[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.110' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.483302][ T8485] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. [ 72.554889][ T8491] ================================================================================ [ 72.565105][ T8491] UBSAN: shift-out-of-bounds in arch/x86/kvm/vmx/pmu_intel.c:348:45 [ 72.573125][ T8491] shift exponent 197 is too large for 64-bit type 'long long unsigned int' [ 72.582782][ T8491] CPU: 0 PID: 8491 Comm: syz-executor902 Not tainted 5.10.0-rc6-next-20201207-syzkaller #0 [ 72.592777][ T8491] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.602854][ T8491] Call Trace: [ 72.606159][ T8491] dump_stack+0x107/0x163 [ 72.614230][ T8491] ubsan_epilogue+0xb/0x5a [ 72.618652][ T8491] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 72.625410][ T8491] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.631641][ T8491] ? kvm_find_cpuid_entry+0x185/0x1e0 [ 72.637040][ T8491] intel_pmu_refresh.cold+0x75/0x99 [ 72.642248][ T8491] ? intel_pmc_is_enabled+0x90/0x90 [ 72.647444][ T8491] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 72.653162][ T8491] ? kvm_init_mmu+0x2e7/0x17f0 [ 72.657938][ T8491] kvm_vcpu_after_set_cpuid+0x65a/0xf80 [ 72.663508][ T8491] kvm_vcpu_ioctl_set_cpuid2+0x160/0x440 [ 72.669154][ T8491] kvm_arch_vcpu_ioctl+0x11b6/0x2d70 [ 72.674555][ T8491] ? kvm_arch_vcpu_put+0x500/0x500 [ 72.679668][ T8491] ? lock_release+0x710/0x710 [ 72.684334][ T8491] ? find_held_lock+0x2d/0x110 [ 72.689098][ T8491] ? __mutex_lock+0x61b/0x1110 [ 72.693966][ T8491] ? kvm_vcpu_ioctl+0x175/0xdb0 [ 72.699673][ T8491] ? tomoyo_path_number_perm+0x24e/0x570 [ 72.705330][ T8491] ? mutex_lock_io_nested+0xf60/0xf60 [ 72.710709][ T8491] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 72.717153][ T8491] kvm_vcpu_ioctl+0x7b9/0xdb0 [ 72.721853][ T8491] ? gfn_to_hva_memslot+0x110/0x110 [ 72.727065][ T8491] ? generic_block_fiemap+0x60/0x60 [ 72.732295][ T8491] ? lock_downgrade+0x6d0/0x6d0 [ 72.738803][ T8491] ? __fget_files+0x2e3/0x430 [ 72.743486][ T8491] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.749731][ T8491] ? gfn_to_hva_memslot+0x110/0x110 [ 72.754925][ T8491] __x64_sys_ioctl+0x193/0x200 [ 72.759692][ T8491] do_syscall_64+0x2d/0x70 [ 72.764110][ T8491] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.769999][ T8491] RIP: 0033:0x448f39 [ 72.773894][ T8491] Code: e8 3c ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 4b ff fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 72.797750][ T8491] RSP: 002b:00007fdfd8aadd98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 72.806168][ T8491] RAX: ffffffffffffffda RBX: 00000000006ddc68 RCX: 0000000000448f39 [ 72.814137][ T8491] RDX: 0000000020000480 RSI: 000000004008ae90 RDI: 0000000000000008 [ 72.822192][ T8491] RBP: 00000000006ddc60 R08: 0000000000000000 R09: 0000000000000000 [ 72.830162][ T8491] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc6c [ 72.838144][ T8491] R13: ddd82e0065000000 R14: 099a300f0078010f R15: 2e320fc0000080b9 [ 72.849304][ T8491] ================================================================================ [ 72.859101][ T8491] Kernel panic - not syncing: panic_on_warn set ... [ 72.865740][ T8491] CPU: 0 PID: 8491 Comm: syz-executor902 Not tainted 5.10.0-rc6-next-20201207-syzkaller #0 [ 72.875716][ T8491] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.885756][ T8491] Call Trace: [ 72.889054][ T8491] dump_stack+0x107/0x163 [ 72.893386][ T8491] panic+0x343/0x77f [ 72.897266][ T8491] ? __warn_printk+0xf3/0xf3 [ 72.901865][ T8491] ? ubsan_epilogue+0x3e/0x5a [ 72.906533][ T8491] ubsan_epilogue+0x54/0x5a [ 72.911025][ T8491] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 72.917779][ T8491] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.924008][ T8491] ? kvm_find_cpuid_entry+0x185/0x1e0 [ 72.929379][ T8491] intel_pmu_refresh.cold+0x75/0x99 [ 72.934571][ T8491] ? intel_pmc_is_enabled+0x90/0x90 [ 72.939759][ T8491] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 72.945467][ T8491] ? kvm_init_mmu+0x2e7/0x17f0 [ 72.950240][ T8491] kvm_vcpu_after_set_cpuid+0x65a/0xf80 [ 72.955781][ T8491] kvm_vcpu_ioctl_set_cpuid2+0x160/0x440 [ 72.961403][ T8491] kvm_arch_vcpu_ioctl+0x11b6/0x2d70 [ 72.966705][ T8491] ? kvm_arch_vcpu_put+0x500/0x500 [ 72.971810][ T8491] ? lock_release+0x710/0x710 [ 72.976468][ T8491] ? find_held_lock+0x2d/0x110 [ 72.981228][ T8491] ? __mutex_lock+0x61b/0x1110 [ 72.985978][ T8491] ? kvm_vcpu_ioctl+0x175/0xdb0 [ 72.990813][ T8491] ? tomoyo_path_number_perm+0x24e/0x570 [ 72.996435][ T8491] ? mutex_lock_io_nested+0xf60/0xf60 [ 73.001791][ T8491] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 73.007602][ T8491] kvm_vcpu_ioctl+0x7b9/0xdb0 [ 73.012283][ T8491] ? gfn_to_hva_memslot+0x110/0x110 [ 73.017471][ T8491] ? generic_block_fiemap+0x60/0x60 [ 73.022655][ T8491] ? lock_downgrade+0x6d0/0x6d0 [ 73.027498][ T8491] ? __fget_files+0x2e3/0x430 [ 73.032166][ T8491] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.038397][ T8491] ? gfn_to_hva_memslot+0x110/0x110 [ 73.043585][ T8491] __x64_sys_ioctl+0x193/0x200 [ 73.048438][ T8491] do_syscall_64+0x2d/0x70 [ 73.052860][ T8491] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.058741][ T8491] RIP: 0033:0x448f39 [ 73.062626][ T8491] Code: e8 3c ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 4b ff fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.082233][ T8491] RSP: 002b:00007fdfd8aadd98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 73.090636][ T8491] RAX: ffffffffffffffda RBX: 00000000006ddc68 RCX: 0000000000448f39 [ 73.098590][ T8491] RDX: 0000000020000480 RSI: 000000004008ae90 RDI: 0000000000000008 [ 73.106545][ T8491] RBP: 00000000006ddc60 R08: 0000000000000000 R09: 0000000000000000 [ 73.114612][ T8491] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc6c [ 73.122585][ T8491] R13: ddd82e0065000000 R14: 099a300f0078010f R15: 2e320fc0000080b9 [ 73.131334][ T8491] Kernel Offset: disabled [ 73.135745][ T8491] Rebooting in 86400 seconds..