BUG: sleeping function called from invalid context at kernel/workqueue.c:3028 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/0 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 1 lock held by swapper/0/0: #0: ffffc90000007d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #0: ffffc90000007d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1411 irq event stamp: 4529039 hardirqs last enabled at (4529038): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (4529038): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (4529039): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (4529039): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (4529022): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (4529022): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 softirqs last disabled at (4529035): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (4529035): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 Preemption disabled at: [] schedule_preempt_disabled+0x19/0x20 kernel/sched/core.c:6429 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-rc6-next-20211222-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9583 start_flush_work kernel/workqueue.c:3028 [inline] __flush_work+0x109/0xb10 kernel/workqueue.c:3092 __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3180 hci_cmd_sync_cancel net/bluetooth/hci_sync.c:346 [inline] hci_cmd_sync_cancel+0xe1/0x170 net/bluetooth/hci_sync.c:338 btusb_tx_complete+0x34a/0x3e0 drivers/bluetooth/btusb.c:1402 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline] RIP: 0010:acpi_idle_do_entry+0x1c6/0x250 drivers/acpi/processor_idle.c:551 Code: 89 de e8 5d f4 1e f8 84 db 75 ac e8 74 f0 1e f8 e8 2f 39 25 f8 eb 0c e8 68 f0 1e f8 0f 00 2d 81 7e b8 00 e8 5c f0 1e f8 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 d7 f2 1e f8 48 85 db RSP: 0018:ffffffff8b807d60 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffffff8b8bc6c0 RSI: ffffffff89592704 RDI: 0000000000000000 RBP: ffff888141fcd864 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817e6058 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888141fcd800 R14: ffff888141fcd864 R15: ffff888017d42804 acpi_idle_enter+0x361/0x500 drivers/acpi/processor_idle.c:687 cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x3e8/0x590 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_kernel+0x47a/0x49b init/main.c:1141 secondary_startup_64_no_verify+0xc3/0xcb BUG: sleeping function called from invalid context at kernel/workqueue.c:3028 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/0 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 1 lock held by swapper/0/0: #0: ffffc90000007d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #0: ffffc90000007d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1411 irq event stamp: 4543829 hardirqs last enabled at (4543828): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (4543828): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (4543829): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (4543829): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (4543812): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (4543812): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 softirqs last disabled at (4543825): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (4543825): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 Preemption disabled at: [] schedule_preempt_disabled+0x19/0x20 kernel/sched/core.c:6429 CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.16.0-rc6-next-20211222-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9583 start_flush_work kernel/workqueue.c:3028 [inline] __flush_work+0x109/0xb10 kernel/workqueue.c:3092 __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3180 hci_cmd_sync_cancel net/bluetooth/hci_sync.c:346 [inline] hci_cmd_sync_cancel+0xe1/0x170 net/bluetooth/hci_sync.c:338 btusb_tx_complete+0x34a/0x3e0 drivers/bluetooth/btusb.c:1402 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline] RIP: 0010:acpi_idle_do_entry+0x1c6/0x250 drivers/acpi/processor_idle.c:551 Code: 89 de e8 5d f4 1e f8 84 db 75 ac e8 74 f0 1e f8 e8 2f 39 25 f8 eb 0c e8 68 f0 1e f8 0f 00 2d 81 7e b8 00 e8 5c f0 1e f8 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 d7 f2 1e f8 48 85 db RSP: 0018:ffffffff8b807d60 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffffff8b8bc6c0 RSI: ffffffff89592704 RDI: 0000000000000000 RBP: ffff888141fcd864 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817e6058 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888141fcd800 R14: ffff888141fcd864 R15: ffff888017d42804 acpi_idle_enter+0x361/0x500 drivers/acpi/processor_idle.c:687 cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x3e8/0x590 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_kernel+0x47a/0x49b init/main.c:1141 secondary_startup_64_no_verify+0xc3/0xcb BUG: sleeping function called from invalid context at kernel/workqueue.c:3028 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 15774, name: kworker/0:8 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 5 locks held by kworker/0:8/15774: #0: ffff8881413c6d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881413c6d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff8881413c6d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff8881413c6d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline] #0: ffff8881413c6d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #0: ffff8881413c6d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1680 kernel/workqueue.c:2278 #1: ffffc9001074fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1680 kernel/workqueue.c:2282 #2: ffff88801d9d9220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline] #2: ffff88801d9d9220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688 #3: ffffffff8bb710e0 (console_lock){+.+.}-{0:0}, at: dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4588 #4: ffffc90000007d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #4: ffffc90000007d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1411 irq event stamp: 761901 hardirqs last enabled at (761900): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (761900): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (761901): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (761901): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (761718): [] spin_unlock_bh include/linux/spinlock.h:399 [inline] softirqs last enabled at (761718): [] nsim_dev_trap_report drivers/net/netdevsim/dev.c:817 [inline] softirqs last enabled at (761718): [] nsim_dev_trap_report_work+0x855/0xbc0 drivers/net/netdevsim/dev.c:843 softirqs last disabled at (761897): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (761897): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 Preemption disabled at: [] vprintk_emit+0x13d/0x4f0 kernel/printk/printk.c:2241 CPU: 0 PID: 15774 Comm: kworker/0:8 Tainted: G W 5.16.0-rc6-next-20211222-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9583 start_flush_work kernel/workqueue.c:3028 [inline] __flush_work+0x109/0xb10 kernel/workqueue.c:3092 __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3180 hci_cmd_sync_cancel net/bluetooth/hci_sync.c:346 [inline] hci_cmd_sync_cancel+0xe1/0x170 net/bluetooth/hci_sync.c:338 btusb_tx_complete+0x34a/0x3e0 drivers/bluetooth/btusb.c:1402 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200 Code: 48 89 ef 5d e9 b1 75 4a 00 5d be 03 00 00 00 e9 c6 32 71 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 59 58 8a 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc9001074f5b8 EFLAGS: 00000216 RAX: 0000000000002ed9 RBX: 0000000000000000 RCX: ffffc9000f419000 RDX: 0000000000040000 RSI: ffffffff815f159c RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ffb1947 R10: ffffffff815f1592 R11: 0000000000000000 R12: ffffffff84e2e8e0 R13: 0000000000000200 R14: ffffc9001074f618 R15: dffffc0000000000 console_unlock+0x6c2/0xb70 kernel/printk/printk.c:2719 vprintk_emit+0x198/0x4f0 kernel/printk/printk.c:2248 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4588 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4599 __dev_printk+0xcf/0xf5 drivers/base/core.c:4611 _dev_info+0xd7/0x109 drivers/base/core.c:4657 usb_disconnect.cold+0x25/0x78e drivers/usb/core/hub.c:2210 hub_port_connect drivers/usb/core/hub.c:5202 [inline] hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] port_event drivers/usb/core/hub.c:5660 [inline] hub_event+0x1e39/0x44d0 drivers/usb/core/hub.c:5742 process_one_work+0x9ac/0x1680 kernel/workqueue.c:2307 worker_thread+0x652/0x11c0 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:381 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 89 de mov %ebx,%esi 2: e8 5d f4 1e f8 callq 0xf81ef464 7: 84 db test %bl,%bl 9: 75 ac jne 0xffffffb7 b: e8 74 f0 1e f8 callq 0xf81ef084 10: e8 2f 39 25 f8 callq 0xf8253944 15: eb 0c jmp 0x23 17: e8 68 f0 1e f8 callq 0xf81ef084 1c: 0f 00 2d 81 7e b8 00 verw 0xb87e81(%rip) # 0xb87ea4 23: e8 5c f0 1e f8 callq 0xf81ef084 28: fb sti 29: f4 hlt * 2a: 9c pushfq <-- trapping instruction 2b: 5b pop %rbx 2c: 81 e3 00 02 00 00 and $0x200,%ebx 32: fa cli 33: 31 ff xor %edi,%edi 35: 48 89 de mov %rbx,%rsi 38: e8 d7 f2 1e f8 callq 0xf81ef314 3d: 48 85 db test %rbx,%rbx