| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.0 036/146] tun: add a missing rcu_read_unlock() in error path | Date | Mon, 1 Apr 2019 19:00:48 +0200 |
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5.0-stable review patch. If anyone has any objections, please let me know.
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From: Eric Dumazet <edumazet@google.com>
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>
--- drivers/net/tun.c | 1 + 1 file changed, 1 insertion(+)
--- 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; }
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