watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor3:10003] Modules linked in: irq event stamp: 294620 hardirqs last enabled at (294619): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (294620): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (30014): [] __do_softirq+0x74d/0xa74 kernel/softirq.c:318 softirqs last disabled at (29953): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (29953): [] irq_exit+0x1d6/0x210 kernel/softirq.c:412 CPU: 0 PID: 10003 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:rep_nop arch/x86/include/asm/processor.h:663 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:668 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x3eb/0x5c0 kernel/smp.c:302 Code: 48 c1 e8 03 4c 01 e8 c6 00 f8 48 89 44 24 28 e8 3b 3b 0c 00 45 85 e4 74 67 48 8b 44 24 28 48 83 c3 18 49 89 c4 e8 15 3a 0c 00 90 48 89 d8 41 c6 04 24 04 48 c1 e8 03 42 0f b6 04 28 84 c0 74 RSP: 0018:ffff88018644ef00 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8801b3ca0400 RBX: ffff88018644ef78 RCX: ffffffff8170845c RDX: 0000000000000000 RSI: ffffffff8170840b RDI: 0000000000000005 RBP: ffff88018644f048 R08: ffff8801b3ca0400 R09: ffffed003b625b90 R10: ffffed003b625b90 R11: ffff8801db12dc87 R12: ffffed0030c89dfc R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 000000000281c940(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe32eb0edb8 CR3: 00000001b5124000 CR4: 00000000001426f0 Call Trace: 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:00007ffde0a9cf30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000410c41 RDX: 0000000000000000 RSI: 0000000000736ee0 RDI: 0000000000000006 RBP: 0000000000000000 R08: ffffffffffffffff R09: ffffffffffffffff R10: 00007ffde0a9ce60 R11: 0000000000000293 R12: 000000000000000a R13: 000000000004729a R14: 000000000000004a R15: badc0ffeebadface Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10002 Comm: syz-executor5 Not tainted 4.18.0+ #209 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:int3+0x0/0x20 arch/x86/entry/entry_64.S:1150 Code: 00 20 00 00 e9 01 02 00 00 e8 3c 02 00 00 48 89 e7 31 f6 e8 b2 04 6a fa e9 fd 02 00 00 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 <0f> 1f 00 6a ff e8 16 02 00 00 48 89 e7 31 f6 e8 dc 00 6a fa e9 d7 RSP: 0018:ffff8801893f6e38 EFLAGS: 00000046 RAX: 0000000000000007 RBX: 1ffff1003127edd1 RCX: 0000000000000000 RDX: ffff8801af326200 RSI: 0000000000000000 RDI: ffff8801af326a3c RBP: ffff8801893f6f50 R08: 0000000000000000 R09: 0000000000000000 R10: fffff520006d5e47 R11: ffffc900036af23b R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 FS: 00007f1fb5a54700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000440fa0 CR3: 00000001c8297000 CR4: 00000000001426e0 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:244 [inline] srcu_read_lock include/linux/srcu.h:199 [inline] kvm_arch_vcpu_put+0x171/0x420 arch/x86/kvm/x86.c:3178 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 prepare_alloc_pages mm/page_alloc.c:4325 [inline] __alloc_pages_nodemask+0x496/0xd10 mm/page_alloc.c:4365 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4415 mmu_topup_memory_cache_page arch/x86/kvm/mmu.c:945 [inline] mmu_topup_memory_caches+0x1f8/0x3a0 arch/x86/kvm/mmu.c:967 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:00007f1fb5a53c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f1fb5a546d4 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004ceea8 R14: 00000000004c5529 R15: 0000000000000000