diff options
Diffstat (limited to 'drivers/xen/events.c')
| -rw-r--r-- | drivers/xen/events.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index a3bcd6175f4a..e5e5812a1014 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -1104,6 +1104,9 @@ int evtchn_get(unsigned int evtchn) struct irq_info *info; int err = -ENOENT; + if (evtchn >= NR_EVENT_CHANNELS) + return -EINVAL; + mutex_lock(&irq_mapping_update_lock); irq = evtchn_to_irq[evtchn]; |