Stefano Garzarella a58da53ffd vhost/vsock: don't check owner in vhost_vsock_stop() while releasing ... 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>		2022-02-23 12:32:33 +00:00
..
iotlb.c	vhost-iotlb: Add an opaque pointer for vhost IOTLB	2021-09-06 07:20:57 -04:00
Kconfig	vhost_vdpa: implement IRQ offloading in vhost_vdpa	2020-08-05 11:08:42 -04:00
Makefile	vhost: introduce vDPA-based backend	2020-04-02 10:41:40 -04:00
net.c	vhost_net: fix OoB on sendmsg() failure.	2021-09-09 10:52:12 +01:00
scsi.c	vhost scsi: Convert to SPDX identifier	2021-09-05 16:23:08 -04:00
test.c	vhost/test: fix memory leak of vhost virtqueues	2022-01-14 18:50:53 -05:00
test.h	tools/virtio: Add --reset	2020-06-22 12:34:21 -04:00
vdpa.c	vdpa: Protect vdpa reset with cf_mutex	2022-01-14 18:50:54 -05:00
vhost.c	vhost: Fix the calculation in vhost_overflow()	2021-08-11 06:44:15 -04:00
vhost.h	vhost: fix up vhost_work coding style	2021-07-03 04:50:55 -04:00
vringh.c	vringh: Use wiov->used to check for read/write desc order	2021-08-11 06:44:24 -04:00
vsock.c	vhost/vsock: don't check owner in vhost_vsock_stop() while releasing	2022-02-23 12:32:33 +00:00