[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ 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... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 69.538801][ T28] audit: type=1400 audit(1596728041.024:8): avc: denied { execmem } for pid=6838 comm="syz-executor025" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program executing program executing program executing program executing program executing program [ 69.994149][ T6845] ------------[ cut here ]------------ [ 70.001359][ T6845] WARNING: CPU: 0 PID: 6845 at kernel/entry/common.c:338 irqentry_exit+0x47/0x90 [ 70.010646][ T6845] Kernel panic - not syncing: panic_on_warn set ... [ 70.017739][ T6845] CPU: 0 PID: 6845 Comm: syz-executor025 Not tainted 5.8.0-syzkaller #0 [ 70.027365][ T6845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.038106][ T6845] Call Trace: [ 70.041929][ T6845] dump_stack+0x18f/0x20d [ 70.046261][ T6845] panic+0x2e3/0x75c [ 70.050166][ T6845] ? __warn_printk+0xf3/0xf3 [ 70.054735][ T6845] ? printk+0xba/0xed [ 70.058702][ T6845] ? log_store.cold+0x16/0x16 [ 70.063367][ T6845] ? __warn.cold+0x5/0x45 [ 70.067735][ T6845] ? __warn+0xd6/0x1f2 [ 70.071809][ T6845] ? irqentry_exit+0x47/0x90 [ 70.076403][ T6845] __warn.cold+0x20/0x45 [ 70.080669][ T6845] ? irqentry_exit+0x47/0x90 [ 70.085245][ T6845] report_bug+0x1bd/0x210 [ 70.089558][ T6845] handle_bug+0x38/0x90 [ 70.093707][ T6845] ? __bad_area_nosemaphore+0xa9/0x480 [ 70.099173][ T6845] exc_invalid_op+0x14/0x40 [ 70.103670][ T6845] asm_exc_invalid_op+0x12/0x20 [ 70.108509][ T6845] RIP: 0010:irqentry_exit+0x47/0x90 [ 70.113734][ T6845] Code: 27 f6 87 91 00 00 00 02 74 18 40 84 f6 75 3b 65 8b 05 ad ea 12 78 a9 ff ff ff 7f 74 11 e9 91 cd 8a f9 40 84 f6 75 3f c3 eb 89 <0f> 0b eb ca e8 f0 bf 72 f9 65 48 8b 04 25 00 ff 01 00 48 8b 00 a8 [ 70.133328][ T6845] RSP: 0000:ffffc900054471d0 EFLAGS: 00010002 [ 70.139385][ T6845] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8179db77 [ 70.147519][ T6845] RDX: ffff88809b98e340 RSI: 0000000000000000 RDI: ffffc90005447208 [ 70.155666][ T6845] RBP: ffffc90005447208 R08: 0000000000000000 R09: 0000000000000000 [ 70.163646][ T6845] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 70.171796][ T6845] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 70.179854][ T6845] ? trace_hardirqs_off+0x27/0x210 [ 70.184953][ T6845] exc_page_fault+0xc2/0x160 [ 70.189540][ T6845] asm_exc_page_fault+0x1e/0x30 [ 70.194484][ T6845] RIP: 0010:__softirqentry_text_end+0x39/0x55 [ 70.200643][ T6845] Code: be 04 e0 ff ba f2 ff ff ff 31 c9 e9 db c5 ce ff 41 bf f2 ff ff ff 31 c0 e9 6a 36 e1 f8 41 bf f2 ff ff ff 31 ed e9 85 36 e1 f8 <41> be f2 ff ff ff 48 31 c0 e9 92 39 e1 f8 41 be f2 ff ff ff 48 31 [ 70.221651][ T6845] RSP: 0000:ffffc900054472b0 EFLAGS: 00010046 [ 70.227881][ T6845] RAX: 0000000000000000 RBX: ffffc90005447370 RCX: ffffffff810143e2 [ 70.236129][ T6845] RDX: ffff88809b98e340 RSI: ffffffff810143f0 RDI: 0000000000000006 [ 70.244147][ T6845] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff88809b98e347 [ 70.252135][ T6845] R10: 0000000000000000 R11: 0000000000000001 R12: ffffc9000544737c [ 70.260127][ T6845] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88809b98e340 [ 70.268112][ T6845] ? perf_callchain_user+0x7f2/0xba0 [ 70.273380][ T6845] ? perf_callchain_user+0x800/0xba0 [ 70.278729][ T6845] get_perf_callchain+0x321/0x620 [ 70.283743][ T6845] ? put_callchain_entry+0x90/0x90 [ 70.289277][ T6845] ? startup_64+0x2/0x30 [ 70.293516][ T6845] perf_callchain+0x165/0x1c0 [ 70.298301][ T6845] perf_prepare_sample+0x8fd/0x1d40 [ 70.303947][ T6845] ? perf_callchain+0x1c0/0x1c0 [ 70.309404][ T6845] perf_event_output_forward+0xf3/0x270 [ 70.315300][ T6845] ? perf_prepare_sample+0x1d40/0x1d40 [ 70.321458][ T6845] ? perf_tp_event+0x622/0xb50 [ 70.326240][ T6845] ? mark_lock+0xbc/0x1710 [ 70.330851][ T6845] __perf_event_overflow+0x13c/0x370 [ 70.336195][ T6845] perf_swevent_event+0x4b9/0x550 [ 70.341215][ T6845] perf_tp_event+0x2e4/0xb50 [ 70.345790][ T6845] ? perf_trace_lock+0x2e2/0x4a0 [ 70.350744][ T6845] ? perf_event_mmap_output+0xa30/0xa30 [ 70.356305][ T6845] ? is_bpf_text_address+0xa9/0x160 [ 70.361523][ T6845] ? perf_swevent_event+0x144/0x550 [ 70.366719][ T6845] ? tracing_generic_entry_update+0x1ed/0x270 [ 70.372868][ T6845] ? perf_tp_event+0x622/0xb50 [ 70.377679][ T6845] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.383759][ T6845] ? mark_lock+0xbc/0x1710 [ 70.388184][ T6845] ? __lock_acquire+0xbb5/0x5640 [ 70.393123][ T6845] ? perf_trace_run_bpf_submit+0x11c/0x200 [ 70.398932][ T6845] perf_trace_run_bpf_submit+0x11c/0x200 [ 70.405529][ T6845] perf_trace_lock+0x2e2/0x4a0 [ 70.410279][ T6845] ? lock_acquire+0x1f1/0xad0 [ 70.415522][ T6845] ? lock_page_memcg+0x30/0x260 [ 70.420362][ T6845] ? __lockdep_free_key_range+0x110/0x110 [ 70.426065][ T6845] ? lock_release+0x8e0/0x8e0 [ 70.430849][ T6845] ? lock_acquire+0x1f1/0xad0 [ 70.435565][ T6845] ? alloc_set_pte+0x13b9/0x1ac0 [ 70.440607][ T6845] ? unlock_page_memcg+0x9f/0x160 [ 70.446771][ T6845] ? __lockdep_free_key_range+0x110/0x110 [ 70.452615][ T6845] lock_release+0x571/0x8e0 [ 70.457115][ T6845] ? lock_downgrade+0x830/0x830 [ 70.462870][ T6845] ? lock_page_memcg+0xd4/0x260 [ 70.467873][ T6845] alloc_set_pte+0x3af/0x1ac0 [ 70.472746][ T6845] ? lock_is_held_type+0xbb/0xf0 [ 70.477695][ T6845] filemap_map_pages+0x103d/0x1280 [ 70.482806][ T6845] ? delete_from_page_cache+0x240/0x240 [ 70.488707][ T6845] ? fault_around_bytes_set+0x90/0x90 [ 70.494073][ T6845] handle_mm_fault+0x39b7/0x43f0 [ 70.499012][ T6845] ? apply_to_existing_page_range+0x40/0x40 [ 70.504913][ T6845] do_user_addr_fault+0x5a2/0xd00 [ 70.509934][ T6845] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 70.515542][ T6845] exc_page_fault+0xa8/0x160 [ 70.520164][ T6845] ? asm_exc_page_fault+0x8/0x30 [ 70.525087][ T6845] asm_exc_page_fault+0x1e/0x30 [ 70.529936][ T6845] RIP: 0033:0x49f4d0 [ 70.533986][ T6845] Code: Bad RIP value. [ 70.538048][ T6845] RSP: 002b:00007fff1785f378 EFLAGS: 00010202 [ 70.544320][ T6845] RAX: 000000000049f4d0 RBX: 0000000000000001 RCX: 00000000006d1190 [ 70.552305][ T6845] RDX: 0000000000402140 RSI: 0000000000000000 RDI: 00000000004bf848 [ 70.560345][ T6845] RBP: 00007fff1785f380 R08: 00000000004002c8 R09: 00000000004002c8 [ 70.568321][ T6845] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 70.576273][ T6845] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 70.585291][ T6845] Kernel Offset: disabled [ 70.589631][ T6845] Rebooting in 86400 seconds..