[info] Using makefile-style concurrent boot in runlevel 2. [ 24.395542] audit: type=1800 audit(1541840348.553:21): pid=5500 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.420316] audit: type=1800 audit(1541840348.553:22): pid=5500 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 syzkaller login: [ 32.545568] sshd (5640) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.85' (ECDSA) to the list of known hosts. executing program [ 39.086961] [ 39.088863] ********************************************************** [ 39.095575] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 39.102268] ** ** [ 39.108918] ** trace_printk() being used. Allocating extra memory. ** [ 39.115618] ** ** [ 39.122317] ** This means that this is a DEBUG kernel and it is ** [ 39.128972] ** unsafe for production use. ** [ 39.135668] ** ** [ 39.142349] ** If you see this message and you are not debugging ** [ 39.148995] ** the kernel, report this immediately to your vendor! ** [ 39.155685] ** ** [ 39.162477] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 39.169128] ********************************************************** [ 39.184735] ------------[ cut here ]------------ [ 39.189553] Please remove unsupported % in format string [ 39.195643] WARNING: CPU: 1 PID: 5656 at lib/vsprintf.c:2152 format_decode+0x8fc/0xaf0 [ 39.203697] Kernel panic - not syncing: panic_on_warn set ... [ 39.209566] CPU: 1 PID: 5656 Comm: syz-executor737 Not tainted 4.20.0-rc1+ #139 [ 39.216995] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.226332] Call Trace: [ 39.228916] dump_stack+0x244/0x39d [ 39.232533] ? dump_stack_print_info.cold.1+0x20/0x20 [ 39.237880] panic+0x2ad/0x55c [ 39.241070] ? add_taint.cold.5+0x16/0x16 [ 39.245212] ? __warn.cold.8+0x5/0x45 [ 39.249106] ? __warn+0xe8/0x1d0 [ 39.252470] ? format_decode+0x8fc/0xaf0 [ 39.256518] __warn.cold.8+0x20/0x45 [ 39.260228] ? rcu_softirq_qs+0x20/0x20 [ 39.264203] ? format_decode+0x8fc/0xaf0 [ 39.268262] report_bug+0x254/0x2d0 [ 39.271881] do_error_trap+0x11b/0x200 [ 39.275761] do_invalid_op+0x36/0x40 [ 39.279467] ? format_decode+0x8fc/0xaf0 [ 39.283521] invalid_op+0x14/0x20 [ 39.286963] RIP: 0010:format_decode+0x8fc/0xaf0 [ 39.291620] Code: e8 99 2e b5 f9 41 c6 45 00 12 e9 9b fd ff ff e8 8a 2e b5 f9 0f be f3 48 c7 c7 c0 f6 d5 88 c6 05 32 03 47 02 01 e8 44 90 7e f9 <0f> 0b 4d 8b 66 c0 e9 59 fe ff ff 48 8b bd 70 ff ff ff e8 7d 7c f8 [ 39.310515] RSP: 0018:ffff8801bf33f670 EFLAGS: 00010286 [ 39.315865] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 39.323117] RDX: 0000000000000000 RSI: ffffffff8165e9a5 RDI: 0000000000000005 [ 39.330498] RBP: ffff8801bf33f718 R08: ffff8801d8536500 R09: 0000000000000000 [ 39.337831] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801bf33faec [ 39.345102] R13: ffff8801bf33f790 R14: ffff8801bf33f6f0 R15: 0000000000000000 [ 39.352385] ? vprintk_func+0x85/0x181 [ 39.356270] ? enable_ptr_key_workfn+0x30/0x30 [ 39.360842] ? trace_hardirqs_off_caller+0x310/0x310 [ 39.365936] vsnprintf+0x185/0x1b60 [ 39.369551] ? pointer+0x900/0x900 [ 39.373079] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.378607] ? check_preemption_disabled+0x48/0x280 [ 39.383611] vscnprintf+0x2d/0x80 [ 39.387055] __trace_array_vprintk.part.59+0x5b/0x2f0 [ 39.392231] ? trace_hardirqs_off_caller+0x310/0x310 [ 39.397322] trace_vprintk+0x71/0x90 [ 39.401026] __trace_printk+0xce/0x120 [ 39.404900] ? __trace_bprintk+0x120/0x120 [ 39.409120] ? bpf_test_run+0x175/0x780 [ 39.413084] ? lock_downgrade+0x900/0x900 [ 39.417233] bpf_trace_printk+0xb30/0xc50 [ 39.421367] ? bpf_test_run+0x22b/0x780 [ 39.425329] ? bpf_probe_read_str+0x60/0x60 [ 39.429649] ? bpf_test_run+0x3cb/0x780 [ 39.433620] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.439163] ? check_preemption_disabled+0x48/0x280 [ 39.444180] ? kasan_check_read+0x11/0x20 [ 39.448321] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 39.453603] ? rcu_softirq_qs+0x20/0x20 [ 39.457580] ? bpf_cgroup_storage_release+0x220/0x220 [ 39.462766] bpf_prog_12183cdb1cd51dab+0x60b/0x1000 [ 39.467778] ? bpf_test_run+0x25d/0x780 [ 39.471767] ? netlink_diag_dump+0x2a0/0x2a0 [ 39.476172] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 39.481705] ? bpf_prog_test_run_skb+0x73b/0xcb0 [ 39.486735] ? bpf_test_finish.isra.9+0x1f0/0x1f0 [ 39.491575] ? bpf_prog_add+0x69/0xd0 [ 39.495367] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.500895] ? __bpf_prog_get+0x9b/0x290 [ 39.504948] ? bpf_test_finish.isra.9+0x1f0/0x1f0 [ 39.509777] ? bpf_prog_test_run+0x130/0x1a0 [ 39.514183] ? __x64_sys_bpf+0x3d8/0x520 [ 39.518236] ? bpf_prog_get+0x20/0x20 [ 39.522035] ? do_syscall_64+0x1b9/0x820 [ 39.526098] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 39.531463] ? syscall_return_slowpath+0x5e0/0x5e0 [ 39.536392] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.541237] ? trace_hardirqs_on_caller+0x310/0x310 [ 39.546246] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 39.551252] ? prepare_exit_to_usermode+0x291/0x3b0 [ 39.556259] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.561097] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.567743] Kernel Offset: disabled [ 39.571456] Rebooting in 86400 seconds..