Stefano Garzarella 914f93fee6 vhost/vsock: don't check owner in vhost_vsock_stop() while releasing ... commit a58da53ffd70294ebea8ecd0eb45fd0d74add9f9 upstream. vhost_vsock_stop() calls vhost_dev_check_owner() to check the device ownership. It expects current->mm to be valid. vhost_vsock_stop() is also called by vhost_vsock_dev_release() when the user has not done close(), so when we are in do_exit(). In this case current->mm is invalid and we're releasing the device, so we should clean it anyway. Let's check the owner only when vhost_vsock_stop() is called by an ioctl. When invoked from release we can not fail so we don't check return code of vhost_vsock_stop(). We need to stop vsock even if it's not the owner. Fixes: 433fc58e6b ("VSOCK: Introduce vhost_vsock.ko") Cc: stable@vger.kernel.org Reported-by: syzbot+1e3ea63db39f2b4440e0@syzkaller.appspotmail.com Reported-and-tested-by: syzbot+3140b17cb44a7b174008@syzkaller.appspotmail.com Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-03-02 11:38:09 +01:00
..
Kconfig
Kconfig.vringh
Makefile
net.c
scsi.c
test.c
test.h
vhost.c
vhost.h
vringh.c	vringh: Use wiov->used to check for read/write desc order	2021-09-03 09:58:02 +02:00
vsock.c	vhost/vsock: don't check owner in vhost_vsock_stop() while releasing	2022-03-02 11:38:09 +01:00