------------[ cut here ]------------ WARNING: CPU: 0 PID: 609 at kernel/workqueue.c:2257 current_wq_worker kernel/workqueue_internal.h:69 [inline] WARNING: CPU: 0 PID: 609 at kernel/workqueue.c:2257 is_chained_work kernel/workqueue.c:2199 [inline] WARNING: CPU: 0 PID: 609 at kernel/workqueue.c:2257 __queue_work+0xe50/0x1308 kernel/workqueue.c:2256 Modules linked in: CPU: 0 UID: 0 PID: 609 Comm: kworker/u8:6 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: loop0 loop_rootcg_workfn pstate: 404000c5 (nZcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __queue_work+0xe50/0x1308 kernel/workqueue_internal.h:69 lr : current_wq_worker kernel/workqueue_internal.h:69 [inline] lr : is_chained_work kernel/workqueue.c:2199 [inline] lr : __queue_work+0xe50/0x1308 kernel/workqueue.c:2256 sp : ffff800080007b20 x29: ffff800080007b70 x28: 1fffe00018e6f001 x27: dfff800000000000 x26: dfff800000000000 x25: ffff0000ed381800 x24: 0000000000000008 x23: 1fffe00018e6f001 x22: ffff0000ed3819c0 x21: 0000000000000100 x20: ffff0000c7378000 x19: ffff0000ed460930 x18: ffff80009c2d77a8 x17: ffff800123dfd000 x16: ffff8000831615b0 x15: 0000000000000002 x14: ffff80008f8d05e8 x13: dfff800000000000 x12: 00000000bbbac011 x11: 0000000044ceb82b x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c7378000 x7 : ffff800080470ed8 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008decc740 x2 : ffff0000ed460930 x1 : 0000000000000100 x0 : 0000000000000000 Call trace: current_wq_worker kernel/workqueue_internal.h:69 [inline] (P) is_chained_work kernel/workqueue.c:2199 [inline] (P) __queue_work+0xe50/0x1308 kernel/workqueue.c:2256 (P) current_wq_worker kernel/workqueue_internal.h:69 [inline] (L) is_chained_work kernel/workqueue.c:2199 [inline] (L) __queue_work+0xe50/0x1308 kernel/workqueue.c:2256 (L) delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2485 call_timer_fn+0x1b4/0x8f0 kernel/time/timer.c:1794 expire_timers kernel/time/timer.c:1840 [inline] __run_timers kernel/time/timer.c:2419 [inline] __run_timer_base+0x59c/0x7b4 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2449 handle_softirqs+0x2e0/0xbf8 kernel/softirq.c:554 __do_softirq+0x14/0x20 kernel/softirq.c:588 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x1d8/0x544 kernel/softirq.c:655 irq_exit_rcu+0x14/0x84 kernel/softirq.c:671 __el1_irq arch/arm64/kernel/entry-common.c:561 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:575 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:580 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore+0x8/0xc arch/arm64/include/asm/irqflags.h:195 (P) lock_is_held_type+0x150/0x1a8 kernel/locking/lockdep.c:5899 (L) __sb_write_started include/linux/fs.h:1740 [inline] sb_write_not_started include/linux/fs.h:1762 [inline] file_write_not_started include/linux/fs.h:1792 [inline] fsnotify_file_area_perm include/linux/fsnotify.h:148 [inline] rw_verify_area+0x180/0x5f0 fs/read_write.c:474 vfs_iter_read+0x10c/0x3bc fs/read_write.c:919 lo_read_simple drivers/block/loop.c:283 [inline] do_req_filebacked drivers/block/loop.c:516 [inline] loop_handle_cmd drivers/block/loop.c:1910 [inline] loop_process_work+0xc3c/0x1fe8 drivers/block/loop.c:1945 loop_rootcg_workfn+0x28/0x38 drivers/block/loop.c:1976 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3391 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 irq event stamp: 332681 hardirqs last enabled at (332680): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (332680): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (332681): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (332681): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (332530): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (332530): [] batadv_nc_purge_paths+0x2f4/0x378 net/batman-adv/network-coding.c:471 softirqs last disabled at (332673): [] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]---