shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 20:07:46 +09:00
Code Issues Packages Projects Releases Wiki Activity

dm thin metadata: Avoid returning cmd->bm wild pointer on error

Browse Source 
commit 219403d7e5 upstream.

Maybe __create_persistent_data_objects() caller will use PTR_ERR as a
pointer, it will lead to some strange things.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ye Bin
2020-09-01 14:25:43 +08:00
committed by Chris
parent 8f98e2686a
commit 7b20541f30
1 changed files with 6 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/md/dm-thin-metadata.c
View File

@@ -700,12 +700,16 @@ static int __create_persistent_data_objects(struct dm_pool_metadata *pmd, bool f
THIN_MAX_CONCURRENT_LOCKS);
if (IS_ERR(pmd->bm)) {
DMERR("could not create block manager");
return PTR_ERR(pmd->bm);
r = PTR_ERR(pmd->bm);
pmd->bm = NULL;
return r;
}
r = __open_or_format_metadata(pmd, format_device);
if (r)
if (r) {
dm_block_manager_destroy(pmd->bm);
pmd->bm = NULL;
}
return r;
}