[ 408.987386] ? kasan_check_write+0x14/0x20 [ 408.992161] ? do_raw_spin_lock+0xd0/0x240 [ 408.996766] worker_thread+0x85/0xb60 [ 409.000755] ? __kthread_parkme+0x37/0x1c0 [ 409.005249] kthread+0x347/0x410 [ 409.009260] ? process_one_work+0x15a0/0x15a0 [ 409.014282] ? kthread_park+0x100/0x100 [ 409.018510] ret_from_fork+0x24/0x30 [ 409.029672] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 409.045711] Bluetooth: hci5: failed to register connection device [ 409.133549] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 409.142900] CPU: 1 PID: 8512 Comm: kworker/u5:7 Not tainted 4.19.184-syzkaller #0 [ 409.151068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 409.161241] Workqueue: hci5 hci_rx_work [ 409.165405] Call Trace: [ 409.168000] dump_stack+0x17c/0x226 [ 409.171669] sysfs_warn_dup.cold.0+0x17/0x26 [ 409.176268] sysfs_create_dir_ns+0x1c2/0x270 [ 409.180891] ? sysfs_create_mount_point+0x80/0x80 [ 409.186620] ? lock_downgrade+0x860/0x860 [ 409.191472] ? do_raw_spin_unlock+0x177/0x260 [ 409.197286] kobject_add_internal+0x257/0x8d0 [ 409.202458] kobject_add+0x10f/0x170 [ 409.207370] ? kobject_add_internal+0x8d0/0x8d0 [ 409.212652] ? __lockdep_init_map+0x105/0x590 [ 409.218610] ? get_device+0x20/0x20 [ 409.222813] ? lockdep_init_map+0x9/0x10 [ 409.227880] ? __raw_spin_lock_init+0x2d/0x100 [ 409.232979] device_add+0x33e/0x16b0 [ 409.237233] ? _dev_warn+0x100/0x100 [ 409.241178] ? hci_sync_conn_complete_evt.isra.112+0x169/0xa50 [ 409.247432] ? lock_downgrade+0x860/0x860 [ 409.251595] hci_conn_add_sysfs+0x8e/0x160 [ 409.255840] hci_sync_conn_complete_evt.isra.112+0x8bc/0xa50 [ 409.262437] hci_event_packet+0x1a08/0x6890 [ 409.268525] ? mark_held_locks+0x130/0x130 [ 409.273626] ? __lock_acquire+0x764/0x47c0 [ 409.277859] ? hci_loglink_complete_evt.isra.127+0x700/0x700 [ 409.284088] ? mark_held_locks+0xc7/0x130 [ 409.288404] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 409.294011] ? skb_dequeue+0x14d/0x1f0 [ 409.298295] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 409.302944] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 409.308730] ? trace_hardirqs_on+0x28/0x190 [ 409.313213] ? kasan_check_read+0x11/0x20 [ 409.318432] hci_rx_work+0x385/0xa70 [ 409.322244] process_one_work+0x7b9/0x15a0 [ 409.326794] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 409.332070] ? lock_acquire+0x180/0x3a0 [ 409.336304] ? kasan_check_write+0x14/0x20 [ 409.340788] ? do_raw_spin_lock+0xd0/0x240 [ 409.345211] worker_thread+0x85/0xb60 [ 409.349667] ? __kthread_parkme+0x37/0x1c0 [ 409.354050] kthread+0x347/0x410 [ 409.357696] ? process_one_work+0x15a0/0x15a0 [ 409.362273] ? kthread_park+0x100/0x100 [ 409.366318] ret_from_fork+0x24/0x30 [ 409.384213] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 409.397888] Bluetooth: hci5: failed to register connection device [ 409.404633] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 409.414464] CPU: 1 PID: 8512 Comm: kworker/u5:7 Not tainted 4.19.184-syzkaller #0 [ 409.422758] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 409.433992] Workqueue: hci5 hci_rx_work [ 409.438404] Call Trace: [ 409.441938] dump_stack+0x17c/0x226 [ 409.446281] sysfs_warn_dup.cold.0+0x17/0x26 [ 409.451846] sysfs_create_dir_ns+0x1c2/0x270 [ 409.456877] ? sysfs_create_mount_point+0x80/0x80 [ 409.462947] ? lock_downgrade+0x860/0x860 [ 409.467538] ? do_raw_spin_unlock+0x177/0x260 [ 409.472515] kobject_add_internal+0x257/0x8d0 [ 409.477897] kobject_add+0x10f/0x170 [ 409.482372] ? kobject_add_internal+0x8d0/0x8d0 [ 409.487683] ? __lockdep_init_map+0x105/0x590 [ 409.492664] ? get_device+0x20/0x20 [ 409.496781] ? lockdep_init_map+0x9/0x10 [ 409.501177] ? __raw_spin_lock_init+0x2d/0x100 [ 409.506289] device_add+0x33e/0x16b0 [ 409.510943] ? _dev_warn+0x100/0x100 [ 409.519490] ? hci_sync_conn_complete_evt.isra.112+0x169/0xa50 [ 409.528592] ? lock_downgrade+0x860/0x860 [ 409.533777] hci_conn_add_sysfs+0x8e/0x160 [ 409.538577] hci_sync_conn_complete_evt.isra.112+0x8bc/0xa50 [ 409.545009] hci_event_packet+0x1a08/0x6890 [ 409.550421] ? mark_held_locks+0x130/0x130 [ 409.556313] ? __lock_acquire+0x764/0x47c0 [ 409.560953] ? hci_loglink_complete_evt.isra.127+0x700/0x700 [ 409.567453] ? mark_held_locks+0xc7/0x130 [ 409.572403] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 409.578055] ? skb_dequeue+0x14d/0x1f0 [ 409.582483] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 409.587683] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 409.594191] ? trace_hardirqs_on+0x28/0x190 [ 409.599538] ? kasan_check_read+0x11/0x20 [ 409.604743] hci_rx_work+0x385/0xa70 [ 409.609950] process_one_work+0x7b9/0x15a0 [ 409.614472] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 409.620220] ? lock_acquire+0x180/0x3a0 [ 409.625614] ? kasan_check_write+0x14/0x20 [ 409.630190] ? do_raw_spin_lock+0xd0/0x240 [ 409.634777] worker_thread+0x85/0xb60 [ 409.638578] ? __kthread_parkme+0x37/0x1c0 [ 409.643755] kthread+0x347/0x410 [ 409.648163] ? process_one_work+0x15a0/0x15a0 [ 409.652825] ? kthread_park+0x100/0x100 [ 409.657487] ret_from_fork+0x24/0x30 [ 409.664958] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 409.678568] Bluetooth: hci5: failed to register connection device [ 409.704586] kasan: CONFIG_KASAN_INLINE enabled [ 409.709671] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 409.725834] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 409.732682] CPU: 0 PID: 8474 Comm: syz-executor.2 Not tainted 4.19.184-syzkaller #0 [ 409.742178] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 409.753055] RIP: 0010:klist_next+0x48/0x450 [ 409.757641] Code: 48 89 fb 48 83 ec 18 80 3c 02 00 0f 85 e1 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 8d 7c 24 50 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b4 02 00 00 4c 8d 6b 08 4d 8b 7c 24 50 48 b8 00 [ 409.778006] RSP: 0018:ffff888092a6f698 EFLAGS: 00010206 [ 409.784146] RAX: dffffc0000000000 RBX: ffff888092a6f718 RCX: 0000000000000000 [ 409.791994] RDX: 000000000000000a RSI: ffff888092a6f718 RDI: 0000000000000050 [ 409.799430] RBP: ffff888092a6f6d8 R08: ffff888090f72990 R09: 0000000000000000 [ 409.807380] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 409.815648] R13: 0000000000000000 R14: ffffffff86d84280 R15: dffffc0000000000 [ 409.824006] FS: 0000000001ad7400(0000) GS:ffff8880ba200000(0000) knlGS:0000000000000000 [ 409.832521] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 409.838773] CR2: 00005595febe2270 CR3: 00000000a4726000 CR4: 00000000001406f0 [ 409.847734] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 409.856092] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 409.864010] Call Trace: [ 409.866895] ? synchronize_rcu_expedited+0xb0/0xb0 [ 409.872633] ? bt_link_release+0x20/0x20 [ 409.876912] device_find_child+0xb1/0x170 [ 409.881346] ? device_for_each_child+0x140/0x140 [ 409.886480] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 409.892284] ? trace_hardirqs_on+0x28/0x190 [ 409.896868] ? bt_link_release+0x20/0x20 [ 409.901445] hci_conn_del_sysfs+0xaa/0x150 [ 409.906208] hci_conn_cleanup+0x1ff/0x4e0 [ 409.910448] hci_conn_del+0x22c/0x6b0 [ 409.914329] hci_conn_hash_flush+0x171/0x230 [ 409.919242] hci_dev_do_close+0x57e/0xe10 [ 409.923646] ? lock_downgrade+0x860/0x860 [ 409.928123] ? hci_dev_open+0x200/0x200 [ 409.932442] ? kasan_check_write+0x14/0x20 [ 409.936860] hci_unregister_dev+0x167/0x890 [ 409.941360] vhci_release+0x6b/0xe0 [ 409.945234] __fput+0x249/0x7f0 [ 409.948739] ____fput+0x9/0x10 [ 409.952085] task_work_run+0x108/0x180 [ 409.956695] do_exit+0xa6a/0x2d90 [ 409.960289] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 409.966159] ? mm_update_next_owner+0x680/0x680 [ 409.971262] ? wait_for_completion_io+0x20/0x20 [ 409.976890] ? get_signal+0x2ba/0x1970 [ 409.981047] ? _raw_spin_unlock_irq+0x27/0x90 [ 409.985940] ? get_signal+0x2ba/0x1970 [ 409.990048] do_group_exit+0xf8/0x2c0 [ 409.994458] get_signal+0x30b/0x1970 [ 409.998813] ? __vfs_read+0x440/0x880 [ 410.003057] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 410.008413] do_signal+0x87/0x1870 [ 410.012109] ? setup_sigcontext+0x7d0/0x7d0 [ 410.016714] ? rw_verify_area+0xb8/0x2b0 [ 410.020942] ? vfs_read+0xff/0x300 [ 410.024692] ? ksys_read+0x103/0x260 [ 410.028787] ? exit_to_usermode_loop+0x3a/0x1e0 [ 410.033793] ? do_syscall_64+0x413/0x4e0 [ 410.038075] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 410.042996] ? exit_to_usermode_loop+0x3a/0x1e0 [ 410.047676] ? trace_hardirqs_on+0x28/0x190 [ 410.053053] exit_to_usermode_loop+0x159/0x1e0 [ 410.058865] do_syscall_64+0x413/0x4e0 [ 410.063800] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 410.070200] RIP: 0033:0x418d7c [ 410.073475] Code: Bad RIP value. [ 410.076917] RSP: 002b:00007fffa84e3f50 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 410.085287] RAX: fffffffffffffe00 RBX: 00007fffa84e3ff0 RCX: 0000000000418d7c [ 410.093094] RDX: 0000000000000050 RSI: 0000000000568020 RDI: 00000000000000f9 [ 410.101657] RBP: 0000000000000003 R08: 0000000000000000 R09: 0079746972756365 [ 410.109732] R10: 00007fffa84e3910 R11: 0000000000000246 R12: 0000000000000032 [ 410.117821] R13: 0000000000000000 R14: 0000000000000003 R15: 00007fffa84e4030 [ 410.125959] Modules linked in: [ 410.141027] ---[ end trace eb179032c444eb13 ]--- [ 410.147246] RIP: 0010:klist_next+0x48/0x450 [ 410.152853] Code: 48 89 fb 48 83 ec 18 80 3c 02 00 0f 85 e1 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 8d 7c 24 50 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b4 02 00 00 4c 8d 6b 08 4d 8b 7c 24 50 48 b8 00 [ 410.174418] RSP: 0018:ffff888092a6f698 EFLAGS: 00010206 [ 410.179957] RAX: dffffc0000000000 RBX: ffff888092a6f718 RCX: 0000000000000000 [ 410.187751] RDX: 000000000000000a RSI: ffff888092a6f718 RDI: 0000000000000050 [ 410.195904] RBP: ffff888092a6f6d8 R08: ffff888090f72990 R09: 0000000000000000 [ 410.203854] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 410.212408] R13: 0000000000000000 R14: ffffffff86d84280 R15: dffffc0000000000 [ 410.220456] FS: 0000000001ad7400(0000) GS:ffff8880ba200000(0000) knlGS:0000000000000000 [ 410.230793] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 410.238327] CR2: 00007f87efaf1810 CR3: 00000000a8402000 CR4: 00000000001406f0 [ 410.246635] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 410.256197] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 410.263833] Kernel panic - not syncing: Fatal exception [ 410.271324] Kernel Offset: disabled [ 410.275276] Rebooting in 86400 seconds..