4.9-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 7ff44499bafbd376115f0bb6b578d980f56ee13b ]
- fix race condition when a unit is deleted after an RLL, and before we have gotten the LV_STATUS page of the unit. - In this case we will get a standard inquiry, rather than the desired page. This will result in a unit presented which no longer exists. - If we ask for LV_STATUS, insure we get LV_STATUS
Reviewed-by: Murthy Bhat murthy.bhat@microsemi.com Reviewed-by: Mahesh Rajashekhara mahesh.rajashekhara@microsemi.com Reviewed-by: Scott Teel scott.teel@microsemi.com Reviewed-by: Kevin Barnett kevin.barnett@microsemi.com Signed-off-by: Dave Carroll david.carroll@microsemi.com Signed-off-by: Don Brace don.brace@microsemi.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/smartpqi/smartpqi_init.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 9a208961cc0b..06a062455404 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -983,6 +983,9 @@ static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info, if (rc) goto out;
+ if (vpd->page_code != CISS_VPD_LV_STATUS) + goto out; + page_length = offsetof(struct ciss_vpd_logical_volume_status, volume_status) + vpd->page_length; if (page_length < sizeof(*vpd))