Warning: Permanently added '10.128.15.214' (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 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.442690] ================================================================== [ 53.450217] BUG: KASAN: use-after-free in kobject_put+0xca/0xe0 [ 53.450231] Read of size 1 at addr ffff88808f9e9ecc by task syz-executor111/8699 [ 53.450234] [ 53.450250] CPU: 1 PID: 8699 Comm: syz-executor111 Not tainted 4.20.0+ #8 [ 53.450258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.450263] Call Trace: [ 53.450278] dump_stack+0x1db/0x2d0 [ 53.450297] ? dump_stack_print_info.cold+0x20/0x20 [ 53.450314] ? kobject_put+0xca/0xe0 [ 53.463901] print_address_description.cold+0x7c/0x20d [ 53.463916] ? kobject_put+0xca/0xe0 [ 53.463929] ? kobject_put+0xca/0xe0 [ 53.463946] kasan_report.cold+0x1b/0x40 [ 53.463962] ? kobject_put+0xca/0xe0 [ 53.463982] __asan_report_load1_noabort+0x14/0x20 [ 53.472571] kobject_put+0xca/0xe0 [ 53.472591] put_device+0x20/0x30 [ 53.472607] hci_free_dev+0x19/0x20 [ 53.472624] vhci_release+0x7e/0xf0 [ 53.472643] __fput+0x3c5/0xb10 [ 53.472665] ? vhci_close_dev+0x50/0x50 [ 53.484602] ? get_max_files+0x20/0x20 [ 53.484616] ? task_work_run+0x1bb/0x2b0 [ 53.484632] ? trace_hardirqs_off_caller+0x300/0x300 [ 53.484648] ? do_raw_spin_trylock+0x270/0x270 [ 53.484667] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.484687] ____fput+0x16/0x20 [ 53.484700] task_work_run+0x1f4/0x2b0 [ 53.484717] ? task_work_cancel+0x2c0/0x2c0 [ 53.484734] ? __close_fd+0x25f/0x3d0 [ 53.493356] ? do_syscall_64+0x8c/0x800 [ 53.493378] exit_to_usermode_loop+0x32a/0x3b0 [ 53.493397] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.493414] ? syscall_trace_enter+0x12a0/0x12a0 [ 53.493431] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.493452] do_syscall_64+0x696/0x800 [ 53.502452] ? syscall_return_slowpath+0x5f0/0x5f0 [ 53.502471] ? prepare_exit_to_usermode+0x232/0x3b0 [ 53.502508] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.502531] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.502542] RIP: 0033:0x4054f1 [ 53.502563] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 94 17 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 53.502573] RSP: 002b:00007ffeb26e56e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 53.517724] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004054f1 [ 53.517733] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 53.517741] RBP: 0000000000000000 R08: 000000037ffffa00 R09: 0000000000000001 [ 53.517750] R10: 0000000000000001 R11: 0000000000000293 R12: 00000000006dbc2c [ 53.517760] R13: 20c49ba5e353f7cf R14: 000000000000002d R15: 0000000000000005 [ 53.517782] [ 53.517800] Allocated by task 8707: [ 53.517817] save_stack+0x45/0xd0 [ 53.517830] kasan_kmalloc+0xcf/0xe0 [ 53.517843] kmem_cache_alloc_trace+0x151/0x760 [ 53.517856] hci_alloc_dev+0x148/0x21a0 [ 53.517872] __vhci_create_device+0x101/0x5a0 [ 53.526322] vhci_write+0x2d0/0x470 [ 53.526336] __vfs_write+0x764/0xb40 [ 53.526347] vfs_write+0x20c/0x580 [ 53.526360] ksys_write+0x105/0x260 [ 53.526373] __x64_sys_write+0x73/0xb0 executing program [ 53.526387] do_syscall_64+0x1a3/0x800 [ 53.526401] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.526405] [ 53.526412] Freed by task 8699: [ 53.526425] save_stack+0x45/0xd0 [ 53.526439] __kasan_slab_free+0x102/0x150 [ 53.526451] kasan_slab_free+0xe/0x10 [ 53.526462] kfree+0xcf/0x230 [ 53.526478] bt_host_release+0x19/0x30 [ 53.533533] device_release+0x7d/0x210 [ 53.533547] kobject_put.cold+0x28f/0x2ec [ 53.533565] put_device+0x20/0x30 [ 53.533579] hci_unregister_dev+0x716/0x980 [ 53.533592] vhci_release+0x76/0xf0 [ 53.533605] __fput+0x3c5/0xb10 [ 53.533618] ____fput+0x16/0x20 [ 53.533630] task_work_run+0x1f4/0x2b0 [ 53.533643] exit_to_usermode_loop+0x32a/0x3b0 [ 53.533658] do_syscall_64+0x696/0x800 [ 53.540556] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.540567] [ 53.540579] The buggy address belongs to the object at ffff88808f9e8e00 [ 53.540579] which belongs to the cache kmalloc-8k of size 8192 [ 53.540591] The buggy address is located 4300 bytes inside of [ 53.540591] 8192-byte region [ffff88808f9e8e00, ffff88808f9eae00) [ 53.540596] The buggy address belongs to the page: [ 53.540609] page:ffffea00023e7a00 count:1 mapcount:0 mapping:ffff88812c3f2080 index:0x0 compound_mapcount: 0 [ 53.540625] flags: 0x1fffc0000010200(slab|head) [ 53.540645] raw: 01fffc0000010200 ffffea00023e6808 ffffea00023e8408 ffff88812c3f2080 [ 53.540661] raw: 0000000000000000 ffff88808f9e8e00 0000000100000001 0000000000000000 [ 53.540669] page dumped because: kasan: bad access detected [ 53.549252] kobject: 'rfkill468' (000000007192bbb6): kobject_cleanup, parent (null) [ 53.552572] [ 53.552592] Memory state around the buggy address: [ 53.552619] ffff88808f9e9d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 53.552629] ffff88808f9e9e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 53.552639] >ffff88808f9e9e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 53.552645] ^ [ 53.552656] ffff88808f9e9f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 53.552666] ffff88808f9e9f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 53.552671] ================================================================== [ 53.552676] Disabling lock debugging due to kernel taint [ 53.557815] kobject: 'rfkill471' (00000000171c66a4): kobject_add_internal: parent: 'hci2', set: 'devices' [ 53.558047] kobject: 'rfkill471' (00000000171c66a4): kobject_uevent_env [ 53.574355] kobject: 'hci6' (00000000cea6c5b0): fill_kobj_path: path = '/devices/virtual/bluetooth/hci6' [ 53.576738] kobject: 'hci5' (00000000d9130f82): kobject_uevent_env [ 53.588338] kobject: 'rfkill468' (000000007192bbb6): calling ktype release [ 53.592613] kobject: 'hci5' (00000000d9130f82): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' [ 53.616672] kobject: 'rfkill468': free name [ 53.621485] kobject: 'rfkill471' (00000000171c66a4): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill471' [ 53.644705] kobject: 'hci1' (000000006eef9329): kobject_uevent_env [ 53.654140] kobject: 'rfkill472' (000000003d2f7a84): kobject_add_internal: parent: 'hci0', set: 'devices' [ 53.697093] kobject: 'hci1' (000000006eef9329): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 53.698097] kobject: 'rfkill469' (0000000043e5b34a): kobject_uevent_env [ 53.703239] kobject: 'hci1' (000000006eef9329): kobject_cleanup, parent (null) [ 53.707301] kobject: 'rfkill469' (0000000043e5b34a): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill469' [ 53.719706] kobject: 'hci1' (000000006eef9329): calling ktype release [ 53.724087] kobject: 'rfkill472' (000000003d2f7a84): kobject_uevent_env [ 53.730563] kobject: 'rfkill470' (00000000155e553b): kobject_uevent_env [ 53.731164] kobject: 'rfkill472' (000000003d2f7a84): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill472' [ 53.735850] kobject: 'rfkill470' (00000000155e553b): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill470' [ 53.738525] kobject: 'rfkill473' (0000000082665f74): kobject_add_internal: parent: 'hci6', set: 'devices' [ 53.755086] kobject: 'hci1': free name [ 53.757017] kobject: 'rfkill473' (0000000082665f74): kobject_uevent_env [ 53.783085] kobject: 'hci1' (00000000a68c12d6): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 53.786346] kobject: 'rfkill472' (000000003d2f7a84): kobject_uevent_env [ 53.796596] kobject: 'hci1' (00000000a68c12d6): kobject_uevent_env [ 53.797927] kobject: 'rfkill472' (000000003d2f7a84): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill472' [ 53.808612] kobject: 'hci1' (00000000a68c12d6): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' [ 53.809623] kobject: 'rfkill473' (0000000082665f74): fill_kobj_path: path = '/devices/virtual/bluetooth/hci6/rfkill473' [ 53.883067] Kernel panic - not syncing: panic_on_warn set ... [ 53.886760] kobject: 'rfkill474' (000000007e6e1ef0): kobject_add_internal: parent: 'hci5', set: 'devices' [ 53.894512] CPU: 0 PID: 8699 Comm: syz-executor111 Tainted: G B 4.20.0+ #8 [ 53.894519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.894523] Call Trace: [ 53.894542] dump_stack+0x1db/0x2d0 [ 53.894557] ? dump_stack_print_info.cold+0x20/0x20 [ 53.894581] panic+0x2cb/0x589 [ 53.896597] kobject: 'rfkill474' (000000007e6e1ef0): kobject_uevent_env [ 53.901113] ? add_taint.cold+0x16/0x16 [ 53.901131] ? kobject_put+0xca/0xe0 [ 53.908556] kobject: 'rfkill474' (000000007e6e1ef0): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill474' [ 53.915828] ? preempt_schedule+0x4b/0x60 [ 53.915843] ? ___preempt_schedule+0x16/0x18 [ 53.915859] ? trace_hardirqs_on+0xb4/0x310 [ 53.923432] kobject: 'rfkill469' (0000000043e5b34a): kobject_cleanup, parent (null) [ 53.928897] ? kobject_put+0xca/0xe0 [ 53.928912] end_report+0x47/0x4f [ 53.928927] ? kobject_put+0xca/0xe0 [ 53.936311] kobject: 'rfkill470' (00000000155e553b): kobject_cleanup, parent (null) [ 53.943621] kasan_report.cold+0xe/0x40 [ 53.951003] kobject: 'rfkill472' (000000003d2f7a84): kobject_cleanup, parent (null) [ 53.956396] ? kobject_put+0xca/0xe0 [ 53.956418] __asan_report_load1_noabort+0x14/0x20 [ 53.966297] kobject: 'rfkill469' (0000000043e5b34a): calling ktype release [ 53.972840] kobject_put+0xca/0xe0 [ 53.972859] put_device+0x20/0x30 [ 53.982515] kobject: 'rfkill470' (00000000155e553b): calling ktype release [ 53.988770] hci_free_dev+0x19/0x20 [ 53.988784] vhci_release+0x7e/0xf0 [ 53.988810] __fput+0x3c5/0xb10 [ 53.995860] kobject: 'rfkill472' (000000003d2f7a84): calling ktype release [ 54.005417] ? vhci_close_dev+0x50/0x50 [ 54.005432] ? get_max_files+0x20/0x20 [ 54.005446] ? task_work_run+0x1bb/0x2b0 [ 54.009808] kobject: 'rfkill472': free name [ 54.020659] ? trace_hardirqs_off_caller+0x300/0x300 [ 54.020674] ? do_raw_spin_trylock+0x270/0x270 [ 54.020690] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.027084] kobject: 'rfkill470': free name [ 54.036721] ____fput+0x16/0x20 [ 54.036748] task_work_run+0x1f4/0x2b0 [ 54.036761] ? task_work_cancel+0x2c0/0x2c0 [ 54.046480] kobject: 'rfkill469': free name [ 54.053141] ? __close_fd+0x25f/0x3d0 [ 54.053166] ? do_syscall_64+0x8c/0x800 [ 54.053189] exit_to_usermode_loop+0x32a/0x3b0 [ 54.061553] kobject: 'hci0' (00000000c10d7c8a): kobject_uevent_env [ 54.072307] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.072323] ? syscall_trace_enter+0x12a0/0x12a0 [ 54.072339] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 54.079036] kobject: 'hci3' (00000000a330d066): kobject_uevent_env [ 54.085663] do_syscall_64+0x696/0x800 [ 54.085679] ? syscall_return_slowpath+0x5f0/0x5f0 [ 54.085696] ? prepare_exit_to_usermode+0x232/0x3b0 [ 54.092542] kobject: 'hci4' (00000000dce73b73): kobject_uevent_env [ 54.103341] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 54.103361] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.103374] RIP: 0033:0x4054f1 [ 54.114385] kobject: 'hci3' (00000000a330d066): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' [ 54.123970] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 94 17 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 54.123978] RSP: 002b:00007ffeb26e56e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 54.127936] kobject: 'hci0' (00000000c10d7c8a): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' [ 54.134591] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004054f1 [ 54.134598] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 54.134606] RBP: 0000000000000000 R08: 000000037ffffa00 R09: 0000000000000001 [ 54.134613] R10: 0000000000000001 R11: 0000000000000293 R12: 00000000006dbc2c [ 54.134625] R13: 20c49ba5e353f7cf R14: 000000000000002d R15: 0000000000000005 [ 54.144604] kobject: 'hci3' (00000000a330d066): kobject_cleanup, parent (null) [ 54.158316] Kernel Offset: disabled [ 54.580640] Rebooting in 86400 seconds..