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 '10.128.0.44' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 36.321075] audit: type=1400 audit(1537815184.802:2): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5552 comm="syz-executor398" [ 36.350910] audit: type=1400 audit(1537815184.832:3): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5553 comm="syz-executor398" executing program executing program [ 36.381594] audit: type=1400 audit(1537815184.862:4): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5554 comm="syz-executor398" [ 36.412399] audit: type=1400 audit(1537815184.892:5): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5555 comm="syz-executor398" executing program executing program [ 36.443377] audit: type=1400 audit(1537815184.922:6): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5556 comm="syz-executor398" [ 36.473968] audit: type=1400 audit(1537815184.952:7): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5557 comm="syz-executor398" executing program executing program [ 36.504796] audit: type=1400 audit(1537815184.982:8): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5558 comm="syz-executor398" [ 36.535312] audit: type=1400 audit(1537815185.012:9): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5559 comm="syz-executor398" executing program executing program executing program executing program [ 36.565457] audit: type=1400 audit(1537815185.042:10): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5560 comm="syz-executor398" [ 36.596491] audit: type=1400 audit(1537815185.072:11): apparmor="DENIED" operation="stack_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5561 comm="syz-executor398" executing program [ 36.660922] kasan: CONFIG_KASAN_INLINE enabled [ 36.665651] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.673115] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.679349] CPU: 0 PID: 5565 Comm: syz-executor398 Not tainted 4.19.0-rc5-next-20180924+ #78 [ 36.687908] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.697252] RIP: 0010:memcmp+0x28/0x160 [ 36.701228] Code: 00 00 48 85 d2 0f 84 0a 01 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 f9 48 89 e5 48 c1 e9 03 41 54 53 48 89 fb 48 83 ec 18 <0f> b6 04 01 48 89 f9 83 e1 07 38 c8 7f 08 84 c0 0f 85 98 00 00 00 [ 36.720113] RSP: 0018:ffff8801bbf0ef98 EFLAGS: 00010292 [ 36.725459] RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: 000000000836b156 [ 36.732719] RDX: 0000000000000002 RSI: ffffffff885fb8e0 RDI: 0000000041b58ab3 [ 36.739979] RBP: ffff8801bbf0efc0 R08: ffff8801d8628280 R09: ffffed003b585b57 [ 36.747233] R10: ffffed003b585b57 R11: ffff8801dac2dabb R12: 0000000000000002 [ 36.754490] R13: ffffffff885fb8e0 R14: ffff8801fda67e03 R15: dffffc0000000000 [ 36.761743] FS: 0000000000bf8880(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 36.769963] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.775839] CR2: 00000000006cb090 CR3: 00000001d884a000 CR4: 00000000001406f0 [ 36.783099] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.790580] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.797831] Call Trace: [ 36.800406] strnstr+0x4b/0x70 [ 36.803588] __aa_lookupn_ns+0xc1/0x570 [ 36.807548] ? free_one_page+0xcae/0x1700 [ 36.811679] ? aa_find_ns+0x30/0x30 [ 36.815291] ? lock_acquire+0x1ed/0x520 [ 36.819250] ? __aa_lookupn_ns+0x570/0x570 [ 36.823471] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.828995] ? check_preemption_disabled+0x48/0x200 [ 36.834001] ? kasan_check_read+0x11/0x20 [ 36.838137] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 36.843405] ? __this_cpu_preempt_check+0x1c/0x1f [ 36.848235] ? rcu_softirq_qs+0x20/0x20 [ 36.852197] ? print_usage_bug+0xc0/0xc0 [ 36.856243] ? _raw_spin_unlock+0x2c/0x50 [ 36.860379] aa_lookupn_ns+0x88/0x1e0 [ 36.864168] aa_fqlookupn_profile+0x1b9/0x1010 [ 36.868738] ? aa_lookup_profile+0x30/0x30 [ 36.872963] ? __lock_acquire+0x7ec/0x4ec0 [ 36.877185] ? trace_hardirqs_on_caller+0x310/0x310 [ 36.882190] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.887730] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 36.893166] ? refcount_add_not_zero_checked+0x330/0x330 [ 36.898599] ? mark_held_locks+0x130/0x130 [ 36.902820] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.908340] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.913865] fqlookupn_profile+0x80/0xc0 [ 36.917913] aa_label_strn_parse+0xa3a/0x1230 [ 36.922393] ? aa_label_printk+0x850/0x850 [ 36.926620] ? free_one_page+0x1700/0x1700 [ 36.930855] ? __lock_acquire+0x7ec/0x4ec0 [ 36.935074] ? lockdep_on+0x50/0x50 [ 36.938694] ? graph_lock+0x170/0x170 [ 36.942483] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.948005] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 36.953439] ? refcount_add_not_zero_checked+0x330/0x330 [ 36.958878] ? graph_lock+0x170/0x170 [ 36.962673] ? find_held_lock+0x36/0x1c0 [ 36.966741] aa_label_parse+0x42/0x50 [ 36.970531] aa_change_profile+0x513/0x3510 [ 36.974848] ? lock_acquire+0x1ed/0x520 [ 36.978810] ? aa_change_hat+0x1a20/0x1a20 [ 36.983029] ? is_bpf_text_address+0xd3/0x170 [ 36.987513] ? __mutex_lock+0x85e/0x1700 [ 36.991561] ? proc_pid_attr_write+0x28a/0x540 [ 36.996128] ? mutex_trylock+0x2b0/0x2b0 [ 37.000173] ? save_stack+0xa9/0xd0 [ 37.003784] ? save_stack+0x43/0xd0 [ 37.007395] ? kasan_kmalloc+0xc7/0xe0 [ 37.011262] ? __kmalloc_track_caller+0x14a/0x750 [ 37.016086] ? memdup_user+0x2c/0xa0 [ 37.019791] ? proc_pid_attr_write+0x198/0x540 [ 37.024363] ? graph_lock+0x170/0x170 [ 37.028144] ? __x64_sys_write+0x73/0xb0 [ 37.032190] ? graph_lock+0x170/0x170 [ 37.035977] apparmor_setprocattr+0xab7/0x1180 [ 37.040552] ? apparmor_task_kill+0xcb0/0xcb0 [ 37.045063] ? lock_downgrade+0x900/0x900 [ 37.049198] ? ttwu_stat+0x5c0/0x5c0 [ 37.052904] security_setprocattr+0x66/0xc0 [ 37.057215] proc_pid_attr_write+0x301/0x540 [ 37.061609] __vfs_write+0x119/0x9f0 [ 37.065311] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.070836] ? proc_loginuid_write+0x4f0/0x4f0 [ 37.075406] ? kernel_read+0x120/0x120 [ 37.079284] ? __lock_is_held+0xb5/0x140 [ 37.083340] ? rcu_read_lock_sched_held+0x108/0x120 [ 37.088361] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.093883] ? __sb_start_write+0x1b2/0x370 [ 37.098190] vfs_write+0x1fc/0x560 [ 37.101720] ksys_write+0x101/0x260 [ 37.105346] ? __ia32_sys_read+0xb0/0xb0 [ 37.109424] ? trace_hardirqs_off_caller+0x300/0x300 [ 37.114526] __x64_sys_write+0x73/0xb0 [ 37.118399] do_syscall_64+0x1b9/0x820 [ 37.122281] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 37.127626] ? syscall_return_slowpath+0x5e0/0x5e0 [ 37.132547] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.137374] ? trace_hardirqs_off+0x310/0x310 [ 37.141873] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 37.146890] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.152421] ? prepare_exit_to_usermode+0x291/0x3b0 [ 37.157424] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.162290] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.167479] RIP: 0033:0x440d49 [ 37.170702] Code: e8 cc ab 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 37.189595] RSP: 002b:00007ffcbaaf0448 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 [ 37.197298] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440d49 [ 37.204551] RDX: 0000000000000009 RSI: 0000000020000180 RDI: 0000000000000003 [ 37.211824] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 37.219078] R10: 0000000000bf8880 R11: 0000000000000213 R12: 0000000000008f07 [ 37.226347] R13: 0000000000401d20 R14: 0000000000000000 R15: 0000000000000000 [ 37.233603] Modules linked in: [ 37.237441] ---[ end trace 848eed09df759209 ]--- [ 37.242206] RIP: 0010:memcmp+0x28/0x160 [ 37.246161] Code: 00 00 48 85 d2 0f 84 0a 01 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 f9 48 89 e5 48 c1 e9 03 41 54 53 48 89 fb 48 83 ec 18 <0f> b6 04 01 48 89 f9 83 e1 07 38 c8 7f 08 84 c0 0f 85 98 00 00 00 [ 37.265094] RSP: 0018:ffff8801bbf0ef98 EFLAGS: 00010292 [ 37.270504] RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: 000000000836b156 [ 37.277797] RDX: 0000000000000002 RSI: ffffffff885fb8e0 RDI: 0000000041b58ab3 [ 37.285069] RBP: ffff8801bbf0efc0 R08: ffff8801d8628280 R09: ffffed003b585b57 [ 37.292364] R10: ffffed003b585b57 R11: ffff8801dac2dabb R12: 0000000000000002 [ 37.299661] R13: ffffffff885fb8e0 R14: ffff8801fda67e03 R15: dffffc0000000000 [ 37.306921] FS: 0000000000bf8880(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 37.315166] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.321063] CR2: 00000000006cb090 CR3: 00000001d884a000 CR4: 00000000001406f0 [ 37.328353] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.335622] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.342915] Kernel panic - not syncing: Fatal exception [ 37.349230] Kernel Offset: disabled [ 37.352856] Rebooting in 86400 seconds..