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| author | Eric Dumazet <edumazet@google.com> | 2019-03-16 23:09:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-03 07:26:19 +0300 |
| commit | e044d21c2999d35c26cc15011e6478e2a9eaee63 (patch) | |
| tree | d12c044bd83dcf976f0b8c1e80ae66d7bfff9253 /drivers/net/tun.c | |
| parent | 6bdb5fdc4787fb621676c5d7380b9351b79cd9f8 (diff) | |
| download | linux-e044d21c2999d35c26cc15011e6478e2a9eaee63.tar.xz | |
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/tun.c')
| -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 76dd8580e287..044d5c3a4d04 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1915,6 +1915,7 @@ drop: rcu_read_lock(); if (unlikely(!(tun->dev->flags & IFF_UP))) { err = -EIO; + rcu_read_unlock(); goto drop; } |