From 5c9e3c1c5276cf1f0de47f97eddf48ae1e7fd083 Mon Sep 17 00:00:00 2001 From: Murthy Bhat Date: Fri, 28 Apr 2023 10:37:06 -0500 Subject: scsi: smartpqi: Validate block layer host tag Prevent OS crashes when a drive is hot removed during I/O stress test. The I/O request pointer can be invalid if block layer provides incorrect multi-queue host tag. This can lead to invalid I/O request pointer dereference. Reviewed-by: Scott Benesh Reviewed-by: Scott Teel Reviewed-by: Mike McGowen Reviewed-by: Kevin Barnett Signed-off-by: Murthy Bhat Signed-off-by: Don Brace Link: https://lore.kernel.org/r/20230428153712.297638-7-don.brace@microchip.com Signed-off-by: Martin K. Petersen --- drivers/scsi/smartpqi/smartpqi_init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/smartpqi') diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 7fe80bef1a15..f76b5a3e0fd1 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -708,7 +708,8 @@ static inline struct pqi_io_request *pqi_alloc_io_request(struct pqi_ctrl_info * } } - pqi_reinit_io_request(io_request); + if (io_request) + pqi_reinit_io_request(io_request); return io_request; } -- cgit