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chtls: Fix potential resource leak

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[ Upstream commit b6011966ac6f402847eb5326beee8da3a80405c7 ]

The dst entry should be released if no neighbour is found. Goto label
free_dst to fix the issue. Besides, the check of ndev against NULL is
redundant.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Link: https://lore.kernel.org/r/20210121145738.51091-1-bianpan2016@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Pan Bian 2021-01-21 06:57:38 -08:00 • committed by Greg Kroah-Hartman
commit a5c70e57c4
1 changed files with 3 additions and 4 deletions
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7
drivers/crypto/chelsio/chtls/chtls_cm.c
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@ -1047,11 +1047,9 @@ static struct sock *chtls_recv_sock(struct sock *lsk,
n = dst_neigh_lookup(dst, &iph->saddr);
if (!n || !n->dev)
goto free_sk;
goto free_dst;
ndev = n->dev;
if (!ndev)
goto free_dst;
if (is_vlan_dev(ndev))
ndev = vlan_dev_real_dev(ndev);
@ -1117,7 +1115,8 @@ static struct sock *chtls_recv_sock(struct sock *lsk,
free_csk:
chtls_sock_release(&csk->kref);
free_dst:
neigh_release(n);
if (n)
neigh_release(n);
dst_release(dst);
free_sk:
inet_csk_prepare_forced_close(newsk);