[PATCH v2 2/2] target: pscsi: cleanup after failure in pscsi_map_sg()

[mwilck@xxxxxxxx]

From: Martin Wilck <mwilck@xxxxxxxx>

If pscsi_map_sg() fails, make sure to drop references to already
allocated bios.

Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
---
 drivers/target/target_core_pscsi.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 977362d..1c9aeab 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -937,6 +937,14 @@ pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
 
 	return 0;
 fail:
+	if (bio)
+		bio_put(bio);
+	while (req->bio) {
+		bio = req->bio;
+		req->bio = bio->bi_next;
+		bio_put(bio);
+	}
+	req->biotail = NULL;
 	return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 }
 
-- 
2.26.2