watchdog: BUG: soft lockup - CPU#0 stuck for 134s! [syz-executor.4:11686] Modules linked in: irq event stamp: 25236281 hardirqs last enabled at (25236280): [] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:657 hardirqs last disabled at (25236281): [] sysvec_apic_timer_interrupt+0xc/0x100 arch/x86/kernel/apic/apic.c:1091 softirqs last enabled at (14704846): [] asm_call_irq_on_stack+0xf/0x20 softirqs last disabled at (14704849): [] asm_call_irq_on_stack+0xf/0x20 CPU: 0 PID: 11686 Comm: syz-executor.4 Not tainted 5.10.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x50 kernel/locking/spinlock.c:191 Code: f8 5d c3 66 90 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 fa 7a 6e f8 48 89 ef e8 82 2f 6f f8 f6 c7 02 75 1a 53 9d 01 00 00 00 e8 81 9b 63 f8 65 8b 05 8a 35 1a 77 85 c0 74 0a 5b RSP: 0018:ffffc90000007e10 EFLAGS: 00000286 RAX: 0000000001811194 RBX: 0000000000000286 RCX: ffffffff8155b947 RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000000 RBP: ffff8880b9e26900 R08: 0000000000000001 R09: ffffffff8ebad677 R10: fffffbfff1d75ace R11: 0000000000000001 R12: ffff8880b9e26900 R13: ffff8880b9e26b80 R14: ffffffff850f3680 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000016a5374 CR3: 000000000b08e000 CR4: 0000000000350ef0 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1515 [inline] __hrtimer_run_queues+0x5c0/0xea0 kernel/time/hrtimer.c:1583 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1600 __do_softirq+0x2a0/0x9f6 kernel/softirq.c:298 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x132/0x200 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x9/0x60 kernel/kcov.c:197 Code: 8b 48 89 54 24 08 48 89 34 24 e8 72 a7 5e 02 48 8b 54 24 08 48 8b 34 24 e9 a1 fd ff ff 0f 1f 40 00 65 48 8b 14 25 00 f0 01 00 <65> 8b 05 20 db 91 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 RSP: 0018:ffffc900022af790 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000007 RCX: ffffffff81a15848 RDX: ffff8880209b8000 RSI: ffff8880209b8000 RDI: 0000000000000005 RBP: ffffea0000aef040 R08: 0000000000000000 R09: ffffea0000aef073 R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0000aef070 R13: ffff888024f166a0 R14: dffffc0000000000 R15: 00000000004d5000 __tlb_remove_page include/asm-generic/tlb.h:438 [inline] zap_pte_range mm/memory.c:1256 [inline] zap_pmd_range mm/memory.c:1357 [inline] zap_pud_range mm/memory.c:1386 [inline] zap_p4d_range mm/memory.c:1407 [inline] unmap_page_range+0xe95/0x2640 mm/memory.c:1428 unmap_single_vma+0x198/0x300 mm/memory.c:1473 unmap_vmas+0x168/0x2e0 mm/memory.c:1505 exit_mmap+0x2b1/0x530 mm/mmap.c:3222 __mmput+0x122/0x470 kernel/fork.c:1079 mmput+0x53/0x60 kernel/fork.c:1100 exit_mm kernel/exit.c:486 [inline] do_exit+0xa72/0x29b0 kernel/exit.c:796 do_group_exit+0x125/0x310 kernel/exit.c:906 get_signal+0x42a/0x1f10 kernel/signal.c:2758 arch_do_signal+0x82/0x2390 arch/x86/kernel/signal.c:811 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0x100/0x1a0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x260 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45deb9 Code: Unable to access opcode bytes at RIP 0x45de8f. RSP: 002b:00007ff6884e6cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000118c078 RCX: 000000000045deb9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000118c07c RBP: 000000000118c070 R08: 000000000000000e R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118c07c R13: 00007ffcafaff40f R14: 00007ff6884e79c0 R15: 000000000118c07c Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x1c9/0x250 drivers/acpi/processor_idle.c:517