system/qemu
system/qemu
1
0
Fork 0
mirror of https://gitlab.com/qemu-project/qemu synced 2024-11-05 20:35:44 +00:00
Code Issues Projects Releases Packages Wiki Activity

qcow2: Fix memory leak in COW error path

Browse source 
This triggers if bs->drv becomes NULL in a concurrent request. This is
currently only the case when corruption prevention kicks in (i.e. at
most once per image, and after that it produces I/O errors).

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf 2014-05-19 17:56:01 +02:00 committed by Stefan Hajnoczi
parent 4ba6fabfb4
commit bd60436936
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
block/qcow2-cluster.c
View file

@ -379,7 +379,8 @@ static int coroutine_fn copy_sectors(BlockDriverState *bs,
BLKDBG_EVENT(bs->file, BLKDBG_COW_READ);
if (!bs->drv) {
return -ENOMEDIUM;
ret = -ENOMEDIUM;
goto out;
}
/* Call .bdrv_co_readv() directly instead of using the public block-layer