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| author | Chen Gang <gang.chen@asianux.com> | 2013-11-12 15:11:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-13 12:09:33 +0900 |
| commit | 3fa582663129330d57d15b97ae534dc1203fc3aa (patch) | |
| tree | b648e5937c02b442fba0bd0918e5566b24d8d7f4 /kernel/taskstats.c | |
| parent | f02147ef190b3963bb61ec0e140ec47f22889f38 (diff) | |
| download | lwn-3fa582663129330d57d15b97ae534dc1203fc3aa.tar.gz lwn-3fa582663129330d57d15b97ae534dc1203fc3aa.zip | |
kernel/taskstats.c: add nla_nest_cancel() for failure processing between nla_nest_start() and nla_nest_end()
When failure occurs between nla_nest_start() and nla_nest_end(), we should
call nla_nest_cancel() to clean up related things.
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/taskstats.c')
| -rw-r--r-- | kernel/taskstats.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/taskstats.c b/kernel/taskstats.c index 145bb4d3bd4d..1db6808c494b 100644 --- a/kernel/taskstats.c +++ b/kernel/taskstats.c @@ -404,11 +404,15 @@ static struct taskstats *mk_reply(struct sk_buff *skb, int type, u32 pid) if (!na) goto err; - if (nla_put(skb, type, sizeof(pid), &pid) < 0) + if (nla_put(skb, type, sizeof(pid), &pid) < 0) { + nla_nest_cancel(skb, na); goto err; + } ret = nla_reserve(skb, TASKSTATS_TYPE_STATS, sizeof(struct taskstats)); - if (!ret) + if (!ret) { + nla_nest_cancel(skb, na); goto err; + } nla_nest_end(skb, na); return nla_data(ret); |