diff options
Diffstat (limited to 'module')
| -rw-r--r-- | module/zfs/dsl_dataset.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/module/zfs/dsl_dataset.c b/module/zfs/dsl_dataset.c index d4a3a9e41..3026d8733 100644 --- a/module/zfs/dsl_dataset.c +++ b/module/zfs/dsl_dataset.c @@ -2354,6 +2354,10 @@ dsl_dataset_promote_check(void *arg, dmu_tx_t *tx) } snap = list_head(&ddpa->shared_snaps); + if (snap == NULL) { + err = SET_ERROR(ENOENT); + goto out; + } origin_ds = snap->ds; /* compute origin's new unique space */ @@ -2462,6 +2466,10 @@ dsl_dataset_promote_check(void *arg, dmu_tx_t *tx) * iterate over all bps. */ snap = list_head(&ddpa->origin_snaps); + if (snap == NULL) { + err = SET_ERROR(ENOENT); + goto out; + } err = snaplist_space(&ddpa->shared_snaps, snap->ds->ds_dir->dd_origin_txg, &ddpa->cloneusedsnap); if (err != 0) |