[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.882432] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 24.088220] random: sshd: uninitialized urandom read (32 bytes read) [ 24.405905] random: sshd: uninitialized urandom read (32 bytes read) [ 24.952433] random: sshd: uninitialized urandom read (32 bytes read) [ 25.132741] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.16' (ECDSA) to the list of known hosts. [ 30.808165] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 30.908310] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details. [ 30.929175] kasan: CONFIG_KASAN_INLINE enabled [ 30.935097] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.942461] general protection fault: 0000 [#1] SMP KASAN [ 30.947978] CPU: 1 PID: 4306 Comm: syz-executor458 Not tainted 4.19.0-rc2-next-20180904+ #55 [ 30.956529] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.966092] RIP: 0010:__schedule+0xf48/0x1df0 [ 30.970628] Code: 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 0f 85 94 09 00 00 4d 8b 6d 00 4d 85 ed 0f 84 84 f7 ff ff 49 8d 7d 10 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 a6 e8 bc 84 e6 fa eb 9f 4c 89 e6 48 89 df e8 3f [ 30.989518] RSP: 0018:ffff8801cb35ea30 EFLAGS: 00010806 [ 30.994861] RAX: 1bd5a00000000022 RBX: ffff8801cb188640 RCX: 1ffff1003950088f [ 31.002131] RDX: 0000000040000000 RSI: 0000000000000000 RDI: dead000000000110 [ 31.009384] RBP: ffff8801cb35ec00 R08: ffff8801cb188640 R09: fffff520003d3047 [ 31.016646] R10: fffff520003d3047 R11: ffffc90001e9823b R12: ffff8801cf334180 [ 31.023919] R13: dead000000000100 R14: dffffc0000000000 R15: ffff8801db12cc80 [ 31.031169] FS: 0000000001d8b880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 31.039384] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.045322] CR2: 000000000043ed2e CR3: 000000000806a000 CR4: 00000000001426e0 [ 31.052581] Call Trace: [ 31.055157] ? __sched_text_start+0x8/0x8 [ 31.059334] ? generic_exec_single+0x1ea/0x5e0 [ 31.063907] ? __lock_is_held+0xb5/0x140 [ 31.068091] ? check_same_owner+0x340/0x340 [ 31.072403] ? check_same_owner+0x340/0x340 [ 31.076717] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.082241] ? rcu_note_context_switch+0x680/0x680 [ 31.087155] ? add_nops+0x90/0x90 [ 31.090609] ? arch_jump_label_transform+0x1b/0x40 [ 31.095524] preempt_schedule_common+0x22/0x60 [ 31.100095] _cond_resched+0x1d/0x30 [ 31.103787] __mutex_lock+0x13d/0x1700 [ 31.107655] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.113174] ? fill_pte+0xd6/0x420 [ 31.116695] ? arch_jump_label_transform+0x1b/0x40 [ 31.121618] ? find_next_and_bit+0x165/0x1d0 [ 31.126012] ? mutex_trylock+0x2b0/0x2b0 [ 31.130059] ? find_held_lock+0x36/0x1c0 [ 31.134104] ? lock_downgrade+0x8f0/0x8f0 [ 31.138299] ? trace_hardirqs_on+0xbd/0x2c0 [ 31.142681] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 31.147771] ? text_poke_bp+0x14e/0x1de [ 31.151727] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 31.156818] ? wait_lapic_expire+0xa0/0x850 [ 31.161122] ? wait_lapic_expire+0xa1/0x850 [ 31.165450] ? kasan_check_write+0x14/0x20 [ 31.169664] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 31.174574] ? wait_for_completion+0x8d0/0x8d0 [ 31.179136] ? wait_lapic_expire+0xa0/0x850 [ 31.183437] ? __jump_label_transform.isra.0+0x478/0x8f0 [ 31.188863] ? modules_open+0xa0/0xa0 [ 31.192646] ? kvm_vm_release+0x42/0x50 [ 31.196598] ? get_trap_addr+0x1d0/0x1d0 [ 31.200640] ? do_group_exit+0x177/0x440 [ 31.204683] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.210201] ? jump_label_type+0x132/0x1d0 [ 31.214424] mutex_lock_nested+0x16/0x20 [ 31.218465] ? mutex_lock_nested+0x16/0x20 [ 31.222683] arch_jump_label_transform+0x1b/0x40 [ 31.227429] __jump_label_update+0x16e/0x1a0 [ 31.231820] jump_label_update+0x151/0x2e0 [ 31.236038] __static_key_slow_dec_cpuslocked+0xb8/0x210 [ 31.241470] ? static_key_disable+0x30/0x30 [ 31.245775] ? rcu_read_lock_sched_held+0x108/0x120 [ 31.250916] static_key_slow_dec+0x63/0xa0 [ 31.255136] kvm_arch_vcpu_uninit+0x18e/0x1d0 [ 31.259615] kvm_vcpu_uninit+0x44/0x90 [ 31.263485] vmx_free_vcpu+0x23a/0x300 [ 31.267355] kvm_arch_destroy_vm+0x365/0x7c0 [ 31.271746] ? check_memory_region+0x1a3/0x1b0 [ 31.276308] ? kvm_arch_sync_events+0x30/0x30 [ 31.280786] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 31.286306] ? mmu_notifier_unregister+0x474/0x600 [ 31.291226] ? trace_hardirqs_on+0x2c0/0x2c0 [ 31.295618] ? kfree+0x111/0x210 [ 31.298981] ? __mmu_notifier_register+0x30/0x30 [ 31.303769] ? __free_pages+0x10a/0x190 [ 31.307721] ? free_unref_page+0x930/0x930 [ 31.311944] kvm_put_kvm+0x73f/0x1060 [ 31.315728] ? kvm_write_guest_cached+0x40/0x40 [ 31.320383] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.324870] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.329443] ? kasan_check_write+0x14/0x20 [ 31.333666] ? do_raw_spin_lock+0xc1/0x200 [ 31.337884] ? kvm_irqfd_release+0xdd/0x120 [ 31.342188] ? kvm_irqfd_release+0xdd/0x120 [ 31.346490] kvm_vm_release+0x42/0x50 [ 31.350272] __fput+0x3c1/0xa80 [ 31.353580] ? kvm_put_kvm+0x1060/0x1060 [ 31.357631] ? __alloc_file+0x400/0x400 [ 31.361592] ? check_same_owner+0x340/0x340 [ 31.365892] ? kasan_check_write+0x14/0x20 [ 31.370106] ? do_raw_spin_lock+0xc1/0x200 [ 31.374324] ____fput+0x15/0x20 [ 31.377586] task_work_run+0x1e8/0x2a0 [ 31.381452] ? task_work_cancel+0x240/0x240 [ 31.385758] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 31.391336] ? switch_task_namespaces+0xa2/0xd0 [ 31.395992] do_exit+0x1ae4/0x26e0 [ 31.399514] ? mm_update_next_owner+0x9a0/0x9a0 [ 31.404166] ? kvm_vcpu_ioctl+0x2b5/0x1280 [ 31.408393] ? rcu_read_lock_sched_held+0x108/0x120 [ 31.413393] ? kfree+0x1d7/0x210 [ 31.416748] ? kvm_vcpu_ioctl+0x2ba/0x1280 [ 31.420972] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 31.426667] ? is_bpf_text_address+0xd7/0x170 [ 31.431143] ? kernel_text_address+0x79/0xf0 [ 31.435545] ? __kernel_text_address+0xd/0x40 [ 31.440022] ? unwind_get_return_address+0x61/0xa0 [ 31.444931] ? __save_stack_trace+0x8d/0xf0 [ 31.449337] ? save_stack+0xa9/0xd0 [ 31.452948] ? save_stack+0x43/0xd0 [ 31.456555] ? __kasan_slab_free+0x11a/0x170 [ 31.460943] ? kasan_slab_free+0xe/0x10 [ 31.464897] ? putname+0xf2/0x130 [ 31.468376] ? __x64_sys_openat+0x9d/0x100 [ 31.472603] ? do_syscall_64+0x1b9/0x820 [ 31.476647] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 31.481993] ? trace_hardirqs_off+0xb8/0x2b0 [ 31.486389] ? kasan_check_read+0x11/0x20 [ 31.490529] ? do_raw_spin_unlock+0xa7/0x2f0 [ 31.494921] ? trace_hardirqs_on+0x2c0/0x2c0 [ 31.499313] ? initcall_blacklisted+0x9a/0x1e0 [ 31.503880] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 31.508971] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 31.514665] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.520182] ? do_vfs_ioctl+0x201/0x1720 [ 31.524223] ? rcu_is_watching+0x8c/0x150 [ 31.528349] ? trace_hardirqs_on+0xbd/0x2c0 [ 31.532651] ? ioctl_preallocate+0x300/0x300 [ 31.537041] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.542609] ? __fget_light+0x2f7/0x440 [ 31.546571] ? fget_raw+0x20/0x20 [ 31.550009] ? putname+0xf2/0x130 [ 31.553492] ? rcu_read_lock_sched_held+0x108/0x120 [ 31.558508] ? kmem_cache_free+0x246/0x280 [ 31.562730] ? putname+0xf7/0x130 [ 31.566168] do_group_exit+0x177/0x440 [ 31.570036] ? trace_hardirqs_on+0xbd/0x2c0 [ 31.574340] ? __ia32_sys_exit+0x50/0x50 [ 31.578380] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 31.583512] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.589035] ? ksys_ioctl+0x81/0xd0 [ 31.592706] __x64_sys_exit_group+0x3e/0x50 [ 31.597018] do_syscall_64+0x1b9/0x820 [ 31.600888] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 31.606232] ? syscall_return_slowpath+0x5e0/0x5e0 [ 31.611139] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.615962] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 31.621277] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 31.626287] ? prepare_exit_to_usermode+0x291/0x3b0 [ 31.631291] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.636207] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 31.641374] RIP: 0033:0x43ed58 [ 31.644551] Code: Bad RIP value. [ 31.647900] RSP: 002b:00007fff0f8b2ff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 31.655593] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed58 [ 31.662848] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 31.670103] RBP: 00000000004be608 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 31.677360] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000000001 [ 31.684608] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 31.691864] Modules linked in: [ 31.695043] Dumping ftrace buffer: [ 31.698562] (ftrace buffer empty) [ 31.702257] [ 31.702261] ====================================================== [ 31.702264] WARNING: possible circular locking dependency detected [ 31.702266] 4.19.0-rc2-next-20180904+ #55 Not tainted [ 31.702269] ------------------------------------------------------ [ 31.702272] syz-executor458/4306 is trying to acquire lock: [ 31.702274] 0000000037c5f8d6 ((console_sem).lock){-...}, at: down_trylock+0x13/0x70 [ 31.702282] [ 31.702284] but task is already holding lock: [ 31.702286] 000000000ff50586 (&rq->lock){-.-.}, at: __schedule+0x24d/0x1df0 [ 31.702293] [ 31.702296] which lock already depends on the new lock. [ 31.702297] [ 31.702298] [ 31.702301] the existing dependency chain (in reverse order) is: [ 31.702302] [ 31.702303] -> #2 (&rq->lock){-.-.}: [ 31.702311] _raw_spin_lock+0x2a/0x40 [ 31.702313] task_fork_fair+0x93/0x680 [ 31.702315] sched_fork+0x44b/0xbd0 [ 31.702317] copy_process+0x235e/0x7af0 [ 31.702319] _do_fork+0x1ca/0x1170 [ 31.702322] kernel_thread+0x34/0x40 [ 31.702324] rest_init+0x22/0xe4 [ 31.702326] start_kernel+0x913/0x94e [ 31.702328] x86_64_start_reservations+0x29/0x2b [ 31.702331] x86_64_start_kernel+0x76/0x79 [ 31.702333] secondary_startup_64+0xa4/0xb0 [ 31.702334] [ 31.702335] -> #1 (&p->pi_lock){-.-.}: [ 31.702343] _raw_spin_lock_irqsave+0x96/0xc0 [ 31.702345] try_to_wake_up+0xd2/0x1250 [ 31.702347] wake_up_process+0x10/0x20 [ 31.702350] __up.isra.1+0x1c0/0x2a0 [ 31.702351] up+0x13c/0x1c0 [ 31.702354] __up_console_sem+0xbe/0x1b0 [ 31.702356] console_unlock+0x506/0x10d0 [ 31.702358] vprintk_emit+0x33a/0x910 [ 31.702360] vprintk_default+0x28/0x30 [ 31.702362] vprintk_func+0x7a/0x117 [ 31.702364] printk+0xa7/0xcf [ 31.702366] load_umh+0x51/0xbd [ 31.702368] do_one_initcall+0x127/0x838 [ 31.702371] kernel_init_freeable+0x4bb/0x5ae [ 31.702373] kernel_init+0x11/0x1b3 [ 31.702375] ret_from_fork+0x3a/0x50 [ 31.702376] [ 31.702377] -> #0 ((console_sem).lock){-...}: [ 31.702385] lock_acquire+0x1e4/0x4f0 [ 31.702387] _raw_spin_lock_irqsave+0x96/0xc0 [ 31.702389] down_trylock+0x13/0x70 [ 31.702392] __down_trylock_console_sem+0xae/0x200 [ 31.702394] console_trylock+0x15/0xa0 [ 31.702396] vprintk_emit+0x31f/0x910 [ 31.702398] vprintk_default+0x28/0x30 [ 31.702400] vprintk_func+0x7a/0x117 [ 31.702402] printk+0xa7/0xcf [ 31.702405] kasan_die_handler.cold.22+0x11/0x30 [ 31.702407] notifier_call_chain+0x180/0x390 [ 31.702416] atomic_notifier_call_chain+0x98/0x190 [ 31.702418] notify_die+0x1be/0x2e0 [ 31.702420] do_general_protection+0x248/0x2f0 [ 31.702423] general_protection+0x1e/0x30 [ 31.702425] __schedule+0xf48/0x1df0 [ 31.702427] preempt_schedule_common+0x22/0x60 [ 31.702429] _cond_resched+0x1d/0x30 [ 31.702431] __mutex_lock+0x13d/0x1700 [ 31.702433] mutex_lock_nested+0x16/0x20 [ 31.702436] arch_jump_label_transform+0x1b/0x40 [ 31.702438] __jump_label_update+0x16e/0x1a0 [ 31.702441] jump_label_update+0x151/0x2e0 [ 31.702443] __static_key_slow_dec_cpuslocked+0xb8/0x210 [ 31.702446] static_key_slow_dec+0x63/0xa0 [ 31.702448] kvm_arch_vcpu_uninit+0x18e/0x1d0 [ 31.702450] kvm_vcpu_uninit+0x44/0x90 [ 31.702452] vmx_free_vcpu+0x23a/0x300 [ 31.702454] kvm_arch_destroy_vm+0x365/0x7c0 [ 31.702457] kvm_put_kvm+0x73f/0x1060 [ 31.702459] kvm_vm_release+0x42/0x50 [ 31.702461] __fput+0x3c1/0xa80 [ 31.702463] ____fput+0x15/0x20 [ 31.702465] task_work_run+0x1e8/0x2a0 [ 31.702467] do_exit+0x1ae4/0x26e0 [ 31.702469] do_group_exit+0x177/0x440 [ 31.702471] __x64_sys_exit_group+0x3e/0x50 [ 31.702473] do_syscall_64+0x1b9/0x820 [ 31.702476] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 31.702477] [ 31.702480] other info that might help us debug this: [ 31.702481] [ 31.702483] Chain exists of: [ 31.702484] (console_sem).lock --> &p->pi_lock --> &rq->lock [ 31.702493] [ 31.702496] Possible unsafe locking scenario: [ 31.702497] [ 31.702499] CPU0 CPU1 [ 31.702501] ---- ---- [ 31.702503] lock(&rq->lock); [ 31.702508] lock(&p->pi_lock); [ 31.702513] lock(&rq->lock); [ 31.702517] lock((console_sem).lock); [ 31.702521] [ 31.702523] *** DEADLOCK *** [ 31.702524] [ 31.702526] 4 locks held by syz-executor458/4306: [ 31.702527] #0: 000000001d0c9650 (cpu_hotplug_lock.rw_sem){++++}, at: static_key_slow_dec+0x57/0xa0 [ 31.702537] #1: 0000000032259c7c (jump_label_mutex){+.+.}, at: __static_key_slow_dec_cpuslocked+0x82/0x210 [ 31.702547] #2: 000000000ff50586 (&rq->lock){-.-.}, at: __schedule+0x24d/0x1df0 [ 31.702556] #3: 0000000062563bcc (rcu_read_lock){....}, at: atomic_notifier_call_chain+0x0/0x190 [ 31.702565] [ 31.702567] stack backtrace: [ 31.702571] CPU: 1 PID: 4306 Comm: syz-executor458 Not tainted 4.19.0-rc2-next-20180904+ #55 [ 31.702575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.702577] Call Trace: [ 31.702579] dump_stack+0x1c9/0x2b4 [ 31.702581] ? dump_stack_print_info.cold.2+0x52/0x52 [ 31.702583] ? vprintk_func+0x100/0x117 [ 31.702586] print_circular_bug.isra.34.cold.55+0x1bd/0x27d [ 31.702588] ? save_trace+0xe0/0x290 [ 31.702590] __lock_acquire+0x3449/0x5020 [ 31.702592] ? mark_held_locks+0x160/0x160 [ 31.702595] ? mark_held_locks+0x160/0x160 [ 31.702597] ? update_load_avg+0x389/0x27d0 [ 31.702600] ? __update_load_avg_blocked_se+0x730/0x730 [ 31.702602] ? attach_entity_load_avg+0x860/0x860 [ 31.702604] ? attach_entity_load_avg+0x860/0x860 [ 31.702607] ? graph_lock+0x170/0x170 [ 31.702609] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 31.702611] lock_acquire+0x1e4/0x4f0 [ 31.702613] ? down_trylock+0x13/0x70 [ 31.702615] ? lock_release+0x9f0/0x9f0 [ 31.702618] ? trace_hardirqs_off+0xb8/0x2b0 [ 31.702620] ? trace_hardirqs_on+0x2c0/0x2c0 [ 31.702622] ? trace_hardirqs_off+0xb8/0x2b0 [ 31.702624] ? log_store+0x34f/0x4c0 [ 31.702626] ? vprintk_emit+0x31f/0x910 [ 31.702629] _raw_spin_lock_irqsave+0x96/0xc0 [ 31.702631] ? down_trylock+0x13/0x70 [ 31.702633] down_trylock+0x13/0x70 [ 31.702635] __down_trylock_console_sem+0xae/0x200 [ 31.702637] console_trylock+0x15/0xa0 [ 31.702639] vprintk_emit+0x31f/0x910 [ 31.702642] ? wake_up_klogd+0x110/0x110 [ 31.702644] ? __lock_acquire+0x7fc/0x5020 [ 31.702646] ? mark_held_locks+0x160/0x160 [ 31.702648] vprintk_default+0x28/0x30 [ 31.702650] vprintk_func+0x7a/0x117 [ 31.702652] printk+0xa7/0xcf [ 31.702654] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 31.702657] ? kasan_die_handler.cold.22+0x5/0x30 [ 31.702659] ? kasan_die_handler+0x1a/0x31 [ 31.702661] kasan_die_handler.cold.22+0x11/0x30 [ 31.702664] notifier_call_chain+0x180/0x390 [ 31.702666] ? unregister_die_notifier+0x20/0x20 [ 31.702668] ? rcu_is_watching+0x8c/0x150 [ 31.702671] ? rcu_cleanup_dead_rnp+0x200/0x200 [ 31.702673] ? rcu_cleanup_dead_rnp+0x200/0x200 [ 31.702675] ? cmp_ex_search+0x8c/0xb0 [ 31.702678] atomic_notifier_call_chain+0x98/0x190 [ 31.702680] notify_die+0x1be/0x2e0 [ 31.702682] ? __atomic_notifier_call_chain+0x1a0/0x1a0 [ 31.702685] ? search_module_extables+0x18/0xc0 [ 31.702687] ? __schedule+0xf48/0x1df0 [ 31.702689] ? __schedule+0xf48/0x1df0 [ 31.702691] ? search_exception_tables+0x47/0x50 [ 31.702693] do_general_protection+0x248/0x2f0 [ 31.702696] general_protection+0x1e/0x30 [ 31.702698] RIP: 0010:__schedule+0xf48/0x1df0 [ 31.702706] Code: 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 0f 85 94 09 00 00 4d 8b 6d 00 4d 85 ed 0f 84 84 f7 ff ff 49 8d 7d 10 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 a6 e8 bc 84 e6 fa eb 9f 4c 89 e6 48 89 df e8 3f [ 31.702708] RSP: 0018:ffff8801cb35ea30 EFLAGS: 00010806 [ 31.702713] RAX: 1bd5a00000000022 RBX: ffff8801cb188640 RCX: 1ffff1003950088f [ 31.702716] RDX: 0000000040000000 RSI: 0000000000000000 RDI: dead000000000110 [ 31.702720] RBP: ffff8801cb35ec00 R08: ffff8801cb188640 R09: fffff520003d3047 [ 31.702723] R10: fffff520003d3047 R11: ffffc90001e9823b R12: ffff8801cf334180 [ 31.702726] R13: dead000000000100 R14: dffffc0000000000 R15: ffff8801db12cc80 [ 31.702728] ? __sched_text_start+0x8/0x8 [ 31.702731] ? generic_exec_single+0x1ea/0x5e0 [ 31.702733] ? __lock_is_held+0xb5/0x140 [ 31.702735] ? check_same_owner+0x340/0x340 [ 31.702738] ? check_same_owner+0x340/0x340 [ 31.702740] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.702747] ? rcu_note_context_switch+0x680/0x680 [ 31.702749] ? add_nops+0x90/0x90 [ 31.702752] ? arch_jump_label_transform+0x1b/0x40 [ 31.702754] preempt_schedule_common+0x22/0x60 [ 31.702756] _cond_resched+0x1d/0x30 [ 31.702758] __mutex_lock+0x13d/0x1700 [ 31.702761] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.702763] ? fill_pte+0xd6/0x420 [ 31.702766] ? arch_jump_label_transform+0x1b/0x40 [ 31.702768] ? find_next_and_bit+0x165/0x1d0 [ 31.702770] ? mutex_trylock+0x2b0/0x2b0 [ 31.702772] ? find_held_lock+0x36/0x1c0 [ 31.702774] ? lock_downgrade+0x8f0/0x8f0 [ 31.702777] ? trace_hardirqs_on+0xbd/0x2c0 [ 31.702779] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 31.702781] ? text_poke_bp+0x14e/0x1de [ 31.702784] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 31.702786] ? wait_lapic_expire+0xa0/0x850 [ 31.702788] ? wait_lapic_expire+0xa1/0x850 [ 31.702790] ? kasan_check_write+0x14/0x20 [ 31.702793] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 31.702795] ? wait_for_completion+0x8d0/0x8d0 [ 31.702798] ? wait_lapic_expire+0xa0/0x850 [ 31.702800] ? __jump_label_transform.isra.0+0x478/0x8f0 [ 31.702802] ? modules_open+0xa0/0xa0 [ 31.702804] ? kvm_vm_release+0x42/0x50 [ 31.702807] ? get_trap_addr+0x1d0/0x1d0 [ 31.702809] ? do_group_exit+0x177/0x440 [ 31.702811] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.702814] ? jump_label_type+0x132/0x1d0 [ 31.702816] mutex_lock_nested+0x16/0x20 [ 31.702818] ? mutex_lock_nested+0x16/0x20 [ 31.702820] arch_jump_label_transform+0x1b/0x40 [ 31.702823] __jump_label_update+0x16e/0x1a0 [ 31.702825] jump_label_update+0x151/0x2e0 [ 31.702828] __static_key_slow_dec_cpuslocked+0xb8/0x210 [ 31.702830] ? static_key_disable+0x30/0x30 [ 31.702832] ? rcu_read_lock_sched_held+0x108/0x120 [ 31.702835] static_key_slow_dec+0x63/0xa0 [ 31.702837] kvm_arch_vcpu_uninit+0x18e/0x1d0 [ 31.702839] kvm_vcpu_uninit+0x44/0x90 [ 31.702841] vmx_free_vcpu+0x23a/0x300 [ 31.702843] kvm_arch_destroy_vm+0x365/0x7c0 [ 31.702845] ? check_memory_region+0x1a [ 31.702850] Lost 92 message(s)! [ 32.726519] ---[ end trace 2522c7994c00aae2 ]--- [ 32.731283] RIP: 0010:__schedule+0xf48/0x1df0 [ 32.735791] Code: 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 0f 85 94 09 00 00 4d 8b 6d 00 4d 85 ed 0f 84 84 f7 ff ff 49 8d 7d 10 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 a6 e8 bc 84 e6 fa eb 9f 4c 89 e6 48 89 df e8 3f [ 32.754697] RSP: 0018:ffff8801cb35ea30 EFLAGS: 00010806 [ 32.760065] RAX: 1bd5a00000000022 RBX: ffff8801cb188640 RCX: 1ffff1003950088f [ 32.767338] RDX: 0000000040000000 RSI: 0000000000000000 RDI: dead000000000110 [ 32.774609] RBP: ffff8801cb35ec00 R08: ffff8801cb188640 R09: fffff520003d3047 [ 32.781885] R10: fffff520003d3047 R11: ffffc90001e9823b R12: ffff8801cf334180 [ 32.789159] R13: dead000000000100 R14: dffffc0000000000 R15: ffff8801db12cc80 [ 32.796455] FS: 0000000001d8b880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 32.804692] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.810580] CR2: 000000000043ed2e CR3: 000000000806a000 CR4: 00000000001426e0 [ 32.817860] Kernel panic - not syncing: Fatal exception [ 33.918763] Shutting down cpus with NMI [ 33.923097] Dumping ftrace buffer: [ 33.926626] (ftrace buffer empty) [ 33.930318] Kernel Offset: disabled [ 33.933928] Rebooting in 86400 seconds..