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| author | Sasha Levin <sasha.levin@oracle.com> | 2013-12-13 10:54:22 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-17 15:04:42 -0500 |
| commit | 37ab4fa7844a044dc21fde45e2a0fc2f3c3b6490 (patch) | |
| tree | dda88894bed9dcf9f6bc429c30f1816497b2b1cb | |
| parent | d1fc50247693bf9116184c19ca16386ff14f5aed (diff) | |
| download | linux-stable-37ab4fa7844a044dc21fde45e2a0fc2f3c3b6490.tar.gz linux-stable-37ab4fa7844a044dc21fde45e2a0fc2f3c3b6490.tar.bz2 linux-stable-37ab4fa7844a044dc21fde45e2a0fc2f3c3b6490.zip | |
net: unix: allow bind to fail on mutex lock
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>
| -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 a0ca162e5bd5..a427623ee574 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -718,7 +718,9 @@ 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) @@ -877,7 +879,9 @@ 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) |