Hi- I'm testing linux-next and am seeing this BUG pop soon after the system boots. Afterwards the system seems otherwise healthy. BUG: spinlock bad magic on CPU#3, kworker/3:1/41 lock: zswap+0xd0/0x140, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 CPU: 3 PID: 41 Comm: kworker/3:1 Not tainted 6.8.0-rc7-next-20240304 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-1.fc38 04/01/2014 Workqueue: cgroup_destroy css_killed_work_fn Call Trace: <TASK> dump_stack_lvl+0x8d/0xb0 do_raw_spin_lock+0x15e/0x1b0 ? __pfx_do_raw_spin_lock+0x10/0x10 ? mark_held_locks+0x5d/0x90 zswap_memcg_offline_cleanup+0x15/0x50 mem_cgroup_css_offline+0x14a/0x1b0 ? css_killed_work_fn+0x21/0x2c0 css_killed_work_fn+0xb6/0x2c0 process_one_work+0x4ac/0xb30 ? __pfx_lock_acquire+0x10/0x10 ? __pfx_process_one_work+0x10/0x10 ? __list_add_valid_or_report+0x33/0xc0 worker_thread+0x392/0x680 ? __kthread_parkme+0xdc/0x100 ? __pfx_worker_thread+0x10/0x10 kthread+0x1ad/0x1f0 ? kthread+0xf0/0x1f0 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x30/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK> -- Chuck Lever
