net: don't record/verify UDP sequence numbers if buffer is too small

This causes a bunch of out-of-bounds accesses if you have really small buffer
sizes (i.e. 16 bytes will crash).

Signed-off-by: Steven Noonan <steven@uplinklabs.net>
Signed-off-by: Jens Axboe <axboe@fb.com>
1 file changed