diff options
| -rw-r--r-- | kernel/events/ring_buffer.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index 4013408ce012..485cf0a66631 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -688,7 +688,9 @@ int rb_alloc_aux(struct perf_buffer *rb, struct perf_event *event, * max_order, to aid PMU drivers in double buffering. */ if (!watermark) - watermark = nr_pages << (PAGE_SHIFT - 1); + watermark = min_t(unsigned long, + U32_MAX, + (unsigned long)nr_pages << (PAGE_SHIFT - 1)); /* * Use aux_watermark as the basis for chunking to |