From ac6572952cbbac58381636a7e28cb57fffe90adb Mon Sep 17 00:00:00 2001 From: Chad Dupuis Date: Wed, 24 Jan 2018 08:07:06 -0800 Subject: [PATCH] scsi: bnx2fc: Fix check in SCSI completion handler for timed out request [ Upstream commit ecf7ff49945f5741fa1da112f994939f942031d3 ] When a request times out we set the io_req flag BNX2FC_FLAG_IO_COMPL so that if a subsequent completion comes in on that task ID we will ignore it. The issue is that in the check for this flag there is a missing return so we will continue to process a request which may have already been returned to the ownership of the SCSI layer. This can cause unpredictable results. Solution is to add in the missing return. [mkp: typo plus title shortening] Signed-off-by: Chad Dupuis Reviewed-by: Laurence Oberman Tested-by: Laurence Oberman Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/bnx2fc/bnx2fc_io.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index f501095f91ac..bd39590d81c4 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c @@ -1869,6 +1869,7 @@ void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req, /* we will not receive ABTS response for this IO */ BNX2FC_IO_DBG(io_req, "Timer context finished processing " "this scsi cmd\n"); + return; } /* Cancel the timeout_work, as we received IO completion */ -- 2.20.1