ptrace attach of "/root/syz-executor1"[6257] was attempted by "/root/syz-executor1"[6262] watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor1:6257] Modules linked in: irq event stamp: 28122 hardirqs last enabled at (28121): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (28122): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1420): [] __do_softirq+0x7ba/0xad8 kernel/softirq.c:318 softirqs last disabled at (1337): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (1337): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 CPU: 0 PID: 6257 Comm: syz-executor1 Not tainted 4.19.0-rc8+ #290 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+0x25a/0x660 kernel/smp.c:302 Code: e8 03 4c 01 f0 c6 00 f8 48 89 44 24 28 e8 0e 50 0c 00 45 85 e4 74 67 48 8b 44 24 28 48 83 c3 18 49 89 c4 e8 e8 4e 0c 00 f3 90 <48> 89 d8 41 c6 04 24 04 48 c1 e8 03 42 0f b6 04 30 84 c0 74 08 3c RSP: 0018:ffff880139406e80 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8801cd7c8340 RBX: ffff880139406ef8 RCX: ffffffff81725ab9 RDX: 0000000000000000 RSI: ffffffff81725a68 RDI: 0000000000000005 RBP: ffff880139406fd8 R08: ffff8801cd7c8340 R09: ffffed003b5e5ba0 R10: ffffed003b5e5ba0 R11: ffff8801daf2dd07 R12: ffffed0027280dec R13: 1ffff10027280dd8 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000002835940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000072c000 CR3: 00000001c34c7000 CR4: 00000000001426f0 Call Trace: smp_call_function_many+0x967/0xb60 kernel/smp.c:434 smp_call_function+0x42/0x80 kernel/smp.c:492 on_each_cpu+0x2f/0x1e0 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+0x174/0x320 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+0x761/0x930 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:8336 _free_event+0x414/0x1610 kernel/events/core.c:4446 put_event+0x48/0x60 kernel/events/core.c:4532 perf_event_release_kernel+0x8d4/0xfa0 kernel/events/core.c:4638 perf_release+0x37/0x50 kernel/events/core.c:4648 __fput+0x385/0xa30 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: 0033:0x411021 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:0000000000a3fd90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411021 RDX: 0000001b2fa20000 RSI: 0000000000730ea0 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000a3fcc0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001 Sending NMI from CPU 0 to CPUs 1: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.364 msecs NMI backtrace for cpu 1 CPU: 1 PID: 6254 Comm: syz-executor0 Not tainted 4.19.0-rc8+ #290 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline] RIP: 0010:arch_atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline] RIP: 0010:atomic64_read include/asm-generic/atomic-instrumented.h:28 [inline] RIP: 0010:atomic_long_read include/asm-generic/atomic-long.h:47 [inline] RIP: 0010:__mutex_owner include/linux/mutex.h:75 [inline] RIP: 0010:mutex_spin_on_owner+0x123/0x540 kernel/locking/mutex.c:529 Code: 85 d8 fe ff ff 48 c1 e9 03 4e 8d 3c 31 be 08 00 00 00 4c 89 ef e8 7d 9f 62 00 4c 89 e8 41 c6 07 00 48 c1 e8 03 42 80 3c 30 00 <0f> 85 00 03 00 00 41 80 3f 00 49 8b 45 00 0f 85 09 03 00 00 48 89 RSP: 0018:ffff88017082f088 EFLAGS: 00000246 RAX: 1ffffffff1280538 RBX: ffff88017082f198 RCX: ffffffff815f6533 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff894029c0 RBP: ffff88017082f1c0 R08: fffffbfff1280539 R09: fffffbfff1280538 R10: fffffbfff1280538 R11: ffffffff894029c7 R12: ffff8801cd7c8340 R13: ffffffff894029c0 R14: dffffc0000000000 R15: ffffed002e105e1b FS: 000000000287f940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fa25000 CR3: 00000001c04fc000 CR4: 00000000001426e0 Call Trace: mutex_optimistic_spin kernel/locking/mutex.c:646 [inline] __mutex_lock_common kernel/locking/mutex.c:928 [inline] __mutex_lock+0xa85/0x1700 kernel/locking/mutex.c:1072 mutex_lock_nested kernel/locking/mutex.c:1087 [inline] atomic_dec_and_mutex_lock+0x22e/0x2d0 kernel/locking/mutex.c:1436 __static_key_slow_dec_cpuslocked+0x82/0x210 kernel/jump_label.c:195 __static_key_slow_dec kernel/jump_label.c:215 [inline] static_key_slow_dec+0x63/0xa0 kernel/jump_label.c:229 kvm_arch_vcpu_uninit+0x18e/0x1d0 arch/x86/kvm/x86.c:8841 kvm_vcpu_uninit+0x44/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:337 vmx_free_vcpu+0x23a/0x300 arch/x86/kvm/vmx.c:10988 kvm_arch_vcpu_free arch/x86/kvm/x86.c:8457 [inline] kvm_free_vcpus arch/x86/kvm/x86.c:8909 [inline] kvm_arch_destroy_vm+0x365/0x7c0 arch/x86/kvm/x86.c:9006 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:752 [inline] kvm_put_kvm+0x6c8/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:773 kvm_vcpu_release+0x7b/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2407 __fput+0x385/0xa30 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: 0033:0x411021 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:0000000000a3fd90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 00000000007310f8 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00000000b6232fad R09: 00000000b6232fb1 R10: 0000000000a3fcc0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 00000000000001b4 R15: 0000000000000000