| commit | 2226f9592422c320e37585825a4f7b8bfb8c8504 | |
| author | Kal Conley <kal.conley@dectris.com> | |
| Sun, 10 Feb 2019 08:57:11 +0000 (10 09:57 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Wed, 27 Feb 2019 09:08:06 +0000 (27 10:08 +0100) | ||
| tree | 3033d75891f026473a77e810c6834ff98f9f98cd | treesnapshot (tar.gz zip) |
| parent | 7c3969ff8bd40272dfbbc00dd16bf87547c818c8 | commitdiff |
net/packet: fix 4gb buffer limit due to overflow check
[ Upstream commit fc62814d690cf62189854464f4bd07457d5e9e50 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit fc62814d690cf62189854464f4bd07457d5e9e50 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| net/packet/af_packet.c | diffblobblamehistory |