[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2. [ 24.692824] audit: type=1800 audit(1539477741.231:21): pid=5181 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.717251] audit: type=1800 audit(1539477741.231:22): pid=5181 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[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.65' (ECDSA) to the list of known hosts. syzkaller login: [ 35.545748] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 35.600774] WARNING: CPU: 0 PID: 5339 at kernel/cgroup/cgroup.c:2935 cgroup_apply_control_enable+0x22c/0xea0 [ 35.610832] Kernel panic - not syncing: panic_on_warn set ... [ 35.610832] [ 35.618194] CPU: 0 PID: 5339 Comm: syz-executor636 Not tainted 4.19.0-rc7+ #140 [ 35.625638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.634972] Call Trace: [ 35.637549] dump_stack+0x1c4/0x2b4 [ 35.641169] ? dump_stack_print_info.cold.2+0x52/0x52 [ 35.646358] panic+0x238/0x4e7 [ 35.649552] ? add_taint.cold.5+0x16/0x16 [ 35.653687] ? __warn.cold.8+0x148/0x1ba [ 35.657731] ? __warn.cold.8+0x117/0x1ba [ 35.661779] ? cgroup_apply_control_enable+0x22c/0xea0 [ 35.667047] __warn.cold.8+0x163/0x1ba [ 35.670924] ? rcu_bh_qs+0xc0/0xc0 [ 35.674449] ? cgroup_apply_control_enable+0x22c/0xea0 [ 35.679768] report_bug+0x254/0x2d0 [ 35.683397] do_error_trap+0x1fc/0x4d0 [ 35.687297] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.692817] ? math_error+0x3f0/0x3f0 [ 35.696611] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.701473] ? trace_hardirqs_on_caller+0x310/0x310 [ 35.706476] ? graph_lock+0x170/0x170 [ 35.710260] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.715785] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.720616] do_invalid_op+0x1b/0x20 [ 35.724347] invalid_op+0x14/0x20 [ 35.727787] RIP: 0010:cgroup_apply_control_enable+0x22c/0xea0 [ 35.733654] Code: 48 c1 e8 03 42 80 3c 28 00 0f 85 18 0a 00 00 49 8b 5f 18 31 ff 83 e3 02 48 89 de e8 0e 64 07 00 48 85 db 74 07 e8 d4 62 07 00 <0f> 0b e8 cd 62 07 00 48 8b 85 a0 fe ff ff 48 c1 e8 03 42 80 3c 28 [ 35.752541] RSP: 0018:ffff8801d86977f0 EFLAGS: 00010293 [ 35.757887] RAX: ffff8801d88a2040 RBX: 0000000000000002 RCX: ffffffff81777672 [ 35.765140] RDX: 0000000000000000 RSI: ffffffff8177767c RDI: 0000000000000007 [ 35.772392] RBP: ffff8801d86979a0 R08: ffff8801d88a2040 R09: 1ffffffff1273965 [ 35.779644] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffffffff893c50a0 [ 35.786898] R13: dffffc0000000000 R14: 000000000000000b R15: ffff8801c207ea40 [ 35.794164] ? cgroup_apply_control_enable+0x222/0xea0 [ 35.799431] ? cgroup_apply_control_enable+0x22c/0xea0 [ 35.804700] ? cgroup_save_control+0x2c0/0x2c0 [ 35.809283] ? css_next_descendant_pre+0x77/0x190 [ 35.814126] ? cgroup_propagate_control+0x3ef/0x5c0 [ 35.819130] ? css_next_descendant_pre+0x190/0x190 [ 35.824051] cgroup_apply_control+0x1f/0x50 [ 35.828359] cgroup_type_write+0x54b/0x710 [ 35.832593] ? cgroup_procs_write+0x500/0x500 [ 35.837096] cgroup_file_write+0x2f7/0x7e0 [ 35.841324] ? cgroup_migrate_add_task+0xcd0/0xcd0 [ 35.846240] ? __lock_is_held+0xb5/0x140 [ 35.850296] ? cgroup_migrate_add_task+0xcd0/0xcd0 [ 35.855210] kernfs_fop_write+0x2ba/0x480 [ 35.859356] __vfs_write+0x119/0x9f0 [ 35.863075] ? check_preemption_disabled+0x48/0x200 [ 35.868077] ? kernfs_fop_open+0xf90/0xf90 [ 35.872297] ? kernel_read+0x120/0x120 [ 35.876186] ? __lock_is_held+0xb5/0x140 [ 35.880242] ? rcu_read_lock_sched_held+0x108/0x120 [ 35.885260] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.890782] ? __sb_start_write+0x1b2/0x370 [ 35.895092] vfs_write+0x1fc/0x560 [ 35.898635] ksys_write+0x101/0x260 [ 35.902249] ? __ia32_sys_read+0xb0/0xb0 [ 35.906300] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 35.911737] __x64_sys_write+0x73/0xb0 [ 35.915612] do_syscall_64+0x1b9/0x820 [ 35.919489] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 35.924867] ? syscall_return_slowpath+0x5e0/0x5e0 [ 35.929798] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.934627] ? trace_hardirqs_on_caller+0x310/0x310 [ 35.939628] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 35.944636] ? prepare_exit_to_usermode+0x291/0x3b0 [ 35.949639] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.954483] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.959655] RIP: 0033:0x441c19 [ 35.962838] Code: e8 cc b2 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 35.981785] RSP: 002b:00007ffc41f0c8b8 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 [ 35.989482] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c19 [ 35.996736] RDX: 0000000000000009 RSI: 0000000020000140 RDI: 0000000000000006 [ 36.003987] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 36.011240] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000000001 [ 36.018491] R13: 0000000000008aee R14: 0000000000000000 R15: 0000000000000000 [ 36.026771] Kernel Offset: disabled [ 36.030463] Rebooting in 86400 seconds..