[Bug 121711] New: KVM virtual machine using libvirtd crashes

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=121711

            Bug ID: 121711
           Summary: KVM virtual machine using libvirtd crashes
           Product: Virtualization
           Version: unspecified
    Kernel Version: 4.6.2-1
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: kvm
          Assignee: virtualization_kvm@kernel-bugs.osdl.org
          Reporter: eric@ericbond.net
        Regression: No

I'm running a qemu/kvm stack with one windows 10 vm running. The vm will
eventually crash, though the crashes are random enough to happen anytime. 

After a crash, I attempt to force shutdown the vm using virsh stop. I receive
this output: 

error: Disconnected from qemu:///system due to keepalive timeout
error: Failed to destroy domain win7
error: internal error: connection closed due to keepalive timeout

and all virsh commands fail after that.

I attempt to restart the host linux machine, but receive this message when
shutting down:

------------[ cut here ]------------
kernel BUG at drivers/pci/msi.c:368!
invalid opcode: 0000 [#1] PREEMPT SMP 
Modules linked in: cdc_acm rfcomm xt_CHECKSUM ipt_MASQUERADE
nf_nat_masquerade_ipv4 tun xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6
ipt_REJECT nf_reject_ipv4 xt_conntrack ip_s
media snd_seq_device snd_hda_codec_realtek snd_hda_codec_generic nls_iso8859_1
nls_cp437 vfat fat iTCO_wdt iTCO_vendor_support nouveau intel_rapl
x86_pkg_temp_thermal intel_powercla
tpm_tis i2c_designware_platform i2c_designware_core tpm 8250_dw
spi_pxa2xx_platform acpi_pad processor button usbip_host usbip_core ip_tables
x_tables ext4 crc16 jbd2 mbcache dm_mod
CPU: 2 PID: 629 Comm: libvirtd Tainted: G        W       4.6.2-1-ARCH #1
Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./Z97 Extreme6, BIOS
P2.50 10/06/2015
task: ffff8808188ed580 ti: ffff8802c6364000 task.ti: ffff8802c6364000
RIP: 0010:[<ffffffff8134842b>]  [<ffffffff8134842b>] free_msi_irqs+0x5b/0x1c0
RSP: 0018:ffff8802c6367a30  EFLAGS: 00010282
RAX: ffff88027e48ac00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000026 RDI: ffff88081f400158
RBP: ffff8802c6367a60 R08: ffff88081f400000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88081b9c0298
R13: ffff88081b9c0000 R14: ffff880818945120 R15: ffff88081a7a1440
FS:  00007fb7f2a5e700(0000) GS:ffff88083fa80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007facfd24f750 CR3: 0000000817908000 CR4: 00000000001406e0
Stack: 
ffff8802c6367a40 ffff88081b9c0000 0000000000000008 0000000000000008
0000000000000008 ffff88081a7a1440 ffff8802c6367ac8 ffffffff8134896a
ffff88081b9c0298 0000000000000008 ffff88081b9c0098 00000007a01948b7
Call Trace:
[<ffffffff8134896a>] pci_enable_msix+0x3da/0x450
[<ffffffff81348a0c>] pci_enable_msix_range+0x2c/0x60
[<ffffffffa0181b13>] xhci_run+0x183/0x740 [xhci_hcd]
[<ffffffffa00af112>] usb_add_hcd+0x332/0x9b0 [usbcore]
[<ffffffffa00c134f>] usb_hcd_pci_probe+0x1af/0x4a0 [usbcore]
[<ffffffffa01ee68c>] xhci_pci_probe+0x2c/0x220 [xhci_pci]
[<ffffffff8132e215>] local_pci_probe+0x45/0xa0
[<ffffffff8132e160>] ? pci_match_device+0xe0/0x110
[<ffffffff8132f419>] pci_device_probe+0x109/0x160
[<ffffffff814127dc>] driver_probe_device+0x22c/0x440
[<ffffffff81412b74>] __device_attach_driver+0x94/0x110
[<ffffffff81412ae0>] ? __driver_attach+0xf0/0xf0
[<ffffffff81410347>] bus_for_each_drv+0x67/0xb0
[<ffffffff8141243d>] __device_attach+0xdd/0x160
[<ffffffff814124d0>] device_attach+0x10/0x20
[<ffffffff81410d25>] bus_rescan_devices_helper+0x35/0x60
[<ffffffff81410dd2>] store_drivers_probe+0x32/0x60
[<ffffffff8140fe95>] bus_attr_store+0x25/0x30
[<ffffffff812749e7>] sysfs_kf_write+0x37/0x40
[<ffffffff81273f9c>] kernfs_fop_write+0x11c/0x170
[<ffffffff811f6397>] __vfs_write+0x37/0x100
[<ffffffff811f72a3>] vfs_write+0xa3/0x190
[<ffffffff811f8745>] SyS_write+0x55/0xc0
[<ffffffff815c7272>] entry_SYSCALL_64_fastpath+0x1a/0xa4
Code: 85 ff 74 29 41 8b 46 14 85 c0 74 21 31 db eb 0d 83 c3 01 41 39 5e 14 76
14 41 8b 7e 10 01 df e8 dc c9 d8 ff 48 83 78 70 00 74 e5 <0f> 0b 4d 8b 36 4d 39
f4 75 c7 49 8b bd 88 02
RIP  [<ffffffff8134842b>] free_msi_irqs+0x5b/0x1c0
RSP <ffff8802c6367a30>
---[ end trace 0df29045d094c8f4 ]---

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