git.openpandora.org
/
pandora-kernel.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
| inline |
side by side
[WAN]: Cosmetic changes to N2 and C101 drivers
[pandora-kernel.git]
/
kernel
/
futex.c
diff --git
a/kernel/futex.c
b/kernel/futex.c
index
1dc98e4
..
cf0c8e2
100644
(file)
--- a/
kernel/futex.c
+++ b/
kernel/futex.c
@@
-476,6
+476,12
@@
lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, struct futex_q *me)
* the refcount and return its pi_state:
*/
pi_state = this->pi_state;
+ /*
+ * Userspace might have messed up non PI and PI futexes
+ */
+ if (unlikely(!pi_state))
+ return -EINVAL;
+
atomic_inc(&pi_state->refcount);
me->pi_state = pi_state;