->sk->sk_state_change if
queue->state_change is NULL.
This avoids NULL pointer dereferences such as this:
The MIDI substream name string is constructed from the combination of
the card shortname (which is taken from USB iProduct) and the USB
iJack. The problem is that some devices put the product name to the
iJack field, too. For example, aplaymidi -l output on the Lanchkey MK
49 are like:
% aplaymidi -l
Port Client name Port name
44:0 Launchkey MK4 49 Launchkey MK4 49 Launchkey MK4
44:1 Launchkey MK4 49 Launchkey MK4 49 Launchkey MK4
where the actual iJack name can't be seen because it's truncated due
to the doubly words.
For resolving those situations, this patch compares the iJack string
with the card shortname, and drops if both start with the same words.
Then the result becomes like:
% aplaymidi -l
Port Client name Port name
40:0 Launchkey MK4 49 Launchkey MK4 49 MIDI In
40:1 Launchkey MK4 49 Launchkey MK4 49 DAW In
A caveat is that there are some pre-defined names for certain
devices in the driver code, and this workaround shouldn't be applied
to them. Similarly, when the iJack isn't specified, we should skip
this check, too. The patch added those checks in addition to the
string comparison.
Add two quirks for the WDC Blue SN550 (PCI ID 15b7:5009) based on user
reports and hardware analysis:
- NVME_QUIRK_NO_DEEPEST_PS:
liaozw talked to me the problem and solved with
nvme_core.default_ps_max_latency_us=0, so add the quirk.
I also found some reports in the following link.
- NVME_QUIRK_BROKEN_MSI:
after get the lspci from Jack Rio.
I think that the disk also have NVME_QUIRK_BROKEN_MSI.
described in commit d5887dc6b6c0 ("nvme-pci: Add quirk for broken MSIs")
as sean said in link which match the MSI 1/32 and MSI-X 17.
Log:
lspci -nn | grep -i memory
03:00.0 Non-Volatile memory controller [0108]: Sandisk Corp SanDisk Ultra 3D / WD PC SN530, IX SN530, Blue SN550 NVMe SSD (DRAM-less) [15b7:5009] (rev 01)
lspci -v -d 15b7:5009
03:00.0 Non-Volatile memory controller: Sandisk Corp SanDisk Ultra 3D / WD PC SN530, IX SN530, Blue SN550 NVMe SSD (DRAM-less) (rev 01) (prog-if 02 [NVM Express])
Subsystem: Sandisk Corp WD Blue SN550 NVMe SSD
Flags: bus master, fast devsel, latency 0, IRQ 35, IOMMU group 10
Memory at fe800000 (64-bit, non-prefetchable) [size=16K]
Memory at fe804000 (64-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 3
Capabilities: [90] MSI: Enable- Count=1/32 Maskable- 64bit+
Capabilities: [b0] MSI-X: Enable+ Count=17 Masked-
Capabilities: [c0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [150] Device Serial Number 00-00-00-00-00-00-00-00
Capabilities: [1b8] Latency Tolerance Reporting
Capabilities: [300] Secondary PCI Express
Capabilities: [900] L1 PM Substates
Kernel driver in use: nvme
dmesg | grep nvme
[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-6.12.20-amd64-desktop-rolling root=UUID= ro splash quiet nvme_core.default_ps_max_latency_us=0 DEEPIN_GFXMODE=
[ 0.059301] Kernel command line: BOOT_IMAGE=/vmlinuz-6.12.20-amd64-desktop-rolling root=UUID= ro splash quiet nvme_core.default_ps_max_latency_us=0 DEEPIN_GFXMODE=
[ 0.542430] nvme nvme0: pci function 0000:03:00.0
[ 0.560426] nvme nvme0: allocated 32 MiB host memory buffer.
[ 0.562491] nvme nvme0: 16/0/0 default/read/poll queues
[ 0.567764] nvme0n1: p1 p2 p3 p4 p5 p6 p7 p8 p9
[ 6.388726] EXT4-fs (nvme0n1p7): mounted filesystem ro with ordered data mode. Quota mode: none.
[ 6.893421] EXT4-fs (nvme0n1p7): re-mounted r/w. Quota mode: none.
[ 7.125419] Adding 16777212k swap on /dev/nvme0n1p8. Priority:-2 extents:1 across:16777212k SS
[ 7.157588] EXT4-fs (nvme0n1p6): mounted filesystem r/w with ordered data mode. Quota mode: none.
[ 7.165021] EXT4-fs (nvme0n1p9): mounted filesystem r/w with ordered data mode. Quota mode: none.
[ 8.036932] nvme nvme0: using unchecked data buffer
[ 8.096023] block nvme0n1: No UUID available providing old NGUID
fix the below warning messages:
ttm/ttm_bo.c:1098: warning: Function parameter or struct member 'hit_low' not described in 'ttm_bo_swapout_walk'
ttm/ttm_bo.c:1098: warning: Function parameter or struct member 'evict_low' not described in 'ttm_bo_swapout_walk'
HP Spectre x360 15-df1xxx with SSID 13c:863e requires similar
workarounds that were applied to another HP Spectre x360 models;
it has a mute LED only, no micmute LEDs, and needs the speaker GPIO
seup.
The headphone clamps cause fairly loud pops during type detect
because they sink current from the detection process itself. Disable
the clamps whilst the type detect runs, to improve the detection
pop performance.
Add entries to unsupported WMI codes in ideapad_keymap[] and one
check for WMI code 0x13d to trigger platform_profile_cycle().
Signed-off-by: Gašper Nemgar <gasper.nemgar@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20250418070738.7171-1-gasper.nemgar@gmail.com
[ij: joined nested if ()s & major tweaks to changelog] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
ASUS firmware resets OOBE state during S4 suspend, so the keyboard
blinks during resume from hibernation. This patch disables OOBE state
after resume from hibernation.
Signed-off-by: Pavel Nikulin <pavel@noa-labs.com> Link: https://lore.kernel.org/r/20250418140706.1691-1-pavel@noa-labs.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
projects / thirdparty / kernel / stable.git / log
