From: Martin Wilck mwilck@suse.com
[ Upstream commit 36fa766faa0c822c860e636fe82b1affcd022974 ]
If pscsi_map_sg() fails, make sure to drop references to already allocated bios.
Link: https://lore.kernel.org/r/20210323212431.15306-2-mwilck@suse.com Reviewed-by: Christoph Hellwig hch@lst.de Reviewed-by: Lee Duncan lduncan@suse.com Signed-off-by: Martin Wilck mwilck@suse.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 c9d92b3e777d..5a047ce77bc0 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -939,6 +939,14 @@ 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; }