Commit graph

1,398,639 commits

Author SHA1 Message Date
Michal Schmidt
1e43ebcd51 iavf: Implement settime64 with -EOPNOTSUPP
ptp_clock_settime() assumes every ptp_clock has implemented settime64().
Stub it with -EOPNOTSUPP to prevent a NULL dereference.

The fix is similar to commit 329d050bbe ("gve: Implement settime64
with -EOPNOTSUPP").

Fixes: d734223b2f ("iavf: add initial framework for registering PTP clock")
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Tim Hostetler <thostet@google.com>
Link: https://patch.msgid.link/20251126094850.2842557-1-mschmidt@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-27 17:47:28 -08:00
Linus Torvalds
1f5e808aa6 Including fixes from bluetooth and CAN. No known outstanding
regressions.
 
 Current release - regressions:
 
   - mptcp: initialize rcv_mss before calling tcp_send_active_reset()
 
   - eth: mlx5e: fix validation logic in rate limiting
 
 Previous releases - regressions:
 
   - xsk: avoid data corruption on cq descriptor number
 
   - bluetooth:
     - prevent race in socket write iter and sock bind
     - fix not generating mackey and ltk when repairing
 
   - can:
     - kvaser_usb: fix potential infinite loop in command parsers
     - rcar_canfd: fix CAN-FD mode as default
 
   - eth: veth: reduce XDP no_direct return section to fix race
 
   - eth: virtio-net: avoid unnecessary checksum calculation on guest RX
 
 Previous releases - always broken:
 
   - sched: fix TCF_LAYER_TRANSPORT handling in tcf_get_base_ptr()
 
   - bluetooth: mediatek: fix kernel crash when releasing iso interface
 
   - vhost: rewind next_avail_head while discarding descriptors
 
   - eth: r8169: fix RTL8127 hang on suspend/shutdown
 
   - eth: aquantia: add missing descriptor cache invalidation on ATL2
 
   - dsa: microchip: fix resource releases in error path
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCgAwFiEEg1AjqC77wbdLX2LbKSR5jcyPE6QFAmkoYU0SHHBhYmVuaUBy
 ZWRoYXQuY29tAAoJECkkeY3MjxOkKXoQALd11FrsOuRQ9VH7pv5gtOkvPvdAq/q0
 ZSrqaK+/sIEAm8X4OtmuzZCMM0cjsbptZ7Lcs84SlqarHj86I7O0NgRzHrE5oy5u
 kK/aWcK8FNMt0h/EMPpm9sZbEjbCjT1T6k5+lpvJja5LD+aJXG2BnYxEPBFxyx/z
 Au1fq8PxJTmQIAEVVlgRbCW56zaoYsic45YdQJstIfVDLi34tjm76hz97m2bUEj5
 wnCrEN5Ghmn8tcuTsTv5OHEkIKXSBUpuctsviOqIgMTDquOrMa/4niSVp7N116tJ
 3oOTRer38MEoI7uMAuQFP4NmaMWQcAs/ky3gFdepX81iiIXEIP/PEHucXVWCTU6N
 m13TmCN7gFRNPOvFgVlWIPEMJDOkblnEvL8Mw7ux0sd235Cf8BzLiPU+XaeGo4JN
 wfRit/7tzTAtP5Ft9nqT/7Cl9gshD+9/jG6binKoY1JG2aMHovYC1LmdVPYvkp25
 hMGFaryZuCcGmVnWbHzwn00JWArdy5TZTEfGZvqUQsoHyPHkPrt5STpNpl3WWrzV
 yjp0RxVeVF7VThm/4m2Jq17Fo7RUimo/EIosbbaqWFYZTJBM7gU6VvYca9Q0kKdW
 SjzZ8Eq3G0eqWYhk1ZFvlEcZkkZNpCpb8YzWibscDCEj1Ugv6fiNXswlz5IZb+jF
 UuXeTpCOEgQY
 =0MuR
 -----END PGP SIGNATURE-----

Merge tag 'net-6.18-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from bluetooth and CAN. No known outstanding
  regressions.

  Current release - regressions:

   - mptcp: initialize rcv_mss before calling tcp_send_active_reset()

   - eth: mlx5e: fix validation logic in rate limiting

  Previous releases - regressions:

   - xsk: avoid data corruption on cq descriptor number

   - bluetooth:
       - prevent race in socket write iter and sock bind
       - fix not generating mackey and ltk when repairing

   - can:
       - kvaser_usb: fix potential infinite loop in command parsers
       - rcar_canfd: fix CAN-FD mode as default

   - eth:
       - veth: reduce XDP no_direct return section to fix race
       - virtio-net: avoid unnecessary checksum calculation on guest RX

  Previous releases - always broken:

   - sched: fix TCF_LAYER_TRANSPORT handling in tcf_get_base_ptr()

   - bluetooth: mediatek: fix kernel crash when releasing iso interface

   - vhost: rewind next_avail_head while discarding descriptors

   - eth:
       - r8169: fix RTL8127 hang on suspend/shutdown
       - aquantia: add missing descriptor cache invalidation on ATL2

   - dsa: microchip: fix resource releases in error path"

* tag 'net-6.18-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (47 commits)
  mptcp: Initialise rcv_mss before calling tcp_send_active_reset() in mptcp_do_fastclose().
  net: fec: do not register PPS event for PEROUT
  net: fec: do not allow enabling PPS and PEROUT simultaneously
  net: fec: do not update PEROUT if it is enabled
  net: fec: cancel perout_timer when PEROUT is disabled
  net: mctp: unconditionally set skb->dev on dst output
  net: atlantic: fix fragment overflow handling in RX path
  MAINTAINERS: separate VIRTIO NET DRIVER and add netdev
  virtio-net: avoid unnecessary checksum calculation on guest RX
  eth: fbnic: Fix counter roll-over issue
  mptcp: clear scheduled subflows on retransmit
  net: dsa: sja1105: fix SGMII linking at 10M or 100M but not passing traffic
  s390/net: list Aswin Karuvally as maintainer
  net: wwan: mhi: Keep modem name match with Foxconn T99W640
  vhost: rewind next_avail_head while discarding descriptors
  net/sched: em_canid: fix uninit-value in em_canid_match
  can: rcar_canfd: Fix CAN-FD mode as default
  xsk: avoid data corruption on cq descriptor number
  r8169: fix RTL8127 hang on suspend/shutdown
  net: sxgbe: fix potential NULL dereference in sxgbe_rx()
  ...
2025-11-27 09:18:40 -08:00
Linus Torvalds
a76dce0e54 platform-drivers-x86 for v6.18-5
Fixes:
 
 - arm64/thinkpad-t14s-ec:
 
   - Fix IRQ race condition
 
   - Sleep after EC access
 
 - intel/punit_ipc: Fix memory corruption
 
 The following is an automated shortlog grouped by driver:
 
 arm64: thinkpad-t14s-ec:
  -  fix IRQ race condition
  -  sleep after EC access
 
 intel: punit_ipc:
  -  fix memory corruption
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCaSgbXwAKCRBZrE9hU+XO
 Mf1jAP4keEVLT+WwwyY8rkrGClS/tDb+HVJBVGFo1WnMvIL5/QD/QfaPhZf1jjQs
 YMCURKqB4jknkFTRWyeGKA/jEZuKdQw=
 =eczG
 -----END PGP SIGNATURE-----

Merge tag 'platform-drivers-x86-v6.18-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull platform driver fixes from Ilpo Järvinen:

 - arm64/thinkpad-t14s-ec:
    - Fix IRQ race condition
    - Sleep after EC access

 - intel/punit_ipc: Fix memory corruption

* tag 'platform-drivers-x86-v6.18-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86: intel: punit_ipc: fix memory corruption
  platform: arm64: thinkpad-t14s-ec: sleep after EC access
  platform: arm64: thinkpad-t14s-ec: fix IRQ race condition
2025-11-27 08:51:36 -08:00
Kuniyuki Iwashima
f07f4ea53e mptcp: Initialise rcv_mss before calling tcp_send_active_reset() in mptcp_do_fastclose().
syzbot reported divide-by-zero in __tcp_select_window() by
MPTCP socket. [0]

We had a similar issue for the bare TCP and fixed in commit
499350a5a6 ("tcp: initialize rcv_mss to TCP_MIN_MSS instead
of 0").

Let's apply the same fix to mptcp_do_fastclose().

[0]:
Oops: divide error: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6068 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__tcp_select_window+0x824/0x1320 net/ipv4/tcp_output.c:3336
Code: ff ff ff 44 89 f1 d3 e0 89 c1 f7 d1 41 01 cc 41 21 c4 e9 a9 00 00 00 e8 ca 49 01 f8 e9 9c 00 00 00 e8 c0 49 01 f8 44 89 e0 99 <f7> 7c 24 1c 41 29 d4 48 bb 00 00 00 00 00 fc ff df e9 80 00 00 00
RSP: 0018:ffffc90003017640 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88807b469e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003017730 R08: ffff888033268143 R09: 1ffff1100664d028
R10: dffffc0000000000 R11: ffffed100664d029 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055557faa0500(0000) GS:ffff888126135000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f64a1912ff8 CR3: 0000000072122000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 tcp_select_window net/ipv4/tcp_output.c:281 [inline]
 __tcp_transmit_skb+0xbc7/0x3aa0 net/ipv4/tcp_output.c:1568
 tcp_transmit_skb net/ipv4/tcp_output.c:1649 [inline]
 tcp_send_active_reset+0x2d1/0x5b0 net/ipv4/tcp_output.c:3836
 mptcp_do_fastclose+0x27e/0x380 net/mptcp/protocol.c:2793
 mptcp_disconnect+0x238/0x710 net/mptcp/protocol.c:3253
 mptcp_sendmsg_fastopen+0x2f8/0x580 net/mptcp/protocol.c:1776
 mptcp_sendmsg+0x1774/0x1980 net/mptcp/protocol.c:1855
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0xe5/0x270 net/socket.c:742
 __sys_sendto+0x3bd/0x520 net/socket.c:2244
 __do_sys_sendto net/socket.c:2251 [inline]
 __se_sys_sendto net/socket.c:2247 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2247
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f66e998f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffff9acedb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f66e9be5fa0 RCX: 00007f66e998f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007ffff9acee10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f66e9be5fa0 R14: 00007f66e9be5fa0 R15: 0000000000000006
 </TASK>

Fixes: ae15506024 ("mptcp: fix duplicate reset on fastclose")
Reported-by: syzbot+3a92d359bc2ec6255a33@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/69260882.a70a0220.d98e3.00b4.GAE@google.com/
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20251125195331.309558-1-kuniyu@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-27 13:10:16 +01:00
Paolo Abeni
36d7478664 Merge branch 'net-fec-fix-some-ptp-related-issues'
Wei Fang says:

====================
net: fec: fix some PTP related issues

There are some issues which were introduced by the commit 350749b909
("net: fec: Add support for periodic output signal of PPS"). See each
patch for more details.
====================

Link: https://patch.msgid.link/20251125085210.1094306-1-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-27 11:57:47 +01:00
Wei Fang
9a060d0fac net: fec: do not register PPS event for PEROUT
There are currently two situations that can trigger the PTP interrupt,
one is the PPS event, the other is the PEROUT event. However, the irq
handler fec_pps_interrupt() does not check the irq event type and
directly registers a PPS event into the system, but the event may be
a PEROUT event. This is incorrect because PEROUT is an output signal,
while PPS is the input of the kernel PPS system. Therefore, add a check
for the event type, if pps_enable is true, it means that the current
event is a PPS event, and then the PPS event is registered.

Fixes: 350749b909 ("net: fec: Add support for periodic output signal of PPS")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20251125085210.1094306-5-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-27 11:57:45 +01:00
Wei Fang
c0a1f3d7e1 net: fec: do not allow enabling PPS and PEROUT simultaneously
In the current driver, PPS and PEROUT use the same channel to generate
the events, so they cannot be enabled at the same time. Otherwise, the
later configuration will overwrite the earlier configuration. Therefore,
when configuring PPS, the driver will check whether PEROUT is enabled.
Similarly, when configuring PEROUT, the driver will check whether PPS
is enabled.

Fixes: 350749b909 ("net: fec: Add support for periodic output signal of PPS")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20251125085210.1094306-4-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-27 11:57:45 +01:00
Wei Fang
e97faa0c20 net: fec: do not update PEROUT if it is enabled
If the previously set PEROUT is already active, updating it will cause
the new PEROUT to start immediately instead of at the specified time.
This is because fep->reload_period is updated whithout check whether
the PEROUT is enabled, and the old PEROUT is not disabled. Therefore,
the pulse period will be updated immediately in the pulse interrupt
handler fec_pps_interrupt().

Currently, the driver does not support directly updating PEROUT and it
will make the logic be more complicated. To fix the current issue, add
a check before enabling the PEROUT, the driver will return an error if
PEROUT is enabled. If users wants to update a new PEROUT, they should
disable the old PEROUT first.

Fixes: 350749b909 ("net: fec: Add support for periodic output signal of PPS")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20251125085210.1094306-3-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-27 11:57:45 +01:00
Wei Fang
50caa74468 net: fec: cancel perout_timer when PEROUT is disabled
The PEROUT allows the user to set a specified future time to output the
periodic signal. If the future time is far from the current time, the FEC
driver will use hrtimer to configure PEROUT one second before the future
time. However, the hrtimer will not be canceled if the PEROUT is disabled
before the hrtimer expires. So the PEROUT will be configured when the
hrtimer expires, which is not as expected. Therefore, cancel the hrtimer
in fec_ptp_pps_disable() to fix this issue.

Fixes: 350749b909 ("net: fec: Add support for periodic output signal of PPS")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20251125085210.1094306-2-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-27 11:57:45 +01:00
Jeremy Kerr
b3e528a581 net: mctp: unconditionally set skb->dev on dst output
On transmit, we are currently relying on skb->dev being set by
mctp_local_output() when we first set up the skb destination fields.
However, forwarded skbs do not use the local_output path, so will retain
their incoming netdev as their ->dev on tx. This does not work when
we're forwarding between interfaces.

Set skb->dev unconditionally in the transmit path, to allow for proper
forwarding.

We keep the skb->dev initialisation in mctp_local_output(), as we use it
for fragmentation.

Fixes: 269936db5e ("net: mctp: separate routing database from routing operations")
Suggested-by: Vince Chang <vince_chang@aspeedtech.com>
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://patch.msgid.link/20251125-dev-forward-v1-1-54ecffcd0616@codeconstruct.com.au
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-27 11:39:12 +01:00
Linus Torvalds
765e56e41a smb client mount fix
-----BEGIN PGP SIGNATURE-----
 
 iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmknmAUACgkQiiy9cAdy
 T1FamAv+NWPndWOfpABbaE8EIQLnrhV3WVzDGWZxfnNp451DSPl9IZmQC7vNq5GD
 1dtR8o1JBtRgpXqypZ88GFMku+iXMBFQN+2x0TPwXcDlPM9F9s9ORab2iovQ+cmc
 G53blZiHO7UpWznC8qZVmgT8aK7oEs8zE5tdARNqe/EjO7RRrF7fCZ8BwBKMNO1X
 rVZWceJ0l8ohX7/DzhsdAXly/tkH+Z1iARtxdQOH6FP1HGYMYun29dwxf69ezMTq
 yt/EE0bausWV/3XB+dnkKQSq8OHdQcFbA6GNqYsNqA+KJRS+GxcWqZwE7pT2N9V6
 fBYQgmGrtzmPC77W+HL43WEP1heQaYZuKIpy0bXY1pufarCoffYUI1zCvdDOoc5z
 nTJzFoWTQ+Wrgi/3Xe/9DgjT5jXXP4Nit+vsEzDgaCEgbxIQzLl6MeW2cU4SiHGX
 tNHIMeYzNxwNTmNGH28f6Y5Z/w6G0gmiOSHHPnNzcCp6Xh5kpOBogssOcdU2tdsT
 ttVs0qac
 =guGI
 -----END PGP SIGNATURE-----

Merge tag 'v6.18rc7-SMB-client-fix' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fix from Steve French:
 "smb client multiuser (with cifscreds) mount fix"

* tag 'v6.18rc7-SMB-client-fix' of git://git.samba.org/sfrench/cifs-2.6:
  smb: client: fix memory leak in cifs_construct_tcon()
2025-11-26 20:22:20 -08:00
Jakub Kicinski
8ec205e879 linux-can-fixes-for-6.18-20251126
-----BEGIN PGP SIGNATURE-----
 
 iQFHBAABCgAxFiEEn/sM2K9nqF/8FWzzDHRl3/mQkZwFAmknHroTHG1rbEBwZW5n
 dXRyb25peC5kZQAKCRAMdGXf+ZCRnENfCACmEL7NELoRi3RvXzlYOjDi0aEW2C79
 k9hPBkzBor/W9JhBOf7+3nbDiL8nJdMQIs3FY6X/OSgyxEvGwgXb+PiFVBaHtDmx
 PvJb7PjwNjpm4GnoPlQVUGBZxH4fDWz7JS34M1+BbY8k1ajN6ndHURHE6rtGMFIM
 obClghS9i4K/Uww/bpSzj5cU4AmIuLIU8X6Oqq2X1PacgtGYP8WNh/eQ1xk03Nt8
 RxrU0XTkPTsbS74Y4h+1bwNhxMwjLA97f2GgZ6GUa22lrzDnBpfqpBWSy0xIDJTe
 GZgKpBOhbFSRjPH8f89cRXz47jvMfReC05ccuKC82+RK94Yge8F1YIxP
 =HPfp
 -----END PGP SIGNATURE-----

Merge tag 'linux-can-fixes-for-6.18-20251126' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2025-11-26

this is a pull request of 8 patches for net/main.

Seungjin Bae provides a patch for the kvaser_usb driver to fix a
potential infinite loop in the USB data stream command parser.

Thomas Mühlbacher's patch for the sja1000 driver IRQ handler's max
loop handling, that might lead to unhandled interrupts.

3 patches by me for the gs_usb driver fix handling of failed transmit
URBs and add checking of the actual length of received URBs before
accessing the data.

The next patch is by me and is a port of Thomas Mühlbacher's patch
(fix IRQ handler's max loop handling, that might lead to unhandled
interrupts.) to the sun4i_can driver.

Biju Das provides a patch for the rcar_canfd driver to fix the CAN-FD
mode setting.

The last patch is by Shaurya Rane for the em_canid filter to ensure
that the complete CAN frame is present in the linear data buffer
before accessing it.

* tag 'linux-can-fixes-for-6.18-20251126' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
  net/sched: em_canid: fix uninit-value in em_canid_match
  can: rcar_canfd: Fix CAN-FD mode as default
  can: sun4i_can: sun4i_can_interrupt(): fix max irq loop handling
  can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing data
  can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header
  can: gs_usb: gs_usb_xmit_callback(): fix handling of failed transmitted URBs
  can: sja1000: fix max irq loop handling
  can: kvaser_usb: leaf: Fix potential infinite loop in command parsers
====================

Link: https://patch.msgid.link/20251126155713.217105-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 19:56:00 -08:00
Jiefeng Zhang
5ffcb7b890 net: atlantic: fix fragment overflow handling in RX path
The atlantic driver can receive packets with more than MAX_SKB_FRAGS (17)
fragments when handling large multi-descriptor packets. This causes an
out-of-bounds write in skb_add_rx_frag_netmem() leading to kernel panic.

The issue occurs because the driver doesn't check the total number of
fragments before calling skb_add_rx_frag(). When a packet requires more
than MAX_SKB_FRAGS fragments, the fragment index exceeds the array bounds.

Fix by assuming there will be an extra frag if buff->len > AQ_CFG_RX_HDR_SIZE,
then all fragments are accounted for. And reusing the existing check to
prevent the overflow earlier in the code path.

This crash occurred in production with an Aquantia AQC113 10G NIC.

Stack trace from production environment:
```
RIP: 0010:skb_add_rx_frag_netmem+0x29/0xd0
Code: 90 f3 0f 1e fa 0f 1f 44 00 00 48 89 f8 41 89
ca 48 89 d7 48 63 ce 8b 90 c0 00 00 00 48 c1 e1 04 48 01 ca 48 03 90
c8 00 00 00 <48> 89 7a 30 44 89 52 3c 44 89 42 38 40 f6 c7 01 75 74 48
89 fa 83
RSP: 0018:ffffa9bec02a8d50 EFLAGS: 00010287
RAX: ffff925b22e80a00 RBX: ffff925ad38d2700 RCX:
fffffffe0a0c8000
RDX: ffff9258ea95bac0 RSI: ffff925ae0a0c800 RDI:
0000000000037a40
RBP: 0000000000000024 R08: 0000000000000000 R09:
0000000000000021
R10: 0000000000000848 R11: 0000000000000000 R12:
ffffa9bec02a8e24
R13: ffff925ad8615570 R14: 0000000000000000 R15:
ffff925b22e80a00
FS: 0000000000000000(0000)
GS:ffff925e47880000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff9258ea95baf0 CR3: 0000000166022004 CR4:
0000000000f72ef0
PKRU: 55555554
Call Trace:
<IRQ>
aq_ring_rx_clean+0x175/0xe60 [atlantic]
? aq_ring_rx_clean+0x14d/0xe60 [atlantic]
? aq_ring_tx_clean+0xdf/0x190 [atlantic]
? kmem_cache_free+0x348/0x450
? aq_vec_poll+0x81/0x1d0 [atlantic]
? __napi_poll+0x28/0x1c0
? net_rx_action+0x337/0x420
```

Fixes: 6aecbba12b ("net: atlantic: add check for MAX_SKB_FRAGS")
Changes in v4:
- Add Fixes: tag to satisfy patch validation requirements.

Changes in v3:
- Fix by assuming there will be an extra frag if buff->len > AQ_CFG_RX_HDR_SIZE,
  then all fragments are accounted for.

Signed-off-by: Jiefeng Zhang <jiefeng.z.zhang@gmail.com>
Link: https://patch.msgid.link/20251126032249.69358-1-jiefeng.z.zhang@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 19:52:49 -08:00
Jon Kohler
384c1a4e27 MAINTAINERS: separate VIRTIO NET DRIVER and add netdev
Changes to virtio network stack should be cc'd to netdev DL, separate
it into its own group to add netdev in addition to virtualization DL.

Signed-off-by: Jon Kohler <jon@nutanix.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://patch.msgid.link/20251126015750.2200267-1-jon@nutanix.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 19:48:34 -08:00
Jon Kohler
1cd1c47234 virtio-net: avoid unnecessary checksum calculation on guest RX
Commit a2fb4bc4e2 ("net: implement virtio helpers to handle UDP
GSO tunneling.") inadvertently altered checksum offload behavior
for guests not using UDP GSO tunneling.

Before, tun_put_user called tun_vnet_hdr_from_skb, which passed
has_data_valid = true to virtio_net_hdr_from_skb.

After, tun_put_user began calling tun_vnet_hdr_tnl_from_skb instead,
which passes has_data_valid = false into both call sites.

This caused virtio hdr flags to not include VIRTIO_NET_HDR_F_DATA_VALID
for SKBs where skb->ip_summed == CHECKSUM_UNNECESSARY. As a result,
guests are forced to recalculate checksums unnecessarily.

Restore the previous behavior by ensuring has_data_valid = true is
passed in the !tnl_gso_type case, but only from tun side, as
virtio_net_hdr_tnl_from_skb() is used also by the virtio_net driver,
which in turn must not use VIRTIO_NET_HDR_F_DATA_VALID on tx.

cc: stable@vger.kernel.org
Fixes: a2fb4bc4e2 ("net: implement virtio helpers to handle UDP GSO tunneling.")
Signed-off-by: Jon Kohler <jon@nutanix.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://patch.msgid.link/20251125222754.1737443-1-jon@nutanix.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 19:45:54 -08:00
Mohsin Bashir
6d66e093e0 eth: fbnic: Fix counter roll-over issue
Fix a potential counter roll-over issue in fbnic_mbx_alloc_rx_msgs()
when calculating descriptor slots. The issue occurs when head - tail
results in a large positive value (unsigned) and the compiler interprets
head - tail - 1 as a signed value.

Since FBNIC_IPC_MBX_DESC_LEN is a power of two, use a masking operation,
which is a common way of avoiding this problem when dealing with these
sort of ring space calculations.

Fixes: da3cde0820 ("eth: fbnic: Add FW communication mechanism")
Signed-off-by: Mohsin Bashir <mohsin.bashr@gmail.com>
Link: https://patch.msgid.link/20251125211704.3222413-1-mohsin.bashr@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 18:25:52 -08:00
Paolo Abeni
27fd028601 mptcp: clear scheduled subflows on retransmit
When __mptcp_retrans() kicks-in, it schedules one or more subflows for
retransmission, but such subflows could be actually left alone if there
is no more data to retransmit and/or in case of concurrent fallback.

Scheduled subflows could be processed much later in time, i.e. when new
data will be transmitted, leading to bad subflow selection.

Explicitly clear all scheduled subflows before leaving the
retransmission function.

Fixes: ee2708aeda ("mptcp: use get_retrans wrapper")
Cc: stable@vger.kernel.org
Reported-by: Filip Pokryvka <fpokryvk@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20251125-net-mptcp-clear-sched-rtx-v1-1-1cea4ad2165f@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 18:24:35 -08:00
Vladimir Oltean
da62abaaa2 net: dsa: sja1105: fix SGMII linking at 10M or 100M but not passing traffic
When using the SGMII PCS as a fixed-link chip-to-chip connection, it is
easy to miss the fact that traffic passes only at 1G, since that's what
any normal such connection would use.

When using the SGMII PCS connected towards an on-board PHY or an SFP
module, it is immediately noticeable that when the link resolves to a
speed other than 1G, traffic from the MAC fails to pass: TX counters
increase, but nothing gets decoded by the other end, and no local RX
counters increase either.

Artificially lowering a fixed-link rate to speed = <100> makes us able
to see the same issue as in the case of having an SGMII PHY.

Some debugging shows that the XPCS configuration is A-OK, but that the
MAC Configuration Table entry for the port has the SPEED bits still set
to 1000Mbps, due to a special condition in the driver. Deleting that
condition, and letting the resolved link speed be programmed directly
into the MAC speed field, results in a functional link at all 3 speeds.

This piece of evidence, based on testing on both generations with SGMII
support (SJA1105S and SJA1110A) directly contradicts the statement from
the blamed commit that "the MAC is fixed at 1 Gbps and we need to
configure the PCS only (if even that)". Worse, that statement is not
backed by any documentation, and no one from NXP knows what it might
refer to.

I am unable to recall sufficient context regarding my testing from March
2020 to understand what led me to draw such a braindead and factually
incorrect conclusion. Yet, there is nothing of value regarding forcing
the MAC speed, either for SGMII or 2500Base-X (introduced at a later
stage), so remove all such logic.

Fixes: ffe10e679c ("net: dsa: sja1105: Add support for the SGMII port")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20251122111324.136761-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 18:18:28 -08:00
Alexandra Winter
b9ba6338bc s390/net: list Aswin Karuvally as maintainer
Thank you Aswin for taking this responsibility.

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Acked-by: Aswin Karuvally <aswin@linux.ibm.com>
Link: https://patch.msgid.link/20251125085829.3679506-1-wintera@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 17:13:57 -08:00
Slark Xiao
4fcb8ab4a0 net: wwan: mhi: Keep modem name match with Foxconn T99W640
Correct it since M.2 device T99W640 has updated from T99W515.
We need to align it with MHI side otherwise this modem can't
get the network.

Fixes: ae5a342643 ("bus: mhi: host: pci_generic: Fix the modem name of Foxconn T99W640")
Signed-off-by: Slark Xiao <slark_xiao@163.com>
Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Link: https://patch.msgid.link/20251125070900.33324-1-slark_xiao@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 17:04:07 -08:00
Jason Wang
779bcdd4b9 vhost: rewind next_avail_head while discarding descriptors
When discarding descriptors with IN_ORDER, we should rewind
next_avail_head otherwise it would run out of sync with
last_avail_idx. This would cause driver to report
"id X is not a head".

Fixing this by returning the number of descriptors that is used for
each buffer via vhost_get_vq_desc_n() so caller can use the value
while discarding descriptors.

Fixes: 67a873df0c ("vhost: basic in order support")
Cc: stable@vger.kernel.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://patch.msgid.link/20251120022950.10117-1-jasowang@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-26 14:44:58 -08:00
Linus Torvalds
4941a17751 ring-buffer fixes for v6.18:
- Do not allow mmapped ring buffer to be split
 
   When the ring buffer VMA is split by a partial munmap or a MAP_FIXED, the
   kernel calls vm_ops->close() on each portion. This causes the
   ring_buffer_unmap() to be called multiple times. This causes subsequent
   calls to return -ENODEV and triggers a warning.
 
   There's no reason to allow user space to split up memory mapping of the
   ring buffer. Have it return -EINVAL when that happens.
 -----BEGIN PGP SIGNATURE-----
 
 iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCaSdimBQccm9zdGVkdEBn
 b29kbWlzLm9yZwAKCRAp5XQQmuv6qucgAP9FFI/yHHS7HpZVKokH5Dcw1ORekdFd
 ZXX1fi3RNXGj/wD8DwBv42yaYPzL41muagmaV1NoNezwqYN5tFsHe5PxcAY=
 =6iCY
 -----END PGP SIGNATURE-----

Merge tag 'trace-ringbuffer-v6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull ring-buffer fix from Steven Rostedt:

 - Do not allow mmapped ring buffer to be split

   When the ring buffer VMA is split by a partial munmap or a MAP_FIXED,
   the kernel calls vm_ops->close() on each portion. This causes the
   ring_buffer_unmap() to be called multiple times. This causes
   subsequent calls to return -ENODEV and triggers a warning.

   There's no reason to allow user space to split up memory mapping of
   the ring buffer. Have it return -EINVAL when that happens.

* tag 'trace-ringbuffer-v6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: Fix WARN_ON in tracing_buffers_mmap_close for split VMAs
2025-11-26 13:16:22 -08:00
Linus Torvalds
9eb220eddd 8 hotfixes. 4 are cc:stable, 7 are against mm/.
All are singletons - please see the respective changelogs for details.
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaSdaWwAKCRDdBJ7gKXxA
 jlRmAP92O8ez4IeVq1VVhVfGVf9Xbjd8zFTykQXuGM/3yDRoTgEA+kLDFTTaJ5Wb
 MGlgQAeFXqlfMZfBljhyzbV8Ubz1BAc=
 =4UwS
 -----END PGP SIGNATURE-----

Merge tag 'mm-hotfixes-stable-2025-11-26-11-51' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "8 hotfixes.  4 are cc:stable, 7 are against mm/.

  All are singletons - please see the respective changelogs for details"

* tag 'mm-hotfixes-stable-2025-11-26-11-51' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/filemap: fix logic around SIGBUS in filemap_map_pages()
  mm/huge_memory: fix NULL pointer deference when splitting folio
  MAINTAINERS: add test_kho to KHO's entry
  mailmap: add entry for Sam Protsenko
  selftests/mm: fix division-by-zero in uffd-unit-tests
  mm/mmap_lock: reset maple state on lock_vma_under_rcu() retry
  mm/memfd: fix information leak in hugetlb folios
  mm: swap: remove duplicate nr_swap_pages decrement in get_swap_page_of_type()
2025-11-26 12:38:05 -08:00
Linus Torvalds
ad8cccc248 Fix Intel Dollar Cove TI battery driver 32-bit build error
The driver is doing a 64-bit divide, rather than using the proper
helpers, causing link errors on i386 allyesconfig builds:

  x86_64-linux-ld: drivers/power/supply/intel_dc_ti_battery.o: in function `dc_ti_battery_get_voltage_and_current_now':
  intel_dc_ti_battery.c:(.text+0x5c): undefined reference to `__udivdi3'
  x86_64-linux-ld: intel_dc_ti_battery.c:(.text+0x96): undefined reference to `__udivdi3'

and while fixing that, fix the double rounding: keep the timing
difference in nanoseconds ('ktime'), and then just convert to usecs at
the end.

Not because the timing precision is likely to matter, but because doing
it right also makes the code simpler.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: Hans de Goede <hansg@kernel.org>
Cc: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-11-26 12:31:48 -08:00
Linus Torvalds
32115734c0 Increase the default 32-bit build frame size warning limit to 1280 bytes
That was already the limit with KASAN enabled, and the 32-bit x86 build
ends up having a couple of drm cases that have stack frames _just_ over
1kB on my allmodconfig test.  So the minimal fix for this build issue
for now is to just bump the limit and make it independent of KASAN.

[ Side note: XTENSA already used 1.5k and PARISC uses 2k, so 1280 is
  still relatively conservative ]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-11-26 12:11:28 -08:00
Linus Torvalds
430c89fe3a sound fixes for 6.18
A collection of small fixes.  All changes are device-specific and
 trivial, mostly HD-audio and USB-audio quirks and fixups.
 -----BEGIN PGP SIGNATURE-----
 
 iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAmkms3MOHHRpd2FpQHN1
 c2UuZGUACgkQLtJE4w1nLE8kaRAAjW7gLTpjR2AINyyXV6B/BWkjH8BOECFf79td
 zKLmcpfvyx8Qr6y/wc6QGO3wVJiXk/9kvWOW8QRV0HO87BQ/J+zqf4a8IxhypsAZ
 UYRAeA359QAlSzgEtj5ZRdrqjNADxsT6y022I/FmKsWt1UoEGz20ZaKDN7ptp/HU
 HznSDifx14kVxqS6dC+1DBAXofwm9pB7Ne8WtzoyTeRNx9ZETIwHQUnxiSnDhBl4
 gZdilVVEHbRb5fDsvqH9+sxAfyz2E/2L7DdaplKKk+KrxCuxWwDEQ/+TwiFXLC/8
 qIOTeGZeELuMd1n10Ztcs4mrE8IbFg74+Yi76m/RoX9WYsJWj2gLj9FovfKkmLaT
 GFwmgNAM0L1QACTk3ZxS6TR1HqNeVQxCOJ3VsE7aNnVeaSdP1Cvcs2WFkDeRs5pq
 y8hfV80ZdpDuVL+7WrNy/gBVCarQ4D2NO/7GWAdk9c9QHSOfejyzhxmoy4atgiya
 dez9TmYn5OKTHL+clbXAOi3X2Kthm2ptXQ43GHl//QJ8QUmgRgwtalmeZF5UCvVO
 Efm+3InXJLk7WzMdWoEDgzG9XDHKyXJ+UoFrtmLZaJ5QMz7/RvyV/5dzb205hQoA
 7hCwiPOtzUDll4bPkGJRBRZg0JSmlyGsUGd/lmsT/I57Wl1C8L0NFXyPjmFuKiXs
 bJIprcY=
 =qpBH
 -----END PGP SIGNATURE-----

Merge tag 'sound-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes. All changes are device-specific and
  trivial, mostly HD-audio and USB-audio quirks and fixups"

* tag 'sound-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek: Add quirk for HP ProBook 450 G8
  ALSA: usb-audio: fix uac2 clock source at terminal parser
  ALSA: hda/realtek: add quirk for HP pavilion aero laptop 13z-be200
  ALSA: hda/cirrus fix cs420x MacPro 6,1 inverted jack detection
  ALSA: usb-audio: Add DSD quirk for LEAK Stereo 230
  ALSA: au88x0: Fix incorrect error handling for PCI config reads
2025-11-26 10:33:32 -08:00
Linus Torvalds
a10d15a08f Urgent ACPI support fix for 6.18
Revert a commit that attempted to make the code in the ACPI processor
 driver more straightforward, but it turned out to cause the kernel to
 crash on at least one system, along with some further cleanups on top
 of it.
 -----BEGIN PGP SIGNATURE-----
 
 iQFGBAABCAAwFiEEcM8Aw/RY0dgsiRUR7l+9nS/U47UFAmkm9t4SHHJqd0Byand5
 c29ja2kubmV0AAoJEO5fvZ0v1OO1cB8H/iPHijCAzh3zyFmKRju3j8MFCWCqTVse
 RwLKY4NJba+4WorxVTtBcNLclz6rGf+/Qj/Xyv25zH0nGRhZtcbr/pGq9b4r0UMH
 IxqpN8BfON+UGCT5sIs9yMFl+Lt14+OAtLUI3NBQU8n4o9PznFQi2fe0sgpweP0A
 wO4Y9SVEYB3kWca0HqQ8ZWlhsAEDnxm6GvZ6ks18ShOYYE08c1X/dWkuYz2A7tCg
 BunwzVePwWBgd3JNlpdtscI5JhsA3WsNiB1vnL96toyh/SK0oRaKydmxOvfrw6Mz
 JvDn6YKUfr4zBiKRGMcwRQWnL3yi2PAq8wD8qie6rt8jaAo2bg9EUJI=
 =K5ke
 -----END PGP SIGNATURE-----

Merge tag 'acpi-6.18-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Revert a commit that attempted to make the code in the ACPI processor
  driver more straightforward, but it turned out to cause the kernel to
  crash on at least one system, along with some further cleanups on top
  of it"

* tag 'acpi-6.18-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "ACPI: processor: idle: Optimize ACPI idle driver registration"
  Revert "ACPI: processor: Remove unused empty stubs of some functions"
  Revert "ACPI: processor: idle: Rearrange declarations in header file"
  Revert "ACPI: processor: idle: Redefine two functions as void"
  Revert "ACPI: processor: Do not expose global variable acpi_idle_driver"
2025-11-26 10:17:10 -08:00
Shaurya Rane
0c922106d7 net/sched: em_canid: fix uninit-value in em_canid_match
Use pskb_may_pull() to ensure a complete CAN frame is present in the
linear data buffer before reading the CAN ID. A simple skb->len check
is insufficient because it only verifies the total data length but does
not guarantee the data is present in skb->data (it could be in
fragments).

pskb_may_pull() both validates the length and pulls fragmented data
into the linear buffer if necessary, making it safe to directly
access skb->data.

Reported-by: syzbot+5d8269a1e099279152bc@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=5d8269a1e099279152bc
Fixes: f057bbb6f9 ("net: em_canid: Ematch rule to match CAN frames according to their identifiers")
Signed-off-by: Shaurya Rane <ssrane_b23@ee.vjti.ac.in>
Link: https://patch.msgid.link/20251126085718.50808-1-ssranevjti@gmail.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2025-11-26 16:28:10 +01:00
Biju Das
6d849ff573 can: rcar_canfd: Fix CAN-FD mode as default
The commit 5cff263606 ("can: rcar_canfd: Fix controller mode setting")
has aligned with the flow mentioned in the hardware manual for all SoCs
except R-Car Gen3 and RZ/G2L SoCs. On R-Car Gen4 and RZ/G3E SoCs, due to
the wrong logic in the commit[1] sets the default mode to FD-Only mode
instead of CAN-FD mode.

This patch sets the CAN-FD mode as the default for all SoCs by dropping
the rcar_canfd_set_mode() as some SoC requires mode setting in global
reset mode, and the rest of the SoCs in channel reset mode and update the
rcar_canfd_reset_controller() to take care of these constraints. Moreover,
the RZ/G3E and R-Car Gen4 SoCs support 3 modes compared to 2 modes on the
R-Car Gen3. Use inverted logic in rcar_canfd_reset_controller() to
simplify the code later to support FD-only mode.

[1]
commit 45721c406d ("can: rcar_canfd: Add support for r8a779a0 SoC")

Fixes: 5cff263606 ("can: rcar_canfd: Fix controller mode setting")
Cc: stable@vger.kernel.org
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://patch.msgid.link/20251118123926.193445-1-biju.das.jz@bp.renesas.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2025-11-26 16:26:41 +01:00
Ilyas Gasanov
d041e5e748 ALSA: hda/realtek: Add quirk for HP ProBook 450 G8
My laptop, HP ProBook 450 G8 (32M40EA), has Realtek ALC236 codec on its
integrated sound card, and uses GPIO pins 0x2 and 0x1 for speaker mute
and mic mute LEDs correspondingly, as found out by me through hda-verb
invocations. This matches the GPIO masks used by the
alc236_fixup_hp_gpio_led() function.

PCI subsystem vendor and device IDs happen to be 0x103c and 0x8a75,
which has not been covered in the ALC2xx driver code yet.

Signed-off-by: Ilyas Gasanov <public@gsnoff.com>
Link: https://patch.msgid.link/20251125235441.53629-1-public@gsnoff.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-11-26 07:26:56 +01:00
Fernando Fernandez Mancera
0ebc27a4c6 xsk: avoid data corruption on cq descriptor number
Since commit 30f241fcf5 ("xsk: Fix immature cq descriptor
production"), the descriptor number is stored in skb control block and
xsk_cq_submit_addr_locked() relies on it to put the umem addrs onto
pool's completion queue.

skb control block shouldn't be used for this purpose as after transmit
xsk doesn't have control over it and other subsystems could use it. This
leads to the following kernel panic due to a NULL pointer dereference.

 BUG: kernel NULL pointer dereference, address: 0000000000000000
 #PF: supervisor read access in kernel mode
 #PF: error_code(0x0000) - not-present page
 PGD 0 P4D 0
 Oops: Oops: 0000 [#1] SMP NOPTI
 CPU: 2 UID: 1 PID: 927 Comm: p4xsk.bin Not tainted 6.16.12+deb14-cloud-amd64 #1 PREEMPT(lazy)  Debian 6.16.12-1
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014
 RIP: 0010:xsk_destruct_skb+0xd0/0x180
 [...]
 Call Trace:
  <IRQ>
  ? napi_complete_done+0x7a/0x1a0
  ip_rcv_core+0x1bb/0x340
  ip_rcv+0x30/0x1f0
  __netif_receive_skb_one_core+0x85/0xa0
  process_backlog+0x87/0x130
  __napi_poll+0x28/0x180
  net_rx_action+0x339/0x420
  handle_softirqs+0xdc/0x320
  ? handle_edge_irq+0x90/0x1e0
  do_softirq.part.0+0x3b/0x60
  </IRQ>
  <TASK>
  __local_bh_enable_ip+0x60/0x70
  __dev_direct_xmit+0x14e/0x1f0
  __xsk_generic_xmit+0x482/0xb70
  ? __remove_hrtimer+0x41/0xa0
  ? __xsk_generic_xmit+0x51/0xb70
  ? _raw_spin_unlock_irqrestore+0xe/0x40
  xsk_sendmsg+0xda/0x1c0
  __sys_sendto+0x1ee/0x200
  __x64_sys_sendto+0x24/0x30
  do_syscall_64+0x84/0x2f0
  ? __pfx_pollwake+0x10/0x10
  ? __rseq_handle_notify_resume+0xad/0x4c0
  ? restore_fpregs_from_fpstate+0x3c/0x90
  ? switch_fpu_return+0x5b/0xe0
  ? do_syscall_64+0x204/0x2f0
  ? do_syscall_64+0x204/0x2f0
  ? do_syscall_64+0x204/0x2f0
  entry_SYSCALL_64_after_hwframe+0x76/0x7e
  </TASK>
 [...]
 Kernel panic - not syncing: Fatal exception in interrupt
 Kernel Offset: 0x1c000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)

Instead use the skb destructor_arg pointer along with pointer tagging.
As pointers are always aligned to 8B, use the bottom bit to indicate
whether this a single address or an allocated struct containing several
addresses.

Fixes: 30f241fcf5 ("xsk: Fix immature cq descriptor production")
Closes: https://lore.kernel.org/netdev/0435b904-f44f-48f8-afb0-68868474bf1c@nop.hu/
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Link: https://patch.msgid.link/20251124171409.3845-1-fmancera@suse.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-25 19:51:50 -08:00
Heiner Kallweit
ae1737e733 r8169: fix RTL8127 hang on suspend/shutdown
There have been reports that RTL8127 hangs on suspend and shutdown,
partially disappearing from lspci until power-cycling.
According to Realtek disabling PLL's when switching to D3 should be
avoided on that chip version. Fix this by aligning disabling PLL's
with the vendor drivers, what in addition results in PLL's not being
disabled when switching to D3hot on other chip versions.

Fixes: f24f7b2f3a ("r8169: add support for RTL8127A")
Tested-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/d7faae7e-66bc-404a-a432-3a496600575f@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-25 19:12:48 -08:00
Alexey Kodanev
f5bce28f6b net: sxgbe: fix potential NULL dereference in sxgbe_rx()
Currently, when skb is null, the driver prints an error and then
dereferences skb on the next line.

To fix this, let's add a 'break' after the error message to switch
to sxgbe_rx_refill(), which is similar to the approach taken by the
other drivers in this particular case, e.g. calxeda with xgmac_rx().

Found during a code review.

Fixes: 1edb9ca69e ("net: sxgbe: add basic framework for Samsung 10Gb ethernet driver")
Signed-off-by: Alexey Kodanev <aleksei.kodanev@bell-sw.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251121123834.97748-1-aleksei.kodanev@bell-sw.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-25 19:08:53 -08:00
Nikola Z. Ivanov
0ae9cfc454 team: Move team device type change at the end of team_port_add
Attempting to add a port device that is already up will expectedly fail,
but not before modifying the team device header_ops.

In the case of the syzbot reproducer the gre0 device is
already in state UP when it attempts to add it as a
port device of team0, this fails but before that
header_ops->create of team0 is changed from eth_header to ipgre_header
in the call to team_dev_type_check_change.

Later when we end up in ipgre_header() struct ip_tunnel* points to nonsense
as the private data of the device still holds a struct team.

Example sequence of iproute2 commands to reproduce the hang/BUG():
ip link add dev team0 type team
ip link add dev gre0 type gre
ip link set dev gre0 up
ip link set dev gre0 master team0
ip link set dev team0 up
ping -I team0 1.1.1.1

Move team_dev_type_check_change down where all other checks have passed
as it changes the dev type with no way to restore it in case
one of the checks that follow it fail.

Also make sure to preserve the origial mtu assignment:
  - If port_dev is not the same type as dev, dev takes mtu from port_dev
  - If port_dev is the same type as dev, port_dev takes mtu from dev

This is done by adding a conditional before the call to dev_set_mtu
to prevent it from assigning port_dev->mtu = dev->mtu and instead
letting team_dev_type_check_change assign dev->mtu = port_dev->mtu.
The conditional is needed because the patch moves the call to
team_dev_type_check_change past dev_set_mtu.

Testing:
  - team device driver in-tree selftests
  - Add/remove various devices as slaves of team device
  - syzbot

Reported-by: syzbot+a2a3b519de727b0f7903@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=a2a3b519de727b0f7903
Fixes: 1d76efe157 ("team: add support for non-ethernet devices")
Signed-off-by: Nikola Z. Ivanov <zlatistiv@gmail.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20251122002027.695151-1-zlatistiv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-25 17:28:15 -08:00
Danielle Costantino
d2099d9f16 net/mlx5e: Fix validation logic in rate limiting
The rate limiting validation condition currently checks the output
variable max_bw_value[i] instead of the input value
maxrate->tc_maxrate[i]. This causes the validation to compare an
uninitialized or stale value rather than the actual requested rate.

The condition should check the input rate to properly validate against
the upper limit:

    } else if (maxrate->tc_maxrate[i] <= upper_limit_gbps) {

This aligns with the pattern used in the first branch, which correctly
checks maxrate->tc_maxrate[i] against upper_limit_mbps.

The current implementation can lead to unreliable validation behavior:

- For rates between 25.5 Gbps and 255 Gbps, if max_bw_value[i] is 0
  from initialization, the GBPS path may be taken regardless of whether
  the actual rate is within bounds

- When processing multiple TCs (i > 0), max_bw_value[i] contains the
  value computed for the previous TC, affecting the validation logic

- The overflow check for rates exceeding 255 Gbps may not trigger
  consistently depending on previous array values

This patch ensures the validation correctly examines the requested rate
value for proper bounds checking.

Fixes: 43b27d1bd8 ("net/mlx5e: Fix wraparound in rate limiting for values above 255 Gbps")
Signed-off-by: Danielle Costantino <dcostantino@meta.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Link: https://patch.msgid.link/20251124180043.2314428-1-dcostantino@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-25 16:38:08 -08:00
Paulo Alcantara
3184b6a5a2 smb: client: fix memory leak in cifs_construct_tcon()
When having a multiuser mount with domain= specified and using
cifscreds, cifs_set_cifscreds() will end up setting @ctx->domainname,
so it needs to be freed before leaving cifs_construct_tcon().

This fixes the following memory leak reported by kmemleak:

  mount.cifs //srv/share /mnt -o domain=ZELDA,multiuser,...
  su - testuser
  cifscreds add -d ZELDA -u testuser
  ...
  ls /mnt/1
  ...
  umount /mnt
  echo scan > /sys/kernel/debug/kmemleak
  cat /sys/kernel/debug/kmemleak
  unreferenced object 0xffff8881203c3f08 (size 8):
    comm "ls", pid 5060, jiffies 4307222943
    hex dump (first 8 bytes):
      5a 45 4c 44 41 00 cc cc                          ZELDA...
    backtrace (crc d109a8cf):
      __kmalloc_node_track_caller_noprof+0x572/0x710
      kstrdup+0x3a/0x70
      cifs_sb_tlink+0x1209/0x1770 [cifs]
      cifs_get_fattr+0xe1/0xf50 [cifs]
      cifs_get_inode_info+0xb5/0x240 [cifs]
      cifs_revalidate_dentry_attr+0x2d1/0x470 [cifs]
      cifs_getattr+0x28e/0x450 [cifs]
      vfs_getattr_nosec+0x126/0x180
      vfs_statx+0xf6/0x220
      do_statx+0xab/0x110
      __x64_sys_statx+0xd5/0x130
      do_syscall_64+0xbb/0x380
      entry_SYSCALL_64_after_hwframe+0x77/0x7f

Fixes: f2aee329a6 ("cifs: set domainName when a domain-key is used in multiuser")
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Reviewed-by: David Howells <dhowells@redhat.com>
Cc: Jay Shin <jaeshin@redhat.com>
Cc: stable@vger.kernel.org
Cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
2025-11-25 18:00:06 -06:00
Deepanshu Kartikey
b042fdf18e tracing: Fix WARN_ON in tracing_buffers_mmap_close for split VMAs
When a VMA is split (e.g., by partial munmap or MAP_FIXED), the kernel
calls vm_ops->close on each portion. For trace buffer mappings, this
results in ring_buffer_unmap() being called multiple times while
ring_buffer_map() was only called once.

This causes ring_buffer_unmap() to return -ENODEV on subsequent calls
because user_mapped is already 0, triggering a WARN_ON.

Trace buffer mappings cannot support partial mappings because the ring
buffer structure requires the complete buffer including the meta page.

Fix this by adding a may_split callback that returns -EINVAL to prevent
VMA splits entirely.

Cc: stable@vger.kernel.org
Fixes: cf9f0f7c4c ("tracing: Allow user-space mapping of the ring-buffer")
Link: https://patch.msgid.link/20251119064019.25904-1-kartikey406@gmail.com
Closes: https://syzkaller.appspot.com/bug?extid=a72c325b042aae6403c7
Tested-by: syzbot+a72c325b042aae6403c7@syzkaller.appspotmail.com
Reported-by: syzbot+a72c325b042aae6403c7@syzkaller.appspotmail.com
Signed-off-by: Deepanshu Kartikey <kartikey406@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-11-25 15:21:16 -05:00
Linus Torvalds
30f09200cc arm64 fixes for 6.18
- Avoid hardlockup when CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY=n
 
 - Fix regression in APEI/GHES error handling
 
 - Fix MMIO timers when probed via ACPI
 -----BEGIN PGP SIGNATURE-----
 
 iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmklutkQHHdpbGxAa2Vy
 bmVsLm9yZwAKCRC3rHDchMFjNPr2B/4oFfYxfwWjFVSQTsJjIDGg99gFJMomOTLg
 ddGzVE71pPwD2pkRjSLLQ09Iuq21J7tlEWmr1XLL9AxGSso5pgysj9pOsg1l8uV6
 2idsZC+fNHpWSrPTw1xqgsEZuAEQUycJ+6AbW12Xm/ydzJVnv2rWiTw0BesWVKFw
 8wGZyBz0FKS7HPMVSCKESNdGmfr1UgM0wsvs+Sn6cwDOfg/3ol+FjvwD0xtA7d4x
 MogkDtI6KBU+QpfFvSgqOk+NQZ45naOImNHIbJ6bA27FsyWab5j1/PDX3+jFADRe
 5OBSGHzTNqagVzU5SmV3+wjLMIxQq4rPqKuWUa4Pwz8CC1uC1lkw
 =+43c
 -----END PGP SIGNATURE-----

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "We've got a revert due to one of the recent CCA commits breaking ACPI
  firmware-based error reporting, a fix for a hard-lockup introduced by
  a prior fix affecting non-default (CONFIG_EXPERT) configurations and
  another ACPI fix for systems using MMIO-based timers.

  Other than that, we're looking pretty good.

   - Avoid hardlockup when CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY=n

   - Fix regression in APEI/GHES error handling

   - Fix MMIO timers when probed via ACPI"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: proton-pack: Fix hard lockup when !MITIGATE_SPECTRE_BRANCH_HISTORY
  ACPI: GTDT: Correctly number platform devices for MMIO timers
  Revert "arm64: acpi: Enable ACPI CCEL support"
2025-11-25 08:36:03 -08:00
Linus Torvalds
5f8a6c70af iommufd 6.18 second rc pull
Two compilation fixes, no functional change:
 
 - Fix a possible compiler error around counted_by() due to wrong initialization
   order
 
 - Fix a -Wflex-array-member-not-at-end
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQRRRCHOFoQz/8F5bUaFwuHvBreFYQUCaSXE0AAKCRCFwuHvBreF
 YZ2/AQDPHtcqCNY9AfuoXFmnDiPoGoL4HVgNyvtm+nLVL6L9PgD/enaWlw/elQ5A
 rED5miPTjAA+gpsHCijCZz/u19qVLQk=
 =E6AS
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd

Pull iommufd fixes from Jason Gunthorpe:
 "Two build fixes, no functional change:

   - Fix a possible compiler error around counted_by() due to wrong
     initialization order

   - Fix a -Wflex-array-member-not-at-end"

* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
  iommufd/iommufd_private.h: Avoid -Wflex-array-member-not-at-end warning
  iommufd/driver: Fix counter initialization for counted_by annotation
2025-11-25 08:31:28 -08:00
Rafael J. Wysocki
43ff36c4a5 Revert "ACPI: processor: idle: Optimize ACPI idle driver registration"
Revert commit 7a8c994cbb ("ACPI: processor: idle: Optimize ACPI idle
driver registration") because it is reported to introduce a cpuidle
regression leading to a kernel crash on a platform using the ACPI idle
driver.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reported-by: Borislav Petkov <bp@alien8.de>
Tested-by: Borislav Petkov (AMD) <bp@alien8.de>
Closes: https://lore.kernel.org/lkml/20251124200019.GIaSS5U9HhsWBotrQZ@fat_crate.local/
2025-11-25 16:08:06 +01:00
René Rebe
d26e9f669c ALSA: usb-audio: fix uac2 clock source at terminal parser
Since 8b3a087f7f ("ALSA: usb-audio: Unify virtual type units type to
UAC3 values") usb-audio is using UAC3_CLOCK_SOURCE instead of
bDescriptorSubtype, later refactored with e0ccdef926 ("ALSA: usb-audio:
Clean up check_input_term()") into parse_term_uac2_clock_source().

This breaks the clock source selection for at least my
1397:0003 BEHRINGER International GmbH FCA610 Pro.

Fix by using UAC2_CLOCK_SOURCE in parse_term_uac2_clock_source().

Fixes: 8b3a087f7f ("ALSA: usb-audio: Unify virtual type units type to UAC3 values")
Signed-off-by: René Rebe <rene@exactco.de>
Link: https://patch.msgid.link/20251125.154149.1121389544970412061.rene@exactco.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-11-25 15:53:39 +01:00
Horatiu Vultur
9780f535f8 net: lan966x: Fix the initialization of taprio
To initialize the taprio block in lan966x, it is required to configure
the register REVISIT_DLY. The purpose of this register is to set the
delay before revisit the next gate and the value of this register depends
on the system clock. The problem is that the we calculated wrong the value
of the system clock period in picoseconds. The actual system clock is
~165.617754MHZ and this correspond to a period of 6038 pico seconds and
not 15125 as currently set.

Fixes: e462b27173 ("net: lan966x: Add offload support for taprio")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251121061411.810571-1-horatiu.vultur@microchip.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-25 15:45:19 +01:00
Rafael J. Wysocki
1a8b350182 Revert "ACPI: processor: Remove unused empty stubs of some functions"
Revert commit 5020d05b34 ("ACPI: processor: Remove unused empty stubs
of some functions") because it depends on a problematic one.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-11-25 15:05:01 +01:00
Rafael J. Wysocki
e6889323c2 Revert "ACPI: processor: idle: Rearrange declarations in header file"
Revert commit bdf780fbce ("ACPI: processor: idle: Rearrange declarations
in header file") because it depends on a problematic one.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-11-25 15:03:24 +01:00
Rafael J. Wysocki
66e600a26e Revert "ACPI: processor: idle: Redefine two functions as void"
Revert commit fbd401e95e ("ACPI: processor: idle: Redefine two
functions as void") because it depends on a problematic one.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-11-25 14:53:33 +01:00
Rafael J. Wysocki
34fa09c698 Revert "ACPI: processor: Do not expose global variable acpi_idle_driver"
Revert commit 559f2eacc8 ACPI: processor: Do not expose global variable
acpi_idle_driver" because it depends on a problematic one.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-11-25 14:50:25 +01:00
Daniel Golle
081156ce13 net: phy: mxl-gpy: fix link properties on USXGMII and internal PHYs
gpy_update_interface() returns early in case the PHY is internal or
connected via USXGMII. In this case the gigabit master/slave property
as well as MDI/MDI-X status also won't be read which seems wrong.
Always read those properties by moving the logic to retrieve them to
gpy_read_status().

Fixes: fd8825cd8c ("net: phy: mxl-gpy: Add PHY Auto/MDI/MDI-X set driver for GPY211 chips")
Fixes: 311abcdddc ("net: phy: add support to get Master-Slave configuration")
Suggested-by: "Russell King (Oracle)" <linux@armlinux.org.uk>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/71fccf3f56742116eb18cc070d2a9810479ea7f9.1763650701.git.daniel@makrotopia.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-25 12:46:52 +01:00
Gui-Dong Han
82fca3d8a4 atm/fore200e: Fix possible data race in fore200e_open()
Protect access to fore200e->available_cell_rate with rate_mtx lock in the
error handling path of fore200e_open() to prevent a data race.

The field fore200e->available_cell_rate is a shared resource used to track
available bandwidth. It is concurrently accessed by fore200e_open(),
fore200e_close(), and fore200e_change_qos().

In fore200e_open(), the lock rate_mtx is correctly held when subtracting
vcc->qos.txtp.max_pcr from available_cell_rate to reserve bandwidth.
However, if the subsequent call to fore200e_activate_vcin() fails, the
function restores the reserved bandwidth by adding back to
available_cell_rate without holding the lock.

This introduces a race condition because available_cell_rate is a global
device resource shared across all VCCs. If the error path in
fore200e_open() executes concurrently with operations like
fore200e_close() or fore200e_change_qos() on other VCCs, a
read-modify-write race occurs.

Specifically, the error path reads the rate without the lock. If another
CPU acquires the lock and modifies the rate (e.g., releasing bandwidth in
fore200e_close()) between this read and the subsequent write, the error
path will overwrite the concurrent update with a stale value. This results
in incorrect bandwidth accounting.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Gui-Dong Han <hanguidong02@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251120120657.2462194-1-hanguidong02@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-25 12:39:26 +01:00
Paolo Abeni
f98e3ca2e4 Merge branch 'net-dsa-microchip-fix-resource-releases-in-error-path'
Bastien Curutchet says:

====================
net: dsa: microchip: Fix resource releases in error path

I worked on adding PTP support for the KSZ8463. While doing so, I ran
into a few bugs in the resource release process that occur when things go
wrong arount IRQ initialization.

This small series fixes those bugs.

The next series, which will add the PTP support, depend on this one.

Signed-off-by: Bastien Curutchet (Schneider Electric) <bastien.curutchet@bootlin.com>
---
Bastien Curutchet (Schneider Electric) (5):
      net: dsa: microchip: common: Fix checks on irq_find_mapping()
      net: dsa: microchip: ptp: Fix checks on irq_find_mapping()
      net: dsa: microchip: Don't free uninitialized ksz_irq
      net: dsa: microchip: Free previously initialized ports on init failures
      net: dsa: microchip: Fix symetry in ksz_ptp_msg_irq_{setup/free}()

 drivers/net/dsa/microchip/ksz_common.c | 31 +++++++++++++++----------------
 drivers/net/dsa/microchip/ksz_ptp.c    | 22 +++++++++-------------
 2 files changed, 24 insertions(+), 29 deletions(-)
---
base-commit: 09652e543e809c2369dca142fee5d9b05be9bdc7
change-id: 20251031-ksz-fix-db345df7635f

Best regards,
====================

Link: https://patch.msgid.link/20251120-ksz-fix-v6-0-891f80ae7f8f@bootlin.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-25 12:32:43 +01:00
Bastien Curutchet (Schneider Electric)
d0b8fec8ae net: dsa: microchip: Fix symetry in ksz_ptp_msg_irq_{setup/free}()
The IRQ numbers created through irq_create_mapping() are only assigned
to ptpmsg_irq[n].num at the end of the IRQ setup. So if an error occurs
between their creation and their assignment (for instance during the
request_threaded_irq() step), we enter the error path and fail to
release the newly created virtual IRQs because they aren't yet assigned
to ptpmsg_irq[n].num.

Move the mapping creation to ksz_ptp_msg_irq_setup() to ensure symetry
with what's released by ksz_ptp_msg_irq_free().
In the error path, move the irq_dispose_mapping to the out_ptp_msg label
so it will be called only on created IRQs.

Cc: stable@vger.kernel.org
Fixes: cc13ab18b2 ("net: dsa: microchip: ptp: enable interrupt for timestamping")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Bastien Curutchet (Schneider Electric) <bastien.curutchet@bootlin.com>
Link: https://patch.msgid.link/20251120-ksz-fix-v6-5-891f80ae7f8f@bootlin.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-11-25 12:32:41 +01:00