[LU-17602] mdd_rename's error handling can break namespace

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.16.0
• Affects Version/s: Lustre 2.14.0, Lustre 2.16.0
• Severity: 3
• Assignee: Alex Zhuravlev
• Reporter: Alex Zhuravlev

Description

			rc2 = __mdd_index_insert(env, mdd_tpobj, tpobj_fid,
						 mdd_object_type(mdd_tobj),
						 tname, handle);

i.e. mdd_rename() can insert tname pointing to own FID.

Issue Links

• is related to: LU-17016 rename across projects incorrectly checks source parent directory