------------[ cut here ]------------ WARNING: CPU: 0 PID: 6259 at kernel/workqueue.c:2322 current_wq_worker kernel/workqueue_internal.h:69 [inline] WARNING: CPU: 0 PID: 6259 at kernel/workqueue.c:2322 is_chained_work kernel/workqueue.c:2264 [inline] WARNING: CPU: 0 PID: 6259 at kernel/workqueue.c:2322 __queue_work+0xdec/0x12b0 kernel/workqueue.c:2321 Modules linked in: CPU: 0 PID: 6259 Comm: syz-executor.3 Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 004010c5 (nzcv daIF +PAN -UAO -TCO -DIT +SSBS BTYPE=--) pc : __queue_work+0xdec/0x12b0 kernel/workqueue_internal.h:69 lr : current_wq_worker kernel/workqueue_internal.h:69 [inline] lr : is_chained_work kernel/workqueue.c:2264 [inline] lr : __queue_work+0xdec/0x12b0 kernel/workqueue.c:2321 sp : ffff800080007b70 x29: ffff800080007bb0 x28: 1fffe0001cf55001 x27: dfff800000000000 x26: dfff800000000000 x25: ffff0000d57f5000 x24: 0000000000000008 x23: ffff0000d57f51c0 x22: ffff0000e7aa8008 x21: 0000000000000100 x20: ffff0000e7aa8000 x19: ffff0000d8590c10 x18: ffff8000800075c0 x17: 000000000002047a x16: ffff80008ae725bc x15: 0000000000000002 x14: ffff80008ee80668 x13: dfff800000000000 x12: 00000000bbbcc0ba x11: 000000004194a3ac x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000e7aa8000 x7 : ffff80008043f378 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008d5ef4c0 x2 : ffff0000d8590c10 x1 : 0000000000000100 x0 : 0000000000000000 Call trace: current_wq_worker kernel/workqueue_internal.h:69 [inline] is_chained_work kernel/workqueue.c:2264 [inline] __queue_work+0xdec/0x12b0 kernel/workqueue.c:2321 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2529 call_timer_fn+0x1b4/0x93c kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1839 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x59c/0x7b4 kernel/time/timer.c:2429 run_timer_base kernel/time/timer.c:2438 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2448 __do_softirq+0x2e4/0xd2c kernel/softirq.c:554 ____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:633 irq_exit_rcu+0x14/0x84 kernel/softirq.c:645 __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 __kern_my_cpu_offset+0x18/0x20 arch/arm64/include/asm/percpu.h:46 debug_smp_processor_id+0x20/0x2c lib/smp_processor_id.c:60 rcu_lockdep_current_cpu_online+0x84/0x218 kernel/rcu/tree.c:4285 rcu_read_lock_held_common kernel/rcu/update.c:113 [inline] rcu_read_lock_held+0x20/0x50 kernel/rcu/update.c:349 lookup_page_ext mm/page_ext.c:240 [inline] page_ext_get+0x1b4/0x2d4 mm/page_ext.c:509 page_table_check_set+0xa0/0x484 mm/page_table_check.c:109 __page_table_check_ptes_set+0x280/0x2d4 mm/page_table_check.c:196 page_table_check_ptes_set include/linux/page_table_check.h:74 [inline] __set_ptes arch/arm64/include/asm/pgtable.h:384 [inline] set_ptes arch/arm64/include/asm/pgtable.h:1505 [inline] __copy_present_ptes mm/memory.c:953 [inline] copy_present_ptes mm/memory.c:1036 [inline] copy_pte_range mm/memory.c:1151 [inline] copy_pmd_range mm/memory.c:1238 [inline] copy_pud_range mm/memory.c:1275 [inline] copy_p4d_range mm/memory.c:1299 [inline] copy_page_range+0x3a74/0x4fc8 mm/memory.c:1397 dup_mmap kernel/fork.c:747 [inline] dup_mm kernel/fork.c:1687 [inline] copy_mm+0xf4c/0x1bbc kernel/fork.c:1736 copy_process+0x1838/0x3280 kernel/fork.c:2389 kernel_clone+0x1d8/0x838 kernel/fork.c:2796 __do_sys_clone kernel/fork.c:2939 [inline] __se_sys_clone kernel/fork.c:2907 [inline] __arm64_sys_clone+0x1f8/0x24c kernel/fork.c:2907 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 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: 257417 hardirqs last enabled at (257416): [] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:387 hardirqs last disabled at (257417): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (257417): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (256960): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (257371): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun