Re: [PATCH net] vhost: validate vhost_get_vq_desc return value

2014-03-28 Thread David Miller
From: Michael S. Tsirkin m...@redhat.com Date: Thu, 27 Mar 2014 12:53:37 +0200 vhost fails to validate negative error code from vhost_get_vq_desc causing a crash: we are using -EFAULT which is 0xfff2 as vector size, which exceeds the allocated size. The code in question was introduced

[PATCH net] vhost: validate vhost_get_vq_desc return value

2014-03-27 Thread Michael S. Tsirkin
vhost fails to validate negative error code from vhost_get_vq_desc causing a crash: we are using -EFAULT which is 0xfff2 as vector size, which exceeds the allocated size. The code in question was introduced in commit 8dd014adfea6f173c1ef6378f7e5e7924866c923 vhost-net: mergeable buffers