watchdog: BUG: soft lockup - CPU#1 stuck for 245s! [syz-executor.2:32053] CPU#1 Utilization every 22s during lockup: #1: 16% system, 2% softirq, 99% hardirq, 0% idle #2: 15% system, 2% softirq, 99% hardirq, 0% idle #3: 16% system, 2% softirq, 99% hardirq, 0% idle #4: 15% system, 2% softirq, 99% hardirq, 0% idle #5: 15% system, 2% softirq, 99% hardirq, 0% idle CPU#1 Detect HardIRQ Time exceeds 50%. Most frequent HardIRQs: #1: 9 irq#33 #2: 3 irq#25 Modules linked in: irq event stamp: 310499 hardirqs last enabled at (310498): [] irqentry_exit+0x3b/0x90 kernel/entry/common.c:357 hardirqs last disabled at (310499): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (4212): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (4212): [] handle_softirqs+0x5be/0x8f0 kernel/softirq.c:582 softirqs last disabled at (4407): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (4407): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (4407): [] __irq_exit_rcu kernel/softirq.c:637 [inline] softirqs last disabled at (4407): [] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649 CPU: 1 PID: 32053 Comm: syz-executor.2 Not tainted 6.10.0-rc1-syzkaller-00013-g2bfcfd584ff5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x60 kernel/kcov.c:207 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 f4 ba 74 7e 65 8b 05 f5 ba 74 7e a9 00 01 ff 00 48 8b 34 24 <74> 0f f6 c4 01 74 35 8b 82 1c 16 00 00 85 c0 74 2b 8b 82 f8 15 00 RSP: 0018:ffffc90000a18b78 EFLAGS: 00000206 RAX: 0000000000000102 RBX: ffff888054732b40 RCX: ffffffff88f8af9d RDX: ffff88806dc39e00 RSI: ffffffff88f8afa7 RDI: 0000000000000006 RBP: ffff88802c1c0b00 R08: 0000000000000006 R09: 000000000001c9c3 R10: 0000000000000000 R11: 0000000000000004 R12: 000000000001c9c3 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 000055559219f480(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32e35000 CR3: 000000001aeba000 CR4: 0000000000350ef0 Call Trace: pie_calculate_probability+0x457/0x850 net/sched/sch_pie.c:412 fq_pie_timer+0x215/0x5a0 net/sched/sch_fq_pie.c:398 call_timer_fn+0x1a3/0x610 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers+0x74b/0xaf0 kernel/time/timer.c:2417 __run_timer_base kernel/time/timer.c:2428 [inline] __run_timer_base kernel/time/timer.c:2421 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2437 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2447 handle_softirqs+0x219/0x8f0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 46 b4 80 f6 48 89 df e8 2e 31 81 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 45 73 72 f6 65 8b 05 d6 88 17 75 85 c0 74 16 5b RSP: 0018:ffffc90009f57c88 EFLAGS: 00000246 RAX: 0000000000000006 RBX: ffff888023abc000 RCX: 1ffffffff285daad RDX: 0000000000000000 RSI: ffffffff8b2cc020 RDI: ffffffff8b902b80 RBP: 0000000000000293 R08: 0000000000000001 R09: fffffbfff285047a R10: ffffffff942823d7 R11: 0000000000000002 R12: ffff888023abc000 R13: ffff88823bcac408 R14: 0000000000000000 R15: 000000008f6c0000 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] dummy_pullup+0x206/0x270 drivers/usb/gadget/udc/dummy_hcd.c:924 usb_gadget_disconnect_locked+0x142/0x4e0 drivers/usb/gadget/udc/core.c:779 gadget_unbind_driver+0xd7/0x4e0 drivers/usb/gadget/udc/core.c:1668 device_remove+0xcb/0x170 drivers/base/dd.c:566 __device_release_driver drivers/base/dd.c:1270 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1293 driver_detach+0xd8/0x1b0 drivers/base/dd.c:1356 bus_remove_driver+0x13b/0x2c0 drivers/base/bus.c:742 driver_unregister+0x76/0xb0 drivers/base/driver.c:274 usb_gadget_unregister_driver+0x49/0x70 drivers/usb/gadget/udc/core.c:1733 raw_release+0x1a9/0x2f0 drivers/usb/gadget/legacy/raw_gadget.c:462 __fput+0x40b/0xbb0 fs/file_table.c:422 __fput_sync+0x47/0x50 fs/file_table.c:507 __do_sys_close fs/open.c:1555 [inline] __se_sys_close fs/open.c:1540 [inline] __x64_sys_close+0x86/0x100 fs/open.c:1540 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd9be87bdda Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007ffed87ee9c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd9be87bdda RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffffffffffffffff R08: 00007fd9be800000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000293 R12: 00007fd9be9b3fa0 R13: 00007fd9be9b3fac R14: 000000000000015e R15: 00007fd9be9b59a0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:112