scsi: lpfc: Validate hdwq pointers before dereferencing in reset/errata paths

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When the HBA is undergoing a reset or is handling an errata event, NULL ptr
dereference crashes may occur in routines such as
lpfc_sli_flush_io_rings(), lpfc_dev_loss_tmo_callbk(), or
lpfc_abort_handler().

Add NULL ptr checks before dereferencing hdwq pointers that may have been
freed due to operations colliding with a reset or errata event handler.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20240726231512.92867-4-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Justin Tee 2024-07-26 16:15:07 -07:00 • committed by Martin K. Petersen

parent f1bfe32073

commit 2be1d4f119

3 changed files with 24 additions and 3 deletions

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3

drivers/scsi/lpfc/lpfc_hbadisc.c

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13

drivers/scsi/lpfc/lpfc_scsi.c

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11

drivers/scsi/lpfc/lpfc_sli.c

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