On Thu, Mar 26, 2020 at 10:40:06PM +1100, Michael Ellerman wrote:

quoted

The code in question (link_path_walk() in fs/namei.c ) was recently changed by
following commit:

commit 881386f7e46a: 
  link_path_walk(): sample parent's i_uid and i_mode for the last component

That and about 10 other commits.

Unless Al can give us a clue we'll need to bisect.

	Already fixed yesterday.  It's not link_path_walk(), it's handle_dots()
ignoring an error returned by step_into().

commit 5e3c3570ec97 is the broken one; commit 20971012f63e is its variant with the
fix folded in.  So next-20200325 has the bug and next-20200326 should have it
fixed.  Could you check the current -next and see if you still observe that crap?