INFO: task kworker/1:3:3693 blocked for more than 143 seconds. Not tainted 6.0.0-rc3-next-20220901-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:24600 pid:3693 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5197 [inline] __schedule+0xae5/0x52c0 kernel/sched/core.c:6509 schedule+0xda/0x1b0 kernel/sched/core.c:6585 scsi_remove_host+0x348/0x440 drivers/scsi/hosts.c:199 quiesce_and_remove_host drivers/usb/storage/usb.c:867 [inline] usb_stor_disconnect+0x115/0x260 drivers/usb/storage/usb.c:1087 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:550 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:542 __device_release_driver drivers/base/dd.c:1239 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1265 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3704 usb_disable_device+0x356/0x7a0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x259/0x6ed drivers/usb/core/hub.c:2235 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:5653 [inline] hub_event+0x1f86/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc3-next-20220901-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:227 [inline] watchdog+0xcf7/0xfd0 kernel/hung_task.c:384 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3644 Comm: syz-executor.1 Not tainted 6.0.0-rc3-next-20220901-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:108 Code: 00 00 be 01 00 00 00 e9 86 fe 2e 00 66 0f 1f 44 00 00 b8 01 00 00 00 c3 cc cc cc cc cc cc cc cc cc cc 89 ff 89 b7 00 c0 5f ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb 48 RSP: 0018:ffffc90004d67b38 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffffffff8ba1caa0 RCX: 0000000000000020 RDX: 1ffffffff1743956 RSI: 0000000000010002 RDI: 0000000000000380 RBP: ffff8880b9a27200 R08: 0000000000000005 R09: 000000000000003f R10: 0000000000000020 R11: 0000000000000001 R12: 0000000000010002 R13: 0000000000000020 R14: ffff8880b9a2a540 R15: 0000000000000000 FS: 00005555560c1400(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe55176d998 CR3: 0000000032012000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000004 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: apic_write arch/x86/include/asm/apic.h:394 [inline] lapic_next_event+0x4d/0x80 arch/x86/kernel/apic/apic.c:478 clockevents_program_event+0x254/0x370 kernel/time/clockevents.c:334 tick_program_event+0xac/0x140 kernel/time/tick-oneshot.c:44 __hrtimer_reprogram kernel/time/hrtimer.c:681 [inline] hrtimer_reprogram+0x38c/0x440 kernel/time/hrtimer.c:866 hrtimer_start_range_ns+0x7af/0xa80 kernel/time/hrtimer.c:1299 hrtimer_start_expires include/linux/hrtimer.h:432 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1965 [inline] do_nanosleep+0x131/0x690 kernel/time/hrtimer.c:2041 hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:2097 common_nsleep+0xa2/0xc0 kernel/time/posix-timers.c:1236 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1276 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1254 [inline] __x64_sys_clock_nanosleep+0x2f4/0x430 kernel/time/posix-timers.c:1254 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+0x63/0xcd RIP: 0033:0x7fcc430ae0f1 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:00007ffc4ba6bb90 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 00000000000005a5 RCX: 00007fcc430ae0f1 RDX: 00007ffc4ba6bbd0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffc4ba6bc5c R08: 0000000000000000 R09: 00007ffc4baa8080 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 00000000000a8fa2 R14: 0000000000000000 R15: 00007ffc4ba6bcc0