[PATCH 4.19 032/245] RDMA/qedr: Fix potential use after free
From: Greg Kroah-Hartman
Date: Tue Sep 29 2020 - 07:30:40 EST
From: Pan Bian <bianpan2016@xxxxxxx>
[ Upstream commit 960657b732e1ce21b07be5ab48a7ad3913d72ba4 ]
Move the release operation after error log to avoid possible use after
free.
Link: https://lore.kernel.org/r/1573021434-18768-1-git-send-email-bianpan2016@xxxxxxx
Signed-off-by: Pan Bian <bianpan2016@xxxxxxx>
Acked-by: Michal Kalderon <michal.kalderon@xxxxxxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/infiniband/hw/qedr/qedr_iw_cm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/qedr/qedr_iw_cm.c b/drivers/infiniband/hw/qedr/qedr_iw_cm.c
index 2566715773675..e908dfbaa1378 100644
--- a/drivers/infiniband/hw/qedr/qedr_iw_cm.c
+++ b/drivers/infiniband/hw/qedr/qedr_iw_cm.c
@@ -460,10 +460,10 @@ qedr_addr6_resolve(struct qedr_dev *dev,
if ((!dst) || dst->error) {
if (dst) {
- dst_release(dst);
DP_ERR(dev,
"ip6_route_output returned dst->error = %d\n",
dst->error);
+ dst_release(dst);
}
return -EINVAL;
}
--
2.25.1