RDX: 0000000000000032 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f92e00581d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff34b1256f R14: 00007f92e0058300 R15: 0000000000022000 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.5:28700] Modules linked in: irq event stamp: 11400 hardirqs last enabled at (11399): [] kvm_wait arch/x86/kernel/kvm.c:600 [inline] hardirqs last enabled at (11399): [] kvm_wait+0x14b/0x240 arch/x86/kernel/kvm.c:580 hardirqs last disabled at (11400): [] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (388): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (287): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (287): [] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 0 PID: 28700 Comm: syz-executor.5 Not tainted 4.14.258-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888095710000 task.stack: ffff888052ec8000 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 RSP: 0018:ffff888052ecfb20 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e127c RBX: ffffffff89dd65ec RCX: 1ffff11012ae211f RDX: dffffc0000000000 RSI: ffff8880957108d8 RDI: ffff888095710884 RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 R13: dffffc0000000000 R14: ffffffff89dd65ed R15: ffffed10174869e8 FS: 00007f92e0058700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f92e0057ff8 CR3: 000000004918a000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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:272 hci_send_monitor_ctrl_event+0x3dd/0x500 net/bluetooth/hci_sock.c:402 mgmt_send_event+0x2b3/0x330 net/bluetooth/mgmt_util.c:86 mgmt_index_event net/bluetooth/mgmt.c:256 [inline] mgmt_index_removed+0x200/0x240 net/bluetooth/mgmt.c:6600 hci_sock_bind+0xe00/0x12b0 net/bluetooth/hci_sock.c:1186 SYSC_bind net/socket.c:1489 [inline] SyS_bind+0x174/0x1f0 net/socket.c:1475 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f92e16e2e99 RSP: 002b:00007f92e0058168 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00007f92e17f5f60 RCX: 00007f92e16e2e99 RDX: 0000000000000032 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f92e00581d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff34b1256f R14: 00007f92e0058300 R15: 0000000000022000 Code: ff 5a fa e9 4f ff ff ff 48 89 ef e8 3d ff 5a fa eb 93 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 04 99 63 00 fb f4 90 e9 07 00 00 00 0f 00 2d f4 98 63 00 f4 c3 90 90 41 55 41 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 28701 Comm: syz-executor.4 Not tainted 4.14.258-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88804f28a040 task.stack: ffff888097740000 RIP: 0010:__read_once_size include/linux/compiler.h:185 [inline] RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline] RIP: 0010:queued_write_lock_slowpath+0xcb/0x1d0 kernel/locking/qrwlock.c:139 RSP: 0018:ffff888097747d38 EFLAGS: 00000206 RAX: 0000000000000101 RBX: ffffffff89dd65e8 RCX: 00000000000046f5 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff89dd65e8 RBP: ffffffff89dd65ec R08: ffffffff8b9c1268 R09: 000000000004058f R10: ffff88804f28a8f0 R11: ffff88804f28a040 R12: 0000000000000003 R13: fffffbfff13bacbd R14: 00000000000000ff R15: ffffffff8863c0a0 FS: 00007fdbc1a30700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f346749a058 CR3: 0000000057db7000 CR4: 00000000003406e0 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:2034 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: 0033:0x7fdbc30bae99 RSP: 002b:00007fdbc1a30108 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fdbc31cdf60 RCX: 00007fdbc30bae99 RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001f RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec7d1c0ff R14: 00007fdbc1a30300 R15: 0000000000022000 Code: 75 dc 49 89 dd 49 89 dc 41 be 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 ---------------- Code disassembly (best guess): 0: ff 5a fa lcall *-0x6(%rdx) 3: e9 4f ff ff ff jmpq 0xffffff57 8: 48 89 ef mov %rbp,%rdi b: e8 3d ff 5a fa callq 0xfa5aff4d 10: eb 93 jmp 0xffffffa5 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: e9 07 00 00 00 jmpq 0x29 22: 0f 00 2d 04 99 63 00 verw 0x639904(%rip) # 0x63992d 29: fb sti 2a: f4 hlt * 2b: c3 retq <-- trapping instruction 2c: 90 nop 2d: e9 07 00 00 00 jmpq 0x39 32: 0f 00 2d f4 98 63 00 verw 0x6398f4(%rip) # 0x63992d 39: f4 hlt 3a: c3 retq 3b: 90 nop 3c: 90 nop 3d: 41 55 push %r13 3f: 41 rex.B