luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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>
This commit is contained in:
Ye Bin 2020-09-01 14:25:42 +08:00 committed by Mike Snitzer
parent e27fec66f0
commit d16ff19e69
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -537,12 +537,16 @@ static int __create_persistent_data_objects(struct dm_cache_metadata *cmd,
CACHE_MAX_CONCURRENT_LOCKS);
if (IS_ERR(cmd->bm)) {
DMERR("could not create block manager");
return PTR_ERR(cmd->bm);
r = PTR_ERR(cmd->bm);
cmd->bm = NULL;
return r;
}
r = __open_or_format_metadata(cmd, may_format_device);
if (r)
if (r) {
dm_block_manager_destroy(cmd->bm);
cmd->bm = NULL;
}
return r;
}