BUG: sleeping function called from invalid context at kernel/workqueue.c:3039 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 6541, name: syz-executor.0 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 1 lock held by syz-executor.0/6541: #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: 713417 hardirqs last enabled at (713416): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (713416): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (713417): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (713417): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (711448): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (711448): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 softirqs last disabled at (713409): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (713409): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 Preemption disabled at: [] schedule+0xcb/0x260 kernel/sched/core.c:6368 CPU: 1 PID: 6541 Comm: syz-executor.0 Not tainted 5.16.0-rc4-next-20211208-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: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:ffffc9000284fad8 EFLAGS: 00000202 RAX: 00000000000ae2bf RBX: ffff8880227f8000 RCX: 1ffffffff1b24761 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000284fb20 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817e2ca8 R11: 0000000000000001 R12: ffff8880b9d3aa18 R13: ffff888017be9d40 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 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x24e/0x690 kernel/time/hrtimer.c:2044 hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:2097 common_nsleep+0xa2/0xc0 kernel/time/posix-timers.c:1227 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1267 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1245 [inline] __x64_sys_clock_nanosleep+0x2f4/0x430 kernel/time/posix-timers.c:1245 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fbaa5627871 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f RSP: 002b:00007ffe54070a90 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 00000000000000bc RCX: 00007fbaa5627871 RDX: 00007ffe54070ad0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffe54070b5c R08: 0000000000000000 R09: 00007ffe5411a080 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 0000000000045da8 R14: 0000000000000004 R15: 00007ffe54070bc0 sd 0:0:1:0: [sda] tag#2110 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s sd 0:0:1:0: [sda] tag#2110 CDB: opcode=0xe5 (vendor) sd 0:0:1:0: [sda] tag#2110 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c sd 0:0:1:0: [sda] tag#2110 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d sd 0:0:1:0: [sda] tag#2110 CDB[20]: ba sd 0:0:1:0: [sda] tag#2111 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s sd 0:0:1:0: [sda] tag#2111 CDB: opcode=0xe5 (vendor) sd 0:0:1:0: [sda] tag#2111 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c sd 0:0:1:0: [sda] tag#2111 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d sd 0:0:1:0: [sda] tag#2111 CDB[20]: ba sd 0:0:1:0: [sda] tag#2048 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s sd 0:0:1:0: [sda] tag#2048 CDB: opcode=0xe5 (vendor) sd 0:0:1:0: [sda] tag#2048 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c sd 0:0:1:0: [sda] tag#2048 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d sd 0:0:1:0: [sda] tag#2048 CDB[20]: ba ---------------- 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