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scsi: bnx2fc: Fix check in SCSI completion handler for timed out request

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[ Upstream commit ecf7ff4994 ]

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 <chad.dupuis@cavium.com>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chad Dupuis 2018-01-24 08:07:06 -08:00 committed by Greg Kroah-Hartman
parent af99306224
commit a1ac3da843
1 changed files with 1 additions and 0 deletions
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1
drivers/scsi/bnx2fc/bnx2fc_io.c
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@ -1865,6 +1865,7 @@ 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 */