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| author | Eric Dumazet <edumazet@google.com> | 2019-03-16 13:09:53 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-03 06:27:26 +0200 |
| commit | bb06073a9cad930f5c8bb5f433dcd478c26608dd (patch) | |
| tree | 0f9b76a8a7ef8cd7e48b8bcabfa1e746a36e3935 /drivers/net | |
| parent | d01bf3762e290a58d7f1941a42b13322f7803564 (diff) | |
| download | blackbird-obmc-linux-bb06073a9cad930f5c8bb5f433dcd478c26608dd.tar.gz blackbird-obmc-linux-bb06073a9cad930f5c8bb5f433dcd478c26608dd.zip | |
tun: add a missing rcu_read_unlock() in error path
commit 9180bb4f046064dfa4541488102703b402bb04e1 upstream.
In my latest patch I missed one rcu_read_unlock(), in case
device is down.
Fixes: 4477138fa0ae ("tun: properly test for IFF_UP")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/tun.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index f4126ce58878..448d5439ff6a 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1960,6 +1960,7 @@ drop: rcu_read_lock(); if (unlikely(!(tun->dev->flags & IFF_UP))) { err = -EIO; + rcu_read_unlock(); goto drop; } |
