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From: Pan Bian <bianpan2016@163.com>
To: Faisal Latif <faisal.latif@intel.com>,
	Shiraz Saleem <shiraz.saleem@intel.com>,
	Doug Ledford <dledford@redhat.com>,
	Jason Gunthorpe <jgg@ziepe.ca>
Cc: linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
	Pan Bian <bianpan2016@163.com>
Subject: [PATCH] RDMA/i40iw: fix potential use after free
Date: Wed,  6 Nov 2019 14:44:11 +0800	[thread overview]
Message-ID: <1573022651-37171-1-git-send-email-bianpan2016@163.com> (raw)

Release variable dst after logging dst->error to avoid possible use after
free.

Signed-off-by: Pan Bian <bianpan2016@163.com>
---
 drivers/infiniband/hw/i40iw/i40iw_cm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c
index 2d6a378e8560..bb78d3280acc 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -2079,9 +2079,9 @@ static int i40iw_addr_resolve_neigh_ipv6(struct i40iw_device *iwdev,
 	dst = i40iw_get_dst_ipv6(&src_addr, &dst_addr);
 	if (!dst || dst->error) {
 		if (dst) {
-			dst_release(dst);
 			i40iw_pr_err("ip6_route_output returned dst->error = %d\n",
 				     dst->error);
+			dst_release(dst);
 		}
 		return rc;
 	}
-- 
2.7.4


             reply	other threads:[~2019-11-06  6:59 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-06  6:44 Pan Bian [this message]
2019-11-06  7:44 ` [PATCH] RDMA/i40iw: fix potential use after free Leon Romanovsky
2019-11-14 15:53 ` Jason Gunthorpe

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