Ingo Molnar wrote: > Subject: [patch] futex: PI state locking fix > From: Ingo Molnar <[EMAIL PROTECTED]> > > testing of -rt by IBM uncovered a locking bug in wake_futex_pi(): the PI > state needs to be locked before we access it. > > this patch has been tested in -rt. Must-have for v2.6.21. >
Does that fix this: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=224262 [<c043f3d7>] rt_mutex_next_owner+0x2f/0x40 kernel/rt_mutex_common.c:rt_mutex_top_waiter():74: BUG_ON(w->lock != lock); [<c043ecfc>] do_futex+0x94d/0xbe3 inlined: futex_unlock_pi() inlined: wake_futex_pi() kernel/futex.c:wake_futex_pi():569: new_owner = rt_mutex_next_owner(&pi_state->pi_mutex); [<c043f0af>] sys_futex+0x11d/0x130 [<c040404b>] syscall_call+0x7/0xb - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
