[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 23.825794] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.445538] random: sshd: uninitialized urandom read (32 bytes read) [ 25.727118] random: sshd: uninitialized urandom read (32 bytes read) [ 26.281535] random: sshd: uninitialized urandom read (32 bytes read) [ 26.453193] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.197' (ECDSA) to the list of known hosts. [ 32.037633] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 32.138743] 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. [ 32.162637] kasan: CONFIG_KASAN_INLINE enabled [ 32.169764] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 32.177139] general protection fault: 0000 [#1] SMP KASAN [ 32.182691] CPU: 1 PID: 4674 Comm: syz-executor975 Not tainted 4.19.0-rc2+ #123 [ 32.190146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.199535] RIP: 0010:__schedule+0xf48/0x1df0 [ 32.204050] 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 1c 9a e8 fa eb 9f 4c 89 e6 48 89 df e8 ef [ 32.222968] RSP: 0018:ffff8801d9a86ec8 EFLAGS: 00010806 [ 32.228359] RAX: 1bd5a00000000022 RBX: ffff8801b6352600 RCX: 1ffff1003735a88f [ 32.235649] RDX: 0000000040000000 RSI: 0000000000000000 RDI: dead000000000110 [ 32.242934] RBP: ffff8801d9a87098 R08: ffff8801b6352600 R09: fffff520003d1a47 [ 32.250217] R10: fffff520003d1a47 R11: ffffc90001e8d23b R12: ffff8801ce196380 [ 32.257507] R13: dead000000000100 R14: dffffc0000000000 R15: ffff8801db12cc80 [ 32.264795] FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 32.273036] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 32.278920] CR2: 00000000f7f23c7f CR3: 000000000806a000 CR4: 00000000001426e0 [ 32.286185] Call Trace: [ 32.288806] ? mark_free_pages+0x3b0/0x3b0 [ 32.293062] ? kvm_vm_release+0x42/0x50 [ 32.297061] ? __sched_text_start+0x8/0x8 [ 32.301228] ? find_held_lock+0x36/0x1c0 [ 32.305324] ? check_same_owner+0x340/0x340 [ 32.309684] ? __free_pages+0x10a/0x190 [ 32.313683] preempt_schedule_common+0x22/0x60 [ 32.318272] _cond_resched+0x1d/0x30 [ 32.321987] cpus_read_lock+0x22/0xa0 [ 32.325790] static_key_slow_dec+0x57/0xa0 [ 32.330028] kvm_arch_vcpu_uninit+0x18e/0x1d0 [ 32.334526] kvm_vcpu_uninit+0x44/0x90 [ 32.338411] vmx_free_vcpu+0x23a/0x300 [ 32.342329] kvm_arch_destroy_vm+0x365/0x7c0 [ 32.346741] ? check_memory_region+0x173/0x1b0 [ 32.351329] ? kvm_arch_sync_events+0x30/0x30 [ 32.355836] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.361381] ? mmu_notifier_unregister+0x474/0x600 [ 32.366318] ? trace_hardirqs_on+0x2c0/0x2c0 [ 32.370724] ? kfree+0x111/0x210 [ 32.374089] ? __mmu_notifier_register+0x30/0x30 [ 32.378853] ? __free_pages+0x10a/0x190 [ 32.382836] ? free_unref_page+0x930/0x930 [ 32.387087] kvm_put_kvm+0x73f/0x1060 [ 32.390892] ? kvm_write_guest_cached+0x40/0x40 [ 32.395565] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.400062] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.404555] ? lockdep_hardirqs_on+0x421/0x5c0 [ 32.409142] ? kasan_check_write+0x14/0x20 [ 32.413377] ? do_raw_spin_lock+0xc1/0x200 [ 32.417614] ? kvm_irqfd_release+0xdd/0x120 [ 32.421932] ? kvm_irqfd_release+0xdd/0x120 [ 32.426257] ? kvm_put_kvm+0x1060/0x1060 [ 32.430331] kvm_vm_release+0x42/0x50 [ 32.434140] __fput+0x38a/0xa40 [ 32.437420] ? __alloc_file+0x400/0x400 [ 32.441402] ? check_same_owner+0x340/0x340 [ 32.445721] ? kasan_check_write+0x14/0x20 [ 32.449956] ? do_raw_spin_lock+0xc1/0x200 [ 32.454187] ____fput+0x15/0x20 [ 32.457463] task_work_run+0x1e8/0x2a0 [ 32.461354] ? task_work_cancel+0x240/0x240 [ 32.465681] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.471217] ? switch_task_namespaces+0xa2/0xd0 [ 32.475886] do_exit+0x1ae4/0x26e0 [ 32.479426] ? check_memory_region+0x171/0x1b0 [ 32.484006] ? mm_update_next_owner+0x9a0/0x9a0 [ 32.488675] ? kvm_set_memory_region+0x50/0x50 [ 32.493261] ? wait_for_completion+0x8d0/0x8d0 [ 32.497850] ? get_unused_fd_flags+0x1a0/0x1a0 [ 32.502427] ? kfree+0x111/0x210 [ 32.505792] ? kasan_check_read+0x11/0x20 [ 32.509946] ? rcu_is_watching+0x8c/0x150 [ 32.514094] ? rcu_pm_notify+0xc0/0xc0 [ 32.517999] ? kvm_vcpu_ioctl+0x2b5/0x1280 [ 32.522246] ? rcu_read_lock_sched_held+0x108/0x120 [ 32.527288] ? kfree+0x1d7/0x210 [ 32.530668] ? kvm_vcpu_ioctl+0x2ba/0x1280 [ 32.534907] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 32.540618] ? kvm_dev_ioctl+0x18a/0x1b10 [ 32.544780] ? save_stack+0xa9/0xd0 [ 32.548408] ? save_stack+0x43/0xd0 [ 32.552044] ? __kasan_slab_free+0x11a/0x170 [ 32.556453] ? kmem_cache_free+0x86/0x280 [ 32.560599] ? putname+0xf2/0x130 [ 32.564055] ? __ia32_compat_sys_openat+0x98/0xf0 [ 32.568908] ? do_fast_syscall_32+0x34d/0xfb2 [ 32.573416] ? entry_SYSENTER_compat+0x70/0x7f [ 32.578000] ? trace_hardirqs_off+0xb8/0x2b0 [ 32.582407] ? kasan_check_read+0x11/0x20 [ 32.586553] ? do_raw_spin_unlock+0xa7/0x2f0 [ 32.590961] ? trace_hardirqs_on+0x2c0/0x2c0 [ 32.595370] ? kasan_check_write+0x14/0x20 [ 32.599605] ? trace_hardirqs_off+0xb8/0x2b0 [ 32.604017] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 32.609120] ? trace_hardirqs_on+0x2c0/0x2c0 [ 32.613557] ? kmem_cache_free+0xa0/0x280 [ 32.617711] ? kasan_check_read+0x11/0x20 [ 32.621860] ? rcu_is_watching+0x8c/0x150 [ 32.626009] ? rcu_pm_notify+0xc0/0xc0 [ 32.629899] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.635442] ? __fget_light+0x2f7/0x440 [ 32.639426] ? kvm_vcpu_compat_ioctl+0x218/0x4a0 [ 32.644183] ? kvm_vcpu_ioctl+0x1280/0x1280 [ 32.648513] do_group_exit+0x177/0x440 [ 32.652408] ? trace_hardirqs_on+0xbd/0x2c0 [ 32.656735] ? __ia32_sys_exit+0x50/0x50 [ 32.660798] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 32.665912] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.671453] ? __ia32_compat_sys_ioctl+0x184/0x640 [ 32.676391] __ia32_sys_exit_group+0x3e/0x50 [ 32.680808] do_fast_syscall_32+0x34d/0xfb2 [ 32.685141] ? do_int80_syscall_32+0x890/0x890 [ 32.689726] ? entry_SYSENTER_compat+0x68/0x7f [ 32.694317] ? trace_hardirqs_off_caller+0xbb/0x2b0 [ 32.699346] ? syscall_return_slowpath+0x5e0/0x5e0 [ 32.704274] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.709129] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.713972] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 32.718990] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 32.724016] ? prepare_exit_to_usermode+0x291/0x3b0 [ 32.729051] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.733904] entry_SYSENTER_compat+0x70/0x7f [ 32.738327] RIP: 0023:0xf7f23ca9 [ 32.741707] Code: Bad RIP value. [ 32.745072] RSP: 002b:00000000fff4ed4c EFLAGS: 00000292 ORIG_RAX: 00000000000000fc [ 32.752789] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000080eb2b8 [ 32.760062] RDX: 0000000000000000 RSI: 00000000080d5af8 RDI: 00000000080eb2c0 [ 32.767347] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 32.774627] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 32.781910] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 32.789186] Modules linked in: [ 32.792386] Dumping ftrace buffer: [ 32.795928] (ftrace buffer empty) [ 32.799637] [ 32.799642] ====================================================== [ 32.799648] WARNING: possible circular locking dependency detected [ 32.799652] 4.19.0-rc2+ #123 Not tainted [ 32.799657] ------------------------------------------------------ [ 32.799663] syz-executor975/4674 is trying to acquire lock: [ 32.799666] 00000000121e9713 ((console_sem).lock){-...}, at: down_trylock+0x13/0x70 [ 32.799681] [ 32.799685] but task is already holding lock: [ 32.799689] 0000000054957df1 (&rq->lock){-.-.}, at: __schedule+0x24d/0x1df0 [ 32.799703] [ 32.799707] which lock already depends on the new lock. [ 32.799710] [ 32.799712] [ 32.799717] the existing dependency chain (in reverse order) is: [ 32.799720] [ 32.799722] -> #2 (&rq->lock){-.-.}: [ 32.799736] _raw_spin_lock+0x2a/0x40 [ 32.799740] task_fork_fair+0x93/0x680 [ 32.799744] sched_fork+0x44b/0xbd0 [ 32.799748] copy_process+0x235e/0x7ad0 [ 32.799752] _do_fork+0x1ca/0x1170 [ 32.799756] kernel_thread+0x34/0x40 [ 32.799759] rest_init+0x22/0xe4 [ 32.799763] start_kernel+0x913/0x94e [ 32.799768] x86_64_start_reservations+0x29/0x2b [ 32.799772] x86_64_start_kernel+0x76/0x79 [ 32.799776] secondary_startup_64+0xa4/0xb0 [ 32.799778] [ 32.799780] -> #1 (&p->pi_lock){-.-.}: [ 32.799795] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.799799] try_to_wake_up+0xd2/0x1250 [ 32.799803] wake_up_process+0x10/0x20 [ 32.799807] __up.isra.1+0x1c0/0x2a0 [ 32.799810] up+0x13c/0x1c0 [ 32.799814] __up_console_sem+0xbe/0x1b0 [ 32.799818] console_unlock+0x506/0x10d0 [ 32.799829] vprintk_emit+0x33a/0x910 [ 32.799833] vprintk_default+0x28/0x30 [ 32.799836] vprintk_func+0x7a/0x117 [ 32.799840] printk+0xa7/0xcf [ 32.799843] load_umh+0x51/0xbd [ 32.799848] do_one_initcall+0x127/0x838 [ 32.799852] kernel_init_freeable+0x4bb/0x5ae [ 32.799856] kernel_init+0x11/0x1b3 [ 32.799859] ret_from_fork+0x3a/0x50 [ 32.799862] [ 32.799864] -> #0 ((console_sem).lock){-...}: [ 32.799878] lock_acquire+0x1e4/0x4f0 [ 32.799883] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.799886] down_trylock+0x13/0x70 [ 32.799891] __down_trylock_console_sem+0xae/0x200 [ 32.799895] console_trylock+0x15/0xa0 [ 32.799899] vprintk_emit+0x31f/0x910 [ 32.799903] vprintk_default+0x28/0x30 [ 32.799906] vprintk_func+0x7a/0x117 [ 32.799910] printk+0xa7/0xcf [ 32.799914] kasan_die_handler.cold.22+0x11/0x30 [ 32.799919] notifier_call_chain+0x180/0x390 [ 32.799923] atomic_notifier_call_chain+0x98/0x190 [ 32.799927] notify_die+0x1be/0x2e0 [ 32.799932] do_general_protection+0x248/0x2f0 [ 32.799936] general_protection+0x1e/0x30 [ 32.799940] __schedule+0xf48/0x1df0 [ 32.799944] preempt_schedule_common+0x22/0x60 [ 32.799948] _cond_resched+0x1d/0x30 [ 32.799952] cpus_read_lock+0x22/0xa0 [ 32.799956] static_key_slow_dec+0x57/0xa0 [ 32.799960] kvm_arch_vcpu_uninit+0x18e/0x1d0 [ 32.799964] kvm_vcpu_uninit+0x44/0x90 [ 32.799968] vmx_free_vcpu+0x23a/0x300 [ 32.799973] kvm_arch_destroy_vm+0x365/0x7c0 [ 32.799976] kvm_put_kvm+0x73f/0x1060 [ 32.799980] kvm_vm_release+0x42/0x50 [ 32.799984] __fput+0x38a/0xa40 [ 32.799987] ____fput+0x15/0x20 [ 32.799991] task_work_run+0x1e8/0x2a0 [ 32.799995] do_exit+0x1ae4/0x26e0 [ 32.799999] do_group_exit+0x177/0x440 [ 32.800003] __ia32_sys_exit_group+0x3e/0x50 [ 32.800008] do_fast_syscall_32+0x34d/0xfb2 [ 32.800012] entry_SYSENTER_compat+0x70/0x7f [ 32.800014] [ 32.800018] other info that might help us debug this: [ 32.800021] [ 32.800024] Chain exists of: [ 32.800026] (console_sem).lock --> &p->pi_lock --> &rq->lock [ 32.800044] [ 32.800048] Possible unsafe locking scenario: [ 32.800050] [ 32.800055] CPU0 CPU1 [ 32.800059] ---- ---- [ 32.800061] lock(&rq->lock); [ 32.800070] lock(&p->pi_lock); [ 32.800080] lock(&rq->lock); [ 32.800088] lock((console_sem).lock); [ 32.800096] [ 32.800099] *** DEADLOCK *** [ 32.800101] [ 32.800105] 2 locks held by syz-executor975/4674: [ 32.800108] #0: 0000000054957df1 (&rq->lock){-.-.}, at: __schedule+0x24d/0x1df0 [ 32.800125] #1: 000000009ed2f2b3 (rcu_read_lock){....}, at: atomic_notifier_call_chain+0x0/0x190 [ 32.800142] [ 32.800146] stack backtrace: [ 32.800152] CPU: 1 PID: 4674 Comm: syz-executor975 Not tainted 4.19.0-rc2+ #123 [ 32.800159] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.800162] Call Trace: [ 32.800166] dump_stack+0x1c9/0x2b4 [ 32.800170] ? dump_stack_print_info.cold.2+0x52/0x52 [ 32.800174] ? vprintk_func+0x100/0x117 [ 32.800179] print_circular_bug.isra.34.cold.55+0x1bd/0x27d [ 32.800183] ? save_trace+0xe0/0x290 [ 32.800187] __lock_acquire+0x3449/0x5020 [ 32.800191] ? mark_held_locks+0x160/0x160 [ 32.800195] ? mark_held_locks+0x160/0x160 [ 32.800199] ? update_load_avg+0x389/0x27d0 [ 32.800204] ? trace_hardirqs_on+0x2c0/0x2c0 [ 32.800208] ? attach_entity_load_avg+0x860/0x860 [ 32.800212] ? update_load_avg+0x389/0x27d0 [ 32.800216] ? print_usage_bug+0xc0/0xc0 [ 32.800220] ? graph_lock+0x170/0x170 [ 32.800225] ? attach_entity_load_avg+0x860/0x860 [ 32.800228] ? graph_lock+0x170/0x170 [ 32.800233] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.800237] lock_acquire+0x1e4/0x4f0 [ 32.800241] ? down_trylock+0x13/0x70 [ 32.800245] ? lock_release+0x9f0/0x9f0 [ 32.800249] ? trace_hardirqs_off+0xb8/0x2b0 [ 32.800253] ? trace_hardirqs_on+0x2c0/0x2c0 [ 32.800258] ? trace_hardirqs_off+0xb8/0x2b0 [ 32.800262] ? log_store+0x34f/0x4c0 [ 32.800265] ? vprintk_emit+0x31f/0x910 [ 32.800270] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.800274] ? down_trylock+0x13/0x70 [ 32.800277] down_trylock+0x13/0x70 [ 32.800282] __down_trylock_console_sem+0xae/0x200 [ 32.800286] console_trylock+0x15/0xa0 [ 32.800290] vprintk_emit+0x31f/0x910 [ 32.800294] ? wake_up_klogd+0x110/0x110 [ 32.800298] ? __lock_acquire+0x7fc/0x5020 [ 32.800302] ? mark_held_locks+0x160/0x160 [ 32.800315] vprintk_default+0x28/0x30 [ 32.800319] vprintk_func+0x7a/0x117 [ 32.800323] printk+0xa7/0xcf [ 32.800328] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 32.800333] ? kasan_die_handler.cold.22+0x5/0x30 [ 32.800337] ? kasan_die_handler+0x1a/0x31 [ 32.800341] kasan_die_handler.cold.22+0x11/0x30 [ 32.800346] notifier_call_chain+0x180/0x390 [ 32.800350] ? unregister_die_notifier+0x20/0x20 [ 32.800354] ? rcu_is_watching+0x8c/0x150 [ 32.800358] ? rcu_cleanup_dead_rnp+0x200/0x200 [ 32.800363] ? rcu_is_watching+0x8c/0x150 [ 32.800367] ? rcu_cleanup_dead_rnp+0x200/0x200 [ 32.800371] ? cmp_ex_search+0x8c/0xb0 [ 32.800376] atomic_notifier_call_chain+0x98/0x190 [ 32.800379] notify_die+0x1be/0x2e0 [ 32.800384] ? __atomic_notifier_call_chain+0x1a0/0x1a0 [ 32.800389] ? search_module_extables+0x18/0xc0 [ 32.800392] ? __schedule+0xf48/0x1df0 [ 32.800396] ? __schedule+0xf48/0x1df0 [ 32.800401] ? search_exception_tables+0x47/0x50 [ 32.800405] do_general_protection+0x248/0x2f0 [ 32.800409] general_protection+0x1e/0x30 [ 32.800414] RIP: 0010:__schedule+0xf48/0x1df0 [ 32.800427] 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 1c 9a e8 fa eb 9f 4c 89 e6 48 89 df e8 ef [ 32.800431] RSP: 0018:ffff8801d9a86ec8 EFLAGS: 00010806 [ 32.800440] RAX: 1bd5a00000000022 RBX: ffff8801b6352600 RCX: 1ffff1003735a88f [ 32.800445] RDX: 0000000040000000 RSI: 0000000000000000 RDI: dead000000000110 [ 32.800451] RBP: ffff8801d9a87098 R08: ffff8801b6352600 R09: fffff520003d1a47 [ 32.800457] R10: fffff520003d1a47 R11: ffffc90001e8d23b R12: ffff8801ce196380 [ 32.800463] R13: dead000000000100 R14: dffffc0000000000 R15: ffff8801db12cc80 [ 32.800467] ? __schedule+0xf1e/0x1df0 [ 32.800471] ? mark_free_pages+0x3b0/0x3b0 [ 32.800475] ? kvm_vm_release+0x42/0x50 [ 32.800479] ? __sched_text_start+0x8/0x8 [ 32.800483] ? find_held_lock+0x36/0x1c0 [ 32.800488] ? check_same_owner+0x340/0x340 [ 32.800492] ? __free_pages+0x10a/0x190 [ 32.800496] preempt_schedule_common+0x22/0x60 [ 32.800500] _cond_resched+0x1d/0x30 [ 32.800503] cpus_read_lock+0x22/0xa0 [ 32.800508] static_key_slow_dec+0x57/0xa0 [ 32.800512] kvm_arch_vcpu_uninit+0x18e/0x1d0 [ 32.800516] kvm_vcpu_uninit+0x44/0x90 [ 32.800520] vmx_free_vcpu+0x23a/0x300 [ 32.800524] kvm_arch_destroy_vm+0x365/0x7c0 [ 32.800528] ? check_memory_region+0x173/0x1b0 [ 32.800532] ? kvm_arch_sync_events+0x30/0x30 [ 32.800537] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.800542] ? mmu_notifier_unregister+0x474/0x600 [ 32.800546] ? trace_hardirqs_on+0x2c0/0x2c0 [ 32.800550] ? kfree+0x111/0x210 [ 32.800554] ? __mmu_notifier_register+0x30/0x30 [ 32.800558] ? __free_pages+0x10a/0x190 [ 32.800562] ? free_unref_page+0x930/0x930 [ 32.800566] kvm_put_kvm+0x73f/0x1060 [ 32.800571] ? kvm_write_guest_cached+0x40/0x40 [ 32.800575] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.800579] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.800584] ? lockdep_hardirqs_on+0x421/0x5c0 [ 32.800588] ? kasan_check_write+0x14/0x20 [ 32.800592] ? do_raw_spin_lock+0xc1/0x200 [ 32.800596] ? kvm_irqfd_release+0xdd/0x120 [ 32.800600] ? kvm_irqfd_release+0xdd/0x120 [ 32.800604] ? kvm_put_kvm+0x1060/0x1060 [ 32.800611] kvm_vm_release+0x42/0x50 [ 32.800614] __fput+0x38a/0xa40 [ 32.800618] ? __alloc_file+0x400/0x400 [ 32.800622] ? check_same_owner+0x340/0x340 [ 32.800626] ? kasan_check_write+0x14/0x20 [ 32.800630] ? do_raw_spin_lock+0xc1/0x200 [ 32.800634] ____fput+0x15/0x20 [ 32.800638] task_work_run+0x1e8/0x2a0 [ 32.800642] ? task_work_cancel+0x240/0x240 [ 32.800647] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.800651] ? switch_task_namespaces+0xa2/0xd0 [ 32.800655] do_exit+0x1ae4/0x26e0 [ 32.800659] ? check_memory_region+0x171/0x1b0 [ 32.800664] ? mm_update_next_owner+0x9a0/0x9a0 [ 32.800668] ? kvm_set_memory_region+0x50/0x50 [ 32.800673] ? wait_for_completion+0x8d0/0x8d0 [ 32.800677] ? get_unused_fd_flags+0x1a0/0x1a0 [ 32.800681] ? kfree+0x111/0x210 [ 32.800685] ? kasan_check_read+0x11/0x20 [ 32.800689] ? rcu_is_watching+0x8c/0x150 [ 32.800693] ? rcu_pm_notify+0xc0/0xc0 [ 32.800697] ? kvm_vcpu_ioctl+0x2b5/0x1280 [ 32.800702] ? rcu_read_lock_sched_held+0x108/0x120 [ 32.800705] ? kfree+0x1d7/0x210 [ 32.800710] ? kvm_vcpu_ioctl+0x2ba/0x1280 [ 32.800715] ? kvm_uevent_notify_change.part.32+0x440/0x440 [ 32.800719] ? kvm_dev_ioctl+0x18a/0x1b10 [ 32.800722] ? save_stack+0xa9/0xd0 [ 32.800726] ? save_stack+0x43/0xd0 [ 32.800731] Lost 49 message(s)! [ 33.839343] ---[ end trace af29054b518fd373 ]--- [ 33.844112] RIP: 0010:__schedule+0xf48/0x1df0 [ 33.848608] 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 1c 9a e8 fa eb 9f 4c 89 e6 48 89 df e8 ef [ 33.867506] RSP: 0018:ffff8801d9a86ec8 EFLAGS: 00010806 [ 33.872870] RAX: 1bd5a00000000022 RBX: ffff8801b6352600 RCX: 1ffff1003735a88f [ 33.880161] RDX: 0000000040000000 RSI: 0000000000000000 RDI: dead000000000110 [ 33.887426] RBP: ffff8801d9a87098 R08: ffff8801b6352600 R09: fffff520003d1a47 [ 33.894703] R10: fffff520003d1a47 R11: ffffc90001e8d23b R12: ffff8801ce196380 [ 33.901970] R13: dead000000000100 R14: dffffc0000000000 R15: ffff8801db12cc80 [ 33.909240] FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 33.917465] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 33.923348] CR2: 00000000f7f23c7f CR3: 000000000806a000 CR4: 00000000001426e0 [ 33.930615] Kernel panic - not syncing: Fatal exception [ 35.030626] Shutting down cpus with NMI [ 35.034984] Dumping ftrace buffer: [ 35.038510] (ftrace buffer empty) [ 35.042198] Kernel Offset: disabled [ 35.045811] Rebooting in 86400 seconds..