scsi: megaraid_sas: Fix for a potential deadlock

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[ Upstream commit 50740f4dc7 ]

This fixes a 'possible circular locking dependency detected' warning
      CPU0                    CPU1
      ----                    ----
 lock(&instance->reset_mutex);
                              lock(&shost->scan_mutex);
                              lock(&instance->reset_mutex);
 lock(&shost->scan_mutex);

Fix this by temporarily releasing the reset_mutex.

Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Link: https://lore.kernel.org/r/20240923174833.45345-1-thenzl@redhat.com
Acked-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Tomas Henzl 2024-09-23 19:48:33 +02:00 • committed by Greg Kroah-Hartman

parent ce697618e3

commit 3c654998a3

1 changed files with 4 additions and 1 deletions

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drivers/scsi/megaraid/megaraid_sas_base.c

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