lkml.org 
[lkml]   [2020]   [Feb]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.14 113/173] net_sched: fix a resource leak in tcindex_set_parms()
Date
From: Cong Wang <xiyou.wangcong@gmail.com>

[ Upstream commit 52b5ae501c045010aeeb1d5ac0373ff161a88291 ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/sched/cls_tcindex.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/net/sched/cls_tcindex.c
+++ b/net/sched/cls_tcindex.c
@@ -383,7 +383,7 @@ tcindex_set_parms(struct net *net, struc

err = tcindex_filter_result_init(&new_filter_result);
if (err < 0)
- goto errout1;
+ goto errout_alloc;
if (old_r)
cr = r->res;

@@ -502,7 +502,6 @@ 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);

\
 
 \ /
  Last update: 2020-02-13 16:28    [W:0.346 / U:20.624 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site