IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor777:8974] Modules linked in: irq event stamp: 9662 hardirqs last enabled at (9661): [<ffffffff812307db>] kvm_wait arch/x86/kernel/kvm.c:600 [inline] hardirqs last enabled at (9661): [<ffffffff812307db>] kvm_wait+0x14b/0x240 arch/x86/kernel/kvm.c:580 hardirqs last disabled at (9662): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (662): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (477): [<ffffffff81321cf3>] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (477): [<ffffffff81321cf3>] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 1 PID: 8974 Comm: syz-executor777 Not tainted 4.14.280-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888092d7a100 task.stack: ffff888093ac8000 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 RSP: 0018:ffff888093acf960 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1314 RBX: ffffffff89ddb66c RCX: 1ffff110125af549 RDX: dffffc0000000000 RSI: ffff888092d7aa28 RDI: ffff888092d7a984 RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282 R13: dffffc0000000000 R14: ffffffff89ddb66d R15: ffffed10174a69e8 FS: 0000555555a80300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 0000000092df0000 CR4: 00000000003406e0 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_event net/bluetooth/mgmt.c:270 [inline] unblock_device+0x135/0x1f0 net/bluetooth/mgmt.c:3840 hci_mgmt_cmd net/bluetooth/hci_sock.c:1590 [inline] hci_sock_sendmsg+0x175b/0x1d00 net/bluetooth/hci_sock.c:1725 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 sock_write_iter+0x22c/0x370 net/socket.c:925 call_write_iter include/linux/fs.h:1780 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x44c/0x630 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fadfd73e419 RSP: 002b:00007ffc00326878 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fadfd73e419 RDX: 000000000000000d RSI: 00000000200000c0 RDI: 0000000000000004 RBP: 0000000000000003 R08: 0000000000000150 R09: 0000000000000150 R10: 0000000000000150 R11: 0000000000000246 R12: 0000555555a802b8 R13: 0000000000000011 R14: 00007ffc003268e0 R15: 00007ffc00326898 Code: 94 5a fa e9 4f ff ff ff 48 89 ef e8 bd 94 5a fa eb 93 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 24 23 63 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d 14 23 63 00 f4 c3 90 90 41 55 41 ---------------- Code disassembly (best guess): 0: 94 xchg %eax,%esp 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 94 5a fa callq 0xfa5a94cd 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 24 23 63 00 verw 0x632324(%rip) # 0x63234d 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 14 23 63 00 verw 0x632314(%rip) # 0x63234d 39: f4 hlt 3a: c3 retq 3b: 90 nop 3c: 90 nop 3d: 41 55 push %r13 3f: 41 rex.B