Reference in a new issue

Blame

Copy permalink

Reference in a new issue

Copy permalink

Nicholas Bellinger bb3e74b92f vhost-scsi: Take configfs group dependency during VHOST_SCSI_SET_ENDPOINT ... commit ab8edab132 upstream. This patch addresses a bug where individual vhost-scsi configfs endpoint groups can be removed from below while active exports to QEMU userspace still exist, resulting in an OOPs. It adds a configfs_depend_item() in vhost_scsi_set_endpoint() to obtain an explicit dependency on se_tpg->tpg_group in order to prevent individual vhost-scsi WWPN endpoints from being released via normal configfs methods while an QEMU ioctl reference still exists. Also, add matching configfs_undepend_item() in vhost_scsi_clear_endpoint() to release the dependency, once QEMU's reference to the individual group at /sys/kernel/config/target/vhost/$WWPN/$TPGT is released. (Fix up vhost_scsi_clear_endpoint() error path - DanC) Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2014-12-06 15:55:38 -08:00
..
Kconfig	vhost: Make vhost a separate module	2013-07-07 17:33:44 +03:00
Makefile	vhost: Make vhost a separate module	2013-07-07 17:33:44 +03:00
net.c	vhost: validate vhost_get_vq_desc return value	2014-03-28 16:10:35 -04:00
scsi.c	vhost-scsi: Take configfs group dependency during VHOST_SCSI_SET_ENDPOINT	2014-12-06 15:55:38 -08:00
test.c	vhost: remove the dead branch	2013-12-06 15:22:05 -05:00
test.h	vhost test module	2010-12-09 16:00:21 +02:00
vhost.c	vhost: remove the dead branch	2013-12-06 15:22:05 -05:00
vhost.h	vhost: remove the dead branch	2013-12-06 15:22:05 -05:00
vringh.c	Add missing module license tag to vring helpers.	2013-05-08 10:49:03 +09:30