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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2006-10-29 16:45:58 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-29 12:07:37 -0800 |
| commit | d46a3d0d07ba539aea5b0e1ad30e568f0cb03576 (patch) | |
| tree | 2db10dd06537a27bbdd16080c56db33f884812bb | |
| parent | 5211e6e6c671f0d4b1e1a1023384d20227d8ee65 (diff) | |
| download | lwn-d46a3d0d07ba539aea5b0e1ad30e568f0cb03576.tar.gz lwn-d46a3d0d07ba539aea5b0e1ad30e568f0cb03576.zip | |
[PATCH] taskstats: fix sk_buff leak
'return genlmsg_cancel()' in taskstats_user_cmd/taskstats_exit_send
potentially leaks a skb. Unless we pass 'rep_skb' to the netlink layer
we own sk_buff. This means we should always do kfree_skb() on failure.
[ Thomas acked and pointed out missing return value in original version ]
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Thomas Graf <tgraf@suug.ch>
Cc: Andrew Morton <akpm@osdl.org>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Jay Lan <jlan@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | kernel/taskstats.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/taskstats.c b/kernel/taskstats.c index 8adfb8069c6d..f3c3e9d43d2c 100644 --- a/kernel/taskstats.c +++ b/kernel/taskstats.c @@ -411,7 +411,7 @@ static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info) return send_reply(rep_skb, info->snd_pid); nla_put_failure: - return genlmsg_cancel(rep_skb, reply); + rc = genlmsg_cancel(rep_skb, reply); err: nlmsg_free(rep_skb); return rc; @@ -507,7 +507,6 @@ send: nla_put_failure: genlmsg_cancel(rep_skb, reply); - goto ret; err_skb: nlmsg_free(rep_skb); ret: |