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authorCong Wang <xiyou.wangcong@gmail.com>2020-02-04 11:10:12 -0800
committerDavid S. Miller <davem@davemloft.net>2020-02-05 14:11:57 +0100
commit52b5ae501c045010aeeb1d5ac0373ff161a88291 (patch)
tree701c31838708e8147ed62ee53c15b17df0aad781 /net
parent2c22c06ce426a0d025a3dacd17cd8868f3dbe96b (diff)
downloadlinux-52b5ae501c045010aeeb1d5ac0373ff161a88291.tar.bz2
net_sched: fix a resource leak in tcindex_set_parms()
Jakub noticed there is a potential resource leak in tcindex_set_parms(): when tcindex_filter_result_init() fails and it jumps to 'errout1' which doesn't release the memory and resources allocated by tcindex_alloc_perfect_hash(). We should just jump to 'errout_alloc' which calls tcindex_free_perfect_hash(). Fixes: b9a24bb76bf6 ("net_sched: properly handle failure case of tcf_exts_init()") Reported-by: Jakub Kicinski <kuba@kernel.org> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/sched/cls_tcindex.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c
index 0323aee03de7..09b7dc5fe7e0 100644
--- a/net/sched/cls_tcindex.c
+++ b/net/sched/cls_tcindex.c
@@ -365,7 +365,7 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
err = tcindex_filter_result_init(&new_filter_result, net);
if (err < 0)
- goto errout1;
+ goto errout_alloc;
if (old_r)
cr = r->res;
@@ -484,7 +484,6 @@ errout_alloc:
tcindex_free_perfect_hash(cp);
else if (balloc == 2)
kfree(cp->h);
-errout1:
tcf_exts_destroy(&new_filter_result.exts);
errout:
kfree(cp);