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 '10.128.0.65' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 36.367905] audit: type=1400 audit(1537822987.952:2): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5553 comm="syz-executor157" [ 36.398625] audit: type=1400 audit(1537822987.982:3): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5554 comm="syz-executor157" executing program executing program [ 36.429095] audit: type=1400 audit(1537822988.012:4): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5555 comm="syz-executor157" [ 36.460274] audit: type=1400 audit(1537822988.042:5): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5556 comm="syz-executor157" executing program executing program [ 36.490783] audit: type=1400 audit(1537822988.072:6): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5557 comm="syz-executor157" [ 36.521537] audit: type=1400 audit(1537822988.102:7): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5558 comm="syz-executor157" executing program executing program [ 36.552605] audit: type=1400 audit(1537822988.132:8): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5559 comm="syz-executor157" [ 36.583500] audit: type=1400 audit(1537822988.172:9): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5560 comm="syz-executor157" executing program executing program executing program executing program [ 36.614775] audit: type=1400 audit(1537822988.202:10): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5561 comm="syz-executor157" [ 36.646974] audit: type=1400 audit(1537822988.232:11): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=5562 comm="syz-executor157" 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 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 [ 39.147847] kasan: CONFIG_KASAN_INLINE enabled [ 39.152677] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.160169] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 39.166408] CPU: 1 PID: 5735 Comm: syz-executor157 Not tainted 4.19.0-rc5-next-20180924+ #78 [ 39.174966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.184355] RIP: 0010:memcmp+0x28/0x160 [ 39.188320] 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 [ 39.207226] RSP: 0018:ffff8801bae8ef98 EFLAGS: 00010292 [ 39.212581] RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: 000000000836b156 [ 39.219841] RDX: 0000000000000002 RSI: ffffffff885fb8e0 RDI: 0000000041b58ab3 [ 39.227126] RBP: ffff8801bae8efc0 R08: ffff8801d828c4c0 R09: ffffed003b5a5b57 [ 39.234386] R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: 0000000000000002 [ 39.241644] R13: ffffffff885fb8e0 R14: ffff8801fc9e7e03 R15: dffffc0000000000 [ 39.248915] FS: 0000000001c3d880(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 39.257131] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.263010] CR2: 00000000006cb090 CR3: 00000001d874a000 CR4: 00000000001406e0 [ 39.270294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.277567] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.284821] Call Trace: [ 39.287395] strnstr+0x4b/0x70 [ 39.290574] __aa_lookupn_ns+0xc1/0x570 [ 39.294569] ? free_one_page+0xcae/0x1700 [ 39.298705] ? aa_find_ns+0x30/0x30 [ 39.302323] ? lock_acquire+0x1ed/0x520 [ 39.306288] ? __aa_lookupn_ns+0x570/0x570 [ 39.310519] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.316068] ? check_preemption_disabled+0x48/0x200 [ 39.321085] ? kasan_check_read+0x11/0x20 [ 39.325223] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 39.330514] ? __this_cpu_preempt_check+0x1c/0x1f [ 39.335369] ? rcu_softirq_qs+0x20/0x20 [ 39.339333] ? print_usage_bug+0xc0/0xc0 [ 39.343379] ? _raw_spin_unlock+0x2c/0x50 [ 39.347517] aa_lookupn_ns+0x88/0x1e0 [ 39.351303] aa_fqlookupn_profile+0x1b9/0x1010 [ 39.355884] ? aa_lookup_profile+0x30/0x30 [ 39.360108] ? __lock_acquire+0x7ec/0x4ec0 [ 39.364329] ? trace_hardirqs_on_caller+0x310/0x310 [ 39.369334] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.374861] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 39.380316] ? refcount_add_not_zero_checked+0x330/0x330 [ 39.385766] ? mark_held_locks+0x130/0x130 [ 39.389994] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.395518] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 39.401051] fqlookupn_profile+0x80/0xc0 [ 39.405102] aa_label_strn_parse+0xa3a/0x1230 [ 39.409599] ? aa_label_printk+0x850/0x850 [ 39.413835] ? free_one_page+0x1700/0x1700 [ 39.418057] ? __lock_acquire+0x7ec/0x4ec0 [ 39.422278] ? trace_hardirqs_off+0xb8/0x310 [ 39.426671] ? graph_lock+0x170/0x170 [ 39.430459] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.436004] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 39.441441] ? refcount_add_not_zero_checked+0x330/0x330 [ 39.446892] ? graph_lock+0x170/0x170 [ 39.450678] ? find_held_lock+0x36/0x1c0 [ 39.454726] aa_label_parse+0x42/0x50 [ 39.458625] aa_change_profile+0x513/0x3510 [ 39.462936] ? lock_acquire+0x1ed/0x520 [ 39.466899] ? aa_change_hat+0x1a20/0x1a20 [ 39.471117] ? is_bpf_text_address+0xd3/0x170 [ 39.475600] ? __mutex_lock+0x85e/0x1700 [ 39.479648] ? proc_pid_attr_write+0x28a/0x540 [ 39.484216] ? mutex_trylock+0x2b0/0x2b0 [ 39.488266] ? save_stack+0xa9/0xd0 [ 39.491879] ? save_stack+0x43/0xd0 [ 39.495489] ? kasan_kmalloc+0xc7/0xe0 [ 39.499374] ? __kmalloc_track_caller+0x14a/0x750 [ 39.504200] ? memdup_user+0x2c/0xa0 [ 39.507905] ? proc_pid_attr_write+0x198/0x540 [ 39.512477] ? graph_lock+0x170/0x170 [ 39.516274] ? __x64_sys_write+0x73/0xb0 [ 39.520329] ? graph_lock+0x170/0x170 [ 39.524126] apparmor_setprocattr+0xa9e/0x1180 [ 39.528694] ? apparmor_task_kill+0xcb0/0xcb0 [ 39.533176] ? lock_downgrade+0x900/0x900 [ 39.537308] ? ttwu_stat+0x5c0/0x5c0 [ 39.541017] security_setprocattr+0x66/0xc0 [ 39.545328] proc_pid_attr_write+0x301/0x540 [ 39.549719] __vfs_write+0x119/0x9f0 [ 39.553420] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.558952] ? proc_loginuid_write+0x4f0/0x4f0 [ 39.563517] ? kernel_read+0x120/0x120 [ 39.567391] ? __lock_is_held+0xb5/0x140 [ 39.571463] ? rcu_read_lock_sched_held+0x108/0x120 [ 39.576467] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.581990] ? __sb_start_write+0x1b2/0x370 [ 39.586299] vfs_write+0x1fc/0x560 [ 39.589823] ksys_write+0x101/0x260 [ 39.593435] ? __ia32_sys_read+0xb0/0xb0 [ 39.597485] ? trace_hardirqs_off_caller+0x300/0x300 [ 39.602591] __x64_sys_write+0x73/0xb0 [ 39.606468] do_syscall_64+0x1b9/0x820 [ 39.610341] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 39.615697] ? syscall_return_slowpath+0x5e0/0x5e0 [ 39.620617] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.625443] ? trace_hardirqs_off+0x310/0x310 [ 39.629931] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 39.634938] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.640463] ? prepare_exit_to_usermode+0x291/0x3b0 [ 39.645485] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.650318] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.655493] RIP: 0033:0x440d49 [ 39.658669] 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 [ 39.677575] RSP: 002b:00007ffce76ebaa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 [ 39.685276] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440d49 [ 39.692530] RDX: 0000000000000008 RSI: 0000000020000000 RDI: 0000000000000003 [ 39.699781] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 39.707036] R10: 0000000001c3d880 R11: 0000000000000213 R12: 00000000000098c1 [ 39.714294] R13: 0000000000401d20 R14: 0000000000000000 R15: 0000000000000000 [ 39.721556] Modules linked in: [ 39.725017] ---[ end trace 54936ee33f0fc5ff ]--- [ 39.729864] RIP: 0010:memcmp+0x28/0x160 [ 39.733966] 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 [ 39.752998] RSP: 0018:ffff8801bae8ef98 EFLAGS: 00010292 [ 39.758414] RAX: dffffc0000000000 RBX: 0000000041b58ab3 RCX: 000000000836b156 [ 39.765706] RDX: 0000000000000002 RSI: ffffffff885fb8e0 RDI: 0000000041b58ab3 [ 39.772962] RBP: ffff8801bae8efc0 R08: ffff8801d828c4c0 R09: ffffed003b5a5b57 [ 39.780268] R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: 0000000000000002 [ 39.787588] R13: ffffffff885fb8e0 R14: ffff8801fc9e7e03 R15: dffffc0000000000 [ 39.794914] FS: 0000000001c3d880(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 39.803167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.809092] CR2: 00000000006cb090 CR3: 00000001d874a000 CR4: 00000000001406e0 [ 39.816388] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.823686] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.830953] Kernel panic - not syncing: Fatal exception [ 39.837332] Kernel Offset: disabled [ 39.840955] Rebooting in 86400 seconds..