net: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback

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[ Upstream commit f93fc5d12d ]

octep_vf_request_irqs() requests MSI-X queue IRQs with dev_id set to
ioq_vector. If request_irq() fails part-way, the rollback loop calls
free_irq() with dev_id set to 'oct', which does not match the original
dev_id and may leave the irqaction registered.

This can keep IRQ handlers alive while ioq_vector is later freed during
unwind/teardown, leading to a use-after-free or crash when an interrupt
fires.

Fix the error path to free IRQs with the same ioq_vector dev_id used
during request_irq().

Fixes: 1cd3b40797 ("octeon_ep_vf: add Tx/Rx processing and interrupt support")
Signed-off-by: Kery Qi <qikeyu2017@gmail.com>
Link: https://patch.msgid.link/20260108164256.1749-2-qikeyu2017@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Kery Qi 2026-01-09 00:42:57 +08:00 • committed by Greg Kroah-Hartman

parent bb4fa4c0b5

commit aa05a8371a

1 changed files with 1 additions and 1 deletions

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drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c

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