| commit | fc62814d690cf62189854464f4bd07457d5e9e50 | [log] [tgz] |
|---|---|---|
| author | Kal Conley <kal.conley@dectris.com> | Sun Feb 10 09:57:11 2019 +0100 |
| committer | David S. Miller <davem@davemloft.net> | Tue Feb 12 13:37:23 2019 -0500 |
| tree | f4764002a6cc91fdfea00ecbc690e787c9bba974 | |
| parent | 1ec17dbd90f8b638f41ee650558609c1af63dfa0 [diff] |
net/packet: fix 4gb buffer limit due to overflow check
When calculating rb->frames_per_block * req->tp_block_nr the result
can overflow. Check it for overflow without limiting the total buffer
size to UINT_MAX.
This change fixes support for packet ring buffers >= UINT_MAX.
Fixes: 8f8d28e4d6d8 ("net/packet: fix overflow in check for tp_frame_nr")
Signed-off-by: Kal Conley <kal.conley@dectris.com>
Signed-off-by: David S. Miller <davem@davemloft.net>