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authorKevin Wolf <kwolf@redhat.com>2016-05-20 18:49:07 +0200
committerKevin Wolf <kwolf@redhat.com>2016-05-25 19:04:10 +0200
commit88be7b4be4aa17c88247e162bdd7577ea79db94f (patch)
treecec7d9da5079f6dba0c65945925aedfd8c77267c /monitor.c
parent287db79df8af8e31f18e262feb5e05103a09e4d4 (diff)
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block: Fix bdrv_next() memory leak
The bdrv_next() users all leaked the BdrvNextIterator after completing the iteration. Simply changing bdrv_next() to free the iterator before returning NULL at the end of list doesn't work because some callers exit the loop before looking at all BDSes. This patch moves the BdrvNextIterator from the heap to the stack of the caller and switches to a bdrv_first()/bdrv_next() interface for initialising the iterator. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'monitor.c')
-rw-r--r--monitor.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/monitor.c b/monitor.c
index 6a32b9b..404d594 100644
--- a/monitor.c
+++ b/monitor.c
@@ -3432,12 +3432,12 @@ static void vm_completion(ReadLineState *rs, const char *str)
{
size_t len;
BlockDriverState *bs;
- BdrvNextIterator *it = NULL;
+ BdrvNextIterator it;
len = strlen(str);
readline_set_completion_index(rs, len);
- while ((it = bdrv_next(it, &bs))) {
+ for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
SnapshotInfoList *snapshots, *snapshot;
AioContext *ctx = bdrv_get_aio_context(bs);
bool ok = false;