scsi: mpi3mr: Bad drive in topology results kernel crash

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[ Upstream commit 8e45183978 ]

When the SAS Transport Layer support is enabled and a device exposed to
the OS by the driver fails INQUIRY commands, the driver frees up the memory
allocated for an internal HBA port data structure. However, in some places,
the reference to the freed memory is not cleared. When the firmware sends
the Device Info change event for the same device again, the freed memory is
accessed and that leads to memory corruption and OS crash.

Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Link: https://lore.kernel.org/r/20230228140835.4075-7-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Ranjan Kumar 2023-02-28 06:08:35 -08:00 • committed by Greg Kroah-Hartman

parent a0b33e1d8d

commit 1f822ae8fb

1 changed files with 7 additions and 5 deletions

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drivers/scsi/mpi3mr/mpi3mr_transport.c

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