INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] 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 '10.128.10.22' (ECDSA) to the list of known hosts. 2018/03/30 10:43:08 parsed 1 programs 2018/03/30 10:43:08 executed programs: 0 syzkaller login: [ 24.534422] IPVS: ftp: loaded support on port[0] = 21 [ 24.584717] FAULT_INJECTION: forcing a failure. [ 24.584717] name failslab, interval 1, probability 0, space 0, times 1 [ 24.596000] CPU: 0 PID: 4397 Comm: syz-executor0 Not tainted 4.16.0-rc7+ #371 [ 24.603260] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.612595] Call Trace: [ 24.615178] dump_stack+0x194/0x24d [ 24.618790] ? arch_local_irq_restore+0x53/0x53 [ 24.623453] should_fail+0x8c0/0xa40 [ 24.627153] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 24.632232] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.637234] ? find_held_lock+0x35/0x1d0 [ 24.641275] ? __lock_is_held+0xb6/0x140 [ 24.645331] ? check_same_owner+0x320/0x320 [ 24.649629] ? rcu_note_context_switch+0x710/0x710 [ 24.654538] should_failslab+0xec/0x120 [ 24.658488] kmem_cache_alloc_node_trace+0x5a/0x760 [ 24.663487] ? idr_alloc_u32+0x390/0x390 [ 24.667546] mem_cgroup_css_alloc+0x3b6/0x19c0 [ 24.672120] ? setup_cpu_cache+0x1c0/0x1c0 [ 24.676342] ? __kernfs_new_node+0x3f5/0x570 [ 24.680738] ? kernfs_dop_revalidate+0x380/0x380 [ 24.685476] ? trace_hardirqs_off+0x10/0x10 [ 24.689775] ? kernfs_link_sibling+0x27d/0x380 [ 24.694331] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 24.699241] ? cgroup_kn_set_ugid+0x2c7/0x370 [ 24.703713] ? cgroup_file_name+0x1d0/0x1d0 [ 24.708005] ? mutex_unlock+0xd/0x10 [ 24.711724] ? __lock_is_held+0xb6/0x140 [ 24.715787] ? cgroup_addrm_files+0x67f/0xa70 [ 24.720261] ? trace_hardirqs_off+0x10/0x10 [ 24.724559] ? cgroup_file_write+0x710/0x710 [ 24.728947] ? cgroup_idr_replace+0x3f/0x50 [ 24.733240] ? trace_hardirqs_off+0x10/0x10 [ 24.737535] ? __lock_is_held+0xb6/0x140 [ 24.741574] ? __local_bh_enable_ip+0x121/0x230 [ 24.746228] ? __lock_is_held+0xb6/0x140 [ 24.750271] cgroup_apply_control_enable+0x44d/0xbc0 [ 24.755360] ? cgroup_propagate_control+0x570/0x570 [ 24.760357] ? css_populate_dir+0x289/0x420 [ 24.764658] cgroup_mkdir+0x56f/0xfc0 [ 24.768431] ? __lock_is_held+0xb6/0x140 [ 24.772478] ? cgroup_destroy_locked+0x750/0x750 [ 24.777207] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.782195] ? kmem_cache_free+0x258/0x2a0 [ 24.786405] ? set_nlink+0xc1/0x160 [ 24.790006] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 24.794918] ? generic_permission+0x105/0x3c0 [ 24.799396] ? cgroup_destroy_locked+0x750/0x750 [ 24.804126] kernfs_iop_mkdir+0x153/0x1e0 [ 24.808259] vfs_mkdir+0x390/0x600 [ 24.811780] SyS_mkdirat+0x22b/0x2b0 [ 24.815473] ? SyS_mknod+0x480/0x480 [ 24.819161] ? trace_hardirqs_on+0xd/0x10 [ 24.823291] ? do_syscall_64+0xb7/0x940 [ 24.827252] ? SyS_mknod+0x480/0x480 [ 24.830940] do_syscall_64+0x281/0x940 [ 24.834803] ? __do_page_fault+0xc90/0xc90 [ 24.839017] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.843749] ? syscall_return_slowpath+0x550/0x550 [ 24.848653] ? syscall_return_slowpath+0x2ac/0x550 [ 24.853558] ? prepare_exit_to_usermode+0x350/0x350 [ 24.858550] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 24.863891] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.868714] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 24.873876] RIP: 0033:0x4548b9 [ 24.877036] RSP: 002b:0000000000a3e968 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 24.885063] RAX: ffffffffffffffda RBX: 000000000197f914 RCX: 00000000004548b9 [ 24.892307] RDX: 0000000000000020 RSI: 0000000020000280 RDI: 0000000000000003 [ 24.899561] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 [ 24.907004] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 24.914249] R13: 00000000000003eb R14: 00000000006f7ea8 R15: 0000000000000034 [ 24.921666] kasan: CONFIG_KASAN_INLINE enabled [ 24.926381] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.933761] general protection fault: 0000 [#1] SMP KASAN [ 24.939285] Dumping ftrace buffer: [ 24.942796] (ftrace buffer empty) [ 24.946476] Modules linked in: [ 24.949642] CPU: 0 PID: 4397 Comm: syz-executor0 Not tainted 4.16.0-rc7+ #371 [ 24.956903] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.966235] RIP: 0010:__mem_cgroup_free+0x71/0x110 [ 24.971130] RSP: 0018:ffff8801b60075a8 EFLAGS: 00010206 [ 24.976466] RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffffffff82b16fed [ 24.983707] RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000000000088 [ 24.990949] RBP: ffff8801b60075c8 R08: 0000000000000000 R09: ffff8801b60073a0 [ 24.998277] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.005515] R13: ffff8801b5d5e380 R14: dffffc0000000000 R15: ffff8801b5d5e380 [ 25.012759] FS: 000000000197f940(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 25.020967] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.026842] CR2: 00000000004d8104 CR3: 00000001b61f4006 CR4: 00000000001606f0 [ 25.034094] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.041335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.048573] Call Trace: [ 25.051139] mem_cgroup_css_alloc+0x403/0x19c0 [ 25.055698] ? setup_cpu_cache+0x1c0/0x1c0 [ 25.059911] ? __kernfs_new_node+0x3f5/0x570 [ 25.064291] ? kernfs_dop_revalidate+0x380/0x380 [ 25.069026] ? trace_hardirqs_off+0x10/0x10 [ 25.073320] ? kernfs_link_sibling+0x27d/0x380 [ 25.077872] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 25.082775] ? cgroup_kn_set_ugid+0x2c7/0x370 [ 25.087240] ? cgroup_file_name+0x1d0/0x1d0 [ 25.091531] ? mutex_unlock+0xd/0x10 [ 25.095218] ? __lock_is_held+0xb6/0x140 [ 25.099253] ? cgroup_addrm_files+0x67f/0xa70 [ 25.103721] ? trace_hardirqs_off+0x10/0x10 [ 25.108016] ? cgroup_file_write+0x710/0x710 [ 25.112402] ? cgroup_idr_replace+0x3f/0x50 [ 25.116697] ? trace_hardirqs_off+0x10/0x10 [ 25.120990] ? __lock_is_held+0xb6/0x140 [ 25.125032] ? __local_bh_enable_ip+0x121/0x230 [ 25.129675] ? __lock_is_held+0xb6/0x140 [ 25.133710] cgroup_apply_control_enable+0x44d/0xbc0 [ 25.138789] ? cgroup_propagate_control+0x570/0x570 [ 25.143779] ? css_populate_dir+0x289/0x420 [ 25.148071] cgroup_mkdir+0x56f/0xfc0 [ 25.151845] ? __lock_is_held+0xb6/0x140 [ 25.155878] ? cgroup_destroy_locked+0x750/0x750 [ 25.160601] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.165588] ? kmem_cache_free+0x258/0x2a0 [ 25.169797] ? set_nlink+0xc1/0x160 [ 25.173395] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 25.178293] ? generic_permission+0x105/0x3c0 [ 25.182759] ? cgroup_destroy_locked+0x750/0x750 [ 25.187483] kernfs_iop_mkdir+0x153/0x1e0 [ 25.191605] vfs_mkdir+0x390/0x600 [ 25.195126] SyS_mkdirat+0x22b/0x2b0 [ 25.198814] ? SyS_mknod+0x480/0x480 [ 25.202497] ? trace_hardirqs_on+0xd/0x10 [ 25.206617] ? do_syscall_64+0xb7/0x940 [ 25.210573] ? SyS_mknod+0x480/0x480 [ 25.214257] do_syscall_64+0x281/0x940 [ 25.218117] ? __do_page_fault+0xc90/0xc90 [ 25.222321] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.227046] ? syscall_return_slowpath+0x550/0x550 [ 25.231945] ? syscall_return_slowpath+0x2ac/0x550 [ 25.236842] ? prepare_exit_to_usermode+0x350/0x350 [ 25.241830] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 25.247164] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.251978] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 25.257135] RIP: 0033:0x4548b9 [ 25.260293] RSP: 002b:0000000000a3e968 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 25.267970] RAX: ffffffffffffffda RBX: 000000000197f914 RCX: 00000000004548b9 [ 25.275209] RDX: 0000000000000020 RSI: 0000000020000280 RDI: 0000000000000003 [ 25.282446] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 [ 25.289683] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 25.296921] R13: 00000000000003eb R14: 00000000006f7ea8 R15: 0000000000000034 [ 25.304165] Code: 00 00 48 89 f8 48 c1 e8 03 42 80 3c 30 00 0f 85 99 00 00 00 4f 8b a4 e5 f0 09 00 00 49 8d bc 24 88 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 88 00 00 00 49 8b bc 24 88 00 00 00 e8 77 [ 25.323242] RIP: __mem_cgroup_free+0x71/0x110 RSP: ffff8801b60075a8 [ 25.329680] ---[ end trace d403055db59e7c54 ]--- [ 25.334448] Kernel panic - not syncing: Fatal exception [ 25.340171] Dumping ftrace buffer: [ 25.343683] (ftrace buffer empty) [ 25.347363] Kernel Offset: disabled [ 25.350966] Rebooting in 86400 seconds..