[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 41.410629] audit: type=1800 audit(1546029692.971:25): pid=8064 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 41.452735] audit: type=1800 audit(1546029692.971:26): pid=8064 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.473009] audit: type=1800 audit(1546029692.981:27): pid=8064 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.0.97' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 84.512385] kasan: CONFIG_KASAN_INLINE enabled [ 84.531435] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 84.555412] general protection fault: 0000 [#1] PREEMPT SMP KASAN executing program executing program [ 84.555755] kobject: 'rfkill133' (000000005a2e83c4): kobject_uevent_env [ 84.561743] CPU: 0 PID: 8352 Comm: syz-executor616 Not tainted 4.20.0+ #172 [ 84.561750] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.561771] RIP: 0010:kernfs_add_one+0x342/0x4d0 [ 84.561784] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 49 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 70 49 8d 7d 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 16 01 00 00 45 8b 6d 08 31 ff [ 84.561792] RSP: 0018:ffff88808565f5d0 EFLAGS: 00010202 [ 84.561803] RAX: dffffc0000000000 RBX: ffff88809895d7e0 RCX: ffffffff87e92f67 [ 84.561812] RDX: 0000000000000001 RSI: ffffffff81fae6aa RDI: 0000000000000008 [ 84.561821] RBP: ffff88808565f618 R08: fffffbfff131030d R09: fffffbfff131030c [ 84.561830] R10: fffffbfff131030c R11: ffffffff89881867 R12: 0000000000000000 [ 84.561837] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 84.561849] FS: 000000000174f880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 84.561858] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.561866] CR2: 00007ffe80070464 CR3: 0000000088449000 CR4: 00000000001406f0 [ 84.561881] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.572858] kobject: 'hci4' (000000000daf95b0): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 84.575741] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.585392] kobject: 'hci5' (00000000b77a0aaf): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 84.589830] Call Trace: [ 84.589856] kernfs_create_dir_ns+0xf6/0x160 [ 84.589872] sysfs_create_dir_ns+0x19b/0x340 [ 84.608848] kobject: 'rfkill130': free name [ 84.614135] ? sysfs_create_mount_point+0xa0/0xa0 [ 84.622220] kobject: 'rfkill133' (000000005a2e83c4): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill133' [ 84.628833] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 84.628850] ? class_dir_child_ns_type+0xd/0x60 [ 84.628869] kobject_add_internal.cold.11+0x116/0x6af [ 84.628885] ? kobj_ns_type_registered+0x60/0x60 [ 84.636450] kobject: 'hci4' (000000000daf95b0): kobject_uevent_env [ 84.643411] ? lock_downgrade+0x900/0x900 [ 84.643426] ? refcount_add_not_zero_checked+0x330/0x330 [ 84.643445] ? kasan_check_read+0x11/0x20 [ 84.652213] kobject: 'hci2' (00000000bdd06e08): kobject_uevent_env [ 84.658938] kobject_add+0x13f/0x1b0 [ 84.658952] ? kset_create_and_add+0x190/0x190 [ 84.658969] ? mutex_unlock+0xd/0x10 [ 84.658985] ? device_add+0x382/0x18f0 [ 84.665118] kobject: 'rfkill133' (000000005a2e83c4): kobject_cleanup, parent (null) [ 84.672124] device_add+0x445/0x18f0 [ 84.672138] ? kfree_const+0x5e/0x70 [ 84.672154] ? get_device_parent.isra.28+0x5a0/0x5a0 [ 84.680702] kobject: 'hci2' (00000000bdd06e08): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' [ 84.689115] ? dev_set_name+0xad/0xe0 [ 84.689128] ? device_initialize+0x5f0/0x5f0 [ 84.689149] hci_register_dev+0x3b3/0x9c0 [ 84.689167] ? _copy_from_iter_full+0x2d8/0xce0 [ 84.696761] kobject: 'hci5' (00000000b77a0aaf): kobject_uevent_env [ 84.707171] ? hci_conn_params_free+0x810/0x810 [ 84.707184] ? graph_lock+0x270/0x270 executing program [ 84.707200] ? iov_iter_advance+0x13f0/0x13f0 [ 84.707224] __vhci_create_device+0x2c1/0x580 [ 84.709842] kobject: 'hci4' (000000000daf95b0): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' [ 84.714185] vhci_write+0x2d8/0x470 [ 84.720441] kobject: 'hci2' (00000000bdd06e08): kobject_cleanup, parent (null) [ 84.722890] __vfs_write+0x6b8/0x9f0 [ 84.728001] kobject: 'rfkill133' (000000005a2e83c4): calling ktype release [ 84.738627] ? kernel_read+0x120/0x120 [ 84.738640] ? lock_downgrade+0x900/0x900 [ 84.738660] ? rcu_read_unlock_special+0x370/0x370 [ 84.738678] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.744375] kobject: 'rfkill135' (00000000e2329c66): kobject_add_internal: parent: 'hci4', set: 'devices' [ 84.748084] ? rw_verify_area+0x118/0x360 [ 84.748098] vfs_write+0x1fc/0x580 [ 84.748113] ksys_write+0x101/0x260 [ 84.748127] ? __ia32_sys_read+0xb0/0xb0 [ 84.753444] kobject: 'hci5' (00000000b77a0aaf): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 84.758053] ? __bpf_trace_preemptirq_template+0x30/0x30 executing program [ 84.758069] __x64_sys_write+0x73/0xb0 [ 84.758086] do_syscall_64+0x1b9/0x820 [ 84.764871] kobject: 'hci2' (00000000bdd06e08): calling ktype release [ 84.769005] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 84.769022] ? syscall_return_slowpath+0x5e0/0x5e0 [ 84.769038] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 84.774812] kobject: 'rfkill135' (00000000e2329c66): kobject_uevent_env [ 84.778609] ? trace_hardirqs_on_caller+0x310/0x310 [ 84.778624] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 84.778640] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.778657] ? prepare_exit_to_usermode+0x291/0x3b0 [ 84.787468] kobject: 'rfkill133': free name [ 84.788663] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 84.793348] kobject: 'hci3' (000000003a8bb19a): kobject_uevent_env [ 84.796932] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.796943] RIP: 0033:0x440e49 [ 84.796959] 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 [ 84.796969] RSP: 002b:00007ffe80070458 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 [ 84.801884] kobject: 'hci2': free name [ 84.809487] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440e49 [ 84.809494] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 84.809509] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 84.809517] R10: 000000000174f880 R11: 0000000000000213 R12: 00000000000149df [ 84.809523] R13: 0000000000401d70 R14: 0000000000000000 R15: 0000000000000000 [ 84.809542] Modules linked in: [ 84.813594] kobject: 'rfkill135' (00000000e2329c66): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill135' [ 84.831719] kobject: 'hci3' (000000003a8bb19a): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' [ 84.833025] kobject: 'hci3' (000000003a8bb19a): kobject_cleanup, parent (null) [ 84.835849] kobject: 'rfkill134' (000000008bf2a3df): kobject_uevent_env [ 84.859575] kobject: 'hci3' (000000003a8bb19a): calling ktype release executing program [ 84.864768] kobject: 'rfkill136' (000000002b4f0d4d): kobject_add_internal: parent: 'hci5', set: 'devices' [ 84.889556] kobject: 'rfkill135' (00000000e2329c66): kobject_uevent_env [ 84.898275] kobject: 'hci2' (000000000e04012a): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 84.898620] kobject: 'rfkill134' (000000008bf2a3df): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill134' [ 84.905568] kobject: 'hci2' (000000000e04012a): kobject_uevent_env [ 84.912465] kobject: 'hci3': free name executing program [ 84.915328] kobject: 'hci2' (000000000e04012a): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' [ 84.937509] kobject: 'rfkill135' (00000000e2329c66): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill135' [ 84.941740] kobject: 'rfkill136' (000000002b4f0d4d): kobject_uevent_env [ 84.941768] kobject: 'rfkill136' (000000002b4f0d4d): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill136' [ 84.965723] ---[ end trace 16caaefba29cf998 ]--- [ 84.972163] kobject: 'hci3' (0000000014f3b9db): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 84.975003] RIP: 0010:kernfs_add_one+0x342/0x4d0 [ 84.980216] kobject: 'hci3' (0000000014f3b9db): kobject_uevent_env [ 84.984922] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 49 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 70 49 8d 7d 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 16 01 00 00 45 8b 6d 08 31 ff [ 84.991493] kobject: 'hci3' (0000000014f3b9db): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' [ 84.995382] RSP: 0018:ffff88808565f5d0 EFLAGS: 00010202 [ 85.002489] kobject: 'rfkill134' (000000008bf2a3df): kobject_cleanup, parent (null) [ 85.008209] kobject: 'rfkill135' (00000000e2329c66): kobject_cleanup, parent (null) [ 85.013353] kobject: 'rfkill136' (000000002b4f0d4d): kobject_uevent_env [ 85.017489] kobject: 'rfkill137' (00000000fa36e5b7): kobject_add_internal: parent: 'hci2', set: 'devices' [ 85.021873] kobject: 'rfkill134' (000000008bf2a3df): calling ktype release [ 85.026409] kobject: 'rfkill137' (00000000fa36e5b7): kobject_uevent_env [ 85.036986] kobject: 'rfkill136' (000000002b4f0d4d): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill136' [ 85.037554] kobject: 'rfkill135' (00000000e2329c66): calling ktype release [ 85.042652] kobject: 'rfkill134': free name [ 85.047347] RAX: dffffc0000000000 RBX: ffff88809895d7e0 RCX: ffffffff87e92f67 [ 85.066015] kobject: 'hci1' (000000008b14e306): kobject_uevent_env [ 85.073055] kobject: 'rfkill135': free name [ 85.078214] kobject: 'hci1' (000000008b14e306): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 85.084811] kobject: 'hci4' (000000000daf95b0): kobject_uevent_env [ 85.092271] kobject: 'hci1' (000000008b14e306): kobject_cleanup, parent (null) [ 85.099343] kobject: 'hci4' (000000000daf95b0): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' [ 85.107088] kobject: 'rfkill137' (00000000fa36e5b7): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill137' [ 85.114383] kobject: 'hci4' (000000000daf95b0): kobject_cleanup, parent (null) [ 85.117210] kobject: 'hci1' (000000008b14e306): calling ktype release [ 85.128280] kobject: 'hci4' (000000000daf95b0): calling ktype release [ 85.139563] kobject: 'rfkill136' (000000002b4f0d4d): kobject_cleanup, parent (null) [ 85.148210] kobject: 'hci4': free name [ 85.152264] kobject: 'rfkill138' (00000000a6d5272d): kobject_add_internal: parent: 'hci3', set: 'devices' [ 85.158947] RDX: 0000000000000001 RSI: ffffffff81fae6aa RDI: 0000000000000008 [ 85.170472] kobject: 'rfkill137' (00000000fa36e5b7): kobject_uevent_env [ 85.177615] kobject: 'hci1': free name [ 85.187008] kobject: 'rfkill136' (000000002b4f0d4d): calling ktype release [ 85.196670] RBP: ffff88808565f618 R08: fffffbfff131030d R09: fffffbfff131030c [ 85.204013] kobject: 'rfkill138' (00000000a6d5272d): kobject_uevent_env [ 85.208884] kobject: 'hci1' (000000001259984e): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 85.218224] kobject: 'rfkill137' (00000000fa36e5b7): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill137' [ 85.228064] R10: fffffbfff131030c R11: ffffffff89881867 R12: 0000000000000000 [ 85.235235] kobject: 'rfkill136': free name [ 85.246767] kobject: 'hci1' (000000001259984e): kobject_uevent_env [ 85.251773] kobject: 'rfkill138' (00000000a6d5272d): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill138' [ 85.260584] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 85.267672] kobject: 'hci4' (00000000e2040c66): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 85.272024] FS: 000000000174f880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 85.291841] kobject: 'rfkill137' (00000000fa36e5b7): kobject_cleanup, parent (null) [ 85.300393] kobject: 'hci1' (000000001259984e): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 85.306252] kobject: 'rfkill138' (00000000a6d5272d): kobject_uevent_env [ 85.314275] kobject: 'rfkill139' (00000000cd2ed49a): kobject_add_internal: parent: 'hci1', set: 'devices' [ 85.325417] kobject: 'rfkill137' (00000000fa36e5b7): calling ktype release [ 85.329588] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.340303] kobject: 'hci5' (00000000b77a0aaf): kobject_uevent_env [ 85.346786] kobject: 'rfkill139' (00000000cd2ed49a): kobject_uevent_env [ 85.354682] kobject: 'rfkill137': free name [ 85.364367] CR2: 00007ffe80070464 CR3: 0000000088449000 CR4: 00000000001406f0 [ 85.372314] kobject: 'rfkill138' (00000000a6d5272d): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill138' [ 85.376112] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.384457] kobject: 'hci5' (00000000b77a0aaf): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 85.389560] kobject: 'rfkill139' (00000000cd2ed49a): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill139' [ 85.394608] kobject: 'hci4' (00000000e2040c66): kobject_uevent_env [ 85.403574] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.411448] kobject: 'hci5' (00000000b77a0aaf): kobject_cleanup, parent (null) [ 85.419315] kobject: 'rfkill139' (00000000cd2ed49a): kobject_uevent_env [ 85.428884] kobject: 'rfkill138' (00000000a6d5272d): kobject_cleanup, parent (null) [ 85.439152] Kernel panic - not syncing: Fatal exception [ 85.450006] kobject: 'hci2' (000000000e04012a): kobject_uevent_env [ 85.454361] Kernel Offset: disabled [ 85.759405] Rebooting in 86400 seconds..