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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2013-09-25 16:00:48 +0200 |
|---|---|---|
| committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2013-09-30 22:32:04 -0500 |
| commit | fc06b430942e84a2a69e2a80a6d5b376a8064020 (patch) | |
| tree | 3ee918808e898e556966e87a6e9f65c4bcfee72f /block/rbd.c | |
| parent | 6bbb9d8100c90deb4843bfa3cf36e75b843c495b (diff) | |
| download | qemu-fc06b430942e84a2a69e2a80a6d5b376a8064020.tar.gz | |
rbd: avoid qemu_rbd_snap_list() memory leaks
When there are no snapshots qemu_rbd_snap_list() returns 0 and the
snapshot table pointer is NULL. Don't forget to free the snaps buffer
we allocated for librbd rbd_snap_list().
When the function succeeds don't forget to free the snaps buffer after
calling rbd_snap_list_end().
Cc: qemu-stable@nongnu.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 9e6337d0818650362149b734d53edf9489f3acaa)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Diffstat (limited to 'block/rbd.c')
| -rw-r--r-- | block/rbd.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/rbd.c b/block/rbd.c index cb71751218..7e7c735d75 100644 --- a/block/rbd.c +++ b/block/rbd.c @@ -934,7 +934,7 @@ static int qemu_rbd_snap_list(BlockDriverState *bs, do { snaps = g_malloc(sizeof(*snaps) * max_snaps); snap_count = rbd_snap_list(s->image, snaps, &max_snaps); - if (snap_count < 0) { + if (snap_count <= 0) { g_free(snaps); } } while (snap_count == -ERANGE); @@ -958,6 +958,7 @@ static int qemu_rbd_snap_list(BlockDriverState *bs, sn_info->vm_clock_nsec = 0; } rbd_snap_list_end(snaps); + g_free(snaps); done: *psn_tab = sn_tab; |