[ 37.136114] audit: type=1800 audit(1545856595.693:25): pid=7674 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 37.164176] audit: type=1800 audit(1545856595.693:26): pid=7674 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.195800] audit: type=1800 audit(1545856595.693:27): pid=7674 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.434243] cron (7732) used greatest stack depth: 15432 bytes left [....] 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 '10.128.10.27' (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 syzkaller login: [ 56.164260] kasan: CONFIG_KASAN_INLINE enabled executing program executing program [ 56.185528] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 56.216643] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 56.219898] kobject: 'rfkill61' (00000000e6003bb0): kobject_uevent_env [ 56.222996] CPU: 1 PID: 7889 Comm: syz-executor917 Not tainted 4.20.0-rc7-next-20181224 #188 [ 56.223004] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.223021] RIP: 0010:kernfs_add_one+0x342/0x4d0 [ 56.223034] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 49 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 70 49 8d 7d 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 16 01 00 00 45 8b 6d 08 31 ff [ 56.230250] kobject: 'rfkill61' (00000000e6003bb0): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill61' [ 56.238272] RSP: 0018:ffff8881c11ff5d0 EFLAGS: 00010202 [ 56.238283] RAX: dffffc0000000000 RBX: ffff8881c08fed20 RCX: ffffffff87e63117 [ 56.238291] RDX: 0000000000000001 RSI: ffffffff81fd0b6a RDI: 0000000000000008 [ 56.238299] RBP: ffff8881c11ff618 R08: fffffbfff1310a9d R09: fffffbfff1310a9c [ 56.238306] R10: fffffbfff1310a9c R11: ffffffff898854e7 R12: 0000000000000000 [ 56.238313] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 56.238323] FS: 00000000008a1880(0000) GS:ffff8881dad00000(0000) knlGS:0000000000000000 [ 56.238330] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.238341] CR2: 00007f63768d7000 CR3: 00000001d92bd000 CR4: 00000000001406e0 [ 56.248227] kobject: 'rfkill61' (00000000e6003bb0): kobject_cleanup, parent (null) [ 56.252482] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.252490] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.252495] Call Trace: [ 56.252515] kernfs_create_dir_ns+0xf6/0x160 [ 56.252530] sysfs_create_dir_ns+0x19b/0x340 executing program executing program executing program executing program executing program [ 56.271717] kobject: 'rfkill61' (00000000e6003bb0): calling ktype release [ 56.282217] ? sysfs_create_mount_point+0xa0/0xa0 [ 56.282233] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 56.282249] ? class_dir_child_ns_type+0xd/0x60 [ 56.282272] kobject_add_internal.cold.11+0x116/0x6af [ 56.287798] kobject: 'rfkill61': free name [ 56.294894] ? kobj_ns_type_registered+0x60/0x60 [ 56.294909] ? lock_downgrade+0x900/0x900 [ 56.294924] ? refcount_dec_and_mutex_lock+0x90/0x90 [ 56.302423] kobject: 'hci4' (00000000adc54b0b): kobject_uevent_env [ 56.309456] ? kasan_check_read+0x11/0x20 [ 56.309472] kobject_add+0x13f/0x1b0 [ 56.309485] ? kset_create_and_add+0x190/0x190 [ 56.309500] ? mutex_unlock+0xd/0x10 [ 56.316935] kobject: 'hci4' (00000000adc54b0b): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' [ 56.324021] ? device_add+0x382/0x18f0 [ 56.324036] device_add+0x445/0x18f0 [ 56.324049] ? kfree_const+0x5e/0x70 [ 56.324063] ? get_device_parent.isra.28+0x5a0/0x5a0 [ 56.332794] kobject: 'bluetooth' (000000003f64e882): kobject_cleanup, parent (null) [ 56.338245] ? dev_set_name+0xad/0xe0 [ 56.338259] ? device_initialize+0x5f0/0x5f0 [ 56.338280] hci_register_dev+0x3b3/0x9c0 [ 56.338293] ? _copy_from_iter_full+0x2d8/0xce0 [ 56.338307] ? hci_conn_params_free+0x810/0x810 [ 56.345785] kobject: 'bluetooth' (000000003f64e882): calling ktype release [ 56.354200] ? graph_lock+0x270/0x270 [ 56.354215] ? iov_iter_advance+0x13f0/0x13f0 [ 56.354233] __vhci_create_device+0x2c1/0x580 [ 56.354245] vhci_write+0x2d8/0x470 [ 56.354260] __vfs_write+0x72c/0xab0 [ 56.361744] kobject: 'bluetooth': free name [ 56.369032] ? kernel_read+0x120/0x120 [ 56.369045] ? lock_downgrade+0x900/0x900 [ 56.369062] ? apparmor_file_permission+0x24/0x30 [ 56.369075] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.369089] ? rw_verify_area+0x118/0x360 [ 56.369101] vfs_write+0x1fc/0x580 [ 56.369115] ksys_write+0x101/0x260 [ 56.369128] ? __ia32_sys_read+0xb0/0xb0 [ 56.369149] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 56.372014] kobject: 'hci4' (00000000adc54b0b): kobject_cleanup, parent (null) [ 56.376138] __x64_sys_write+0x73/0xb0 [ 56.376154] do_syscall_64+0x1b9/0x820 [ 56.376168] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 56.376183] ? syscall_return_slowpath+0x5e0/0x5e0 [ 56.380735] kobject: 'hci4' (00000000adc54b0b): calling ktype release [ 56.387499] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.387514] ? trace_hardirqs_on_caller+0x310/0x310 [ 56.387528] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 56.387539] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.387553] ? prepare_exit_to_usermode+0x291/0x3b0 [ 56.392608] kobject: 'hci4': free name [ 56.397436] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.397456] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.397465] RIP: 0033:0x440ee9 [ 56.397480] 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 [ 56.405131] kobject: 'bluetooth' (000000003a058194): kobject_add_internal: parent: 'virtual', set: '(null)' [ 56.407345] RSP: 002b:00007ffebd3286b8 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 [ 56.407359] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440ee9 [ 56.407366] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 56.407373] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 56.407381] R10: 00000000004002c8 R11: 0000000000000213 R12: 000000000000db0e [ 56.407387] R13: 0000000000401e10 R14: 0000000000000000 R15: 0000000000000000 [ 56.407399] Modules linked in: [ 56.411832] kobject: 'hci0' (0000000078c8c688): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 56.423155] kobject: 'hci2' (00000000fc5e314f): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 56.429637] kobject: 'hci4' (000000007de836d6): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 56.433901] kobject: 'hci5' (00000000fb9b2670): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 56.436967] kobject: 'hci3' (00000000baad7e4e): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 56.440631] kobject: 'hci5' (00000000fb9b2670): kobject_uevent_env [ 56.444993] kobject: 'hci0' (0000000078c8c688): kobject_uevent_env [ 56.449562] kobject: 'hci2' (00000000fc5e314f): kobject_uevent_env [ 56.459314] kobject: 'hci3' (00000000baad7e4e): kobject_uevent_env [ 56.462860] kobject: 'hci5' (00000000fb9b2670): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 56.466522] kobject: 'hci4' (000000007de836d6): kobject_uevent_env [ 56.470683] kobject: 'rfkill62' (0000000054d70dec): kobject_add_internal: parent: 'hci5', set: 'devices' [ 56.475589] kobject: 'hci4' (000000007de836d6): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' [ 56.485385] kobject: 'hci2' (00000000fc5e314f): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' [ 56.488557] kobject: 'hci3' (00000000baad7e4e): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' [ 56.493106] kobject: 'rfkill62' (0000000054d70dec): kobject_uevent_env [ 56.496862] kobject: 'hci0' (0000000078c8c688): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' [ 56.503691] kobject: 'rfkill62' (0000000054d70dec): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill62' [ 56.509499] ---[ end trace e781510261aa5c46 ]--- [ 56.515932] kobject: 'rfkill63' (00000000d831f9b4): kobject_add_internal: parent: 'hci2', set: 'devices' [ 56.518107] RIP: 0010:kernfs_add_one+0x342/0x4d0 [ 56.523406] kobject: 'rfkill63' (00000000d831f9b4): kobject_uevent_env [ 56.526914] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 49 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 70 49 8d 7d 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 16 01 00 00 45 8b 6d 08 31 ff [ 56.530300] kobject: 'rfkill63' (00000000d831f9b4): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill63' [ 56.533804] RSP: 0018:ffff8881c11ff5d0 EFLAGS: 00010202 [ 56.538627] kobject: 'rfkill62' (0000000054d70dec): kobject_uevent_env [ 56.542087] RAX: dffffc0000000000 RBX: ffff8881c08fed20 RCX: ffffffff87e63117 [ 56.546766] kobject: 'rfkill63' (00000000d831f9b4): kobject_uevent_env [ 56.551906] kobject: 'rfkill64' (00000000b15cb0b3): kobject_add_internal: parent: 'hci3', set: 'devices' [ 56.557386] kobject: 'rfkill62' (0000000054d70dec): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill62' [ 56.561695] kobject: 'rfkill64' (00000000b15cb0b3): kobject_uevent_env [ 56.565624] kobject: 'rfkill63' (00000000d831f9b4): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill63' [ 56.568699] RDX: 0000000000000001 RSI: ffffffff81fd0b6a RDI: 0000000000000008 [ 56.572913] kobject: 'rfkill64' (00000000b15cb0b3): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill64' [ 56.578575] RBP: ffff8881c11ff618 R08: fffffbfff1310a9d R09: fffffbfff1310a9c [ 56.586816] kobject: 'rfkill65' (00000000946282fa): kobject_add_internal: parent: 'hci4', set: 'devices' [ 56.591193] R10: fffffbfff1310a9c R11: ffffffff898854e7 R12: 0000000000000000 [ 56.595330] kobject: 'rfkill65' (00000000946282fa): kobject_uevent_env [ 56.599916] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 56.604686] kobject: 'rfkill64' (00000000b15cb0b3): kobject_uevent_env [ 56.611205] FS: 00000000008a1880(0000) GS:ffff8881dac00000(0000) knlGS:0000000000000000 [ 56.616023] kobject: 'rfkill65' (00000000946282fa): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill65' [ 56.621019] kobject: 'rfkill64' (00000000b15cb0b3): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill64' [ 56.626493] kobject: 'rfkill66' (000000002c0dd4f1): kobject_add_internal: parent: 'hci0', set: 'devices' [ 56.632318] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.638447] kobject: 'rfkill65' (00000000946282fa): kobject_uevent_env [ 56.641424] CR2: 00007f63768d7000 CR3: 00000001d92bd000 CR4: 00000000001406f0 [ 56.645944] kobject: 'rfkill65' (00000000946282fa): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill65' [ 56.651232] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.654804] kobject: 'rfkill66' (000000002c0dd4f1): kobject_uevent_env [ 56.672975] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.683307] kobject: 'rfkill66' (000000002c0dd4f1): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill66' [ 56.691317] Kernel panic - not syncing: Fatal exception [ 56.699920] kobject: 'rfkill62' (0000000054d70dec): kobject_cleanup, parent (null) [ 56.706780] Kernel Offset: disabled [ 57.195375] Rebooting in 86400 seconds..