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| author |   Sasha Levin <sasha.levin@oracle.com> | 2013-12-07 17:26:27 -0500 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-12-10 21:45:15 -0500 |
| commit | 12663bfc97c8b3fdb292428105dd92d563164050 (patch) | |
| tree | 3cfc0b33e9c96636e397c9c19806208735556b14 /net/core/sock.c | |
| parent | Merge branch 'sfc-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc (diff) | |
| download | linux-dev-12663bfc97c8b3fdb292428105dd92d563164050.tar.xz linux-dev-12663bfc97c8b3fdb292428105dd92d563164050.zip | |
net: unix: allow set_peek_off to fail
unix_dgram_recvmsg() will hold the readlock of the socket until recv
is complete.
In the same time, we may try to setsockopt(SO_PEEK_OFF) which will hang until
unix_dgram_recvmsg() will complete (which can take a while) without allowing
us to break out of it, triggering a hung task spew.
Instead, allow set_peek_off to fail, this way userspace will not hang.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/sock.c')
| -rw-r--r-- | net/core/sock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index ab20ed9b0f31..5393b4b719d7 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -882,7 +882,7 @@ set_rcvbuf: case SO_PEEK_OFF: if (sock->ops->set_peek_off) - sock->ops->set_peek_off(sk, val); + ret = sock->ops->set_peek_off(sk, val); else ret = -EOPNOTSUPP; break; |