[ 45.039090] audit: type=1800 audit(1562008022.385:30): pid=7696 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 50.504565] kauditd_printk_skb: 4 callbacks suppressed [ 50.504579] audit: type=1400 audit(1562008027.875:35): avc: denied { map } for pid=7868 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.151' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program [ 466.606745] audit: type=1400 audit(1562008443.975:36): avc: denied { map } for pid=7880 comm="syz-executor146" path="/root/syz-executor146156125" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program [ 466.649994] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 466.666349] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 471.700775] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 471.700892] 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 [ 472.875013] kobject_add_internal failed for hci5 (error: -2 parent: bluetooth) [ 472.900464] 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 [ 473.355931] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 473.392662] 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 [ 473.986177] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 474.004789] Bluetooth: Can't register HCI device [ 474.017182] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) executing program executing program executing program executing program executing program [ 474.058838] 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 [ 475.114206] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 475.135030] 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 [ 475.537671] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 475.562951] 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 [ 475.620518] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 475.629808] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 475.655653] Bluetooth: Can't register HCI device [ 475.662925] 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 [ 475.877548] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 475.885310] kobject_add_internal failed for hci5 (error: -2 parent: bluetooth) [ 475.901029] Bluetooth: Can't register HCI device [ 475.910544] 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 [ 476.229477] ------------[ cut here ]------------ [ 476.242971] refcount_t: increment on 0; use-after-free. [ 476.250181] WARNING: CPU: 0 PID: 9410 at lib/refcount.c:153 refcount_inc_checked+0x61/0x70 [ 476.258618] Kernel panic - not syncing: panic_on_warn set ... [ 476.258618] [ 476.266020] CPU: 0 PID: 9410 Comm: syz-executor146 Not tainted 4.19.56 #28 [ 476.273075] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 476.282466] Call Trace: [ 476.285100] dump_stack+0x172/0x1f0 [ 476.288778] panic+0x263/0x507 [ 476.292018] ? __warn_printk+0xf3/0xf3 [ 476.295943] ? refcount_inc_checked+0x61/0x70 [ 476.300484] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 476.306057] ? __warn.cold+0x5/0x4a [ 476.309715] ? __warn+0xe8/0x1d0 [ 476.313112] ? refcount_inc_checked+0x61/0x70 [ 476.317639] __warn.cold+0x20/0x4a [ 476.321240] ? refcount_inc_checked+0x61/0x70 [ 476.325771] report_bug+0x263/0x2b0 [ 476.329438] do_error_trap+0x204/0x360 [ 476.333355] ? math_error+0x340/0x340 [ 476.337175] ? vprintk_emit+0x264/0x690 [ 476.341177] ? vprintk_emit+0x1ab/0x690 [ 476.345183] ? error_entry+0x76/0xd0 [ 476.348938] ? trace_hardirqs_off_caller+0x65/0x220 [ 476.353984] ? vprintk_default+0x28/0x30 [ 476.358079] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 476.362956] do_invalid_op+0x1b/0x20 [ 476.366701] invalid_op+0x14/0x20 [ 476.370182] RIP: 0010:refcount_inc_checked+0x61/0x70 [ 476.375312] Code: 1d 1d 74 12 06 31 ff 89 de e8 9b 5f 47 fe 84 db 75 dd e8 52 5e 47 fe 48 c7 c7 c0 95 81 87 c6 05 fd 73 12 06 01 e8 8d 37 1b fe <0f> 0b eb c1 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 [ 476.394247] RSP: 0018:ffff88808ba0f920 EFLAGS: 00010286 [ 476.399725] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 476.407026] RDX: 0000000000000000 RSI: ffffffff8155b1c6 RDI: ffffed1011741f16 [ 476.414363] RBP: ffff88808ba0f930 R08: ffff88808180a380 R09: ffffed1015d04fe9 [ 476.421927] R10: ffffed1015d04fe8 R11: ffff8880ae827f47 R12: ffff8880a7f56338 [ 476.429237] R13: ffff88809a5aaa20 R14: ffff88809a5aaa18 R15: ffff8880a7f562b8 [ 476.436556] ? vprintk_func+0x86/0x189 [ 476.440480] kobject_get+0x66/0xc0 [ 476.444137] kobject_add_internal+0x14f/0x380 [ 476.448712] ? kfree_const+0x5e/0x70 [ 476.452458] kobject_add+0x150/0x1c0 [ 476.456205] ? kset_create_and_add+0x1a0/0x1a0 [ 476.460825] ? rcu_read_lock_sched_held+0x110/0x130 [ 476.465884] ? kmem_cache_alloc_trace+0x348/0x760 [ 476.470775] get_device_parent.isra.0+0x415/0x570 [ 476.475648] device_add+0x2f4/0x1760 [ 476.479386] ? device_initialize+0x440/0x440 [ 476.483862] ? get_device_parent.isra.0+0x570/0x570 [ 476.488925] ? start_creating+0x163/0x1e0 [ 476.493105] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 476.498704] hci_register_dev+0x304/0x880 [ 476.502944] __vhci_create_device+0x2d0/0x5a0 [ 476.507474] vhci_write+0x2d6/0x470 [ 476.511125] __vfs_write+0x587/0x810 [ 476.514863] ? kernel_read+0x120/0x120 [ 476.518797] ? __inode_security_revalidate+0xda/0x120 [ 476.524020] ? selinux_file_permission+0x92/0x550 [ 476.528989] ? security_file_permission+0x89/0x230 [ 476.533946] ? rw_verify_area+0x118/0x360 [ 476.538122] vfs_write+0x20c/0x560 [ 476.541689] ksys_write+0x14f/0x2d0 [ 476.545364] ? __ia32_sys_read+0xb0/0xb0 [ 476.549456] ? do_syscall_64+0x26/0x620 [ 476.553457] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 476.559045] ? do_syscall_64+0x26/0x620 [ 476.563050] __x64_sys_write+0x73/0xb0 [ 476.566963] do_syscall_64+0xfd/0x620 [ 476.570821] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 476.576050] RIP: 0033:0x441279 [ 476.579263] 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 [ 476.598664] RSP: 002b:00007ffe370df8c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 476.606410] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441279 [ 476.614142] RDX: 0000000000000002 RSI: 0000000020000000 RDI: 0000000000000003 [ 476.621520] RBP: 000000000007440a R08: 00000000004002c8 R09: 00000000004002c8 [ 476.628814] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000401ff0 [ 476.636105] R13: 0000000000402080 R14: 0000000000000000 R15: 0000000000000000 [ 476.644719] Kernel Offset: disabled [ 476.648447] Rebooting in 86400 seconds..