[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 46.077817][ T24] audit: type=1800 audit(1561944937.030:25): pid=7962 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 46.118636][ T24] audit: type=1800 audit(1561944937.040:26): pid=7962 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 46.152837][ T24] audit: type=1800 audit(1561944937.040:27): pid=7962 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 '10.128.0.50' (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 syzkaller login: [ 63.839942][ T8243] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 63.883970][ T8243] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 65.094844][ T8544] ------------[ cut here ]------------ [ 65.106660][ T8544] sysfs group 'power' not found for kobject 'rfkill392' [ 65.114867][ T8544] WARNING: CPU: 1 PID: 8544 at fs/sysfs/group.c:256 sysfs_remove_group+0x24e/0x260 [ 65.115197][ T8543] kobject: 'bluetooth': free name [ 65.124132][ T8544] Kernel panic - not syncing: panic_on_warn set ... [ 65.124141][ T8544] CPU: 1 PID: 8544 Comm: syz-executor509 Not tainted 5.2.0-rc7 #12 [ 65.124145][ T8544] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.124148][ T8544] Call Trace: [ 65.124160][ T8544] dump_stack+0x1d8/0x2f8 [ 65.124169][ T8544] panic+0x28a/0x7c9 [ 65.124175][ T8544] ? __warn+0x126/0x220 [ 65.124180][ T8544] ? nmi_panic+0x97/0x97 [ 65.124188][ T8544] ? sysfs_remove_group+0x24e/0x260 [ 65.124197][ T8544] ? is_valid_bugaddr+0x81/0x100 [ 65.124204][ T8544] __warn+0x216/0x220 [ 65.124209][ T8544] ? sysfs_remove_group+0x24e/0x260 [ 65.124216][ T8544] report_bug+0x190/0x290 [ 65.124222][ T8544] ? sysfs_remove_group+0x24e/0x260 [ 65.124229][ T8544] do_error_trap+0xd7/0x450 [ 65.124240][ T8544] do_invalid_op+0x36/0x40 [ 65.124246][ T8544] ? sysfs_remove_group+0x24e/0x260 [ 65.163970][ T8545] kobject: 'bluetooth' (0000000002453681): kobject_add_internal: parent: 'virtual', set: '(null)' [ 65.165503][ T8544] invalid_op+0x14/0x20 [ 65.169813][ T8545] kobject: 'hci2' (00000000edbe4a58): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 65.173896][ T8544] RIP: 0010:sysfs_remove_group+0x24e/0x260 [ 65.181166][ T8543] kobject: 'hci5' (00000000197cacc0): kobject_cleanup, parent 0000000087f1e09c [ 65.184001][ T8544] Code: 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 46 77 d2 ff 49 8b 17 48 c7 c7 a8 36 5e 88 48 89 de 31 c0 e8 f2 1f 6b ff <0f> 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 90 55 48 89 e5 [ 65.187964][ T8543] kobject: 'hci5' (00000000197cacc0): calling ktype release [ 65.193127][ T8544] RSP: 0018:ffff8880896df9e0 EFLAGS: 00010246 [ 65.193135][ T8544] RAX: 5096149f5926e100 RBX: ffffffff88007740 RCX: ffff8880895d4080 [ 65.193140][ T8544] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 65.193145][ T8544] RBP: ffff8880896dfa10 R08: ffffffff815e87d4 R09: ffffed1015d66063 [ 65.193150][ T8544] R10: ffffed1015d66063 R11: 1ffff11015d66062 R12: ffff888096663000 [ 65.193154][ T8544] R13: dffffc0000000000 R14: ffffffff88007748 R15: ffff88808f6aef20 [ 65.193181][ T8544] ? vprintk_emit+0x2d4/0x3a0 [ 65.193195][ T8544] ? sysfs_unmerge_group+0x10e/0x120 [ 65.219662][ T8545] kobject: 'hci2' (00000000edbe4a58): kobject_uevent_env [ 65.227306][ T8544] dpm_sysfs_remove+0x87/0xb0 [ 65.240440][ T8543] kobject: 'hci5': free name [ 65.241822][ T8544] device_del+0x188/0x1020 [ 65.273634][ T8545] kobject: 'hci2' (00000000edbe4a58): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' [ 65.276118][ T8544] ? device_register+0x20/0x20 [ 65.288887][ T8547] kobject: 'hci3' (00000000c581e37e): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 65.289417][ T8544] ? kasan_check_write+0x14/0x20 [ 65.297760][ T8547] kobject: 'hci3' (00000000c581e37e): kobject_uevent_env [ 65.305554][ T8544] ? do_raw_read_unlock+0x42/0xf0 [ 65.305569][ T8544] rfkill_unregister+0xc0/0x220 [ 65.305581][ T8544] hci_unregister_dev+0x294/0x13e0 [ 65.305595][ T8544] vhci_release+0x77/0xc0 [ 65.314733][ T8546] kobject: 'hci4' (00000000fda7764d): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 65.321497][ T8544] ? vhci_open+0x2a0/0x2a0 [ 65.321532][ T8544] __fput+0x2e4/0x740 [ 65.321546][ T8544] ____fput+0x15/0x20 [ 65.321559][ T8544] task_work_run+0x17e/0x1b0 [ 65.356793][ T8545] kobject: 'rfkill393' (0000000024be98a6): kobject_add_internal: parent: 'hci2', set: 'devices' [ 65.360135][ T8544] do_exit+0x63f/0x2300 [ 65.360167][ T8544] ? mm_update_next_owner+0x580/0x580 [ 65.360188][ T8544] ? kasan_check_write+0x14/0x20 [ 65.360198][ T8544] ? __up_read+0xc5/0x1e0 [ 65.360211][ T8544] ? up_read+0x22/0x30 [ 65.360235][ T8544] do_group_exit+0x15c/0x2a0 [ 65.375769][ T8546] kobject: 'hci4' (00000000fda7764d): kobject_uevent_env [ 65.385685][ T8544] ? trace_irq_disable_rcuidle+0x23/0x1c0 [ 65.385696][ T8544] __do_sys_exit_group+0x17/0x20 [ 65.385705][ T8544] __se_sys_exit_group+0x14/0x20 [ 65.385713][ T8544] __x64_sys_exit_group+0x3b/0x40 [ 65.385723][ T8544] do_syscall_64+0xfe/0x140 [ 65.385737][ T8544] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 65.427027][ T8547] kobject: 'hci3' (00000000c581e37e): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' [ 65.427330][ T8544] RIP: 0033:0x43fed8 [ 65.443233][ T8545] kobject: 'rfkill393' (0000000024be98a6): kobject_uevent_env [ 65.444281][ T8544] Code: Bad RIP value. [ 65.463245][ T8546] kobject: 'hci4' (00000000fda7764d): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' [ 65.464140][ T8544] RSP: 002b:00007ffef5b394a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 65.506365][ T8545] kobject: 'rfkill393' (0000000024be98a6): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill393' [ 65.509551][ T8544] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fed8 [ 65.509557][ T8544] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 65.509562][ T8544] RBP: 00000000004bf710 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 65.509566][ T8544] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000001 [ 65.509571][ T8544] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 65.515042][ T8544] Kernel Offset: disabled [ 65.620749][ T8544] Rebooting in 86400 seconds..