[Bug 76191] New: vt-d intel IOMMU - "jump label: negative count!"

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=76191

            Bug ID: 76191
           Summary: vt-d intel IOMMU - "jump label: negative count!"
           Product: Virtualization
           Version: unspecified
    Kernel Version: Linux venus 3.12-1-amd64 #1 SMP Debian 3.12.9-1
                    (2014-02-01) x86_64 GNU/Linux
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: kvm
          Assignee: virtualization_kvm@kernel-bugs.osdl.org
          Reporter: dev@psyrium.com.au
        Regression: No

Hi,
Trying to passthough an intel I350 ethernet port. gives me this error.
Unfortunately this error doesn't appear to be indexed on search engines (unless
I'm mistaken - forgive me).
So I'll post it here.
kvm works fine otherwise. I'm assuming this relatively old machine would have
good support. Thanks.

Machine:
    Hardware name: Dell Inc. Precision WorkStation T5500  /0D883F, BIOS A16
05/28/2013


Commands:

    echo "8086 1521" > /sys/bus/pci/drivers/pci-stub/new_id
    echo 0000:04:00.0 > /sys/bus/pci/devices/0000:04:00.0/driver/unbind
    echo 0000:04:00.0 > /sys/bus/pci/drivers/pci-stub/bind
    qemu-system-x86_64 -enable-kvm -device pci-assign,host=04:00.0
/scratch/base.raw

Trace:

    May 14 22:48:00 venus kernel: [  321.338524] ------------[ cut here
]------------
    May 14 22:48:00 venus kernel: [  321.338534] WARNING: CPU: 7 PID: 6248 at
/build/linux-lq6CKI/linux-3.12.9/kernel/jump_label.c:81
kvm_free_lapic+0x5c/0x90 [kvm]()
    May 14 22:48:00 venus kernel: [  321.338535] jump label: negative count!
    May 14 22:48:00 venus kernel: [  321.338536] Modules linked in: pci_stub
bridge stp llc tun xt_LOG xt_limit xt_multiport xt_conntrack ipt_MASQUERADE
iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
xt_tcpudp iptable_filter ip_tables x_tables fuse ppdev lp loop xts gf128mul
dm_crypt arc4 snd_hda_codec_hdmi snd_hda_codec_analog zfs(PO) zunicode(PO)
zavl(PO) zcommon(PO) znvpair(PO) spl(O) ath9k_htc ath9k_common ath9k_hw ath
mac80211 nvidia(PO) usblp iTCO_wdt dell_wmi iTCO_vendor_support sparse_keymap
dcdbas kvm_intel kvm snd_hda_intel cfg80211 snd_hda_codec coretemp rfkill
snd_hwdep snd_pcm pcspkr evdev snd_page_alloc snd_seq snd_seq_device snd_timer
parport_pc i2c_i801 lpc_ich mfd_core wmi parport shpchp button snd acpi_cpufreq
processor soundcore thermal_sys i7core_edac edac_core ext4 crc16 mbcache jbd2
dm_mod hid_logitech_dj usbhid hid usb_storage sd_mod sg crct10dif_generic
sr_mod crc_t10dif crct10dif_common cdrom crc32c_intel mptsas ahci mptscsih
libahci mptbase libata scsi_transport_sas uhci_hcd scsi_mod ehci_pci tg3
ehci_hcd libphy igb usbcore ptp usb_common pps_core i2c_algo_bit i2c_core dca
    May 14 22:48:00 venus kernel: [  321.338602] CPU: 7 PID: 6248 Comm:
qemu-system-x86 Tainted: P        W IO 3.12-1-amd64 #1 Debian 3.12.9-1
    May 14 22:48:00 venus kernel: [  321.338604] Hardware name: Dell Inc.
Precision WorkStation T5500  /0D883F, BIOS A16 05/28/2013
    May 14 22:48:00 venus kernel: [  321.338606]  0000000000000009
ffffffff8148be76 ffff881158d35d50 ffffffff8105b582
    May 14 22:48:00 venus kernel: [  321.338610]  ffff8811b2bb8080
ffff881158d35da0 ffff88115da58130 ffff88115da58140
    May 14 22:48:00 venus kernel: [  321.338613]  ffff8811d5058500
ffffffff8105b5e7 ffffffff8170387f ffff881100000018
    May 14 22:48:00 venus kernel: [  321.338617] Call Trace:
    May 14 22:48:00 venus kernel: [  321.338621]  [<ffffffff8148be76>] ?
dump_stack+0x41/0x51
    May 14 22:48:00 venus kernel: [  321.338625]  [<ffffffff8105b582>] ?
warn_slowpath_common+0x72/0x90
    May 14 22:48:00 venus kernel: [  321.338629]  [<ffffffff8105b5e7>] ?
warn_slowpath_fmt+0x47/0x50
    May 14 22:48:00 venus kernel: [  321.338632]  [<ffffffff8107e92b>] ?
hrtimer_try_to_cancel+0x3b/0xd0
    May 14 22:48:00 venus kernel: [  321.338644]  [<ffffffffa065131c>] ?
kvm_free_lapic+0x5c/0x90 [kvm]
    May 14 22:48:00 venus kernel: [  321.338656]  [<ffffffffa063af1e>] ?
kvm_arch_vcpu_uninit+0x1e/0x80 [kvm]
    May 14 22:48:00 venus kernel: [  321.338664]  [<ffffffffa06220e8>] ?
kvm_vcpu_uninit+0x18/0x30 [kvm]
    May 14 22:48:00 venus kernel: [  321.338670]  [<ffffffffa0c5bd4e>] ?
vmx_free_vcpu+0x3e/0x60 [kvm_intel]
    May 14 22:48:00 venus kernel: [  321.338681]  [<ffffffffa063b12b>] ?
kvm_arch_destroy_vm+0xeb/0x1e0 [kvm]
    May 14 22:48:00 venus kernel: [  321.338690]  [<ffffffffa0624f5b>] ?
kvm_put_kvm+0xfb/0x1b0 [kvm]
    May 14 22:48:00 venus kernel: [  321.338699]  [<ffffffffa062503f>] ?
kvm_vcpu_release+0xf/0x20 [kvm]
    May 14 22:48:00 venus kernel: [  321.338702]  [<ffffffff81174b7a>] ?
__fput+0xca/0x220
    May 14 22:48:00 venus kernel: [  321.338706]  [<ffffffff81078924>] ?
task_work_run+0xb4/0xd0
    May 14 22:48:00 venus kernel: [  321.338709]  [<ffffffff8105d8d3>] ?
do_exit+0x2c3/0xa50
    May 14 22:48:00 venus kernel: [  321.338712]  [<ffffffff81069ea5>] ?
signal_wake_up_state+0x15/0x30
    May 14 22:48:00 venus kernel: [  321.338716]  [<ffffffff8105e0c4>] ?
do_group_exit+0x34/0xa0
    May 14 22:48:00 venus kernel: [  321.338719]  [<ffffffff8105e13b>] ?
SyS_exit_group+0xb/0x10
    May 14 22:48:00 venus kernel: [  321.338722]  [<ffffffff81498fb9>] ?
system_call_fastpath+0x16/0x1b
    May 14 22:48:00 venus kernel: [  321.338724] ---[ end trace
a1cbbecc08565580 ]---

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