X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fposix-timers.c;h=e885be1e8a1150bc144fb831ce52a675e2ae8af7;hb=d83ff0c1d743320709de6522eff9e814abb041e8;hp=69185ae6b701742de8977760234c5accda366dfd;hpb=b930c26416c4ea6855726fd977145ccea9afbdda;p=pandora-kernel.git

diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 69185ae6b701..e885be1e8a11 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) {