[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 34.405477] audit: type=1800 audit(1538715961.919:25): pid=5628 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 34.425778] audit: type=1800 audit(1538715961.919:26): pid=5628 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 34.462729] audit: type=1800 audit(1538715961.919:27): pid=5628 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 47.690224] kasan: CONFIG_KASAN_INLINE enabled [ 47.697904] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.703296] kasan: CONFIG_KASAN_INLINE enabled [ 47.714917] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 47.715199] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.721195] CPU: 0 PID: 5796 Comm: syz-executor778 Not tainted 4.19.0-rc6+ #267 [ 47.721203] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.721225] RIP: 0010:memcmp+0x28/0x160 [ 47.721239] 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 [ 47.721246] RSP: 0018:ffff8801d7df6f98 EFLAGS: 00010292 [ 47.721258] RAX: dffffc0000000000 RBX: 0e0224efc0ca8e00 RCX: 01c0449df81951c0 [ 47.721271] RDX: 0000000000000002 RSI: ffffffff883ba540 RDI: 0e0224efc0ca8e00 [ 47.788136] RBP: ffff8801d7df6fc0 R08: ffff8801d78243c0 R09: 0000000000000000 [ 47.795405] R10: ffffed003afbee5a R11: 0000000000000000 R12: 0000000000000002 [ 47.802674] R13: ffffffff883ba540 R14: 0e01acf198aa0150 R15: dffffc0000000000 [ 47.809941] FS: 000000000113b880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 47.818160] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.824036] CR2: 0000000000414ad0 CR3: 00000001bcf11000 CR4: 00000000001406f0 [ 47.831307] Call Trace: [ 47.833912] ? select_task_rq_fair+0x34f0/0x34f0 [ 47.838679] strnstr+0x4b/0x70 [ 47.841886] __aa_lookupn_ns+0xc1/0x570 [ 47.845874] ? aa_find_ns+0x30/0x30 [ 47.849505] ? lock_acquire+0x1ed/0x520 [ 47.853478] ? __aa_lookupn_ns+0x570/0x570 [ 47.857715] ? __lru_cache_add+0x2ff/0x4e0 [ 47.861955] ? lock_release+0x970/0x970 [ 47.865933] ? mark_held_locks+0x130/0x130 [ 47.870170] ? trace_hardirqs_off+0xb8/0x310 [ 47.874577] ? do_raw_spin_lock+0xc1/0x200 [ 47.878820] aa_lookupn_ns+0x88/0x1e0 [ 47.882649] aa_fqlookupn_profile+0x1b9/0x1010 [ 47.887245] ? kasan_check_read+0x11/0x20 [ 47.891407] ? finish_task_switch+0x1f5/0x900 [ 47.895904] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 47.901359] ? aa_lookup_profile+0x30/0x30 [ 47.905599] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.911152] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.916716] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 47.922173] ? refcount_add_not_zero_checked+0x330/0x330 [ 47.927635] ? mark_held_locks+0x130/0x130 [ 47.931874] ? __switch_to_asm+0x34/0x70 [ 47.935931] ? __switch_to_asm+0x40/0x70 [ 47.940008] ? __switch_to_asm+0x34/0x70 [ 47.944072] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.949621] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 47.955165] fqlookupn_profile+0x80/0xc0 [ 47.959231] aa_label_strn_parse+0xa3a/0x1230 [ 47.963742] ? aa_label_printk+0x850/0x850 [ 47.967980] ? mem_cgroup_commit_charge+0x275/0x9d0 [ 47.973001] ? mem_cgroup_uncharge_swap+0x1a0/0x1a0 [ 47.978022] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.983560] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 47.989011] ? refcount_add_not_zero_checked+0x330/0x330 [ 47.994472] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 47.999484] ? bpf_prog_kallsyms_find+0xde/0x4a0 [ 48.004239] aa_label_parse+0x42/0x50 [ 48.008039] aa_change_profile+0x513/0x3260 [ 48.012359] ? lock_acquire+0x1ed/0x520 [ 48.016331] ? aa_change_hat+0x1890/0x1890 [ 48.020563] ? is_bpf_text_address+0xd3/0x170 [ 48.025064] ? __mutex_lock+0x85e/0x1700 [ 48.029123] ? proc_pid_attr_write+0x28a/0x540 [ 48.033722] ? mutex_trylock+0x2b0/0x2b0 [ 48.037784] ? save_stack+0xa9/0xd0 [ 48.041406] ? save_stack+0x43/0xd0 [ 48.045038] ? kasan_kmalloc+0xc7/0xe0 [ 48.048942] ? __kmalloc_track_caller+0x14a/0x750 [ 48.053780] ? memdup_user+0x2c/0xa0 [ 48.057487] ? proc_pid_attr_write+0x198/0x540 [ 48.062350] ? __vfs_write+0x119/0x9f0 [ 48.066236] ? vfs_write+0x1fc/0x560 [ 48.069958] ? ksys_write+0x101/0x260 [ 48.073757] ? __x64_sys_write+0x73/0xb0 [ 48.077814] ? do_syscall_64+0x1b9/0x820 [ 48.081873] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.087240] ? mark_held_locks+0x130/0x130 [ 48.091472] apparmor_setprocattr+0xa8b/0x1150 [ 48.096051] ? apparmor_task_kill+0xcb0/0xcb0 [ 48.100541] ? lock_downgrade+0x900/0x900 [ 48.104688] ? arch_local_save_flags+0x40/0x40 [ 48.109280] security_setprocattr+0x66/0xc0 [ 48.113596] proc_pid_attr_write+0x301/0x540 [ 48.118003] __vfs_write+0x119/0x9f0 [ 48.121712] ? proc_loginuid_write+0x4f0/0x4f0 [ 48.126302] ? kernel_read+0x120/0x120 [ 48.130223] ? lock_release+0x970/0x970 [ 48.134196] ? arch_local_save_flags+0x40/0x40 [ 48.138778] ? check_preemption_disabled+0x48/0x200 [ 48.143799] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.149329] ? check_preemption_disabled+0x48/0x200 [ 48.154346] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.159889] ? __sb_start_write+0x1b2/0x370 [ 48.164206] vfs_write+0x1fc/0x560 [ 48.167741] ksys_write+0x101/0x260 [ 48.171365] ? __ia32_sys_read+0xb0/0xb0 [ 48.175423] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 48.180878] __x64_sys_write+0x73/0xb0 [ 48.184784] do_syscall_64+0x1b9/0x820 [ 48.188682] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 48.194042] ? syscall_return_slowpath+0x5e0/0x5e0 [ 48.198998] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.203838] ? trace_hardirqs_on_caller+0x310/0x310 [ 48.208903] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 48.213919] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.219462] ? prepare_exit_to_usermode+0x291/0x3b0 [ 48.224473] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.229312] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.234498] RIP: 0033:0x440e59 [ 48.237685] Code: e8 ac e8 ff ff 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 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 48.256590] RSP: 002b:00007ffd408c7938 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 [ 48.264297] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440e59 [ 48.271572] RDX: 0000000000000008 RSI: 0000000020000000 RDI: 0000000000000003 [ 48.278853] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 48.286109] R10: 000000000113b880 R11: 0000000000000213 R12: 000000000000ba21 [ 48.293368] R13: 0000000000401d80 R14: 0000000000000000 R15: 0000000000000000 [ 48.300648] Modules linked in: [ 48.303857] general protection fault: 0000 [#2] PREEMPT SMP KASAN [ 48.310111] CPU: 1 PID: 5804 Comm: syz-executor778 Tainted: G D 4.19.0-rc6+ #267 [ 48.313080] ---[ end trace 11bbf4ff7fba65bf ]--- [ 48.318935] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.318953] RIP: 0010:memcmp+0x28/0x160 [ 48.318972] 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 [ 48.323784] RIP: 0010:memcmp+0x28/0x160 [ 48.333050] RSP: 0018:ffff8801bac1ef98 EFLAGS: 00010292 [ 48.333063] RAX: dffffc0000000000 RBX: 1ffff10037583e4d RCX: 03fffe2006eb07c9 [ 48.333070] RDX: 0000000000000002 RSI: ffffffff883ba540 RDI: 1ffff10037583e4d [ 48.333077] RBP: ffff8801bac1efc0 R08: ffff8801d79065c0 R09: 0000000000000000 [ 48.333084] R10: ffffed0037583e5a R11: 0000000000000000 R12: 0000000000000002 [ 48.333097] R13: ffffffff883ba540 R14: 1fff7901f21a319d R15: dffffc0000000000 [ 48.337264] 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 [ 48.355964] FS: 000000000113b880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 48.355973] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.355982] CR2: 0000000000414ad0 CR3: 00000001c57c1000 CR4: 00000000001406e0 [ 48.355990] Call Trace: [ 48.356012] ? __account_cfs_rq_runtime+0x790/0x790 [ 48.360168] RSP: 0018:ffff8801d7df6f98 EFLAGS: 00010292 [ 48.365371] strnstr+0x4b/0x70 [ 48.365389] __aa_lookupn_ns+0xc1/0x570 [ 48.365408] ? debug_smp_processor_id+0x1c/0x20 [ 48.380050] ? aa_find_ns+0x30/0x30 [ 48.380060] ? lock_acquire+0x1ed/0x520 [ 48.380067] ? __aa_lookupn_ns+0x570/0x570 [ 48.380076] ? lock_release+0x970/0x970 [ 48.380087] ? pick_next_task_fair+0x98e/0x17c0 [ 48.387460] RAX: dffffc0000000000 RBX: 0e0224efc0ca8e00 RCX: 01c0449df81951c0 [ 48.394647] ? lock_downgrade+0x900/0x900 [ 48.394657] ? do_raw_spin_lock+0xc1/0x200 [ 48.394667] aa_lookupn_ns+0x88/0x1e0 [ 48.394678] aa_fqlookupn_profile+0x1b9/0x1010 [ 48.402019] RDX: 0000000000000002 RSI: ffffffff883ba540 RDI: 0e0224efc0ca8e00 [ 48.420825] ? finish_task_switch+0x1f5/0x900 [ 48.420841] ? aa_lookup_profile+0x30/0x30 [ 48.420856] ? trace_hardirqs_on+0xbd/0x310 [ 48.420872] ? kasan_check_read+0x11/0x20 [ 48.429176] RBP: ffff8801d7df6fc0 R08: ffff8801d78243c0 R09: 0000000000000000 [ 48.435064] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.435079] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 48.435094] ? refcount_add_not_zero_checked+0x330/0x330 [ 48.435112] ? mark_held_locks+0x130/0x130 [ 48.442573] R10: ffffed003afbee5a R11: 0000000000000000 R12: 0000000000000002 [ 48.444983] ? _raw_spin_unlock_irq+0x60/0x80 [ 48.444998] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.445017] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 48.450165] R13: ffffffff883ba540 R14: 0e01acf198aa0150 R15: dffffc0000000000 [ 48.455376] fqlookupn_profile+0x80/0xc0 [ 48.455393] aa_label_strn_parse+0xa3a/0x1230 [ 48.455409] ? __switch_to_asm+0x40/0x70 [ 48.458647] FS: 000000000113b880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 48.462579] ? aa_label_printk+0x850/0x850 [ 48.462595] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 48.462634] ? __rcu_read_unlock+0x2e5/0x2f0 [ 48.462652] ? rcu_sched_force_quiescent_state+0x20/0x20 [ 48.467461] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.470922] ? kasan_check_write+0x14/0x20 [ 48.470939] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 48.470954] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.470971] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 48.475047] CR2: 00007ffd408c7944 CR3: 00000001bcf11000 CR4: 00000000001406f0 [ 48.479154] ? refcount_add_not_zero_checked+0x330/0x330 [ 48.479169] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 48.479196] ? bpf_prog_kallsyms_find+0xde/0x4a0 [ 48.483293] Kernel panic - not syncing: Fatal exception [ 48.487811] aa_label_parse+0x42/0x50 [ 48.692131] aa_change_profile+0x513/0x3260 [ 48.696456] ? lock_acquire+0x1ed/0x520 [ 48.700430] ? aa_change_hat+0x1890/0x1890 [ 48.704673] ? is_bpf_text_address+0xd3/0x170 [ 48.709192] ? __mutex_lock+0x85e/0x1700 [ 48.713250] ? proc_pid_attr_write+0x28a/0x540 [ 48.717831] ? mutex_trylock+0x2b0/0x2b0 [ 48.721885] ? save_stack+0xa9/0xd0 [ 48.725503] ? save_stack+0x43/0xd0 [ 48.729122] ? kasan_kmalloc+0xc7/0xe0 [ 48.733030] ? __kmalloc_track_caller+0x14a/0x750 [ 48.737882] ? memdup_user+0x2c/0xa0 [ 48.741593] ? proc_pid_attr_write+0x198/0x540 [ 48.746184] ? __vfs_write+0x119/0x9f0 [ 48.750084] ? vfs_write+0x1fc/0x560 [ 48.753795] ? ksys_write+0x101/0x260 [ 48.757596] ? __x64_sys_write+0x73/0xb0 [ 48.761668] ? do_syscall_64+0x1b9/0x820 [ 48.765731] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.771103] ? mark_held_locks+0x130/0x130 [ 48.775393] apparmor_setprocattr+0xa8b/0x1150 [ 48.779990] ? apparmor_task_kill+0xcb0/0xcb0 [ 48.784486] ? lock_downgrade+0x900/0x900 [ 48.788640] ? arch_local_save_flags+0x40/0x40 [ 48.793235] security_setprocattr+0x66/0xc0 [ 48.797559] proc_pid_attr_write+0x301/0x540 [ 48.801988] __vfs_write+0x119/0x9f0 [ 48.805742] ? proc_loginuid_write+0x4f0/0x4f0 [ 48.810334] ? kernel_read+0x120/0x120 [ 48.814221] ? lock_release+0x970/0x970 [ 48.818194] ? arch_local_save_flags+0x40/0x40 [ 48.822777] ? check_preemption_disabled+0x48/0x200 [ 48.827795] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.833341] ? check_preemption_disabled+0x48/0x200 [ 48.838358] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.843893] ? __sb_start_write+0x1b2/0x370 [ 48.848228] vfs_write+0x1fc/0x560 [ 48.851774] ksys_write+0x101/0x260 [ 48.855400] ? __ia32_sys_read+0xb0/0xb0 [ 48.859462] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 48.865192] __x64_sys_write+0x73/0xb0 [ 48.869083] do_syscall_64+0x1b9/0x820 [ 48.872969] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 48.878330] ? syscall_return_slowpath+0x5e0/0x5e0 [ 48.883258] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.888107] ? trace_hardirqs_on_caller+0x310/0x310 [ 48.893119] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 48.898143] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.903688] ? prepare_exit_to_usermode+0x291/0x3b0 [ 48.908716] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.913556] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.918738] RIP: 0033:0x440e59 [ 48.921959] Code: e8 ac e8 ff ff 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 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 48.940879] RSP: 002b:00007ffd408c7938 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 [ 48.948585] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440e59 [ 48.955856] RDX: 0000000000000008 RSI: 0000000020000000 RDI: 0000000000000003 [ 48.963116] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 48.970378] R10: 000000000113b880 R11: 0000000000000213 R12: 000000000000ba2a [ 48.977667] R13: 0000000000401d80 R14: 0000000000000000 R15: 0000000000000000 [ 48.984959] Modules linked in: [ 48.989090] Kernel Offset: disabled [ 48.992714] Rebooting in 86400 seconds..