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| author | Kevin Wolf <kwolf@redhat.com> | 2011-06-01 10:50:00 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-06-08 11:56:40 +0200 |
| commit | 80fa3341a70151d250be92ae900e3c1580817540 (patch) | |
| tree | 890de6480719897bcd67dbd1e9a2c346401a922e | |
| parent | 30cdc48cc8c9ad28e1b95460021d0c121b3ed4f4 (diff) | |
| download | qemu-80fa3341a70151d250be92ae900e3c1580817540.zip qemu-80fa3341a70151d250be92ae900e3c1580817540.tar.gz qemu-80fa3341a70151d250be92ae900e3c1580817540.tar.bz2 | |
qcow2: Fix memory leaks in error cases
This fixes memory leaks that may be caused by I/O errors during L1 table growth
(can happen during save_vm) and in qemu-img check.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block/qcow2-cluster.c | 2 | ||||
| -rw-r--r-- | block/qcow2-refcount.c | 9 |
2 files changed, 7 insertions, 4 deletions
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c index 750abe3..c9e7bbd 100644 --- a/block/qcow2-cluster.c +++ b/block/qcow2-cluster.c @@ -70,7 +70,7 @@ int qcow2_grow_l1_table(BlockDriverState *bs, int min_size, bool exact_size) ret = qcow2_cache_flush(bs, s->refcount_block_cache); if (ret < 0) { - return ret; + goto fail; } BLKDBG_EVENT(bs->file, BLKDBG_L1_GROW_WRITE_TABLE); diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c index d62dc1c..ac95b88 100644 --- a/block/qcow2-refcount.c +++ b/block/qcow2-refcount.c @@ -1086,7 +1086,7 @@ int qcow2_check_refcounts(BlockDriverState *bs, BdrvCheckResult *res) ret = check_refcounts_l1(bs, res, refcount_table, nb_clusters, s->l1_table_offset, s->l1_size, 1); if (ret < 0) { - return ret; + goto fail; } /* snapshots */ @@ -1095,7 +1095,7 @@ int qcow2_check_refcounts(BlockDriverState *bs, BdrvCheckResult *res) ret = check_refcounts_l1(bs, res, refcount_table, nb_clusters, sn->l1_table_offset, sn->l1_size, 0); if (ret < 0) { - return ret; + goto fail; } } inc_refcounts(bs, res, refcount_table, nb_clusters, @@ -1159,8 +1159,11 @@ int qcow2_check_refcounts(BlockDriverState *bs, BdrvCheckResult *res) } } + ret = 0; + +fail: qemu_free(refcount_table); - return 0; + return ret; } |