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Michal Schmidt b905b2acb3 i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path 
[ Upstream commit 915470e1b4 ]

If request_irq() in i40e_vsi_request_irq_msix() fails in an iteration
later than the first, the error path wants to free the IRQs requested
so far. However, it uses the wrong dev_id argument for free_irq(), so
it does not free the IRQs correctly and instead triggers the warning:

 Trying to free already-free IRQ 173
 WARNING: CPU: 25 PID: 1091 at kernel/irq/manage.c:1829 __free_irq+0x192/0x2c0
 Modules linked in: i40e(+) [...]
 CPU: 25 UID: 0 PID: 1091 Comm: NetworkManager Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy)
 Hardware name: [...]
 RIP: 0010:__free_irq+0x192/0x2c0
 [...]
 Call Trace:
  <TASK>
  free_irq+0x32/0x70
  i40e_vsi_request_irq_msix.cold+0x63/0x8b [i40e]
  i40e_vsi_request_irq+0x79/0x80 [i40e]
  i40e_vsi_open+0x21f/0x2f0 [i40e]
  i40e_open+0x63/0x130 [i40e]
  __dev_open+0xfc/0x210
  __dev_change_flags+0x1fc/0x240
  netif_change_flags+0x27/0x70
  do_setlink.isra.0+0x341/0xc70
  rtnl_newlink+0x468/0x860
  rtnetlink_rcv_msg+0x375/0x450
  netlink_rcv_skb+0x5c/0x110
  netlink_unicast+0x288/0x3c0
  netlink_sendmsg+0x20d/0x430
  ____sys_sendmsg+0x3a2/0x3d0
  ___sys_sendmsg+0x99/0xe0
  __sys_sendmsg+0x8a/0xf0
  do_syscall_64+0x82/0x2c0
  entry_SYSCALL_64_after_hwframe+0x76/0x7e
  [...]
  </TASK>
 ---[ end trace 0000000000000000 ]---

Use the same dev_id for free_irq() as for request_irq().

I tested this with inserting code to fail intentionally.

Fixes: 493fb30011 ("i40e: Move q_vectors from pointer to array to array of pointers")
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Subbaraya Sundeep <sbhatta@marvell.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2025-09-19 16:29:58 +02:00
Documentation docs: networking: can: change bcm_msg_head frames member to support flexible array 2025-09-19 16:29:58 +02:00
LICENSES
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arch KVM: SVM: Set synthesized TSA CPUID flags 2025-09-19 16:29:56 +02:00
block block: reject invalid operation in submit_bio_noacct 2025-08-28 16:26:10 +02:00
certs
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crypto crypto: xts - Only add ecb if it is not already there 2025-06-27 11:07:06 +01:00
drivers i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path 2025-09-19 16:29:58 +02:00
fs kernfs: Fix UAF in polling when open file is released 2025-09-19 16:29:57 +02:00
include compiler-clang.h: define __SANITIZE_*__ macros only when undefined 2025-09-19 16:29:56 +02:00
init
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io_uring io_uring/poll: fix POLLERR handling 2025-07-24 08:51:48 +02:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:07:30 +01:00
kernel tracing: Silence warning when chunk allocation fails in trace_pid_write 2025-09-19 16:29:56 +02:00
lib maple_tree: fix mt_destroy_walk() on root leaf node 2025-07-17 18:32:09 +02:00
mm mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory 2025-09-19 16:29:57 +02:00
net tunnels: reset the GSO metadata before reusing the skb 2025-09-19 16:29:58 +02:00
rust rust: module: place cleanup_module() in .exit.text section 2025-07-06 10:57:54 +02:00
samples ftrace/samples: Fix function size computation 2025-09-19 16:29:56 +02:00
scripts kconfig: lxdialog: fix 'space' to (de)select options 2025-08-28 16:26:02 +02:00
security apparmor: use the condition in AA_BUG_FMT even with debug disabled 2025-08-28 16:26:01 +02:00
sound ASoC: q6apm-dai: schedule all available frames to avoid dsp under-runs 2025-09-19 16:29:55 +02:00
tools tools: gpio: remove the include directory on make clean 2025-09-09 18:54:24 +02:00
usr kbuild: hdrcheck: fix cross build with clang 2025-06-27 11:07:25 +01:00
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Makefile Linux 6.1.152 2025-09-11 17:19:16 +02:00
README
…

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.