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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-26 19:43:20 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-26 19:43:20 -0800
commit24e55910e4801d772f95becde20b526b8b10388d (patch)
treefe02c8e39d21e940562624e95fbe6641a590e734 /kernel
parentdcad0fceae528e8007610308bad7e5a3370e5c39 (diff)
parent00f4e13c4634b10f6a16b26a980b22a53dfa6bb5 (diff)
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar. * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource : Nomadik-mtu : fix missing irq initialization posix-timer: Don't call idr_find() with out-of-range ID
Diffstat (limited to 'kernel')
-rw-r--r--kernel/posix-timers.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 10349d5f2ec3..7edfe4b901e7 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -639,6 +639,13 @@ static struct k_itimer *__lock_timer(timer_t timer_id, unsigned long *flags)
{
struct k_itimer *timr;
+ /*
+ * timer_t could be any type >= int and we want to make sure any
+ * @timer_id outside positive int range fails lookup.
+ */
+ if ((unsigned long long)timer_id > INT_MAX)
+ return NULL;
+
rcu_read_lock();
timr = idr_find(&posix_timers_id, (int)timer_id);
if (timr) {