lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 13 Jan 2014 16:27:42 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Sasha Levin <sasha.levin@...cle.com>, "David S. Miller" <davem@...emloft.net> Subject: [PATCH 3.12 21/77] net: unix: allow bind to fail on mutex lock 3.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sasha Levin <sasha.levin@...cle.com> [ 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@...cle.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- net/unix/af_unix.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -718,7 +718,9 @@ static int unix_autobind(struct socket * 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 goto out; addr_len = err; - mutex_lock(&u->readlock); + err = mutex_lock_interruptible(&u->readlock); + if (err) + goto out; err = -EINVAL; if (u->addr) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists