watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor7:11981] Modules linked in: irq event stamp: 244126 hardirqs last enabled at (244125): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (244126): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (111266): [] __do_softirq+0x74d/0xa74 kernel/softirq.c:318 softirqs last disabled at (111223): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (111223): [] irq_exit+0x1d6/0x210 kernel/softirq.c:412 CPU: 1 PID: 11981 Comm: syz-executor7 Not tainted 4.18.0+ #209 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x20/0x50 kernel/kcov.c:101 Code: 4c d8 20 4c 89 08 5d c3 66 90 55 65 48 8b 04 25 40 ee 01 00 65 8b 15 9f 2f 85 7e 48 89 e5 81 e2 00 01 1f 00 48 8b 75 08 75 2b <8b> 90 88 12 00 00 83 fa 02 75 20 48 8b 88 90 12 00 00 8b 80 8c 12 RSP: 0018:ffff8801d9f7eef0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff88019853a5c0 RBX: ffff8801d9f7ef78 RCX: ffffffff8170845c RDX: 0000000000000000 RSI: ffffffff8170840b RDI: 0000000000000005 RBP: ffff8801d9f7eef0 R08: ffff88019853a5c0 R09: ffffed003b605b90 R10: ffffed003b605b90 R11: ffff8801db02dc87 R12: ffffed003b3efdfc R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 00000000014b8940(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc8e0fb490 CR3: 00000001c3483000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rep_nop arch/x86/include/asm/processor.h:663 [inline] cpu_relax arch/x86/include/asm/processor.h:668 [inline] csd_lock_wait kernel/smp.c:108 [inline] smp_call_function_single+0x3eb/0x5c0 kernel/smp.c:302 smp_call_function_many+0x884/0xa40 kernel/smp.c:434 smp_call_function kernel/smp.c:492 [inline] on_each_cpu+0x46/0x1d0 kernel/smp.c:604 text_poke_bp+0xc0/0x16a arch/x86/kernel/alternative.c:803 __jump_label_transform.isra.0+0x478/0x8f0 arch/x86/kernel/jump_label.c:105 arch_jump_label_transform+0x2f/0x40 arch/x86/kernel/jump_label.c:113 __jump_label_update+0x16e/0x1a0 kernel/jump_label.c:375 jump_label_update+0x151/0x2e0 kernel/jump_label.c:760 __static_key_slow_dec_cpuslocked+0xb8/0x210 kernel/jump_label.c:205 __static_key_slow_dec kernel/jump_label.c:215 [inline] static_key_slow_dec+0x63/0xa0 kernel/jump_label.c:229 tracepoint_remove_func kernel/tracepoint.c:298 [inline] tracepoint_probe_unregister+0x764/0x940 kernel/tracepoint.c:368 trace_event_reg+0x10c/0x350 kernel/trace/trace_events.c:310 perf_trace_event_unreg.isra.3+0xbb/0x220 kernel/trace/trace_event_perf.c:157 perf_trace_destroy+0xc1/0x100 kernel/trace/trace_event_perf.c:238 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:8329 _free_event+0x414/0x15e0 kernel/events/core.c:4445 put_event+0x48/0x60 kernel/events/core.c:4531 perf_event_release_kernel+0x8d1/0xfc0 kernel/events/core.c:4637 perf_release+0x37/0x50 kernel/events/core.c:4647 __fput+0x36e/0x8c0 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x410c41 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:0000000000a3fdc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000410c41 RDX: 0000000000000000 RSI: 0000000000731190 RDI: 0000000000000006 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffffffffffff R10: 00000000009300a0 R11: 0000000000000293 R12: 0000000000000006 R13: 000000000003d52b R14: 00000000000000cc R15: badc0ffeebadface Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 11980 Comm: syz-executor3 Not tainted 4.18.0+ #209 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvm_arch_vcpu_put+0x1cc/0x420 arch/x86/kvm/x86.c:3180 Code: 89 e6 e8 e7 e8 6d 00 4d 85 e4 0f 85 4c 01 00 00 e8 a9 e7 6d 00 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 04 02 00 00 48 8b 3b 4c 8d a7 a8 9d 00 00 4c 8d b7 e0 97 00 RSP: 0018:ffff8801c5c6f128 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffff8801af440140 RCX: ffffffff810ed669 RDX: 1ffff10035e88028 RSI: ffffffff810ed677 RDI: 0000000000000007 RBP: ffff8801c5c6f158 R08: ffff88018ae26580 R09: 0000000000000003 R10: ffff88018ae26e38 R11: bd597c24f562acfa R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8801db02cc40 FS: 00007f6c633f2700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33a23000 CR3: 00000001b5273000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvm_sched_out+0x91/0xb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3985 __fire_sched_out_preempt_notifiers kernel/sched/core.c:2497 [inline] fire_sched_out_preempt_notifiers kernel/sched/core.c:2505 [inline] prepare_task_switch kernel/sched/core.c:2611 [inline] context_switch kernel/sched/core.c:2790 [inline] __schedule+0xf1e/0x1df0 kernel/sched/core.c:3473 preempt_schedule_common+0x22/0x60 kernel/sched/core.c:3597 _cond_resched+0x1d/0x30 kernel/sched/core.c:4963 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc+0x292/0x710 mm/slab.c:3552 kmem_cache_zalloc include/linux/slab.h:697 [inline] mmu_topup_memory_cache arch/x86/kvm/mmu.c:917 [inline] mmu_topup_memory_caches+0x2fa/0x3a0 arch/x86/kvm/mmu.c:970 kvm_mmu_load+0x21/0x1260 arch/x86/kvm/mmu.c:4957 kvm_mmu_reload arch/x86/kvm/mmu.h:86 [inline] vcpu_enter_guest+0x3c8b/0x61a0 arch/x86/kvm/x86.c:7495 vcpu_run arch/x86/kvm/x86.c:7693 [inline] kvm_arch_vcpu_ioctl_run+0x373/0x16d0 arch/x86/kvm/x86.c:7870 kvm_vcpu_ioctl+0x7b8/0x1280 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6c633f1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6c633f26d4 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 0000000000930140 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004ceea8 R14: 00000000004c5529 R15: 0000000000000001