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| author | Amit Shah <amit.shah@redhat.com> | 2010-09-14 13:26:16 +0530 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2010-09-21 10:54:01 +0930 |
| commit | 65745422a898741ee0e7068ef06624ab06e8aefa (patch) | |
| tree | adee25ae37886d79f8319ce69673a75036423c28 /arch/x86/lguest | |
| parent | 6df7aadcd9290807c464675098b5dd2dc9da5075 (diff) | |
| download | blackbird-op-linux-65745422a898741ee0e7068ef06624ab06e8aefa.tar.gz blackbird-op-linux-65745422a898741ee0e7068ef06624ab06e8aefa.zip | |
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
Diffstat (limited to 'arch/x86/lguest')
0 files changed, 0 insertions, 0 deletions
