| commit | 65745422a898741ee0e7068ef06624ab06e8aefa | [log] [tgz] |
|---|---|---|
| author | Amit Shah <amit.shah@redhat.com> | Tue Sep 14 13:26:16 2010 +0530 |
| committer | Rusty Russell <rusty@rustcorp.com.au> | Tue Sep 21 10:54:01 2010 +0930 |
| tree | adee25ae37886d79f8319ce69673a75036423c28 | |
| parent | 6df7aadcd9290807c464675098b5dd2dc9da5075 [diff] |
virtio: console: Prevent userspace from submitting NULL buffers A userspace could submit a buffer with 0 length to be written to the host. Prevent such a situation. This was not needed previously, but recent changes in the way write() works exposed this condition to trigger a virtqueue event to the host, causing a NULL buffer to be sent across. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> CC: stable@kernel.org