diff options
| author | Jason Wang <jasowang@redhat.com> | 2012-05-02 11:42:15 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 09:04:42 -0700 |
| commit | 6d0535e8f0406ba353c06a5417e9caa498733372 (patch) | |
| tree | bac8428aa8261f7faa92ea9cebc177896953ab0c /kernel/trace | |
| parent | 21359ac3aef0455038f6295d6f8b3aca7beabfd9 (diff) | |
macvtap: zerocopy: validate vectors before building skb
commit b92946e2919134ebe2a4083e4302236295ea2a73 upstream.
There're several reasons that the vectors need to be validated:
- Return error when caller provides vectors whose num is greater than UIO_MAXIOV.
- Linearize part of skb when userspace provides vectors grater than MAX_SKB_FRAGS.
- Return error when userspace provides vectors whose total length may exceed
- MAX_SKB_FRAGS * PAGE_SIZE.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/trace')
0 files changed, 0 insertions, 0 deletions