diff options
Diffstat (limited to 'block/qcow2-snapshot.c')
| -rw-r--r-- | block/qcow2-snapshot.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c index d63c7e17d..8ddaea23b 100644 --- a/block/qcow2-snapshot.c +++ b/block/qcow2-snapshot.c @@ -139,6 +139,9 @@ static int qcow_write_snapshots(BlockDriverState *bs) snapshots_offset = qcow2_alloc_clusters(bs, snapshots_size); offset = snapshots_offset; + if (offset < 0) { + return offset; + } for(i = 0; i < s->nb_snapshots; i++) { sn = s->snapshots + i; @@ -235,6 +238,7 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) QCowSnapshot *snapshots1, sn1, *sn = &sn1; int i, ret; uint64_t *l1_table = NULL; + int64_t l1_table_offset; memset(sn, 0, sizeof(*sn)); @@ -263,7 +267,12 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) goto fail; /* create the L1 table of the snapshot */ - sn->l1_table_offset = qcow2_alloc_clusters(bs, s->l1_size * sizeof(uint64_t)); + l1_table_offset = qcow2_alloc_clusters(bs, s->l1_size * sizeof(uint64_t)); + if (l1_table_offset < 0) { + goto fail; + } + + sn->l1_table_offset = l1_table_offset; sn->l1_size = s->l1_size; if (s->l1_size != 0) { |