watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor1:20535] Modules linked in: irq event stamp: 275394 hardirqs last enabled at (275393): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (275394): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (67528): [] __do_softirq+0x74d/0xa74 kernel/softirq.c:318 softirqs last disabled at (67465): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (67465): [] irq_exit+0x1d6/0x210 kernel/softirq.c:412 CPU: 0 PID: 20535 Comm: syz-executor1 Not tainted 4.19.0-rc2-next-20180904+ #55 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:665 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:670 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x3ed/0x5c0 kernel/smp.c:302 Code: e8 03 4c 01 e8 c6 00 f8 48 89 44 24 28 e8 eb 45 0c 00 45 85 e4 74 67 48 8b 44 24 28 48 83 c3 18 49 89 c4 e8 c5 44 0c 00 f3 90 <48> 89 d8 41 c6 04 24 04 48 c1 e8 03 42 0f b6 04 28 84 c0 74 08 3c RSP: 0018:ffff880183a5eea0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8801cc050600 RBX: ffff880183a5ef18 RCX: ffffffff817091fc RDX: 0000000000000000 RSI: ffffffff817091ab RDI: 0000000000000005 RBP: ffff880183a5f000 R08: ffff8801cc050600 R09: ffffed003b625b98 R10: ffffed003b625b98 R11: ffff8801db12dcc7 R12: ffffed003074bdf0 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000001152940(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd5cb7b3a0 CR3: 0000000188151000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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+0x102/0x1de arch/x86/kernel/alternative.c:804 __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+0x3c1/0xa80 fs/file_table.c:279 ____fput+0x15/0x20 fs/file_table.c:312 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: 0033:0x410c51 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:00007ffd28f43f90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000410c51 RDX: 0000000000000000 RSI: 00000000007309d8 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffffffffffff R10: 00000000009300a0 R11: 0000000000000293 R12: 0000000000000002 R13: 000000000006e0be R14: 0000000000000171 R15: badc0ffeebadface Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 20536 Comm: syz-executor4 Not tainted 4.19.0-rc2-next-20180904+ #55 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_lockdep_rcu_enabled.part.1+0x2a/0x60 kernel/rcu/update.c:253 Code: 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 65 48 8b 1c 25 40 ee 01 00 48 8d bb 3c 08 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 10 8b 93 3c 08 00 RSP: 0018:ffff880185386780 EFLAGS: 00000803 RAX: dffffc0000000000 RBX: ffff8801c6cf0300 RCX: ffffffff810ed739 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801c6cf0b3c RBP: ffff880185386788 R08: 0000000000000000 R09: 0000000000000003 R10: ffff8801c6cf0bb8 R11: 3e1a806e7255e8d1 R12: ffff8801853868b0 R13: ffffc90001b6cda8 R14: ffffc90001b6c7e0 R15: ffff8801c6cf0300 FS: 00007f7280256700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001cf3de000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_lockdep_rcu_enabled+0x77/0x90 kernel/rcu/update.c:252 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x6e6/0x9f0 kernel/locking/lockdep.c:3919 rcu_lock_release include/linux/rcupdate.h:249 [inline] srcu_read_unlock include/linux/srcu.h:223 [inline] kvm_arch_vcpu_put+0x1fc/0x420 arch/x86/kvm/x86.c:3180 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 down_read+0x97/0x1d0 kernel/locking/rwsem.c:23 kvm_host_page_size+0x99/0x150 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1255 host_mapping_level arch/x86/kvm/mmu.c:1120 [inline] mapping_level+0x174/0x4c0 arch/x86/kvm/mmu.c:1170 tdp_page_fault+0x29a/0xc00 arch/x86/kvm/mmu.c:4054 kvm_mmu_page_fault+0x226/0x19b0 arch/x86/kvm/mmu.c:5240 handle_ept_violation+0x27c/0x660 arch/x86/kvm/vmx.c:7679 vmx_handle_exit+0x2dd/0x1760 arch/x86/kvm/vmx.c:10115 vcpu_enter_guest+0x143c/0x61a0 arch/x86/kvm/x86.c:7630 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: 0033:0x457099 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:00007f7280255c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f72802566d4 RCX: 0000000000457099 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 0000000000930140 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cf730 R14: 00000000004c59b9 R15: 0000000000000001