scsi: lpfc: Avoid potential ndlp use-after-free in dev_loss_tmo_callbk

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[ Upstream commit b5162bb6aa ]

Smatch detected a potential use-after-free of an ndlp oject in
dev_loss_tmo_callbk during driver unload or fatal error handling.

Fix by reordering code to avoid potential use-after-free if initial
nodelist reference has been previously removed.

Fixes: 4281f44ea8 ("scsi: lpfc: Prevent NDLP reference count underflow in dev_loss_tmo callback")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/linux-scsi/41c1d855-9eb5-416f-ac12-8b61929201a3@stanley.mountain/
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20250425194806.3585-6-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Justin Tee 2025-04-25 12:48:03 -07:00 • committed by Greg Kroah-Hartman

parent 6857cbf0e4

commit ea405fb414

1 changed files with 17 additions and 15 deletions

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drivers/scsi/lpfc/lpfc_hbadisc.c

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