diff options
Diffstat (limited to 'kernel/bpf/ringbuf.c')
| -rw-r--r-- | kernel/bpf/ringbuf.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/bpf/ringbuf.c b/kernel/bpf/ringbuf.c index f25b719ac786..b86d80c9cd59 100644 --- a/kernel/bpf/ringbuf.c +++ b/kernel/bpf/ringbuf.c @@ -315,6 +315,9 @@ static void *__bpf_ringbuf_reserve(struct bpf_ringbuf *rb, u64 size) return NULL; len = round_up(size + BPF_RINGBUF_HDR_SZ, 8); + if (len > rb->mask + 1) + return NULL; + cons_pos = smp_load_acquire(&rb->consumer_pos); if (in_nmi()) { |