diff mbox

[2/3] mtip32xx: assign driver tag

Message ID 20170419003142.9581-3-ming.lei@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ming Lei April 19, 2017, 12:31 a.m. UTC 
Assign driver tag for internal command, so that we
can avoid kernel oops[1] trigered in blk_mq_tag_to_rq().

[1] https://bugzilla.kernel.org/show_bug.cgi?id=195429

Reported-by: Jozef Mikovic <jmikovic@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 drivers/block/mtip32xx/mtip32xx.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox

Patch

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index f96ab717534c..8cfe5a6edb05 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -180,6 +180,8 @@  static struct mtip_cmd *mtip_get_int_command(struct driver_data *dd)
 	if (IS_ERR(rq))
 		return NULL;
 
+	WARN_ON(!blk_mq_get_driver_tag(rq, NULL, true));
+
 	return blk_mq_rq_to_pdu(rq);
 }