https://bugzilla.kernel.org/show_bug.cgi?id=204371
--- Comment #31 from Christophe Leroy (christophe.le...@c-s.fr) --- Problem 1: test_add_free_space_entry() contains a kzalloc() to allocate a bitmap. That's the problem. Problem 2: btrfs_free_dummy_fs_info() has 3 kfree(). Need to know which one is creating your last warning (kernel BUG at mm/slub.c:3952!) -- You are receiving this mail because: You are on the CC list for the bug.