audit: type=1800 audit(1642571194.678:128): pid=17129 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="bus" dev="sda1" ino=13895 res=0 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:17138] Modules linked in: irq event stamp: 11110 hardirqs last enabled at (11109): [] kvm_wait arch/x86/kernel/kvm.c:600 [inline] hardirqs last enabled at (11109): [] kvm_wait+0x14b/0x240 arch/x86/kernel/kvm.c:580 hardirqs last disabled at (11110): [] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (600): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (399): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (399): [] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 0 PID: 17138 Comm: syz-executor.4 Not tainted 4.14.262-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888051c60500 task.stack: ffff8880530c0000 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 RSP: 0018:ffff8880530c7b40 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e127c RBX: ffffffff89dd666c RCX: 1ffff1100a38c1bf RDX: dffffc0000000000 RSI: ffff888051c60dd8 RDI: ffff888051c60d84 RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 R13: dffffc0000000000 R14: ffffffff89dd666d R15: ffffed10174869e8 FS: 00007f79b434f700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000096453000 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_added+0x1d5/0x210 net/bluetooth/mgmt.c:6565 hci_sock_bind+0x10a5/0x12b0 net/bluetooth/hci_sock.c:1201 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: 0033:0x7f79b59d9fe9 RSP: 002b:00007f79b434f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00007f79b5aecf60 RCX: 00007f79b59d9fe9 RDX: 0000000000000006 RSI: 0000000020000240 RDI: 0000000000000005 RBP: 00007f79b5a3408d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec648835f R14: 00007f79b434f300 R15: 0000000000022000 Code: fa 5a fa e9 4f ff ff ff 48 89 ef e8 bd fa 5a fa eb 93 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d a4 94 63 00 fb f4 90 e9 07 00 00 00 0f 00 2d 94 94 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: 17140 Comm: syz-executor.4 Not tainted 4.14.262-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888055576580 task.stack: ffff8880526f0000 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:ffff8880526f7d38 EFLAGS: 00000206 RAX: 0000000000000101 RBX: ffffffff89dd6668 RCX: 0000000000001e9b RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff89dd6668 RBP: ffffffff89dd666c R08: ffffffff8b9acf98 R09: 00000000000405a4 R10: ffff888055576e30 R11: ffff888055576580 R12: 0000000000000003 R13: fffffbfff13baccd R14: 00000000000000ff R15: ffffffff8863c1e0 FS: 00007f79b432e700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005614a2acb8c8 CR3: 0000000096453000 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: 0033:0x7f79b59d9fe9 RSP: 002b:00007f79b432e108 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f79b5aed030 RCX: 00007f79b59d9fe9 RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001f RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec648835f R14: 00007f79b432e300 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: fa cli 1: 5a pop %rdx 2: fa cli 3: e9 4f ff ff ff jmpq 0xffffff57 8: 48 89 ef mov %rbp,%rdi b: e8 bd fa 5a fa callq 0xfa5afacd 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 a4 94 63 00 verw 0x6394a4(%rip) # 0x6394cd 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 94 94 63 00 verw 0x639494(%rip) # 0x6394cd 39: f4 hlt 3a: c3 retq 3b: 90 nop 3c: 90 nop 3d: 41 55 push %r13 3f: 41 rex.B