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| author | Kevin Wolf <kwolf@redhat.com> | 2016-05-20 18:49:07 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-05-25 19:04:10 +0200 |
| commit | 88be7b4be4aa17c88247e162bdd7577ea79db94f (patch) | |
| tree | cec7d9da5079f6dba0c65945925aedfd8c77267c /migration/block.c | |
| parent | 287db79df8af8e31f18e262feb5e05103a09e4d4 (diff) | |
| download | qemu-88be7b4be4aa17c88247e162bdd7577ea79db94f.zip qemu-88be7b4be4aa17c88247e162bdd7577ea79db94f.tar.gz qemu-88be7b4be4aa17c88247e162bdd7577ea79db94f.tar.bz2 | |
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 'migration/block.c')
| -rw-r--r-- | migration/block.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/migration/block.c b/migration/block.c index a7a76a0..e0628d1 100644 --- a/migration/block.c +++ b/migration/block.c @@ -383,7 +383,7 @@ static void init_blk_migration(QEMUFile *f) BlockDriverState *bs; BlkMigDevState *bmds; int64_t sectors; - BdrvNextIterator *it = NULL; + BdrvNextIterator it; block_mig_state.submitted = 0; block_mig_state.read_done = 0; @@ -394,7 +394,7 @@ static void init_blk_migration(QEMUFile *f) block_mig_state.zero_blocks = migrate_zero_blocks(); - while ((it = bdrv_next(it, &bs))) { + for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) { if (bdrv_is_read_only(bs)) { continue; } |