Re: [PATCHv3] vhost-net: fix use-after-free in vhost_net_flush

2013-07-09 Thread David Miller
From: "Michael S. Tsirkin" Date: Sun, 7 Jul 2013 14:26:53 +0300 > vhost_net_ubuf_put_and_wait has a confusing name: > it will actually also free it's argument. > Thus since commit 1280c27f8e29acf4af2da914e80ec27c3dbd5c01 > "vhost-net: flush outstanding DMAs on memory change" > vhost_net_flush

[PATCHv3] vhost-net: fix use-after-free in vhost_net_flush

2013-07-07 Thread Michael S. Tsirkin
vhost_net_ubuf_put_and_wait has a confusing name: it will actually also free it's argument. Thus since commit 1280c27f8e29acf4af2da914e80ec27c3dbd5c01 "vhost-net: flush outstanding DMAs on memory change" vhost_net_flush tries to use the argument after passing it to vhost_net_ubuf_put_and_wait,