diff options
| author | Darren Hart <dvhart@linux.intel.com> | 2012-07-20 20:53:30 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-07-24 16:02:57 +0200 |
| commit | f27071cb7fe3e1d37a9dbe6c0dfc5395cd40fa43 (patch) | |
| tree | 8a44c9205cc78556da5847a8310c1749ec248608 | |
| parent | futex: Test for pi_mutex on fault in futex_wait_requeue_pi() (diff) | |
| download | linux-f27071cb7fe3e1d37a9dbe6c0dfc5395cd40fa43.tar.xz linux-f27071cb7fe3e1d37a9dbe6c0dfc5395cd40fa43.zip | |
futex: Fix bug in WARN_ON for NULL q.pi_state
The WARN_ON in futex_wait_requeue_pi() for a NULL q.pi_state was testing
the address (&q.pi_state) of the pointer instead of the value
(q.pi_state) of the pointer. Correct it accordingly.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Cc: Dave Jones <davej@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1c85d97f6e5f79ec389a4ead3e367363c74bd09a.1342809673.git.dvhart@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | kernel/futex.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/futex.c b/kernel/futex.c index 05018bfe21a7..5551adaf7cdf 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -2343,7 +2343,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags, * signal. futex_unlock_pi() will not destroy the lock_ptr nor * the pi_state. */ - WARN_ON(!&q.pi_state); + WARN_ON(!q.pi_state); pi_mutex = &q.pi_state->pi_mutex; ret = rt_mutex_finish_proxy_lock(pi_mutex, to, &rt_waiter, 1); debug_rt_mutex_free_waiter(&rt_waiter); |