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1,464,522 commits

Author SHA1 Message Date
Yizhou Zhao
1720db928e 6lowpan: fix NHC entry use-after-free on error path
lowpan_nhc_do_uncompression() looks up an NHC descriptor while holding
lowpan_nhc_lock.  If the descriptor has no uncompress callback, the error
path drops the lock before printing nhc->name.

lowpan_nhc_del() removes descriptors under the same lock and then relies
on synchronize_net() before the owning module can be unloaded.  That only
waits for net RX RCU readers.  lowpan_header_decompress() is also exported
and can be reached from callers that are not necessarily covered by the net
core RX critical section, for example the Bluetooth 6LoWPAN L2CAP receive
path.

This leaves a race where one task drops lowpan_nhc_lock in the error path,
another task unregisters and frees the matching descriptor after
synchronize_net() returns, and the first task then dereferences nhc->name
for the warning.

With the post-unlock window widened, KASAN reports:

  BUG: KASAN: slab-use-after-free in lowpan_nhc_do_uncompression+0x1f4/0x220
  Read of size 8
  lowpan_nhc_do_uncompression
  lowpan_header_decompress

Fix this by printing the warning before dropping lowpan_nhc_lock, so the
descriptor name is read while unregister is still excluded.  The malformed
packet is still rejected with -ENOTSUPP.

Fixes: 92aa7c65d2 ("6lowpan: add generic nhc layer interface")
Cc: stable@vger.kernel.org
Reported-by: Yizhou Zhao <zhaoyz24@mails.tsinghua.edu.cn>
Reported-by: Yuxiang Yang <yangyx22@mails.tsinghua.edu.cn>
Reported-by: Ao Wang <wangao@seu.edu.cn>
Reported-by: Xuewei Feng <fengxw06@126.com>
Reported-by: Qi Li <qli01@tsinghua.edu.cn>
Reported-by: Ke Xu <xuke@tsinghua.edu.cn>
Signed-off-by: Yizhou Zhao <zhaoyz24@mails.tsinghua.edu.cn>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://patch.msgid.link/20260609080054.4541-1-zhaoyz24@mails.tsinghua.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:27:07 -07:00
Ethan Nelson-Moore
f8142f5578 net: fec: remove reference to nonexistent CONFIG_GILBARCONAP option
The CONFIG_GILBARCONAP option has never been defined by the kernel, but
is referred to by drivers/net/ethernet/freescale/fec_main.c. Remove this
reference to eliminate dead code.

Discovered while searching for CONFIG_* symbols referenced in code but
not defined in any Kconfig file.

Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Reviewed-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20260609045200.32606-1-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:25:58 -07:00
Samuel Moelius
24041543da net: pfcp: allocate per-cpu tstats for PFCP netdevs
PFCP uses dev_get_tstats64() as its ndo_get_stats64 callback, but
pfcp_link_setup() does not request NETDEV_PCPU_STAT_TSTATS.  The net
core therefore leaves dev->tstats NULL for PFCP devices.

Creating a PFCP rtnetlink device can immediately ask the new netdev for
stats while building the RTM_NEWLINK notification.  That reaches
dev_get_tstats64() and dereferences the NULL dev->tstats pointer.

Set pcpu_stat_type to NETDEV_PCPU_STAT_TSTATS during PFCP link setup so
the net core allocates the storage expected by dev_get_tstats64().

Fixes: 76c8764ef3 ("pfcp: add PFCP module")
Signed-off-by: Samuel Moelius <sam.moelius@trailofbits.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Link: https://patch.msgid.link/20260609232244.1602027.c569f6c530f6.pfcp-missing-tstats-link-create-oops@trailofbits.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:19:17 -07:00
Xin Long
e9361d0ca5 sctp: validate embedded address parameter length
sctp_verify_asconf() and sctp_verify_param() only validate ADD_IP, DEL_IP,
and SET_PRIMARY parameters against a fixed minimum size of sizeof(struct
sctp_addip_param) + sizeof(struct sctp_paramhdr). This ensures the outer
parameter is large enough to contain an embedded address parameter header,
but does not verify that the embedded address parameter's declared length
fits within the bounds of the outer parameter.

Later, sctp_process_param() and sctp_process_asconf_param() extract the
embedded address parameter and pass it to af->from_addr_param(), which uses
the address parameter length to parse the variable-length address payload.
A malformed peer can therefore advertise an embedded address parameter
length that exceeds the remaining bytes in the enclosing parameter.

Validate that addr_param->p.length does not exceed the space available
after the sctp_addip_param header before processing the embedded address
parameter. Reject malformed parameters when the embedded address length
extends beyond the enclosing parameter bounds.

This prevents out-of-bounds reads when parsing malformed parameters carried
in INIT or ASCONF processing paths.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reported-by: sashiko <sashiko-bot@kernel.org>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/7838b86b69f52add28808fb59034c8f992e97b2d.1781043268.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:18:08 -07:00
Kuniyuki Iwashima
65440a8ce4 ipmr: Convert mr_table.cache_resolve_queue_len to u32.
mr_table.cache_resolve_queue_len is always updated under
spin_lock_bh(&mfc_unres_lock).

Let's convert it to u32.

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260609222013.1550355-1-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:17:30 -07:00
Xiang Mei
f3e02edd83 bridge: cfm: reject invalid CCM interval at configuration time
ccm_tx_work_expired() re-arms itself via queue_delayed_work() using
the configured exp_interval converted by interval_to_us(). When
exp_interval is BR_CFM_CCM_INTERVAL_NONE or out of range,
interval_to_us() returns 0, causing the worker to fire immediately in
a tight loop that allocates skbs until OOM.

Fix this by validating exp_interval at configuration time:

 - Constrain IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL to the valid range
   [BR_CFM_CCM_INTERVAL_3_3_MS, BR_CFM_CCM_INTERVAL_10_MIN] in the
   netlink policy so userspace cannot set an invalid value.

 - Reject starting CCM TX in br_cfm_cc_ccm_tx() when exp_interval has
   not yet been configured (defaults to 0 from kzalloc).

Fixes: 2be665c394 ("bridge: cfm: Netlink SET configuration Interface.")
Reported-by: Weiming Shi <bestswngs@gmail.com>
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260609065116.2818837-1-xmei5@asu.edu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:16:12 -07:00
Jakub Kicinski
c33da0eeca Merge branch 'net-fib-fix-two-use-after-free-in-drivers-during-rcu-dump'
Kuniyuki Iwashima says:

====================
net: fib: Fix two use-after-free in drivers during RCU dump.

syzbot reported fib_info UAF in netdevsim, and the same bug
exists in rocker and mlxsw.

Patch 1 fixes it, and Patch 2 fixes the same type of bug of
fib_rule.
====================

Link: https://patch.msgid.link/20260610061744.2030996-1-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:14:05 -07:00
Kuniyuki Iwashima
2821e85c05 net: fib_rules: Don't dump dying fib_rule in fib_rules_dump().
rocker_router_fib_event() calls fib_rule_get() during RCU dump.

If the fib_rule is dying, refcount_inc() will complain about it.

Let's call refcount_inc_not_zero() in fib_rules_dump().

Fixes: 5d7bfd1419 ("ipv4: fib_rules: Dump FIB rules when registering FIB notifier")
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20260610061744.2030996-3-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:14:03 -07:00
Kuniyuki Iwashima
06b693d2eb ipv4: fib: Don't dump dying fib_info in fib_leaf_notify().
syzbot reported use-after-free in nsim_fib4_prepare_event(). [0]

The problem is that the following functions call fib_info_hold() /
refcount_inc() while dumping fib_info under RCU, which is unsafe.

  * mlxsw_sp_router_fib4_event()
  * rocker_router_fib_event()
  * nsim_fib4_prepare_event()

refcount_inc_not_zero() must be used, but it would be too late
there.

Let's guarantee the lifetime of fib_info in fib_leaf_notify().

Note that IPv6 does not need the corresponding change since
fib6_table_dump() holds fib6_table.tb6_lock.

[0]:
refcount_t: addition on 0; use-after-free.
WARNING: lib/refcount.c:25 at refcount_warn_saturate+0x9f/0x110 lib/refcount.c:25, CPU#0: kworker/u8:15/3420
Modules linked in:
CPU: 0 UID: 0 PID: 3420 Comm: kworker/u8:15 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: netns cleanup_net
RIP: 0010:refcount_warn_saturate+0x9f/0x110 lib/refcount.c:25
Code: eb 66 85 db 74 3e 83 fb 01 75 4c e8 1b f1 22 fd 48 8d 3d 84 cb f1 0a 67 48 0f b9 3a eb 4a e8 08 f1 22 fd 48 8d 3d 81 cb f1 0a <67> 48 0f b9 3a eb 37 e8 f5 f0 22 fd 48 8d 3d 7e cb f1 0a 67 48 0f
RSP: 0018:ffffc9000f2c7270 EFLAGS: 00010293
RAX: ffffffff84a18858 RBX: 0000000000000002 RCX: ffff888032ff9ec0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8f9353e0
RBP: 0000000000000000 R08: ffff888032ff9ec0 R09: 0000000000000005
R10: 0000000000000100 R11: 0000000000000004 R12: ffff8880570cc000
R13: dffffc0000000000 R14: ffff88802b40563c R15: ffff8880570cc000
FS:  0000000000000000(0000) GS:ffff888126173000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb1f4d5d000 CR3: 000000006072a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __refcount_add include/linux/refcount.h:-1 [inline]
 __refcount_inc include/linux/refcount.h:366 [inline]
 refcount_inc include/linux/refcount.h:383 [inline]
 fib_info_hold include/net/ip_fib.h:629 [inline]
 nsim_fib4_prepare_event drivers/net/netdevsim/fib.c:930 [inline]
 nsim_fib_event_schedule_work drivers/net/netdevsim/fib.c:1000 [inline]
 nsim_fib_event_nb+0x1055/0x1240 drivers/net/netdevsim/fib.c:1043
 call_fib_notifier+0x45/0x80 net/core/fib_notifier.c:25
 call_fib_entry_notifier net/ipv4/fib_trie.c:90 [inline]
 fib_leaf_notify net/ipv4/fib_trie.c:2176 [inline]
 fib_table_notify net/ipv4/fib_trie.c:2194 [inline]
 fib_notify+0x36b/0x5e0 net/ipv4/fib_trie.c:2217
 fib_net_dump net/core/fib_notifier.c:70 [inline]
 register_fib_notifier+0x184/0x360 net/core/fib_notifier.c:108
 nsim_fib_create+0x85d/0x9f0 drivers/net/netdevsim/fib.c:1596
 nsim_dev_reload_create drivers/net/netdevsim/dev.c:1604 [inline]
 nsim_dev_reload_up+0x374/0x7c0 drivers/net/netdevsim/dev.c:1058
 devlink_reload+0x501/0x8d0 net/devlink/dev.c:475
 devlink_pernet_pre_exit+0x1ff/0x420 net/devlink/core.c:558
 ops_pre_exit_list net/core/net_namespace.c:161 [inline]
 ops_undo_list+0x187/0x940 net/core/net_namespace.c:234
 cleanup_net+0x56e/0x800 net/core/net_namespace.c:702
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Fixes: 0ae3eb7b46 ("netdevsim: fib: Perform the route programming in a non-atomic context")
Fixes: c3852ef7f2 ("ipv4: fib: Replay events when registering FIB notifier")
Reported-by: syzbot+cb2aa2390ac024e25f5c@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/6a290011.39669fcc.33b062.00b1.GAE@google.com/
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20260610061744.2030996-2-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:14:03 -07:00
Haoxiang Li
034b95cf69 bnx2x: fix resource leaks in bnx2x_init_one() error paths
bnx2x_init_one() falls through to the common memory cleanup path for
several failures after probe has already acquired additional resources.

If register_netdev() fails after bnx2x_set_int_mode(), MSI/MSI-X remains
enabled. If later failures happen after bnx2x_iov_init_one(), PF SR-IOV
state can be left allocated. Also, failures after bnx2x_vfpf_acquire()
must release the PF resources before freeing the VF-PF mailbox allocated
by bnx2x_vf_pci_alloc().

Add error labels matching the resource acquisition order so probe failure
disables MSI/MSI-X, removes SR-IOV state, releases VF-PF resources,
deallocates VF PCI resources, and then frees the common driver memory.
Also clear PCI drvdata before freeing the netdev on probe failure.

Cc: stable+noautosel@kernel.org # untested fix to unlikely error path
Signed-off-by: Haoxiang Li <lihaoxiang@isrc.iscas.ac.cn>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260609074610.1968721-1-lihaoxiang@isrc.iscas.ac.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:09:16 -07:00
Shuvam Pandey
26b67fa10e PCI: dwc: Avoid dwc_pcie_rasdes_debugfs_deinit() NULL dereference when no RAS DES capability
dwc_pcie_rasdes_debugfs_init() returns success when the controller has no
RAS DES capability, leaving pci->debugfs->rasdes_info unset. The common
debugfs teardown path still calls dwc_pcie_rasdes_debugfs_deinit(), which
dereferences rasdes_info unconditionally.

Return early when no RAS DES state was allocated. In that case no RAS DES
mutex was initialized, so there is nothing to destroy.

Fixes: 4fbfa17f9a ("PCI: dwc: Add debugfs based Silicon Debug support for DWC")
Signed-off-by: Shuvam Pandey <shuvampandey1@gmail.com>
[mani: reworded subject]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/0f97352506d8d813f70f441de4d63fcd5b7d1c3e.1779123847.git.shuvampandey1@gmail.com
2026-06-11 17:05:08 -05:00
Jamal Hadi Salim
f294fc71c4 net/sched: cls_flow: Dont expose folded kernel pointers
The flow classifier falls back to addr_fold() for fields that are missing
from packet headers. In map mode, userspace controls mask, xor, rshift,
addend and divisor, and can observe the resulting classid through class
statistics. This allows a tc classifier in a user/network namespace to
recover the 32-bit folded value of skb->sk, skb_dst() or skb_nfct().

Align with standard kernel practices for pointer hashing and replace the
XOR folding with a keyed siphash (which is cryptographically secure)

Fixes: e5dfb81518 ("[NET_SCHED]: Add flow classifier")
Reported-by: Kyle Zeng <kylebot@openai.com>
Tested-by: Kyle Zeng <kylebot@openai.com>
Tested-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260610101839.14135-1-jhs@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:04:56 -07:00
George Moussalem
0b7b378ce6 net: dsa: qca8k: fix led devicename when using external mdio bus
The qca8k dsa switch can use either an external or internal mdio bus.
This depends on whether the mdio node is defined under the switch node
itself. Upon registering the internal mdio bus, the internal_mdio_bus
of the dsa switch is assigned to this bus. When an external mdio bus is
used, the driver still uses the internal_mdio_bus id which is used to
create the device names of the leds.
This leads to the leds being prefixed with '(efault)' as the
internal_mii_bus is null. So let's fix this by adding a null check and
use the devicename of the external bus instead when an external bus is
configured.

Fixes: 1e264f9d29 ("net: dsa: qca8k: add LEDs basic support")
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260608-qca8k-leds-fix-v3-1-a915bb2f37ae@outlook.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 15:02:52 -07:00
Jakub Kicinski
dad4d4b92a Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-7.1-rc8).

Conflicts:

drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c
  f67aead16e ("net: txgbe: rework service event handling")
  57d39faed4 ("net: txgbe: improve functions of AML 40G devices")

net/rds/info.c
  512db8267b ("rds: mark snapshot pages dirty in rds_info_getsockopt()")
  6e94eeb2a2 ("rds: convert to getsockopt_iter")

Adjacent changes:

include/net/sock.h
  1ee90b77b7 ("net: guard timestamp cmsgs to real error queue skbs")
  f0de88303d ("net: make is_skb_wmem() available to modules")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-11 14:33:35 -07:00
Linus Torvalds
f51cae6603 dma-mapping fixes for Linux 7.1
Three more fixes for the DMA-mapping code, related to PCI P2PDMA, DMA
 debug and DMA link ranges API (Li RongQing and Jason Gunthorpe).
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Merge tag 'dma-mapping-7.1-2026-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux

Pull dma-mapping fix from Marek Szyprowski:
 "Three more fixes for the DMA-mapping code, related to PCI P2PDMA, DMA
  debug and DMA link ranges API (Li RongQing and Jason Gunthorpe)"

* tag 'dma-mapping-7.1-2026-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
  iommu/dma: Do not try to iommu_map a 0 length region in swiotlb
  dma-debug: fix physical address retrieval in debug_dma_sync_sg_for_device
  dma-mapping: direct: fix missing mapping for THRU_HOST_BRIDGE segments
2026-06-11 14:22:26 -07:00
Arnd Bergmann
564edaca14 Allwinner device tree changes for 7.2 - Take 2
Some changes for old chips and some for recent ones.
 
 - A83T gained the MIPI CSI-2 receiver
 - overlays enabled for Pine64 boards
 - D1s / T113 and H616 gained the high speed timer
 - T113s watchdog enabled (for reboot)
 - H616 gained proper SRAM regions
 - A523 family gained EL2 virtual timer interrupt and GPADC
 - A523 pinctrl IRQ fix
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Merge tag 'sunxi-dt-for-7.2-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into soc/dt

Allwinner device tree changes for 7.2 - Take 2

Some changes for old chips and some for recent ones.

- A83T gained the MIPI CSI-2 receiver
- overlays enabled for Pine64 boards
- D1s / T113 and H616 gained the high speed timer
- T113s watchdog enabled (for reboot)
- H616 gained proper SRAM regions
- A523 family gained EL2 virtual timer interrupt and GPADC
- A523 pinctrl IRQ fix

* tag 'sunxi-dt-for-7.2-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  arm64: dts: allwinner: a523: Add missing GPIO interrupt
  arm64: dts: allwinner: a523: add gpadc node
  arm64: dts: allwinner: Add EL2 virtual timer interrupt
  ARM: dts: sun8i: a83t: Add MIPI CSI-2 controller node
  dt-bindings: media: sun6i-a31-isp: Add optional interconnect properties
  dt-bindings: media: sun6i-a31-csi: Add optional interconnect properties
  arm64: dts: allwinner: sun50i-a64: Enable DT overlays
  arm: dts: allwinner: t113s: enable watchdog for reboot
  arm64: dts: allwinner: h616: add hstimer node
  riscv: dts: allwinner: d1s-t113: add hstimer node
  arm64: dts: allwinner: sun50i-h616: Add SRAM nodes

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2026-06-11 23:07:44 +02:00
Miguel Ojeda
48b375e482 MAINTAINERS: add Onur Özkan as Rust reviewer
Onur has been involved with the Rust for Linux project for a year now. He
works on the Tyr driver for Arm Mali GPUs [1] and has been driving the
`ww_mutex` series and the SRCU abstractions, as well as improving the
core Rust support in several areas.

In addition, he is already a reviewer of the `RUST [SYNC]` entry and has
been involved with upstream Rust -- for instance, he led the bootstrap
team for two years.

His expertise with the language and its toolchain will be very useful to
have around in the future. Thus add him to the `RUST` entry as reviewer.

Link: https://rust-for-linux.com/tyr-gpu-driver [1]
Acked-by: Onur Özkan <work@onurozkan.dev>
Acked-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260611055538.61425-4-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-06-11 23:05:48 +02:00
Miguel Ojeda
72a8f3fe5b MAINTAINERS: add Alexandre Courbot as Rust reviewer
Alexandre has been involved with the Rust for Linux project for more
than a year now. He is one of the main contributors to Nova [1], the
Rust driver for NVIDIA GPUs, and has authored core Rust infrastructure
motivated by that work, such as the `num` module with the `Bounded`
integer type, the `register!` and `bitfield!` macros, as well as
improvements to abstractions like DMA.

He maintains the nova-core driver, as well as the `RUST [NUM]`, `RUST
[BITFIELD]` and `RUST [INTEROP]` entries. In addition, he has been very
active reviewing Rust code in the mailing list.

He also proposed and implemented the `int_lowest_highest_one` feature
in the Rust standard library [2], which we should eventually use in
the kernel.

His experience maintaining a major Rust GPU driver and the abstractions
it needs will be very useful to have around in the future. Thus add him
to the `RUST` entry as reviewer.

Link: https://rust-for-linux.com/nova-gpu-driver [1]
Link: https://github.com/rust-lang/rust/issues/145203 [2]
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260611055538.61425-3-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-06-11 23:05:48 +02:00
Miguel Ojeda
9310e2e15a MAINTAINERS: add Tamir Duberstein as Rust reviewer
Tamir has been involved with the Rust for Linux project for more than
a year and a half now. He has been working on improving the integration
between the kernel and the Rust language and tooling: he led the effort
to replace the kernel's own `CStr` type with the standard library's,
and reworked the rust-analyzer integration, among other things.

He is already the maintainer of the `RUST [RUST-ANALYZER]` and `XARRAY API
[RUST]` entries. In addition, he has been active reviewing Rust code in
the mailing list.

He is also a long-time contributor to the upstream Rust project, including
on topics that matter for the Linux kernel [1].

His expertise with the language and its tooling will be very useful to
have around in the future. Thus add him to the `RUST` entry as reviewer.

Link: https://github.com/rust-lang/rust/pull/139994 [1]
Acked-by: Tamir Duberstein <tamird@kernel.org>
Acked-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260611055538.61425-2-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-06-11 23:05:48 +02:00
Miguel Ojeda
8f52623e91 MAINTAINERS: add Daniel Almeida as Rust reviewer
Daniel has been involved with the Rust for Linux project for more than
three years now. He is the lead of the Tyr driver for Arm Mali GPUs
[1] and submitted many of the core abstractions that drivers need: the
`irq` module, system resources, `IoMem`, the regulator API, the `bits`
module, the basic USB abstractions... He is also working on the initial
Rust V4L2 support [2].

He is already a maintainer and reviewer of several Rust-related entries,
and he has been very active reviewing Rust code in the mailing list.

His experience building Rust drivers and the APIs they require will be
very useful to have around in the future. Thus add him to the `RUST`
entry as reviewer.

Link: https://rust-for-linux.com/tyr-gpu-driver [1]
Link: https://lore.kernel.org/rust-for-linux/20250818-v4l2-v1-0-6887e772aac2@collabora.com/ [2]
Acked-by: Daniel Almeida <daniel.almeida@collabora.com>
Acked-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260611055538.61425-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-06-11 23:05:47 +02:00
Arnd Bergmann
74b1b75a32 i.MX DT Binding for 7.2
- Add compatible string for TI SN65LVDS93.
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Merge tag 'imx-binding-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/frank.li/linux into soc/dt

i.MX DT Binding for 7.2

- Add compatible string for TI SN65LVDS93.

* tag 'imx-binding-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/frank.li/linux:
  dt-bindings: display/lvds-codec: add ti,sn65lvds93

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2026-06-11 23:01:58 +02:00
Dmitry Torokhov
ff25a3b1cd Input: ipaq-micro-keys - add length check in micro_key_receive
The driver accesses the message payload (msg[0]) without checking if
the length is greater than zero. The parent MFD driver can produce a
payload with a length of 0, in which case msg[0] would be uninitialized
or stale.

Add a check to return early if len is less than 1.

Reported-by: sashiko-bot@kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Link: https://patch.msgid.link/aintAvTyw4CVb5hG@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-06-11 13:52:18 -07:00
Dmitry Torokhov
ed0428e928 Input: ipaq-micro-keys - fix potential deadlock
The driver acquires the micro->lock spinlock in process context (in
micro_key_start() and micro_key_stop()) without disabling interrupts.
However, this lock is also acquired in hardirq context by the MFD core
rx handler (micro_rx_msg()) which is called from the serial ISR.

This can lead to a lock inversion deadlock if the interrupt fires on the
same CPU while the process context holds the lock.

Fix this by using guard(spinlock_irq) instead of guard(spinlock) in
micro_key_start() and micro_key_stop() to disable interrupts while
holding the lock.

Reported-by: sashiko-bot@kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Link: https://patch.msgid.link/aij-pfaKK-Nna7wf@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-06-11 13:52:09 -07:00
Zhao Dongdong
d46f9f2389
ASoC: SOF: topology: fix memory leak in snd_sof_load_topology
When the topology filename contains "dummy" and tplg_cnt is 0, the
function returns -EINVAL directly without freeing the tplg_files
allocated by kcalloc() at line 2497. This leaks memory on every
such topology load attempt.

Fix this by setting ret = -EINVAL and jumping to the out: label,
which already handles the kfree(tplg_files) cleanup.

Fixes: 99c159279c ("ASoC: SOF: don't check the existence of dummy topology")
Cc: stable@vger.kernel.org
Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
Acked-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://patch.msgid.link/tencent_3EED6D778DC52C3703A2D1EE8119372E8E08@qq.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 21:41:33 +01:00
Prasad Bolisetty
cb2c3b5e11 MAINTAINERS: Add Axiado reviewer and Maintainers
Adding 3 new maintainers Prasad,Tzu-Hao, and Karthikeyan
Removed previous maintainer as the previous maintainer moved from project

Signed-off-by: Prasad Bolisetty <pbolisetty@axiado.com>
Acked-by: Harshit Shah <hshah@axiado.com>
Signed-off-by: Tzu-Hao Wei <twei@axiado.com>
Signed-off-by: Karthikeyan Mitran <kmitran@axiado.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2026-06-11 22:28:47 +02:00
Mark Brown
f07dde7074
ASoC: mediatek: Use guard() for mutex & spin locks
bui duc phuc <phucduc.bui@gmail.com> says:

This series converts mutex and spinlock handling in Mediatek ASoC drivers
to use guard() helpers.

Most patches are straightforward conversions to guard() helpers with no
functional change intended.

One exception is mt8192-afe-gpio, where the mutex release point moves from
immediately before dev_warn() to scope exit. However, the affected path
only emits a warning and immediately returns -EINVAL, without any further
processing.

Compile-tested only.

Link: https://patch.msgid.link/20260610102021.83273-1-phucduc.bui@gmail.com
2026-06-11 20:59:21 +01:00
bui duc phuc
62bde3771c
ASoC: mediatek: mt8195: mt8365-dai-i2s: Use guard() for spin locks
Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-11-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:20 +01:00
bui duc phuc
754c2fbf8b
ASoC: mediatek: mt8195: mt8365-dai-adda: Use guard() for spin locks
Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-10-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:19 +01:00
bui duc phuc
befae7299a
ASoC: mediatek: mt8195: mt8365-afe-clk: Use guard() for mutex & spin locks
Clean up the code using guard() for mutex & spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-9-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:19 +01:00
bui duc phuc
a57e39c7ff
ASoC: mediatek: mt8195: mt8195-dai-etdm: Use guard() for spin locks
Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-8-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:18 +01:00
bui duc phuc
a9f8d09ab1
ASoC: mediatek: mt8195: mt8195-afe-clk: Use guard() for spin locks
Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-7-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:17 +01:00
bui duc phuc
14edf39dae
ASoC: mediatek: mt8192: mt8192-afe-gpio: Use guard() for mutex locks
Convert the explicit mutex_lock()/mutex_unlock() pair to guard(mutex)
to simplify the locking logic and automatically release the mutex on
all exit paths.

This changes the mutex release point from immediately before dev_warn()
to automatic cleanup at scope exit. However, the affected path only emits
a warning and immediately returns -EINVAL, without any further processing.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-6-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:16 +01:00
bui duc phuc
cc29c31e87
ASoC: mediatek: mt8188: mt8188-afe-clk: Use guard() for spin locks
Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-5-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:15 +01:00
bui duc phuc
1e9f4587c8
ASoC: mediatek: mt8186: mt8186-afe-gpio: Use guard() for mutex locks
Clean up the code using guard() for mutex locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-4-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:14 +01:00
bui duc phuc
c69724b714
ASoC: mediatek: common: mtk-btcvsd: Use guard() for spin locks
Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-3-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:14 +01:00
bui duc phuc
9475859429
ASoC: mediatek: common: mtk-afe-fe-dai: Use guard() for mutex locks
Clean up the code using guard() for mutex locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260610102021.83273-2-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:59:13 +01:00
Arnd Bergmann
065f978a0e lib/crypto: gf128hash: mark clmul32() as noinline_for_stack
During randconfig testing, I came across a lot of warnings for the newly
added carryless multiplication function triggering excessive stack usage
from spilling temporary variables to the stack:

lib/crypto/gf128hash.c:166:1: error: stack frame size (1192) exceeds limit (1024) in 'polyval_mul_generic' [-Werror,-Wframe-larger-than]

In addition to the possible risk of overflowing the kernel stack,
the generated object code surely performs very poorly.

This only happens on architectures that don't provide uint128_t
(which should be all 32-bit architectures on modern compilers), but
though I tested random x86 and arm configs, I only saw this with arm's
CONFIG_THUMB2_KERNEL, which adds more pressure to the register allocator.

The testing was done using clang-22, I don't know if gcc has the same
problem. Marking clmul32() as noinline_for_stack experimentally shows
all of the affected builds to completely solve the problem, reducing
the stack usage to a few bytes as expected.

Since u64 arithmetic frequently leads to compilers badly optimizing
32-bit targets, keeping clmul32 out of line is likely to help on
other 32-bit configurations as well when they run into this problem,
though it may also result in a small performance degradation in
configurations that would benefit from inlining.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260611125952.3387258-1-arnd@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2026-06-11 12:57:49 -07:00
Mark Brown
5542791d50
ASoC: rockchip: Use guard() for spin locks
bui duc phuc <phucduc.bui@gmail.com> says:

This series converts spinlock handling in the Rockchip sound drivers
to use guard() helpers.
The changes are code cleanup only and should have no functional impact.

Link: https://patch.msgid.link/20260604033554.96996-1-phucduc.bui@gmail.com
2026-06-11 20:50:31 +01:00
bui duc phuc
f7fe9f7073
ASoC: rockchip: rockchip_sai: Use guard() for spin locks
Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260604033554.96996-4-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:50:30 +01:00
bui duc phuc
ec22437fc4
ASoC: rockchip: i2s-tdm: Use guard() for spin locks
Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260604033554.96996-3-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:50:29 +01:00
bui duc phuc
4bda5af169
ASoC: rockchip: rockchip_i2s: Use guard() for spin locks
Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260604033554.96996-2-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:50:28 +01:00
Mark Brown
4263ed78c5
ASoC: rockchip: Reorder clock enable sequence
bui duc phuc <phucduc.bui@gmail.com> says:

This series reorders the runtime resume clock enable sequence in the
Rockchip SPDIF and PDM drivers to enable the bus clock before the
functional controller clock.

It also updates the SPDIF DT binding clock descriptions to match the
actual clock usage in the driver.

Additionally, this v2 adds two new patches addressing issues reported
by the Sashiko AI Review tool regarding regcache sync failure handling
and runtime PM resume status validation.

Testing:
  - Patch 1: Verified (dt_binding_check passed).
  - Patches 2 to 5: Compile tested only. Please help test if you have
    the relevant Rockchip hardware.

Link: https://patch.msgid.link/20260602101608.45137-1-phucduc.bui@gmail.com
2026-06-11 20:49:43 +01:00
bui duc phuc
ee7b5f7b39
ASoC: rockchip: rockchip_pdm: Handle runtime PM resume failures in set_fmt
rockchip_pdm_set_fmt() calls pm_runtime_get_sync() before accessing
hardware registers, but ignores its return value.
If the runtime resume fails, the function continues to perform register
accesses while the device state is undefined.
Replace pm_runtime_get_sync() with pm_runtime_resume_and_get() and
return early on failure to avoid unpowered register accesses.

Reported-by: Sashiko AI Review <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260522110302.349421F000E9@smtp.kernel.org/
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260602101608.45137-6-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:49:42 +01:00
bui duc phuc
3546e9aa69
ASoC: rockchip: spdif: Restore regcache cache-only mode on sync failure
If regcache_sync() fails during runtime resume, the driver disables the
clocks and returns an error. However, the regmap cache-only mode is left
disabled.
Restore cache-only mode in the error path so subsequent register accesses
continue to use the cache while the device is inactive.

Reported-by: Sashiko AI Review <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260522103713.6C09D1F000E9@smtp.kernel.org/
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260602101608.45137-5-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:49:41 +01:00
bui duc phuc
3168721d6e
ASoC: rockchip: rockchip_pdm: Reorder clock enable sequence
Enable the 'hclk' bus clock before the 'clk' controller clock during
runtime resume.
The bus clock provides the register access interface, so enable it before
the controller clock. This also makes the resume sequence the reverse of
the suspend sequence, which keeps the clock ordering consistent.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260602101608.45137-4-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:49:40 +01:00
bui duc phuc
74d3f01a90
ASoC: rockchip: spdif: Reorder clock enable sequence
Enable the 'hclk' bus clock before the 'mclk' controller clock during
runtime resume.
The bus clock provides the register access interface, so enable it before
the controller clock. This also makes the resume sequence the reverse of
the suspend sequence, which keeps the clock ordering consistent.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260602101608.45137-3-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:49:39 +01:00
bui duc phuc
d057cbc218
ASoC: dt-bindings: rockchip-spdif: Correct SPDIF clock descriptions
Update the binding descriptions to match the actual clock usage, where
'mclk' is the controller clock and 'hclk' is the bus clock.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260602101608.45137-2-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:49:39 +01:00
Sen Wang
216f7452a6
ASoC: ti: davinci-mcasp: Add audio-graph-card2 and DPCM support
Extend the McASP driver to support audio-graph-card2 of-graph topology,
while maintaining backwards compatibility for existing simple-audio-card
phandles and machine drivers, which now uses the default MCASP_GRAPH_NONE
code path.

Signed-off-by: Sen Wang <sen@ti.com>
Link: https://patch.msgid.link/20260603211835.635184-1-sen@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:48:11 +01:00
Cássio Gabriel
b7e44d1986
ASoC: topology: Check PCM and DAI name strings before use
Topology objects store several PCM and DAI names in fixed-size UAPI
arrays. Other topology parser paths validate these fields with bounded
strnlen() checks before using them as C strings, but the PCM and DAI
paths still pass some fixed-size arrays directly to strlen(),
devm_kstrdup(), DAI lookup, and diagnostic prints.

A malformed topology blob with a non-NUL-terminated PCM, DAI, or stream
capability name can therefore make the parser read past the end of the
fixed-size field.

Reject unterminated PCM and DAI name fields before consuming them as C
strings.

Fixes: 64527e8a35 ("ASoC: topology: Add FE DAIs dynamically")
Fixes: acfc7d46cd ("ASoC: topology: Add FE DAI links dynamically")
Fixes: 0038be9a84 ("ASoC: topology: Add support for configuring existing BE DAIs")
Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Link: https://patch.msgid.link/20260604-asoc-topology-check-pcm-dai-names-v1-1-e1b0f6f7c2ce@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:47:42 +01:00
Charles Keepax
890b61d3a8
ASoC: cs35l56: Remove unnecessary conditionals waiting for enumeration
Commit [1] updated the core to use complete_all() which means that
the wait_for_completion() will now simply return if the device
is already attached, so skipping the completion isn't required
anymore.  Update the code to simply call sdw_slave_wait_for_init()
unconditionally.

[1] c40d6b3249 ("soundwire: fix enumeration completion")

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Link: https://patch.msgid.link/20260608102714.2503120-11-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-06-11 20:46:55 +01:00