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| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2017-07-14 15:33:41 +0300 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2017-07-25 16:33:31 +0200 |
| commit | b6b75a99dab760c902c3d355519e0dc2616872e1 (patch) | |
| tree | 6f29d6f7e2c3399d6e04e8fc925f731456804044 /block/qcow2-bitmap.c | |
| parent | 0696ae2c9236a3589f5eaf5b00c12868b6f30a17 (diff) | |
| download | qemu-b6b75a99dab760c902c3d355519e0dc2616872e1.zip qemu-b6b75a99dab760c902c3d355519e0dc2616872e1.tar.gz qemu-b6b75a99dab760c902c3d355519e0dc2616872e1.tar.bz2 | |
qcow2-bitmap: fix bitmap_free
Fix possible crash on error path in
qcow2_remove_persistent_dirty_bitmap. Although bitmap_free was added in
88ddffae8fc the bug was introduced later in commit 469c71edc72 (when
qcow2_remove_persistent_dirty_bitmap was added).
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20170714123341.373857-1-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/qcow2-bitmap.c')
| -rw-r--r-- | block/qcow2-bitmap.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index 3e8735a..e8d3bdb 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -487,6 +487,10 @@ static inline void bitmap_directory_to_be(uint8_t *dir, size_t size) static void bitmap_free(Qcow2Bitmap *bm) { + if (bm == NULL) { + return; + } + g_free(bm->name); g_free(bm); } |