scsi: qla2xxx: Fix crash in qla2xxx_eh_abort on bad ptr

BugLink: http://bugs.launchpad.net/bugs/1691369
commit 5f7c2beef819d9ea2d1b814edf6f5981420e9cf8 upstream.

After a Qlogic card breaks when initializing (test case), the system can
crash in qla2xxx_eh_abort if processing anything but a scsi command type
srb.

Fixes: 1535aa75a3d8 ("scsi: qla2xxx: fix invalid DMA access after command aborts in PCI device remove")
Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com>
Acked-By: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index f72fe724074dfdfd5006317e435afb27da047ade..61811aec1a447adacd90f9f62eac49eec12803c8 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1621,7 +1621,8 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
                                /* Don't abort commands in adapter during EEH
                                 * recovery as it's not accessible/responding.
                                 */
-                               if (GET_CMD_SP(sp) && !ha->flags.eeh_busy) {
+                               if (GET_CMD_SP(sp) && !ha->flags.eeh_busy &&
+                                   (sp->type == SRB_SCSI_CMD)) {
                                        /* Get a reference to the sp and drop the lock.
                                         * The reference ensures this sp->done() call
                                         * - and not the call in qla2xxx_eh_abort() -