------------[ cut here ]------------ WARNING: CPU: 0 PID: 6536 at kernel/workqueue.c:2259 current_wq_worker kernel/workqueue_internal.h:69 [inline] WARNING: CPU: 0 PID: 6536 at kernel/workqueue.c:2259 is_chained_work kernel/workqueue.c:2201 [inline] WARNING: CPU: 0 PID: 6536 at kernel/workqueue.c:2259 __queue_work+0xe50/0x1308 kernel/workqueue.c:2258 Modules linked in: CPU: 0 UID: 0 PID: 6536 Comm: syz.2.24 Not tainted 6.11.0-rc4-syzkaller-g048499f92ed7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 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:2201 [inline] lr : __queue_work+0xe50/0x1308 kernel/workqueue.c:2258 sp : ffff800080007b20 x29: ffff800080007b70 x28: 1fffe00019297791 x27: dfff800000000000 x26: dfff800000000000 x25: ffff0000ea0b1800 x24: 0000000000000008 x23: 1fffe00019297791 x22: ffff0000ea0b19c0 x21: 0000000000000100 x20: ffff0000c94bbc80 x19: ffff0000ea0ac930 x18: ffff0001fea8b9d0 x17: ffff800124878000 x16: ffff800083018ec4 x15: 0000000000000002 x14: ffff80008f510510 x13: dfff800000000000 x12: 00000000f5f6fa52 x11: 00000000d89083c1 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c94bbc80 x7 : ffff800080451bbc x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008dbbf7e0 x2 : ffff0000ea0ac930 x1 : 0000000000000100 x0 : 0000000000000000 Call trace: current_wq_worker kernel/workqueue_internal.h:69 [inline] is_chained_work kernel/workqueue.c:2201 [inline] __queue_work+0xe50/0x1308 kernel/workqueue.c:2258 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2487 call_timer_fn+0x1b4/0x8e8 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1838 [inline] __run_timers kernel/time/timer.c:2417 [inline] __run_timer_base+0x59c/0x7b4 kernel/time/timer.c:2428 run_timer_base kernel/time/timer.c:2437 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2447 handle_softirqs+0x2e4/0xbfc 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:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x1d8/0x434 kernel/softirq.c:637 irq_exit_rcu+0x14/0x84 kernel/softirq.c:649 __el1_irq arch/arm64/kernel/entry-common.c:537 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:551 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:556 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:594 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] refill_obj_stock+0x200/0x2d8 mm/memcontrol.c:2907 obj_cgroup_uncharge mm/memcontrol.c:2960 [inline] __memcg_slab_free_hook+0x1fc/0x330 mm/memcontrol.c:3047 memcg_slab_free_hook mm/slub.c:2186 [inline] slab_free mm/slub.c:4470 [inline] kmem_cache_free+0x25c/0x4d0 mm/slub.c:4548 anon_vma_chain_free mm/rmap.c:147 [inline] unlink_anon_vmas+0x48c/0x520 mm/rmap.c:447 free_pgtables+0x244/0x6f0 mm/memory.c:388 exit_mmap+0x3a4/0xcb8 mm/mmap.c:3423 __mmput+0xec/0x338 kernel/fork.c:1345 mmput+0x70/0xac kernel/fork.c:1367 exit_mm+0x148/0x210 kernel/exit.c:571 do_exit+0x470/0x1ad0 kernel/exit.c:869 do_group_exit+0x194/0x22c kernel/exit.c:1031 get_signal+0x1414/0x1530 kernel/signal.c:2917 do_signal+0x254/0x4014 arch/arm64/kernel/signal.c:1308 do_notify_resume+0x74/0x1f4 arch/arm64/kernel/entry-common.c:148 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 863 hardirqs last enabled at (862): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (862): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (863): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (863): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (652): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (652): [] release_sock+0x154/0x1b8 net/core/sock.c:3567 softirqs last disabled at (839): [] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun