commit 06a9ec291b3aec9c7e36af0a10ad2b556bd7e84f
author Thomas Gleixner <tglx@linutronix.de> Mon Jul 10 04:44:30 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Mon Jul 10 13:24:18 2006 -0700
tree a98c1293470967bfa93e250b99b6a0ff129e3dee
parent bed936f7eab946c60170bc92a1aea597da158e02

[PATCH] pi-futex: Validate futex type instead of oopsing

Calling futex_lock_pi is called with a reference to a non PI futex and
waiters exist already, lookup_pi_state() oopses due to pi_state == NULL.
Check this condition and return -EINVAL to userspace.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>