[info] Using makefile-style concurrent boot in runlevel 2. [ 24.216881] audit: type=1800 audit(1541841429.161:21): pid=5499 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.248150] audit: type=1800 audit(1541841429.171:22): pid=5499 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.142793] [ 43.144524] ********************************************************** [ 43.151364] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 43.158054] ** ** [ 43.164697] ** trace_printk() being used. Allocating extra memory. ** [ 43.171727] ** ** [ 43.178406] ** This means that this is a DEBUG kernel and it is ** [ 43.185051] ** unsafe for production use. ** [ 43.191741] ** ** [ 43.198409] ** If you see this message and you are not debugging ** [ 43.205146] ** the kernel, report this immediately to your vendor! ** [ 43.211862] ** ** [ 43.218549] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 43.225198] ********************************************************** [ 43.241269] ------------[ cut here ]------------ [ 43.246081] Please remove unsupported % in format string [ 43.252045] WARNING: CPU: 1 PID: 5655 at lib/vsprintf.c:2152 format_decode+0x8fc/0xaf0 [ 43.260133] Kernel panic - not syncing: panic_on_warn set ... [ 43.266008] CPU: 1 PID: 5655 Comm: syz-executor872 Not tainted 4.20.0-rc1+ #288 [ 43.273433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.282765] Call Trace: [ 43.285345] dump_stack+0x244/0x39d [ 43.288958] ? dump_stack_print_info.cold.1+0x20/0x20 [ 43.294513] panic+0x2ad/0x55c [ 43.297772] ? add_taint.cold.5+0x16/0x16 [ 43.301926] ? __warn.cold.8+0x5/0x45 [ 43.305709] ? __warn+0xe8/0x1d0 [ 43.309086] ? format_decode+0x8fc/0xaf0 [ 43.313141] __warn.cold.8+0x20/0x45 [ 43.316833] ? rcu_softirq_qs+0x20/0x20 [ 43.320793] ? format_decode+0x8fc/0xaf0 [ 43.324834] report_bug+0x254/0x2d0 [ 43.328443] do_error_trap+0x11b/0x200 [ 43.332315] do_invalid_op+0x36/0x40 [ 43.336009] ? format_decode+0x8fc/0xaf0 [ 43.340050] invalid_op+0x14/0x20 [ 43.343488] RIP: 0010:format_decode+0x8fc/0xaf0 [ 43.348141] Code: e8 49 b4 b4 f9 41 c6 45 00 12 e9 9b fd ff ff e8 3a b4 b4 f9 0f be f3 48 c7 c7 00 f7 d5 88 c6 05 9a 8c 46 02 01 e8 f4 15 7e f9 <0f> 0b 4d 8b 66 c0 e9 59 fe ff ff 48 8b bd 70 ff ff ff e8 ed 00 f8 [ 43.367032] RSP: 0018:ffff8801b6907670 EFLAGS: 00010286 [ 43.372379] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 43.379638] RDX: 0000000000000000 RSI: ffffffff8165e9b5 RDI: 0000000000000005 [ 43.386891] RBP: ffff8801b6907718 R08: ffff8801ba6da240 R09: 0000000000000000 [ 43.394146] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801b6907aec [ 43.401398] R13: ffff8801b6907790 R14: ffff8801b69076f0 R15: 0000000000000000 [ 43.408669] ? vprintk_func+0x85/0x181 [ 43.412549] ? enable_ptr_key_workfn+0x30/0x30 [ 43.417117] ? trace_hardirqs_off_caller+0x310/0x310 [ 43.422207] vsnprintf+0x185/0x1b60 [ 43.425819] ? pointer+0x900/0x900 [ 43.429343] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.434873] ? check_preemption_disabled+0x48/0x280 [ 43.439876] vscnprintf+0x2d/0x80 [ 43.443314] __trace_array_vprintk.part.59+0x5b/0x2f0 [ 43.448484] ? trace_hardirqs_off_caller+0x310/0x310 [ 43.453589] trace_vprintk+0x71/0x90 [ 43.457296] __trace_printk+0xce/0x120 [ 43.461173] ? __trace_bprintk+0x120/0x120 [ 43.465409] ? bpf_test_run+0x175/0x780 [ 43.469380] ? lock_downgrade+0x900/0x900 [ 43.473530] bpf_trace_printk+0xb30/0xc50 [ 43.477671] ? bpf_test_run+0x22b/0x780 [ 43.481647] ? bpf_probe_read_str+0x60/0x60 [ 43.485969] ? bpf_test_run+0x3cb/0x780 [ 43.489931] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.495465] ? check_preemption_disabled+0x48/0x280 [ 43.500472] ? kasan_check_read+0x11/0x20 [ 43.504612] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 43.509873] ? rcu_softirq_qs+0x20/0x20 [ 43.513830] ? bpf_cgroup_storage_release+0x220/0x220 [ 43.519006] bpf_prog_12183cdb1cd51dab+0x926/0x1000 [ 43.524014] ? bpf_test_run+0x25d/0x780 [ 43.527981] ? netlink_diag_dump+0x2a0/0x2a0 [ 43.532515] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 43.538056] ? bpf_test_init.isra.10+0x70/0x100 [ 43.542800] ? bpf_prog_test_run_skb+0x73b/0xcb0 [ 43.547566] ? bpf_test_finish.isra.9+0x1f0/0x1f0 [ 43.552396] ? bpf_prog_add+0x69/0xd0 [ 43.556185] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.561701] ? __bpf_prog_get+0x9b/0x290 [ 43.565888] ? bpf_test_finish.isra.9+0x1f0/0x1f0 [ 43.570719] ? bpf_prog_test_run+0x130/0x1a0 [ 43.575129] ? __x64_sys_bpf+0x3d8/0x520 [ 43.579176] ? bpf_prog_get+0x20/0x20 [ 43.583039] ? do_syscall_64+0x1b9/0x820 [ 43.587101] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 43.592545] ? syscall_return_slowpath+0x5e0/0x5e0 [ 43.597472] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.602300] ? trace_hardirqs_on_caller+0x310/0x310 [ 43.607296] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 43.612295] ? prepare_exit_to_usermode+0x291/0x3b0 [ 43.617298] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.622176] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.628841] Kernel Offset: disabled [ 43.632514] Rebooting in 86400 seconds..