Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "These are mostly minor fixes this time around.  The iscsi-target CHAP
  big-endian bugfix and bump FD_MAX_SECTORS=2048 default patch to allow
  1MB sized I/Os for FILEIO backends on >= v3.5 code are both CC'ed to
  stable.

  Also, there is a persistent reservations regression that has recently
  been reported for >= v3.8.x code, that is currently being tracked down
  for v3.9."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target/pscsi: Reject cross page boundary case in pscsi_map_sg
  target/file: Bump FD_MAX_SECTORS to 2048 to handle 1M sized I/Os
  tcm_vhost: Flush vhost_work in vhost_scsi_flush()
  tcm_vhost: Add missed lock in vhost_scsi_clear_endpoint()
  target: fix possible memory leak in core_tpg_register()
  target/iscsi: Fix mutual CHAP auth on big-endian arches
  target_core_sbc: use noop for SYNCHRONIZE_CACHE

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index 9951297b2427..43fb11ee2e8d 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -850,7 +850,7 @@ static int vhost_scsi_clear_endpoint(
         for (index = 0; index < vs->dev.nvqs; ++index) {
                 if (!vhost_vq_access_ok(&vs->vqs[index])) {
                         ret = -EFAULT;
-                        goto err;
+                        goto err_dev;
                 }
         }
         for (i = 0; i < VHOST_SCSI_MAX_TARGET; i++) {
@@ -860,10 +860,11 @@ static int vhost_scsi_clear_endpoint(
                 if (!tv_tpg)
                         continue;
 
+                mutex_lock(&tv_tpg->tv_tpg_mutex);
                 tv_tport = tv_tpg->tport;
                 if (!tv_tport) {
                         ret = -ENODEV;
-                        goto err;
+                        goto err_tpg;
                 }
 
                 if (strcmp(tv_tport->tport_name, t->vhost_wwpn)) {
@@ -872,16 +873,19 @@ static int vhost_scsi_clear_endpoint(
                                 tv_tport->tport_name, tv_tpg->tport_tpgt,
                                 t->vhost_wwpn, t->vhost_tpgt);
                         ret = -EINVAL;
-                        goto err;
+                        goto err_tpg;
                 }
                 tv_tpg->tv_tpg_vhost_count--;
                 vs->vs_tpg[target] = NULL;
                 vs->vs_endpoint = false;
+                mutex_unlock(&tv_tpg->tv_tpg_mutex);
         }
         mutex_unlock(&vs->dev.mutex);
         return 0;
 
-err:
+err_tpg:
+        mutex_unlock(&tv_tpg->tv_tpg_mutex);
+err_dev:
         mutex_unlock(&vs->dev.mutex);
         return ret;
 }
@@ -937,6 +941,7 @@ static void vhost_scsi_flush(struct vhost_scsi *vs)
 
         for (i = 0; i < VHOST_SCSI_MAX_VQ; i++)
                 vhost_scsi_flush_vq(vs, i);
+        vhost_work_flush(&vs->dev, &vs->vs_completion_work);
 }
 
 static int vhost_scsi_set_features(struct vhost_scsi *vs, u64 features)