Avoid that issuing a LIP as follows:
find /sys -name 'issue_lip'|while read f; do echo 1 > $f; done
triggers the following:
BUG: unable to handle kernel NULL pointer dereference at (null)
Call Trace:
qla2x00_abort_all_cmds+0xed/0x140 [qla2xxx]
qla2x00_abort_isp_cleanup+0x1e3/0x280 [qla2xxx]
qla2x00_abort_isp+0xef/0x690 [qla2xxx]
qla2x00_do_dpc+0x36c/0x880 [qla2xxx]
kthread+0x10c/0x140
Fixes: 1535aa75a3d8 ("qla2xxx: fix invalid DMA access after command aborts in PCI device remove")
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Cc: Naresh Bannoth <nbannoth@xxxxxxxxxx>
Cc: Mauricio Faria de Oliveira <mauricfo@xxxxxxxxxxxxxxxxxx>
Cc: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_os.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 0a000ecf0881..ae9c5a7b239a 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1600,6 +1600,7 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
srb_t *sp;
struct qla_hw_data *ha = vha->hw;
struct req_que *req;
+ struct scsi_cmnd *scmd;
qlt_host_reset_handler(ha);
@@ -1613,6 +1614,8 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++) {
sp = req->outstanding_cmds[cnt];
if (sp) {
+ scmd = GET_CMD_SP(sp);
+
/* Don't abort commands in adapter during EEH
* recovery as it's not accessible/responding.
*/
@@ -1624,7 +1627,8 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
*/
sp_get(sp);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
- qla2xxx_eh_abort(GET_CMD_SP(sp));
+ if (scmd)
+ qla2xxx_eh_abort(scmd);
spin_lock_irqsave(&ha->hardware_lock, flags);
}
req->outstanding_cmds[cnt] = NULL;
--
2.11.0
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html