BUG: sleeping function called from invalid context at kernel/workqueue.c:3028 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 25017, name: kworker/0:1 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 5 locks held by kworker/0:1/25017: #0: ffff888140738138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140738138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140738138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140738138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline] #0: ffff888140738138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #0: ffff888140738138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1680 kernel/workqueue.c:2278 #1: ffffc9000bbf7db0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1680 kernel/workqueue.c:2282 #2: ffff88814794b220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:758 [inline] #2: ffff88814794b220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5685 #3: ffffffff8bb71120 (console_lock){+.+.}-{0:0}, at: dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4592 #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: 1938511 hardirqs last enabled at (1938510): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (1938510): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (1938511): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1938511): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (1938390): [] spin_unlock_bh include/linux/spinlock.h:399 [inline] softirqs last enabled at (1938390): [] nsim_dev_trap_report drivers/net/netdevsim/dev.c:817 [inline] softirqs last enabled at (1938390): [] nsim_dev_trap_report_work+0x855/0xbc0 drivers/net/netdevsim/dev.c:843 softirqs last disabled at (1938507): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (1938507): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 Preemption disabled at: [] vprintk_emit+0x13d/0x4f0 kernel/printk/printk.c:2241 CPU: 0 PID: 25017 Comm: kworker/0:1 Not tainted 5.16.0-rc5-next-20211216-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 51 74 4a 00 5d be 03 00 00 00 e9 66 53 70 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 79 6e 8a 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc9000bbf75b0 EFLAGS: 00000216 RAX: 00000000000031e8 RBX: 0000000000000000 RCX: ffffc9001051c000 RDX: 0000000000040000 RSI: ffffffff815f10cc RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ffa7947 R10: ffffffff815f10c2 R11: 0000000000000000 R12: ffffffff84e21ab0 R13: 0000000000000200 R14: ffffc9000bbf7610 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:4592 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4603 __dev_printk+0xcf/0xf5 drivers/base/core.c:4615 _dev_info+0xd7/0x109 drivers/base/core.c:4661 usb_disconnect.cold+0x25/0x78e drivers/usb/core/hub.c:2207 hub_port_connect drivers/usb/core/hub.c:5199 [inline] hub_port_connect_change drivers/usb/core/hub.c:5499 [inline] port_event drivers/usb/core/hub.c:5657 [inline] hub_event+0x1e39/0x44d0 drivers/usb/core/hub.c:5739 process_one_work+0x9ac/0x1680 kernel/workqueue.c:2307 worker_thread+0x652/0x11c0 kernel/workqueue.c:2454 kthread+0x405/0x4f0 kernel/kthread.c:345 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: e9 51 74 4a 00 jmpq 0x4a745a 9: 5d pop %rbp a: be 03 00 00 00 mov $0x3,%esi f: e9 66 53 70 02 jmpq 0x270537a 14: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 1a: 48 8b be b0 01 00 00 mov 0x1b0(%rsi),%rdi 21: e8 b4 ff ff ff callq 0xffffffda 26: 31 c0 xor %eax,%eax 28: c3 retq 29: 90 nop * 2a: 65 8b 05 79 6e 8a 7e mov %gs:0x7e8a6e79(%rip),%eax # 0x7e8a6eaa <-- trapping instruction 31: 89 c1 mov %eax,%ecx 33: 48 8b 34 24 mov (%rsp),%rsi 37: 81 e1 00 01 00 00 and $0x100,%ecx 3d: 65 gs 3e: 48 rex.W 3f: 8b .byte 0x8b