BUG: workqueue leaked lock or atomic: kworker/u4:15/0x00000001/29707 last function: wb_workfn CPU: 1 PID: 29707 Comm: kworker/u4:15 Tainted: G W 5.15.148-syzkaller-00718-g993bed180178 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: writeback wb_workfn (flush-8:0) Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 dump_stack+0x15/0x17 lib/dump_stack.c:113 process_one_work+0x8d8/0xc10 kernel/workqueue.c:2340 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 BUG: workqueue leaked lock or atomic: kworker/u4:15/0x00000001/29707 last function: wb_workfn CPU: 1 PID: 29707 Comm: kworker/u4:15 Tainted: G W 5.15.148-syzkaller-00718-g993bed180178 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: writeback wb_workfn (flush-8:0) Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 dump_stack+0x15/0x17 lib/dump_stack.c:113 process_one_work+0x8d8/0xc10 kernel/workqueue.c:2340 process_scheduled_works kernel/workqueue.c:2388 [inline] worker_thread+0xe02/0x12a0 kernel/workqueue.c:2474 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 BUG: scheduling while atomic: kworker/u4:15/29707/0x00000002 Modules linked in: Preemption disabled at: [] spin_lock include/linux/spinlock.h:363 [inline] [] ext4_do_update_inode fs/ext4/inode.c:5089 [inline] [] ext4_mark_iloc_dirty+0x307/0x3f40 fs/ext4/inode.c:5791 CPU: 1 PID: 29707 Comm: kworker/u4:15 Tainted: G W 5.15.148-syzkaller-00718-g993bed180178 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: 0x0 (flush-8:0) Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 dump_stack+0x15/0x17 lib/dump_stack.c:113 __schedule_bug+0x195/0x260 kernel/sched/core.c:5707 schedule_debug kernel/sched/core.c:5734 [inline] __schedule+0xd19/0x1590 kernel/sched/core.c:6402 schedule+0x11f/0x1e0 kernel/sched/core.c:6595 worker_thread+0xf7f/0x12a0 kernel/workqueue.c:2493 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298