diff options
| author | Sasha Levin <sasha.levin@oracle.com> | 2013-12-13 10:54:22 -0500 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-02-15 19:20:09 +0000 |
| commit | 2e737a8ace4d0ad5f15aec3fd4367282d0273321 (patch) | |
| tree | f1bf52f6dfeb4d81aa5f1200a6c2c440020c83d0 /net | |
| parent | 6e890b0aa10bfdd826139cae3cefc856db151028 (diff) | |
net: unix: allow bind to fail on mutex lock
[ Upstream commit 37ab4fa7844a044dc21fde45e2a0fc2f3c3b6490 ]
This is similar to the set_peek_off patch where calling bind while the
socket is stuck in unix_dgram_recvmsg() will block and cause a hung task
spew after a while.
This is also the last place that did a straightforward mutex_lock(), so
there shouldn't be any more of these patches.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'net')
| -rw-r--r-- | net/unix/af_unix.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 9338ccc1a00b..eddfdecc122b 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -696,7 +696,9 @@ static int unix_autobind(struct socket *sock) int err; unsigned int retries = 0; - mutex_lock(&u->readlock); + err = mutex_lock_interruptible(&u->readlock); + if (err) + return err; err = 0; if (u->addr) @@ -829,7 +831,9 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) goto out; addr_len = err; - mutex_lock(&u->readlock); + err = mutex_lock_interruptible(&u->readlock); + if (err) + goto out; err = -EINVAL; if (u->addr) |