Author: mav
Date: Tue Nov 8 20:58:25 2016
New Revision: 308448
URL: https://svnweb.freebsd.org/changeset/base/308448
Log:
MFC r307857: Fix panic after ZVOL renamed to name invalid for DEVFS.
Modified:
stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
==============================================================================
--- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c Tue Nov
8 20:57:46 2016 (r308447)
+++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c Tue Nov
8 20:58:25 2016 (r308448)
@@ -780,8 +780,10 @@ zvol_remove_zv(zvol_state_t *zv)
g_topology_lock();
zvol_geom_destroy(zv);
g_topology_unlock();
- } else if (zv->zv_volmode == ZFS_VOLMODE_DEV)
- destroy_dev(zv->zv_dev);
+ } else if (zv->zv_volmode == ZFS_VOLMODE_DEV) {
+ if (zv->zv_dev != NULL)
+ destroy_dev(zv->zv_dev);
+ }
#endif
avl_destroy(&zv->zv_znode.z_range_avl);
@@ -2952,14 +2954,14 @@ zvol_rename_minor(zvol_state_t *zv, cons
} else if (zv->zv_volmode == ZFS_VOLMODE_DEV) {
struct make_dev_args args;
- dev = zv->zv_dev;
- ASSERT(dev != NULL);
- zv->zv_dev = NULL;
- destroy_dev(dev);
- if (zv->zv_total_opens > 0) {
- zv->zv_flags &= ~ZVOL_EXCL;
- zv->zv_total_opens = 0;
- zvol_last_close(zv);
+ if ((dev = zv->zv_dev) != NULL) {
+ zv->zv_dev = NULL;
+ destroy_dev(dev);
+ if (zv->zv_total_opens > 0) {
+ zv->zv_flags &= ~ZVOL_EXCL;
+ zv->zv_total_opens = 0;
+ zvol_last_close(zv);
+ }
}
make_dev_args_init(&args);
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