| commit | 8caed3d564672e8bc6d2e4c6a35228afd01f4723 | |
| author | Prasad J Pandit <pjp@fedoraproject.org> | |
| Wed, 12 Oct 2016 09:10:55 +0000 (12 14:40 +0530) | ||
| committer | Jason Wang <jasowang@redhat.com> | |
| Wed, 26 Oct 2016 01:57:59 +0000 (26 09:57 +0800) | ||
| tree | 5e8887f57d22e9e07b0982e018d51b6380f977a6 | treesnapshot (tar.gz zip) |
| parent | 2634ab7fe29b3f75d0865b719caf8f310d634aae | commitdiff |
net: rocker: set limit to DMA buffer size
Rocker network switch emulator has test registers to help debug
DMA operations. While testing host DMA access, a buffer address
is written to register 'TEST_DMA_ADDR' and its size is written to
register 'TEST_DMA_SIZE'. When performing TEST_DMA_CTRL_INVERT
test, if DMA buffer size was greater than 'INT_MAX', it leads to
an invalid buffer access. Limit the DMA buffer size to avoid it.
Reported-by: Huawei PSIRT <psirt@huawei.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Rocker network switch emulator has test registers to help debug
DMA operations. While testing host DMA access, a buffer address
is written to register 'TEST_DMA_ADDR' and its size is written to
register 'TEST_DMA_SIZE'. When performing TEST_DMA_CTRL_INVERT
test, if DMA buffer size was greater than 'INT_MAX', it leads to
an invalid buffer access. Limit the DMA buffer size to avoid it.
Reported-by: Huawei PSIRT <psirt@huawei.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
| hw/net/rocker/rocker.c | diffblobblamehistory |