diff options
| author | Sasha Levin <sasha.levin@oracle.com> | 2013-12-13 15:54:22 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-15 23:31:35 (GMT) |
| commit | 3620cedf7a554744184afe5022fc9096f0977f31 (patch) | |
| tree | d33d96352a2372041d6f902c421428f24c3db7e6 /net/unix | |
| parent | 3e6d67b46951976b726c1fe8d54b495ffae7e23d (diff) | |
| download | linux-fsl-qoriq-3620cedf7a554744184afe5022fc9096f0977f31.tar.xz | |
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/unix')
| -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 a0ca162..a427623 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) |