Jason Wang ed25667f33 vhost: use mutex_lock_nested() in vhost_dev_lock_vqs() ... commit e9cb423913 upstream. We used to call mutex_lock() in vhost_dev_lock_vqs() which tries to hold mutexes of all virtqueues. This may confuse lockdep to report a possible deadlock because of trying to hold locks belong to same class. Switch to use mutex_lock_nested() to avoid false positive. Fixes: 6b1e6cc785 ("vhost: new device IOTLB API") Reported-by: syzbot+dbb7c1161485e61b0241@syzkaller.appspotmail.com Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-02-25 11:07:45 +01:00
..
Kconfig	tap: tap as an independent module	2017-02-11 20:59:41 -05:00
Kconfig.vringh	vhost: split out vringh Kconfig	2016-08-02 16:54:28 +03:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
net.c	vhost_net: stop device during reset owner	2018-02-13 10:19:47 +01:00
scsi.c	fix a page leak in vhost_scsi_iov_to_sgl() error recovery	2017-11-30 08:40:49 +00:00
test.c	Merge 4.8-rc5 into char-misc-next	2016-09-05 08:04:07 +02:00
test.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vhost.c	vhost: use mutex_lock_nested() in vhost_dev_lock_vqs()	2018-02-25 11:07:45 +01:00
vhost.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vringh.c	vringh: kill off ACCESS_ONCE()	2016-12-16 00:13:36 +02:00
vsock.c	mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic	2017-07-12 16:26:03 -07:00