RDX: 0000000000000007 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007fe6e6b8a1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc6d9ecb2f R14: 00007fe6e6b8a300 R15: 0000000000022000 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u5:1:8007] Modules linked in: irq event stamp: 24672 hardirqs last enabled at (24671): [] kvm_wait arch/x86/kernel/kvm.c:600 [inline] hardirqs last enabled at (24671): [] kvm_wait+0x14b/0x240 arch/x86/kernel/kvm.c:580 hardirqs last disabled at (24672): [] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (14948): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (14907): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (14907): [] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 0 PID: 8007 Comm: kworker/u5:1 Not tainted 4.14.231-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci4 connectable_update_work task: ffff888056e802c0 task.stack: ffff888056e88000 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 RSP: 0018:ffff888056e8fab0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e125c RBX: ffffffff89dd442c RCX: 1ffff1100add0181 RDX: dffffc0000000000 RSI: ffff888056e80be8 RDI: ffff888056e80b44 RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 R13: dffffc0000000000 R14: ffffffff89dd442d R15: ffffed10174855d8 FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000024a9708 CR3: 00000000939cb000 CR4: 00000000001426f0 DR0: 0000000020000280 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000090602 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] kvm_wait arch/x86/kernel/kvm.c:600 [inline] kvm_wait+0x179/0x240 arch/x86/kernel/kvm.c:580 pv_wait arch/x86/include/asm/paravirt.h:679 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:447 [inline] __pv_queued_spin_lock_slowpath+0x722/0x910 kernel/locking/qspinlock.c:465 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:669 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:52 [inline] queued_spin_lock include/asm-generic/qspinlock.h:90 [inline] queued_read_lock_slowpath+0x150/0x190 kernel/locking/qrwlock.c:90 hci_send_to_channel+0x3c/0x200 net/bluetooth/hci_sock.c:261 hci_send_monitor_ctrl_event+0x3dd/0x500 net/bluetooth/hci_sock.c:391 mgmt_send_event+0x2b3/0x330 net/bluetooth/mgmt_util.c:86 mgmt_limited_event net/bluetooth/mgmt.c:260 [inline] new_settings net/bluetooth/mgmt.c:1089 [inline] mgmt_set_connectable_complete+0x299/0x310 net/bluetooth/mgmt.c:1352 connectable_update_work+0xbf/0xf0 net/bluetooth/hci_request.c:1597 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 2a 5c fa e9 4f ff ff ff 48 89 ef e8 8d 2a 5c fa eb 93 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 94 e4 64 00 fb f4 90 e9 07 00 00 00 0f 00 2d 84 e4 64 00 f4 c3 90 90 41 55 41 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 20401 Comm: syz-executor.5 Not tainted 4.14.231-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809f916580 task.stack: ffff8881c55c8000 RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline] RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline] RIP: 0010:queued_write_lock_slowpath+0xd5/0x1d0 kernel/locking/qrwlock.c:139 RSP: 0018:ffff8881c55cfd38 EFLAGS: 00000206 RAX: 0000000000000000 RBX: ffffffff89dd4428 RCX: 00000000000024f1 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff89dd4428 RBP: ffffffff89dd442c R08: ffffffff8b9a2248 R09: 00000000000405a2 R10: ffff88809f916e30 R11: ffff88809f916580 R12: 0000000000000003 R13: fffffbfff13ba885 R14: 00000000000000ff R15: ffffffff8863a320 FS: 00007f31864d0700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000051a5d0 CR3: 000000009db96000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:134 [inline] do_raw_write_lock+0xc2/0x1d0 kernel/locking/spinlock_debug.c:203 bt_sock_link+0x1f/0x120 net/bluetooth/af_bluetooth.c:143 hci_sock_create+0x15c/0x1d0 net/bluetooth/hci_sock.c:2017 bt_sock_create+0x13b/0x280 net/bluetooth/af_bluetooth.c:130 __sock_create+0x303/0x620 net/socket.c:1275 sock_create net/socket.c:1315 [inline] SYSC_socket net/socket.c:1345 [inline] SyS_socket+0xd1/0x1b0 net/socket.c:1325 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007f31864d0128 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001f RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fffc4d04edf R14: 00007f31864d0300 R15: 0000000000022000 Code: ff 00 00 00 49 c1 ed 03 41 83 e4 07 48 b8 00 00 00 00 00 fc ff df 49 01 c5 41 83 c4 03 eb 02 f3 90 41 0f b6 45 00 41 38 c4 7c 08 <84> c0 0f 85 9e 00 00 00 8b 03 83 f8 01 75 e5 f0 44 0f b1 33 83