BUG: sleeping function called from invalid context at kernel/workqueue.c:3039 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 8516, name: kworker/1:7 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 1 lock held by kworker/1:7/8516: #0: ffffc90000dc0d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #0: ffffc90000dc0d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1411 irq event stamp: 213851 hardirqs last enabled at (213850): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (213850): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (213851): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (213851): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (213818): [] srcu_invoke_callbacks+0x20a/0x3c0 kernel/rcu/srcutree.c:1272 softirqs last disabled at (213843): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (213843): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 Preemption disabled at: [] schedule+0xcb/0x260 kernel/sched/core.c:6368 CPU: 1 PID: 8516 Comm: kworker/1:7 Not tainted 5.16.0-rc4-next-20211208-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: 0x0 (events) 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:3039 [inline] __flush_work+0x109/0xb10 kernel/workqueue.c:3103 __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3191 hci_cmd_sync_cancel net/bluetooth/hci_sync.c:346 [inline] hci_cmd_sync_cancel+0xe1/0x170 net/bluetooth/hci_sync.c:338 btusb_intr_complete+0x3d3/0x4a0 drivers/bluetooth/btusb.c:969 __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:finish_task_switch.isra.0+0x323/0xb80 kernel/sched/core.c:4866 Code: 03 05 03 08 85 c0 75 02 0f 0b 48 85 db 0f 85 25 01 00 00 4c 89 f7 e8 fc f7 ff ff e8 67 7e 2d 00 fb 65 48 8b 1c 25 40 70 02 00 <48> 8d bb 88 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc90011227ca0 EFLAGS: 00000202 RAX: 0000000000034351 RBX: ffff888073a03a80 RCX: 1ffffffff1b24761 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90011227ce8 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817e2ca8 R11: 0000000000000001 R12: ffff8880b9d3aa18 R13: ffff8880119f0000 R14: ffff8880b9d39cc0 R15: ffff8880b9d3a6f8 context_switch kernel/sched/core.c:4989 [inline] __schedule+0xaba/0x4d90 kernel/sched/core.c:6296 schedule+0xd2/0x260 kernel/sched/core.c:6369 worker_thread+0x15c/0x11f0 kernel/workqueue.c:2486 kthread+0x405/0x4f0 kernel/kthread.c:345 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 BUG: sleeping function called from invalid context at kernel/workqueue.c:3039 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 20, name: kworker/1:0 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 5 locks held by kworker/1:0/20: #0: ffff8880123f1d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880123f1d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff8880123f1d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff8880123f1d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline] #0: ffff8880123f1d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline] #0: ffff8880123f1d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2289 #1: ffffc90000da7db0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2293 #2: ffff888147ce0220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff888147ce0220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4460 drivers/usb/core/hub.c:5671 #3: ffffffff8bb71620 (console_lock){+.+.}-{0:0}, at: dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4593 #4: ffffc90000dc0d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #4: ffffc90000dc0d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1411 irq event stamp: 600121 hardirqs last enabled at (600120): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (600120): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (600121): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (600121): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (600082): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (600082): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 softirqs last disabled at (600117): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (600117): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 Preemption disabled at: [] vprintk_emit+0x13d/0x4f0 kernel/printk/printk.c:2241 CPU: 1 PID: 20 Comm: kworker/1:0 Tainted: G W 5.16.0-rc4-next-20211208-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:3039 [inline] __flush_work+0x109/0xb10 kernel/workqueue.c:3103 __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3191 hci_cmd_sync_cancel net/bluetooth/hci_sync.c:346 [inline] hci_cmd_sync_cancel+0xe1/0x170 net/bluetooth/hci_sync.c:338 btusb_intr_complete+0x3d3/0x4a0 drivers/bluetooth/btusb.c:969 __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 d1 9c 4a 00 5d be 03 00 00 00 e9 d6 ae 6f 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 a9 8c 8a 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc90000da75b8 EFLAGS: 00000212 RAX: 000000000000429e RBX: 0000000000000000 RCX: ffffc9000ef1b000 RDX: 0000000000040000 RSI: ffffffff815efdcc RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ff9e947 R10: ffffffff815efdc2 R11: 0000000000000000 R12: ffffffff84e16300 R13: 0000000000000200 R14: ffffc90000da7618 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:4593 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4604 __dev_printk+0xcf/0xf5 drivers/base/core.c:4616 _dev_info+0xd7/0x109 drivers/base/core.c:4662 usb_disconnect.cold+0x25/0x78e drivers/usb/core/hub.c:2207 hub_port_connect drivers/usb/core/hub.c:5197 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5643 [inline] hub_event+0x1c9c/0x4460 drivers/usb/core/hub.c:5725 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2318 worker_thread+0x658/0x11f0 kernel/workqueue.c:2465 kthread+0x405/0x4f0 kernel/kthread.c:345 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 03 05 03 08 85 c0 add -0x3f7af7fd(%rip),%eax # 0xc0850809 6: 75 02 jne 0xa 8: 0f 0b ud2 a: 48 85 db test %rbx,%rbx d: 0f 85 25 01 00 00 jne 0x138 13: 4c 89 f7 mov %r14,%rdi 16: e8 fc f7 ff ff callq 0xfffff817 1b: e8 67 7e 2d 00 callq 0x2d7e87 20: fb sti 21: 65 48 8b 1c 25 40 70 mov %gs:0x27040,%rbx 28: 02 00 * 2a: 48 8d bb 88 15 00 00 lea 0x1588(%rbx),%rdi <-- trapping instruction 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 48 89 fa mov %rdi,%rdx 3e: 48 rex.W 3f: c1 .byte 0xc1