[info] Using makefile-style concurrent boot in runlevel 2. [ 23.583001] audit: type=1800 audit(1537946741.787:21): pid=5177 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 23.610985] audit: type=1800 audit(1537946741.797:22): pid=5177 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 '10.128.0.46' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 38.651786] kauditd_printk_skb: 8 callbacks suppressed [ 38.651800] audit: type=1400 audit(1537946756.857:31): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5335 comm="syz-executor017" [ 38.676654] audit: type=1400 audit(1537946756.887:32): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5336 comm="syz-executor017" executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 38.695921] audit: type=1400 audit(1537946756.907:33): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5337 comm="syz-executor017" [ 38.713286] audit: type=1400 audit(1537946756.907:34): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5338 comm="syz-executor017" [ 38.731599] audit: type=1400 audit(1537946756.907:35): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5339 comm="syz-executor017" executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 38.749394] audit: type=1400 audit(1537946756.907:36): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5340 comm="syz-executor017" [ 38.766754] audit: type=1400 audit(1537946756.907:37): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5341 comm="syz-executor017" [ 38.785112] audit: type=1400 audit(1537946756.927:38): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5342 comm="syz-executor017" executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 38.802480] audit: type=1400 audit(1537946756.927:39): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5343 comm="syz-executor017" [ 38.819839] audit: type=1400 audit(1537946756.927:40): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5344 comm="syz-executor017" executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 39.188867] ================================================================== [ 39.196320] BUG: KASAN: stack-out-of-bounds in memcmp+0xe3/0x160 [ 39.202449] Read of size 1 at addr ffff8801badb73b0 by task syz-executor017/5498 [ 39.209957] [ 39.211571] CPU: 0 PID: 5498 Comm: syz-executor017 Not tainted 4.19.0-rc5+ #157 [ 39.218996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.228336] Call Trace: [ 39.230925] dump_stack+0x1c4/0x2b4 [ 39.234542] ? dump_stack_print_info.cold.2+0x52/0x52 [ 39.239717] ? printk+0xa7/0xcf [ 39.243011] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 39.247766] print_address_description.cold.8+0x9/0x1ff [ 39.253138] kasan_report.cold.9+0x242/0x309 [ 39.257550] ? memcmp+0xe3/0x160 [ 39.260908] __asan_report_load1_noabort+0x14/0x20 [ 39.265823] memcmp+0xe3/0x160 [ 39.269002] strnstr+0x4b/0x70 [ 39.272184] __aa_lookupn_ns+0xc1/0x570 [ 39.276187] ? aa_find_ns+0x30/0x30 [ 39.279812] ? lock_acquire+0x1ed/0x520 [ 39.283772] ? __aa_lookupn_ns+0x570/0x570 [ 39.287997] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.293518] ? check_preemption_disabled+0x48/0x200 [ 39.298521] ? kasan_check_read+0x11/0x20 [ 39.302657] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 39.307919] ? rcu_bh_qs+0xc0/0xc0 [ 39.311447] ? print_usage_bug+0xc0/0xc0 [ 39.315497] aa_lookupn_ns+0x88/0x1e0 [ 39.319286] aa_fqlookupn_profile+0x1b9/0x1010 [ 39.323874] ? aa_lookup_profile+0x30/0x30 [ 39.328105] ? __lock_acquire+0x7ec/0x4ec0 [ 39.332324] ? noop_count+0x40/0x40 [ 39.335941] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.341467] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 39.346923] ? refcount_add_not_zero_checked+0x330/0x330 [ 39.352359] ? mark_held_locks+0x130/0x130 [ 39.356583] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.362121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 39.367669] fqlookupn_profile+0x80/0xc0 [ 39.371724] aa_label_strn_parse+0xa3a/0x1230 [ 39.376219] ? aa_label_printk+0x850/0x850 [ 39.380441] ? graph_lock+0x170/0x170 [ 39.384227] ? lockdep_on+0x50/0x50 [ 39.387841] ? graph_lock+0x170/0x170 [ 39.391633] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.397170] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 39.402616] ? refcount_add_not_zero_checked+0x330/0x330 [ 39.408053] ? graph_lock+0x170/0x170 [ 39.411840] ? find_held_lock+0x36/0x1c0 [ 39.415889] aa_label_parse+0x42/0x50 [ 39.419676] aa_change_profile+0x513/0x3510 [ 39.424002] ? lock_acquire+0x1ed/0x520 [ 39.427983] ? aa_change_hat+0x1a20/0x1a20 [ 39.432207] ? is_bpf_text_address+0xd3/0x170 [ 39.436694] ? __mutex_lock+0x85e/0x1700 [ 39.440750] ? proc_pid_attr_write+0x28a/0x540 [ 39.445324] ? mutex_trylock+0x2b0/0x2b0 [ 39.449384] ? save_stack+0xa9/0xd0 [ 39.453001] ? save_stack+0x43/0xd0 [ 39.456612] ? kasan_kmalloc+0xc7/0xe0 [ 39.460484] ? __kmalloc_track_caller+0x14a/0x750 [ 39.465309] ? memdup_user+0x2c/0xa0 [ 39.469004] ? proc_pid_attr_write+0x198/0x540 [ 39.473570] ? graph_lock+0x170/0x170 [ 39.477356] ? __ia32_sys_write+0x71/0xb0 [ 39.481489] ? graph_lock+0x170/0x170 [ 39.485273] ? mark_held_locks+0x130/0x130 [ 39.489522] apparmor_setprocattr+0xaa4/0x1150 [ 39.494105] ? apparmor_task_kill+0xcb0/0xcb0 [ 39.498599] ? lock_downgrade+0x900/0x900 [ 39.502735] ? arch_local_save_flags+0x40/0x40 [ 39.507331] security_setprocattr+0x66/0xc0 [ 39.511644] proc_pid_attr_write+0x301/0x540 [ 39.516053] __vfs_write+0x119/0x9f0 [ 39.519760] ? check_preemption_disabled+0x48/0x200 [ 39.524772] ? proc_loginuid_write+0x4f0/0x4f0 [ 39.529343] ? kernel_read+0x120/0x120 [ 39.533222] ? __lock_is_held+0xb5/0x140 [ 39.537287] ? rcu_read_lock_sched_held+0x108/0x120 [ 39.542298] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.547836] ? __sb_start_write+0x1b2/0x370 [ 39.552145] vfs_write+0x1fc/0x560 [ 39.555674] ksys_write+0x101/0x260 [ 39.559292] ? __ia32_sys_read+0xb0/0xb0 [ 39.563360] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 39.568805] __ia32_sys_write+0x71/0xb0 [ 39.572794] do_fast_syscall_32+0x34d/0xfb2 [ 39.577117] ? do_int80_syscall_32+0x890/0x890 [ 39.581694] ? entry_SYSENTER_compat+0x68/0x7f [ 39.586269] ? trace_hardirqs_off_caller+0xbb/0x310 [ 39.591272] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.596109] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.600949] ? trace_hardirqs_on_caller+0x310/0x310 [ 39.605953] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 39.610968] ? prepare_exit_to_usermode+0x291/0x3b0 [ 39.615990] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.620825] entry_SYSENTER_compat+0x70/0x7f [ 39.625218] RIP: 0023:0xf7f0fca9 [ 39.628571] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 0c 24 c3 8b 1c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 39.647456] RSP: 002b:00000000ffba65ec EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 39.655148] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000040 [ 39.662399] RDX: 0000000000000009 RSI: 00000000ffba6734 RDI: 00000000ffba673c [ 39.669651] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 39.676905] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 39.684162] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 39.691423] [ 39.693031] The buggy address belongs to the page: [ 39.697945] page:ffffea0006eb6dc0 count:0 mapcount:0 mapping:0000000000000000 index:0x0 [ 39.706068] flags: 0x2fffc0000000000() [ 39.709943] raw: 02fffc0000000000 0000000000000000 ffffffff06eb0101 0000000000000000 [ 39.717813] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 39.725671] page dumped because: kasan: bad access detected [ 39.731358] [ 39.732965] Memory state around the buggy address: [ 39.737876] ffff8801badb7280: f2 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00 00 00 00 [ 39.745219] ffff8801badb7300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 39.752560] >ffff8801badb7380: 00 00 00 00 00 f1 f1 f1 f1 f8 f2 f2 f2 f2 f2 f2 [ 39.759898] ^ [ 39.764810] ffff8801badb7400: f2 00 f2 f2 f2 f2 f2 f2 f2 f8 f2 f2 f2 f2 f2 f2 [ 39.772153] ffff8801badb7480: f2 00 f2 f2 f2 f2 f2 f2 f2 00 00 00 00 00 00 00 [ 39.779495] ================================================================== [ 39.786845] Disabling lock debugging due to kernel taint [ 39.792944] Kernel panic - not syncing: panic_on_warn set ... [ 39.792944] [ 39.800320] CPU: 0 PID: 5498 Comm: syz-executor017 Tainted: G B 4.19.0-rc5+ #157 [ 39.809156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.818508] Call Trace: [ 39.821082] dump_stack+0x1c4/0x2b4 [ 39.824710] ? dump_stack_print_info.cold.2+0x52/0x52 [ 39.829885] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.834626] panic+0x238/0x4e7 [ 39.837803] ? add_taint.cold.5+0x16/0x16 [ 39.841935] ? preempt_schedule+0x4d/0x60 [ 39.846065] ? ___preempt_schedule+0x16/0x18 [ 39.850460] ? trace_hardirqs_on+0xb4/0x310 [ 39.854772] kasan_end_report+0x47/0x4f [ 39.859028] kasan_report.cold.9+0x76/0x309 [ 39.863335] ? memcmp+0xe3/0x160 [ 39.866686] __asan_report_load1_noabort+0x14/0x20 [ 39.871596] memcmp+0xe3/0x160 [ 39.874772] strnstr+0x4b/0x70 [ 39.877958] __aa_lookupn_ns+0xc1/0x570 [ 39.881930] ? aa_find_ns+0x30/0x30 [ 39.885539] ? lock_acquire+0x1ed/0x520 [ 39.889497] ? __aa_lookupn_ns+0x570/0x570 [ 39.893735] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.899265] ? check_preemption_disabled+0x48/0x200 [ 39.904279] ? kasan_check_read+0x11/0x20 [ 39.908425] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 39.913683] ? rcu_bh_qs+0xc0/0xc0 [ 39.917225] ? print_usage_bug+0xc0/0xc0 [ 39.921291] aa_lookupn_ns+0x88/0x1e0 [ 39.925083] aa_fqlookupn_profile+0x1b9/0x1010 [ 39.929664] ? aa_lookup_profile+0x30/0x30 [ 39.933887] ? __lock_acquire+0x7ec/0x4ec0 [ 39.938113] ? noop_count+0x40/0x40 [ 39.941725] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.947254] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 39.952689] ? refcount_add_not_zero_checked+0x330/0x330 [ 39.958121] ? mark_held_locks+0x130/0x130 [ 39.962339] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.967870] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 39.973403] fqlookupn_profile+0x80/0xc0 [ 39.977447] aa_label_strn_parse+0xa3a/0x1230 [ 39.981943] ? aa_label_printk+0x850/0x850 [ 39.986161] ? graph_lock+0x170/0x170 [ 39.989960] ? lockdep_on+0x50/0x50 [ 39.993572] ? graph_lock+0x170/0x170 [ 39.997359] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.002905] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 40.008356] ? refcount_add_not_zero_checked+0x330/0x330 [ 40.013806] ? graph_lock+0x170/0x170 [ 40.017589] ? find_held_lock+0x36/0x1c0 [ 40.021635] aa_label_parse+0x42/0x50 [ 40.025431] aa_change_profile+0x513/0x3510 [ 40.029749] ? lock_acquire+0x1ed/0x520 [ 40.033711] ? aa_change_hat+0x1a20/0x1a20 [ 40.037948] ? is_bpf_text_address+0xd3/0x170 [ 40.042453] ? __mutex_lock+0x85e/0x1700 [ 40.046498] ? proc_pid_attr_write+0x28a/0x540 [ 40.051063] ? mutex_trylock+0x2b0/0x2b0 [ 40.055107] ? save_stack+0xa9/0xd0 [ 40.058714] ? save_stack+0x43/0xd0 [ 40.062339] ? kasan_kmalloc+0xc7/0xe0 [ 40.066211] ? __kmalloc_track_caller+0x14a/0x750 [ 40.071037] ? memdup_user+0x2c/0xa0 [ 40.074732] ? proc_pid_attr_write+0x198/0x540 [ 40.079307] ? graph_lock+0x170/0x170 [ 40.083090] ? __ia32_sys_write+0x71/0xb0 [ 40.087221] ? graph_lock+0x170/0x170 [ 40.091003] ? mark_held_locks+0x130/0x130 [ 40.095226] apparmor_setprocattr+0xaa4/0x1150 [ 40.099798] ? apparmor_task_kill+0xcb0/0xcb0 [ 40.104278] ? lock_downgrade+0x900/0x900 [ 40.108414] ? arch_local_save_flags+0x40/0x40 [ 40.112985] security_setprocattr+0x66/0xc0 [ 40.117296] proc_pid_attr_write+0x301/0x540 [ 40.121690] __vfs_write+0x119/0x9f0 [ 40.125385] ? check_preemption_disabled+0x48/0x200 [ 40.130384] ? proc_loginuid_write+0x4f0/0x4f0 [ 40.134950] ? kernel_read+0x120/0x120 [ 40.138836] ? __lock_is_held+0xb5/0x140 [ 40.142883] ? rcu_read_lock_sched_held+0x108/0x120 [ 40.147901] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.153423] ? __sb_start_write+0x1b2/0x370 [ 40.157729] vfs_write+0x1fc/0x560 [ 40.161262] ksys_write+0x101/0x260 [ 40.164874] ? __ia32_sys_read+0xb0/0xb0 [ 40.168918] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 40.174351] __ia32_sys_write+0x71/0xb0 [ 40.178327] do_fast_syscall_32+0x34d/0xfb2 [ 40.182636] ? do_int80_syscall_32+0x890/0x890 [ 40.187203] ? entry_SYSENTER_compat+0x68/0x7f [ 40.191768] ? trace_hardirqs_off_caller+0xbb/0x310 [ 40.196773] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.201603] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.206431] ? trace_hardirqs_on_caller+0x310/0x310 [ 40.211431] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 40.216432] ? prepare_exit_to_usermode+0x291/0x3b0 [ 40.221434] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.226260] entry_SYSENTER_compat+0x70/0x7f [ 40.230649] RIP: 0023:0xf7f0fca9 [ 40.234000] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 0c 24 c3 8b 1c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 40.252889] RSP: 002b:00000000ffba65ec EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 40.260598] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000040 [ 40.267851] RDX: 0000000000000009 RSI: 00000000ffba6734 RDI: 00000000ffba673c [ 40.275100] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 40.282365] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.289617] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 40.297867] Kernel Offset: disabled [ 40.301491] Rebooting in 86400 seconds..