[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 37.524420][ T26] audit: type=1800 audit(1551207598.465:25): pid=7665 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 37.552232][ T26] audit: type=1800 audit(1551207598.475:26): pid=7665 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.590270][ T26] audit: type=1800 audit(1551207598.475:27): pid=7665 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 '10.128.0.32' (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 syzkaller login: [ 333.151756][ T7900] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 333.176798][ T7900] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 333.229157][ T7923] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 333.239984][ T7923] Bluetooth: Can't register HCI device [ 333.256783][ T7919] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 333.268754][ T7919] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 333.280401][ T7929] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 333.297257][ T7929] Bluetooth: Can't register HCI device [ 333.303627][ T7933] kobject_add_internal failed for hci5 (error: -2 parent: bluetooth) [ 333.312742][ T7933] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 333.498777][ T7998] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 333.513412][ T8002] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 333.525836][ T8002] Bluetooth: Can't register HCI device [ 333.531365][ T7998] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 333.691736][ T8055] WARNING: CPU: 1 PID: 8055 at fs/kernfs/dir.c:494 kernfs_get.part.0+0x73/0x90 [ 333.691744][ T8056] kobject: 'bluetooth' (0000000055818829): kobject_add_internal: parent: 'virtual', set: '(null)' [ 333.691763][ T8056] kobject: 'hci1' (0000000045193c6b): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 333.700830][ T8055] Kernel panic - not syncing: panic_on_warn set ... [ 333.700841][ T8055] CPU: 1 PID: 8055 Comm: syz-executor121 Not tainted 5.0.0-rc8-next-20190226 #43 [ 333.700846][ T8055] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 333.700881][ T8055] Call Trace: [ 333.700976][ T8055] dump_stack+0x172/0x1f0 [ 333.700993][ T8055] ? kernfs_unlink_sibling+0x170/0x170 [ 333.715349][ T8058] kobject: 'hci2' (00000000110bccd0): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 333.721993][ T8055] panic+0x2cb/0x65c [ 333.722009][ T8055] ? __warn_printk+0xf3/0xf3 [ 333.730014][ T8060] kobject: 'hci3' (00000000f2f1a095): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 333.737670][ T8055] ? kernfs_get.part.0+0x73/0x90 [ 333.737748][ T8055] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 333.737763][ T8055] ? __warn.cold+0x5/0x45 [ 333.747995][ T8058] kobject: 'hci2' (00000000110bccd0): kobject_uevent_env [ 333.751078][ T8055] ? __warn+0xe8/0x1d0 [ 333.751090][ T8055] ? kernfs_get.part.0+0x73/0x90 [ 333.751098][ T8055] __warn.cold+0x20/0x45 [ 333.751115][ T8055] ? kernfs_get.part.0+0x73/0x90 [ 333.755990][ T8056] kobject: 'hci1' (0000000045193c6b): kobject_uevent_env [ 333.760882][ T8055] report_bug+0x263/0x2b0 [ 333.761031][ T8055] do_error_trap+0x11b/0x200 [ 333.761046][ T8055] do_invalid_op+0x37/0x50 [ 333.772338][ T8058] kobject: 'hci2' (00000000110bccd0): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' [ 333.775328][ T8055] ? kernfs_get.part.0+0x73/0x90 [ 333.775378][ T8055] invalid_op+0x14/0x20 [ 333.775394][ T8055] RIP: 0010:kernfs_get.part.0+0x73/0x90 [ 333.780332][ T8060] kobject: 'hci3' (00000000f2f1a095): kobject_uevent_env [ 333.790356][ T8055] Code: e6 e8 e1 2c 9b ff 45 85 e4 74 1a e8 57 2b 9b ff be 04 00 00 00 48 89 df e8 9a d4 d2 ff f0 ff 03 5b 41 5c 5d c3 e8 3d 2b 9b ff <0f> 0b eb dd 48 89 df e8 91 fa d2 ff eb c1 0f 1f 44 00 00 66 2e 0f [ 333.790361][ T8055] RSP: 0018:ffff8880861d7808 EFLAGS: 00010293 [ 333.790369][ T8055] RAX: ffff8880a5946440 RBX: ffff88808a0e0700 RCX: ffffffff81d53a4f [ 333.790374][ T8055] RDX: 0000000000000000 RSI: ffffffff81d53a73 RDI: 0000000000000005 [ 333.790379][ T8055] RBP: ffff8880861d7818 R08: ffff8880a5946440 R09: ffffed101141c0e1 [ 333.790384][ T8055] R10: ffffed101141c0e0 R11: ffff88808a0e0703 R12: 0000000000000000 [ 333.790389][ T8055] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 333.790404][ T8055] ? kernfs_get.part.0+0x4f/0x90 [ 333.790412][ T8055] ? kernfs_get.part.0+0x73/0x90 [ 333.790426][ T8055] ? kernfs_get.part.0+0x73/0x90 [ 333.796213][ T8058] kobject: 'rfkill219' (00000000200242a2): kobject_add_internal: parent: 'hci2', set: 'devices' [ 333.801563][ T8055] kernfs_new_node+0xb8/0x130 [ 333.801575][ T8055] kernfs_create_dir_ns+0x52/0x160 [ 333.801607][ T8055] sysfs_create_dir_ns+0x131/0x2a0 [ 333.801621][ T8055] ? sysfs_create_mount_point+0xa0/0xa0 [ 333.801691][ T8055] ? class_dir_child_ns_type+0xd/0x60 [ 333.806318][ T8056] kobject: 'hci1' (0000000045193c6b): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 333.813080][ T8055] kobject_add_internal.cold+0xe5/0x5d4 [ 333.813092][ T8055] kobject_add+0x150/0x1c0 [ 333.813099][ T8055] ? kset_create_and_add+0x1a0/0x1a0 [ 333.813163][ T8055] ? kasan_check_read+0x11/0x20 [ 333.817634][ T8058] kobject: 'rfkill219' (00000000200242a2): kobject_uevent_env [ 333.822102][ T8055] ? mutex_unlock+0xd/0x10 [ 333.822111][ T8055] ? device_add+0x30f/0x18a0 [ 333.822121][ T8055] device_add+0x3d5/0x18a0 [ 333.822129][ T8055] ? device_initialize+0x440/0x440 [ 333.822143][ T8055] ? get_device_parent.isra.0+0x570/0x570 [ 333.826683][ T8060] kobject: 'hci3' (00000000f2f1a095): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' [ 333.831344][ T8055] hci_register_dev+0x304/0x880 [ 333.831427][ T8055] __vhci_create_device+0x2d0/0x5a0 [ 333.838677][ T8058] kobject: 'rfkill219' (00000000200242a2): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill219' [ 333.842678][ T8055] vhci_write+0x2d0/0x470 [ 333.842733][ T8055] new_sync_write+0x4c7/0x760 [ 333.842748][ T8055] ? default_llseek+0x2e0/0x2e0 [ 333.847957][ T8056] kobject: 'rfkill220' (000000006b92d6db): kobject_add_internal: parent: 'hci1', set: 'devices' [ 333.851749][ T8055] ? common_file_perm+0x238/0x720 [ 333.851763][ T8055] ? apparmor_file_permission+0x25/0x30 [ 333.862673][ T8058] kobject: 'rfkill219' (00000000200242a2): kobject_uevent_env [ 333.866979][ T8055] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 333.867023][ T8055] ? security_file_permission+0x94/0x380 [ 333.867035][ T8055] __vfs_write+0xe4/0x110 [ 333.867048][ T8055] vfs_write+0x20c/0x580 [ 333.871268][ T8058] kobject: 'rfkill219' (00000000200242a2): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill219' [ 333.876709][ T8055] ksys_write+0xea/0x1f0 [ 333.876719][ T8055] ? __ia32_sys_read+0xb0/0xb0 [ 333.876755][ T8055] ? do_syscall_64+0x26/0x610 [ 333.876766][ T8055] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 333.876780][ T8055] ? do_syscall_64+0x26/0x610 [ 333.884347][ T8056] kobject: 'rfkill220' (000000006b92d6db): kobject_uevent_env [ 333.903372][ T8055] __x64_sys_write+0x73/0xb0 [ 333.903385][ T8055] do_syscall_64+0x103/0x610 [ 333.903396][ T8055] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 333.903404][ T8055] RIP: 0033:0x440e59 [ 333.903414][ T8055] 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 [ 333.903418][ T8055] RSP: 002b:00007ffc4ad25d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 333.903427][ T8055] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000440e59 [ 333.903432][ T8055] RDX: 0000000000000002 RSI: 0000000020000040 RDI: 0000000000000003 [ 333.903443][ T8055] RBP: 000000000005174b R08: 00000000004002c8 R09: 00000000004002c8 [ 333.910032][ T8056] kobject: 'rfkill220' (000000006b92d6db): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill220' [ 333.917454][ T8055] R10: 0000000000ec1880 R11: 0000000000000246 R12: 0000000000401cf0 [ 333.917459][ T8055] R13: 0000000000401d80 R14: 0000000000000000 R15: 0000000000000000 [ 333.926516][ T8055] Kernel Offset: disabled [ 334.303805][ T8055] Rebooting in 86400 seconds..