From: Baokun Li <libaokun1@huawei.com> hulk inclusion category: bugfix bugzilla: 187327,https://gitee.com/openeuler/kernel/issues/I6111I CVE: NA -------------------------------- Print error when hc and md do not match, which is convenient for locating the cause of the problem Signed-off-by: Baokun Li <libaokun1@huawei.com> Reviewed-by: Zhang Yi <yi.zhang@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/md/dm-ioctl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index b839705654d4..b012a2748af8 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -2033,6 +2033,8 @@ int dm_copy_name_and_uuid(struct mapped_device *md, char *name, char *uuid) mutex_lock(&dm_hash_cells_mutex); hc = dm_get_mdptr(md); if (!hc || hc->md != md) { + if (hc) + DMERR("hash cell and mapped device do not match!"); r = -ENXIO; goto out; } -- 2.20.1