[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 60.004525][ T26] audit: type=1800 audit(1559600368.742:25): pid=8776 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 60.051726][ T26] audit: type=1800 audit(1559600368.742:26): pid=8776 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 60.082327][ T26] audit: type=1800 audit(1559600368.752:27): pid=8776 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 '10.128.10.39' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 72.513361][ T9266] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 72.535994][ T9266] 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 [ 73.340648][ T9378] 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 [ 73.392930][ T9378] 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 [ 74.494723][ T9529] 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 [ 74.545515][ T9529] 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 [ 74.721359][ T9558] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 74.722326][ T9556] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 74.746356][ T9558] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program [ 74.794707][ T9556] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 77.161139][ T9850] kobject_add_internal failed for hci5 (error: -2 parent: bluetooth) [ 77.161182][ T9848] kobject_add_internal failed for hci4 (error: -2 parent: bluetooth) [ 77.186411][ T9850] Bluetooth: Can't register HCI device executing program executing program executing program executing program [ 77.265680][ T9848] 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 [ 77.771301][ T9910] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) executing program executing program executing program executing program [ 77.816245][ T9912] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 77.827127][ T9910] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program [ 77.872965][ T9912] 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 [ 78.222723][ T9951] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) executing program executing program executing program executing program executing program executing program executing program [ 78.264758][ T9951] 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 [ 78.842993][T10015] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) executing program executing program executing program executing program executing program [ 78.898378][T10015] 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 [ 79.241581][T10056] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) executing program executing program executing program executing program executing program executing program [ 79.295410][T10056] 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 [ 81.765939][T10333] ------------[ cut here ]------------ [ 81.780087][T10333] refcount_t: increment on 0; use-after-free. [ 81.792923][T10333] WARNING: CPU: 1 PID: 10333 at lib/refcount.c:156 refcount_inc_checked+0x61/0x70 [ 81.802140][T10333] Kernel panic - not syncing: panic_on_warn set ... [ 81.808738][T10333] CPU: 1 PID: 10333 Comm: syz-executor556 Not tainted 5.2.0-rc3 #18 [ 81.816722][T10333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.829313][T10333] Call Trace: [ 81.834287][T10333] dump_stack+0x172/0x1f0 [ 81.838639][T10333] ? refcount_inc_not_zero_checked+0x170/0x200 [ 81.844847][T10333] panic+0x2cb/0x744 [ 81.848764][T10333] ? __warn_printk+0xf3/0xf3 [ 81.853381][T10333] ? refcount_inc_checked+0x61/0x70 [ 81.858592][T10333] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.864851][T10333] ? __warn.cold+0x5/0x4d [ 81.869197][T10333] ? __warn+0xe8/0x1d0 [ 81.873287][T10333] ? refcount_inc_checked+0x61/0x70 [ 81.878497][T10333] __warn.cold+0x20/0x4d [ 81.882750][T10333] ? refcount_inc_checked+0x61/0x70 [ 81.887963][T10333] report_bug+0x263/0x2b0 [ 81.892301][T10333] do_error_trap+0x11b/0x200 [ 81.896890][T10333] do_invalid_op+0x37/0x50 [ 81.901577][T10333] ? refcount_inc_checked+0x61/0x70 [ 81.906806][T10333] invalid_op+0x14/0x20 [ 81.910962][T10333] RIP: 0010:refcount_inc_checked+0x61/0x70 [ 81.916843][T10333] Code: 1d 7d 96 48 06 31 ff 89 de e8 1b 7e 3c fe 84 db 75 dd e8 d2 7c 3c fe 48 c7 c7 a0 9a a4 87 c6 05 5d 96 48 06 01 e8 1d c0 0e fe <0f> 0b eb c1 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 [ 81.936876][T10333] RSP: 0018:ffff88808ca978f8 EFLAGS: 00010286 [ 81.943064][T10333] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 81.951049][T10333] RDX: 0000000000000000 RSI: ffffffff815ac936 RDI: ffffed1011952f11 [ 81.959015][T10333] RBP: ffff88808ca97908 R08: ffff888098d163c0 R09: ffffed1015d26011 [ 81.972912][T10333] R10: ffffed1015d26010 R11: ffff8880ae930087 R12: ffff88821adf9df8 [ 81.980909][T10333] R13: ffff8880a94f1e20 R14: ffff8880a94f1e18 R15: ffff88821adf9d78 [ 81.989001][T10333] ? vprintk_func+0x86/0x189 [ 81.993610][T10333] ? refcount_inc_checked+0x61/0x70 [ 81.998802][T10333] kobject_get+0x66/0xc0 [ 82.003177][T10333] kobject_add_internal+0x14f/0x380 [ 82.008907][T10333] ? kfree_const+0x5e/0x70 [ 82.013342][T10333] kobject_add+0x150/0x1c0 [ 82.017838][T10333] ? kset_create_and_add+0x1a0/0x1a0 [ 82.023130][T10333] ? get_device_parent.isra.0+0x34c/0x560 [ 82.029068][T10333] ? rcu_read_lock_sched_held+0x110/0x130 [ 82.034784][T10333] ? kmem_cache_alloc_trace+0x351/0x750 [ 82.040325][T10333] get_device_parent.isra.0+0x413/0x560 [ 82.045867][T10333] device_add+0x2df/0x17a0 [ 82.050292][T10333] ? get_device_parent.isra.0+0x560/0x560 [ 82.055998][T10333] ? up_write+0xbe/0x1e0 [ 82.060233][T10333] hci_register_dev+0x2e8/0x860 [ 82.065099][T10333] __vhci_create_device+0x2d0/0x5a0 [ 82.071749][T10333] vhci_write+0x2d0/0x470 [ 82.076166][T10333] new_sync_write+0x4d3/0x770 [ 82.080850][T10333] ? new_sync_read+0x800/0x800 [ 82.088605][T10333] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.094839][T10333] ? security_file_permission+0x8f/0x380 [ 82.100565][T10333] __vfs_write+0xe1/0x110 [ 82.104883][T10333] vfs_write+0x20c/0x580 [ 82.109137][T10333] ksys_write+0x14f/0x290 [ 82.113458][T10333] ? __ia32_sys_read+0xb0/0xb0 [ 82.118215][T10333] ? do_syscall_64+0x26/0x680 [ 82.122993][T10333] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.129075][T10333] ? do_syscall_64+0x26/0x680 [ 82.133748][T10333] __x64_sys_write+0x73/0xb0 [ 82.138334][T10333] do_syscall_64+0xfd/0x680 [ 82.142933][T10333] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.148818][T10333] RIP: 0033:0x441269 [ 82.152723][T10333] 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 82.172314][T10333] RSP: 002b:00007ffd14499168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 82.180796][T10333] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 82.188755][T10333] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 82.196722][T10333] RBP: 0000000000013ef1 R08: 00000000004002c8 R09: 00000000004002c8 [ 82.204688][T10333] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000401fe0 [ 82.212657][T10333] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 82.222016][T10333] Kernel Offset: disabled [ 82.226435][T10333] Rebooting in 86400 seconds..