[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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 '10.128.0.170' (ECDSA) to the list of known hosts. executing program executing program executing program executing program syzkaller login: [ 56.527083][ T6820] ------------[ cut here ]------------ [ 56.532563][ T6820] WARNING: CPU: 0 PID: 6820 at arch/x86/entry/common.c:692 idtentry_exit+0x4a/0x90 [ 56.541818][ T6820] Kernel panic - not syncing: panic_on_warn set ... [ 56.548474][ T6820] CPU: 0 PID: 6820 Comm: syz-executor643 Not tainted 5.8.0-rc6-next-20200720-syzkaller #0 [ 56.558341][ T6820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.568374][ T6820] Call Trace: [ 56.571666][ T6820] dump_stack+0x18f/0x20d [ 56.575999][ T6820] panic+0x2e3/0x75c [ 56.579875][ T6820] ? __warn_printk+0xf3/0xf3 [ 56.584476][ T6820] ? printk+0xba/0xed [ 56.588445][ T6820] ? log_store.cold+0x16/0x16 [ 56.593207][ T6820] ? no_context+0x120/0x9f0 [ 56.597699][ T6820] ? __warn.cold+0x5/0x45 [ 56.602003][ T6820] ? __warn+0xd6/0x1f2 [ 56.606049][ T6820] ? idtentry_exit+0x4a/0x90 [ 56.610614][ T6820] __warn.cold+0x20/0x45 [ 56.614861][ T6820] ? idtentry_exit+0x4a/0x90 [ 56.619425][ T6820] report_bug+0x1bd/0x210 [ 56.623746][ T6820] handle_bug+0x38/0x90 [ 56.627879][ T6820] exc_invalid_op+0x14/0x40 [ 56.632357][ T6820] asm_exc_invalid_op+0x12/0x20 [ 56.637199][ T6820] RIP: 0010:idtentry_exit+0x4a/0x90 [ 56.642370][ T6820] Code: 91 00 00 00 02 74 18 40 84 f6 75 3e 65 8b 05 2d ab 16 78 a9 ff ff ff 7f 74 14 e9 a1 b6 8e f9 40 84 f6 75 42 c3 e9 86 fc ff ff <0f> 0b eb c7 e8 9d b4 76 f9 65 48 8b 04 25 c0 fe 01 00 48 8b 00 a8 [ 56.661961][ T6820] RSP: 0018:ffffc90001877190 EFLAGS: 00010002 [ 56.668037][ T6820] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff817a03c7 [ 56.675990][ T6820] RDX: ffff888091e80540 RSI: 0000000000000000 RDI: ffffc900018771c8 [ 56.683945][ T6820] RBP: ffffc900018771c8 R08: 000000000000dca0 R09: 0000000000000000 [ 56.691910][ T6820] R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000dca0 [ 56.699903][ T6820] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 56.707901][ T6820] ? trace_hardirqs_off+0x27/0x210 [ 56.713020][ T6820] exc_page_fault+0xc2/0x160 [ 56.717601][ T6820] asm_exc_page_fault+0x1e/0x30 [ 56.722435][ T6820] RIP: 0010:__softirqentry_text_end+0x39/0x55 [ 56.728476][ T6820] Code: e0 04 e0 ff b8 f2 ff ff ff 31 d2 e9 b6 47 cb ff 41 bf f2 ff ff ff 31 c0 e9 dc 41 e1 f8 41 bf f2 ff ff ff 31 ed e9 f7 41 e1 f8 <41> be f2 ff ff ff 48 31 c0 e9 04 45 e1 f8 41 be f2 ff ff ff 48 31 [ 56.748072][ T6820] RSP: 0018:ffffc90001877270 EFLAGS: 00010046 [ 56.754119][ T6820] RAX: 0000000000000000 RBX: ffffc90001877330 RCX: ffffffff81014f52 [ 56.762063][ T6820] RDX: ffff888091e80540 RSI: ffffffff81014f60 RDI: 0000000000000006 [ 56.770011][ T6820] RBP: 000000000000dca0 R08: 0000000000000000 R09: ffff888091e80547 [ 56.777958][ T6820] R10: 000000000000dca0 R11: 0000000000000001 R12: ffffc9000187733c [ 56.785918][ T6820] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888091e80540 [ 56.793893][ T6820] ? perf_callchain_user+0x7f2/0xba0 [ 56.799161][ T6820] ? perf_callchain_user+0x800/0xba0 [ 56.804442][ T6820] get_perf_callchain+0x321/0x620 [ 56.809455][ T6820] ? put_callchain_entry+0x90/0x90 [ 56.814555][ T6820] ? exc_page_fault+0xc2/0x160 [ 56.819312][ T6820] ? native_usergs_sysret64+0x2/0x10 [ 56.824575][ T6820] perf_callchain+0x165/0x1c0 [ 56.829243][ T6820] perf_prepare_sample+0x8fd/0x1d40 [ 56.834417][ T6820] ? perf_callchain+0x1c0/0x1c0 [ 56.839252][ T6820] ? put_callchain_entry+0x90/0x90 [ 56.844340][ T6820] perf_event_output_forward+0xf3/0x270 [ 56.849880][ T6820] ? perf_prepare_sample+0x1d40/0x1d40 [ 56.855314][ T6820] ? mark_lock+0xbc/0x1710 [ 56.859705][ T6820] ? perf_callchain+0x165/0x1c0 [ 56.864529][ T6820] ? perf_callchain+0x173/0x1c0 [ 56.869355][ T6820] __perf_event_overflow+0x13c/0x370 [ 56.874634][ T6820] perf_swevent_event+0x347/0x550 [ 56.879642][ T6820] ? tracing_generic_entry_update+0x1e3/0x260 [ 56.885697][ T6820] perf_tp_event+0x2e4/0xb50 [ 56.890282][ T6820] ? __bpf_address_lookup+0x290/0x290 [ 56.895629][ T6820] ? find_held_lock+0x2d/0x110 [ 56.900386][ T6820] ? perf_event_mmap_output+0xa30/0xa30 [ 56.905927][ T6820] ? perf_swevent_event+0x347/0x550 [ 56.911108][ T6820] ? tracing_generic_entry_update+0x1e3/0x260 [ 56.917153][ T6820] ? perf_tp_event+0x622/0xb50 [ 56.921892][ T6820] ? merge_sched_in+0x17b/0x12f0 [ 56.926816][ T6820] ? perf_event_mmap_output+0xa30/0xa30 [ 56.932353][ T6820] ? kvm_sched_clock_read+0x14/0x40 [ 56.937567][ T6820] ? sched_clock+0x2a/0x40 [ 56.941966][ T6820] ? lock_is_held_type+0xbb/0xf0 [ 56.946901][ T6820] ? perf_trace_run_bpf_submit+0x11c/0x200 [ 56.952710][ T6820] ? __perf_install_in_context+0x36f/0xa10 [ 56.958516][ T6820] perf_trace_run_bpf_submit+0x11c/0x200 [ 56.964165][ T6820] perf_trace_lock_acquire+0x33f/0x520 [ 56.969599][ T6820] ? mark_lock+0xbc/0x1710 [ 56.974005][ T6820] ? SOFTIRQ_verbose+0x10/0x10 [ 56.978756][ T6820] ? mark_held_locks+0x9f/0xe0 [ 56.983505][ T6820] lock_acquire+0x382/0xad0 [ 56.987993][ T6820] ? __do_sys_perf_event_open+0x1d29/0x2b50 [ 56.993878][ T6820] ? lock_release+0x8e0/0x8e0 [ 56.998590][ T6820] ? lock_is_held_type+0xbb/0xf0 [ 57.003515][ T6820] __mutex_lock+0x134/0x10d0 [ 57.008095][ T6820] ? __do_sys_perf_event_open+0x1d29/0x2b50 [ 57.013968][ T6820] ? __do_sys_perf_event_open+0x1d29/0x2b50 [ 57.019840][ T6820] ? find_held_lock+0x2d/0x110 [ 57.024594][ T6820] ? mutex_lock_io_nested+0xf60/0xf60 [ 57.029942][ T6820] ? __mutex_unlock_slowpath+0xe2/0x610 [ 57.035464][ T6820] ? mark_held_locks+0x9f/0xe0 [ 57.040203][ T6820] ? wait_for_completion+0x260/0x260 [ 57.045463][ T6820] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 57.051441][ T6820] ? trace_hardirqs_on+0x5f/0x220 [ 57.056466][ T6820] __do_sys_perf_event_open+0x1d29/0x2b50 [ 57.062170][ T6820] ? __up_read+0x1a1/0x7b0 [ 57.066576][ T6820] ? perf_event_set_output+0x4c0/0x4c0 [ 57.072014][ T6820] ? lock_is_held_type+0xbb/0xf0 [ 57.076932][ T6820] ? do_syscall_64+0x1c/0xe0 [ 57.081513][ T6820] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 57.087477][ T6820] do_syscall_64+0x60/0xe0 [ 57.091886][ T6820] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.097753][ T6820] RIP: 0033:0x4412e9 [ 57.101617][ T6820] Code: Bad RIP value. [ 57.105669][ T6820] RSP: 002b:00007ffea2f23638 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 57.114068][ T6820] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412e9 [ 57.122013][ T6820] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 [ 57.129964][ T6820] RBP: 000000000000dca0 R08: 0000000000000000 R09: 00000000004002c8 [ 57.137914][ T6820] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000402090 [ 57.145878][ T6820] R13: 0000000000402120 R14: 0000000000000000 R15: 0000000000000000 [ 57.154893][ T6820] Kernel Offset: disabled [ 57.159211][ T6820] Rebooting in 86400 seconds..