tree 1b49f6c31bce2e2ccb77773a47fc0bd217b41862
parent 936e6b85da0476dd2edac7c51c68072da9fb4ba2
author Tomas Henzl <thenzl@redhat.com> 1592319886 +0200
committer Martin K. Petersen <martin.petersen@oracle.com> 1592972597 -0400

scsi: mptscsih: Fix read sense data size

The sense data buffer in sense_buf_pool is allocated with size of
MPT_SENSE_BUFFER_ALLOC(64) (multiplied by req_depth) while SNS_LEN(sc)(96)
is used when reading the data.  That may lead to a read from unallocated
area, sometimes from another (unallocated) page.  To fix this, limit the
read size to MPT_SENSE_BUFFER_ALLOC.

Link: https://lore.kernel.org/r/20200616150446.4840-1-thenzl@redhat.com
Co-developed-by: Stanislav Saner <ssaner@redhat.com>
Signed-off-by: Stanislav Saner <ssaner@redhat.com>
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>