[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 61.684641][ T6840] ------------[ cut here ]------------ [ 61.690149][ T6840] WARNING: CPU: 0 PID: 6840 at kernel/entry/common.c:338 irqentry_exit+0x47/0x90 [ 61.699267][ T6840] Kernel panic - not syncing: panic_on_warn set ... [ 61.705853][ T6840] CPU: 0 PID: 6840 Comm: syz-executor197 Not tainted 5.9.0-rc1-syzkaller #0 [ 61.714514][ T6840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.724541][ T6840] Call Trace: [ 61.727807][ T6840] dump_stack+0x18f/0x20d [ 61.732117][ T6840] panic+0x2e3/0x75c [ 61.736002][ T6840] ? __warn_printk+0xf3/0xf3 [ 61.740569][ T6840] ? printk+0xba/0xed [ 61.744524][ T6840] ? log_store.cold+0x16/0x16 [ 61.749172][ T6840] ? no_context+0x120/0x9f0 [ 61.753647][ T6840] ? __warn.cold+0x5/0x4a [ 61.757954][ T6840] ? __warn+0xd6/0x1f2 [ 61.762009][ T6840] ? irqentry_exit+0x47/0x90 [ 61.766588][ T6840] __warn.cold+0x20/0x4a [ 61.770804][ T6840] ? irqentry_exit+0x47/0x90 [ 61.775367][ T6840] report_bug+0x1bd/0x210 [ 61.779669][ T6840] handle_bug+0x38/0x90 [ 61.783798][ T6840] exc_invalid_op+0x14/0x40 [ 61.788295][ T6840] asm_exc_invalid_op+0x12/0x20 [ 61.793134][ T6840] RIP: 0010:irqentry_exit+0x47/0x90 [ 61.798321][ T6840] Code: 27 f6 87 91 00 00 00 02 74 18 40 84 f6 75 3b 65 8b 05 4d c4 0e 78 a9 ff ff ff 7f 74 11 e9 e1 cd 86 f9 40 84 f6 75 3f c3 eb 89 <0f> 0b eb ca e8 40 ba 6e f9 65 48 8b 04 25 c0 fe 01 00 48 8b 00 a8 [ 61.817910][ T6840] RSP: 0000:ffffc900015772d0 EFLAGS: 00010002 [ 61.823950][ T6840] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff817a01e7 [ 61.831894][ T6840] RDX: ffff888093bde300 RSI: 0000000000000000 RDI: ffffc90001577308 [ 61.839837][ T6840] RBP: ffffc90001577308 R08: 0000000000000000 R09: 0000000000000000 [ 61.847782][ T6840] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 61.855725][ T6840] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 61.863677][ T6840] ? trace_hardirqs_off+0x27/0x210 [ 61.868782][ T6840] exc_page_fault+0xc2/0x160 [ 61.873347][ T6840] asm_exc_page_fault+0x1e/0x30 [ 61.878177][ T6840] RIP: 0010:__softirqentry_text_end+0x39/0x55 [ 61.884243][ T6840] Code: de 04 e0 ff ba f2 ff ff ff 31 c9 e9 db e5 d2 ff 41 bf f2 ff ff ff 31 c0 e9 1a 34 e1 f8 41 bf f2 ff ff ff 31 ed e9 35 34 e1 f8 <41> be f2 ff ff ff 48 31 c0 e9 42 37 e1 f8 41 be f2 ff ff ff 48 31 [ 61.903832][ T6840] RSP: 0000:ffffc900015773b0 EFLAGS: 00010046 [ 61.909871][ T6840] RAX: 0000000000000000 RBX: ffffc90001577470 RCX: ffffffff81014192 [ 61.917820][ T6840] RDX: ffff888093bde300 RSI: ffffffff810141a0 RDI: 0000000000000006 [ 61.925772][ T6840] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888093bde307 [ 61.933730][ T6840] R10: 0000000000000000 R11: 0000000000000001 R12: ffffc9000157747c [ 61.941673][ T6840] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888093bde300 [ 61.949642][ T6840] ? perf_callchain_user+0x7f2/0xba0 [ 61.954898][ T6840] ? perf_callchain_user+0x800/0xba0 [ 61.960158][ T6840] get_perf_callchain+0x321/0x620 [ 61.965156][ T6840] ? put_callchain_entry+0x90/0x90 [ 61.970241][ T6840] ? get_perf_callchain+0x3e0/0x620 [ 61.975412][ T6840] ? kvm_sched_clock_read+0x14/0x40 [ 61.980580][ T6840] ? sched_clock+0x2a/0x40 [ 61.984969][ T6840] ? sched_clock_cpu+0x18/0x1b0 [ 61.989793][ T6840] perf_callchain+0x165/0x1c0 [ 61.994447][ T6840] perf_prepare_sample+0x8fd/0x1d40 [ 61.999617][ T6840] ? perf_callchain+0x1c0/0x1c0 [ 62.004439][ T6840] ? lock_downgrade+0x830/0x830 [ 62.009263][ T6840] perf_event_output_forward+0xf3/0x270 [ 62.014784][ T6840] ? perf_prepare_sample+0x1d40/0x1d40 [ 62.020242][ T6840] ? perf_swevent_event+0x144/0x550 [ 62.025415][ T6840] ? tracing_generic_entry_update+0x1ed/0x270 [ 62.031453][ T6840] __perf_event_overflow+0x13c/0x370 [ 62.036711][ T6840] perf_swevent_event+0x4b9/0x550 [ 62.041706][ T6840] perf_tp_event+0x2e4/0xb50 [ 62.046270][ T6840] ? perf_event_mmap_output+0xa30/0xa30 [ 62.051787][ T6840] ? perf_tp_event+0x622/0xb50 [ 62.056522][ T6840] ? perf_event_mmap_output+0xa30/0xa30 [ 62.062040][ T6840] ? mark_lock+0xbc/0x1710 [ 62.066429][ T6840] ? __lock_acquire+0x16cb/0x5640 [ 62.071442][ T6840] ? perf_trace_run_bpf_submit+0x11c/0x200 [ 62.077221][ T6840] perf_trace_run_bpf_submit+0x11c/0x200 [ 62.082955][ T6840] perf_trace_lock_acquire+0x33f/0x520 [ 62.088403][ T6840] ? SOFTIRQ_verbose+0x10/0x10 [ 62.093152][ T6840] ? __lock_acquire+0xbb5/0x5640 [ 62.098061][ T6840] lock_acquire+0x382/0xad0 [ 62.102537][ T6840] ? clear_subpage+0x100/0x100 [ 62.107361][ T6840] ? lock_release+0x8e0/0x8e0 [ 62.112010][ T6840] ? lock_acquire+0x1f1/0xad0 [ 62.116675][ T6840] count_memcg_event_mm.part.0+0x39/0x3c0 [ 62.122364][ T6840] ? clear_subpage+0x100/0x100 [ 62.127106][ T6840] handle_mm_fault+0x11d/0x4590 [ 62.131939][ T6840] ? apply_to_existing_page_range+0x40/0x40 [ 62.137802][ T6840] ? down_read_trylock+0x193/0x350 [ 62.143020][ T6840] ? do_user_addr_fault+0x25e/0xbf0 [ 62.148236][ T6840] ? vmacache_find+0x62/0x310 [ 62.152890][ T6840] do_user_addr_fault+0x598/0xbf0 [ 62.157889][ T6840] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 62.163415][ T6840] exc_page_fault+0xa8/0x160 [ 62.168016][ T6840] ? asm_exc_page_fault+0x8/0x30 [ 62.172926][ T6840] asm_exc_page_fault+0x1e/0x30 [ 62.177760][ T6840] RIP: 0033:0x49f4b0 [ 62.181791][ T6840] Code: Bad RIP value. [ 62.185846][ T6840] RSP: 002b:00007ffd6ec41008 EFLAGS: 00010202 [ 62.191898][ T6840] RAX: 000000000049f4b0 RBX: 0000000000000001 RCX: 00000000006d1190 [ 62.199849][ T6840] RDX: 0000000000402120 RSI: 0000000000000000 RDI: 00000000004bf828 [ 62.207915][ T6840] RBP: 00007ffd6ec41010 R08: 0000000000000000 R09: 00000000004002c8 [ 62.215868][ T6840] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 62.223836][ T6840] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 62.233227][ T6840] Kernel Offset: disabled [ 62.237557][ T6840] Rebooting in 86400 seconds..