http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1544
Summary: [SR-IOV] VF can not be enabled in Dom0
Product: Xen
Version: unstable
Platform: x86-64
OS/Version: Linux
Status: NEW
Severity: major
Priority: P1
Component: Hypervisor
AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
ReportedBy: jiajun.xu@xxxxxxxxx
Environment:
------------
Service Arch (ia32/ia32e/IA64): ia32e
Guest Arch (ia32/ia32e/IA64):
Guest OS Type (Linux/Windows):
Change Set: 20453
Hardware: Nehalem-EP, 2-port/4-port Kawela
Other:
xen-changeset: 20453:bec27eb6f72c
pvops git:
commit b9160b12ecc7148aa080b8d4ecf35f75d257f9d9
Merge: 69003a1... aa228e3...
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
ioemu git:
commit f72b6e0ffc3bb84d4442c5a7493bffbdce2a4468
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date: Wed Nov 4 17:07:57 2009 +0000
tboot changeset:
changeset: 176:e57acd4d1460
tag: tip
user: Shane Wang <shane.wang@xxxxxxxxx>
date: Fri Oct 16 04:03:14 2009 -0700
summary: Fixed a timeout bug in 163
Bug detailed description:
--------------------------
With latest xen, VF can not be enabled in Dom0. When executing command
"modprobe igb max_vfs=7", igb driver can be loaded but no VF can be enabled.
The dom0 kernel version is 2.6.31.5.
igb driver will call trace:
############
[ 133.391858] BUG: unable to handle kernel NULL pointer dereference at
0000000000000044
[ 133.391868] IP: [<ffffffffa00aee61>] igb_reset+0x11c/0x1dd [igb]
[ 133.391881] PGD 14a28067 PUD 1a99e067 PMD 0
[ 133.391889] Oops: 0002 [#1] SMP
[ 133.391895] last sysfs file:
/sys/devices/system/cpu/cpu23/cache/index2/shared_cpu_map
[ 133.391901] CPU 8
[ 133.391905] Modules linked in: igbvf igb(+) sg via_rhine sr_mod cdrom
pata_acpi ata_generic ata_piix ide_gd_mod ide_core ahci libata sd_mod scsi_mod
uhci_hcd ohci_hcd ehci_hcd [last unloaded: igb]
[ 133.391938] Pid: 10200, comm: modprobe Not tainted 2.6.31.5 #1 X8DTN
[ 133.391943] RIP: e030:[<ffffffffa00aee61>] [<ffffffffa00aee61>]
igb_reset+0x11c/0x1dd [igb]
[ 133.391954] RSP: e02b:ffff88001a8c5c88 EFLAGS: 00010202
[ 133.391958] RAX: 0000000000000000 RBX: 000000000000000a RCX:
0000000000000001
[ 133.391963] RDX: 0000000000000046 RSI: ffff88001bdea9c0 RDI:
ffff88001bdea580
[ 133.391969] RBP: ffff88001a8c5ca8 R08: ffff88001bdea580 R09:
ffff88001bdea938
[ 133.391974] R10: 0000000000000000 R11: ffff88001bdea580 R12:
ffff88001bdea580
[ 133.391979] R13: 0000000000000008 R14: ffff88001bdea918 R15:
ffff88001bdea918
[ 133.391988] FS: 00007f4fe8a436e0(0000) GS:ffffc900000c0000(0000)
knlGS:0000000000000000
[ 133.391994] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 133.391998] CR2: 0000000000000044 CR3: 000000001c8ea000 CR4:
0000000000002660
[ 133.392004] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 133.392009] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 133.392015] Process modprobe (pid: 10200, threadinfo ffff88001a8c4000, task
ffff88001dc88790)
[ 133.392020] Stack:
[ 133.392022] ffff88001bdea000 ffff88001f150000 0000000000000008
ffff88001bdea580
[ 133.392031] <0> ffff88001a8c5d48 ffffffffa00baff3 ffff88001a8c5d18
ffff88001bc93140
[ 133.392040] <0> ffff88001a8c5cf8 ffffffff8114bcbb ffff88001a8c5d18
0000000000000000
[ 133.392051] Call Trace:
[ 133.392060] [<ffffffffa00baff3>] igb_probe+0x842/0xb42 [igb]
[ 133.392069] [<ffffffff8114bcbb>] ? sysfs_add_one+0x16/0xc0
[ 133.392076] [<ffffffff81209d1e>] local_pci_probe+0x12/0x16
[ 133.392081] [<ffffffff8120a808>] pci_device_probe+0x5c/0x88
[ 133.392089] [<ffffffff812d58a8>] ? driver_sysfs_add+0x4d/0x73
[ 133.392095] [<ffffffff812d59f9>] driver_probe_device+0xb2/0x136
[ 133.392101] [<ffffffff812d5ad1>] __driver_attach+0x54/0x77
[ 133.392107] [<ffffffff812d5a7d>] ? __driver_attach+0x0/0x77
[ 133.392113] [<ffffffff812d5a7d>] ? __driver_attach+0x0/0x77
[ 133.392119] [<ffffffff812d5088>] bus_for_each_dev+0x49/0x78
[ 133.392125] [<ffffffff812d5859>] driver_attach+0x1c/0x1e
[ 133.392130] [<ffffffff812d4b97>] bus_add_driver+0xba/0x21f
[ 133.392136] [<ffffffff812d5e36>] driver_register+0x9e/0x115
[ 133.392142] [<ffffffff8120aa54>] __pci_register_driver+0x50/0xad
[ 133.392152] [<ffffffffa00c4000>] ? igb_init_module+0x0/0x5b [igb]
[ 133.392161] [<ffffffffa00c4059>] igb_init_module+0x59/0x5b [igb]
[ 133.392168] [<ffffffff8100a0e7>] do_one_initcall+0x59/0x159
[ 133.392175] [<ffffffff81093ad2>] sys_init_module+0xcb/0x1fd
[ 133.392182] [<ffffffff81032c42>] system_call_fastpath+0x16/0x1b
[ 133.392187] Code: 66 c7 46 08 ff ff c6 46 0a 01 31 d2 89 46 0c 41 83 bc 24
20 0b 00 00 00 75 15 eb 44 49 8b 84 24 28 0b 00 00 48 01 d0 48 83 c2 46 <c6> 40
44 00 89 c8 48 ff c1 41 3b 84 24 20 0b 00 00 72 de 4c 89
[ 133.392262] RIP [<ffffffffa00aee61>] igb_reset+0x11c/0x1dd [igb]
[ 133.392272] RSP <ffff88001a8c5c88>
[ 133.392275] CR2: 0000000000000044
[ 133.392280] ---[ end trace d43f75facb27584b ]---
############
And xen log shows:
############
(XEN) _PCT: descriptor=130, length=12, space_id=127, bit_width=16,
bit_offset=0, reserved=0, address=408
(XEN) _PSS: state_count=8
(XEN) State0: 2395MHz 13875mW 10us 10us 0x13 0x13
(XEN) State1: 2394MHz 11875mW 10us 10us 0x12 0x12
(XEN) State2: 2261MHz 10000mW 10us 10us 0x11 0x11
(XEN) State3: 2128MHz 8250mW 10us 10us 0x10 0x10
(XEN) State4: 1995MHz 6750mW 10us 10us 0xf 0xf
(XEN) State5: 1862MHz 5500mW 10us 10us 0xe 0xe
(XEN) State6: 1729MHz 4375mW 10us 10us 0xd 0xd
(XEN) State7: 1596MHz 3500mW 10us 10us 0xc 0xc
(XEN) _PSD: num_entries=5 rev=0 domain=1 coord_type=254 num_processors=12
(XEN) _PPC: 0
(XEN) xen_pminfo: @acpi_cpufreq_cpu_init,HARDWARE addr space
(XEN) CPU 23 initialization completed
(XEN) irq.c:1186:d0 Cannot bind IRQ 0 to guest. Will not share with others.
(XEN) irq.c:1186:d0 Cannot bind IRQ 0 to guest. Will not share with others.
(XEN) irq.c:1186:d0 Cannot bind IRQ 0 to guest. Will not share with others.
(XEN) irq.c:1186:d0 Cannot bind IRQ 0 to guest. Will not share with others.
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=16, irq=16
(XEN) ioapic_guest_write: new_entry=0001a010
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=23, irq=23
(XEN) ioapic_guest_write: new_entry=0001a017
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=19, irq=19
(XEN) ioapic_guest_write: new_entry=0001a013
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=18, irq=18
(XEN) ioapic_guest_write: new_entry=0001a012
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=19, irq=19
(XEN) ioapic_guest_write: new_entry=0001a013
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=16, irq=16
(XEN) ioapic_guest_write: new_entry=0001a010
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=16, irq=16
(XEN) ioapic_guest_write: new_entry=0001a010
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=18, irq=18
(XEN) ioapic_guest_write: new_entry=0001a012
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=19, irq=19
(XEN) ioapic_guest_write: new_entry=0001a013
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=16, irq=16
(XEN) ioapic_guest_write: new_entry=0001a010
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=16, irq=16
(XEN) ioapic_guest_write: new_entry=0001a010
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=16, irq=16
(XEN) ioapic_guest_write: new_entry=0001a010
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=18, irq=18
(XEN) ioapic_guest_write: new_entry=0001a012
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=19, irq=19
(XEN) ioapic_guest_write: new_entry=0001a013
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=16, irq=16
(XEN) ioapic_guest_write: new_entry=0001a010
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=16, irq=16
(XEN) ioapic_guest_write: new_entry=0001a010
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) io_apic.c:2251:
(XEN) ioapic_guest_write: apic=0, pin=16, irq=16
(XEN) ioapic_guest_write: new_entry=0001a010
(XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use IRQ!
(XEN) [VT-D]iommu.c:1241:d0 domain_context_mapping:PCIe: bdf = 1:10.0
(XEN) PCI add Virtual Function 01:10.0
(XEN) [VT-D]iommu.c:1241:d0 domain_context_mapping:PCIe: bdf = 1:10.2
(XEN) PCI add Virtual Function 01:10.2
(XEN) [VT-D]iommu.c:1241:d0 domain_context_mapping:PCIe: bdf = 1:10.4
(XEN) PCI add Virtual Function 01:10.4
(XEN) [VT-D]iommu.c:1241:d0 domain_context_mapping:PCIe: bdf = 1:10.6
(XEN) PCI add Virtual Function 01:10.6
(XEN) [VT-D]iommu.c:1241:d0 domain_context_mapping:PCIe: bdf = 1:11.0
(XEN) PCI add Virtual Function 01:11.0
(XEN) [VT-D]iommu.c:1241:d0 domain_context_mapping:PCIe: bdf = 1:11.2
(XEN) PCI add Virtual Function 01:11.2
(XEN) [VT-D]iommu.c:1241:d0 domain_context_mapping:PCIe: bdf = 1:11.4
(XEN) PCI add Virtual Function 01:11.4
(XEN) [VT-D]iommu.c:1355:d0 domain_context_unmap:PCIe: bdf = 1:10.0
(XEN) PCI remove device 01:10.0
(XEN) [VT-D]iommu.c:1355:d0 domain_context_unmap:PCIe: bdf = 1:10.2
(XEN) PCI remove device 01:10.2
(XEN) [VT-D]iommu.c:1355:d0 domain_context_unmap:PCIe: bdf = 1:10.4
(XEN) PCI remove device 01:10.4
(XEN) [VT-D]iommu.c:1355:d0 domain_context_unmap:PCIe: bdf = 1:10.6
(XEN) PCI remove device 01:10.6
(XEN) [VT-D]iommu.c:1355:d0 domain_context_unmap:PCIe: bdf = 1:11.0
(XEN) PCI remove device 01:11.0
(XEN) [VT-D]iommu.c:1355:d0 domain_context_unmap:PCIe: bdf = 1:11.2
(XEN) PCI remove device 01:11.2
(XEN) [VT-D]iommu.c:1355:d0 domain_context_unmap:PCIe: bdf = 1:11.4
(XEN) PCI remove device 01:11.4
############
igb driver version:
[root@vt-nhm7 ~]# modinfo igb
filename: /lib/modules/2.6.31.5/kernel/drivers/net/igb/igb.ko
version: 1.3.16-k2
license: GPL
description: Intel(R) Gigabit Ethernet Network Driver
author: Intel Corporation, <e1000-devel@xxxxxxxxxxxxxxxxxxxxx>
srcversion: F04798DBD1C1CD0846A999D
alias: pci:v00008086d000010D6sv*sd*bc*sc*i*
alias: pci:v00008086d000010A9sv*sd*bc*sc*i*
alias: pci:v00008086d000010A7sv*sd*bc*sc*i*
alias: pci:v00008086d000010E8sv*sd*bc*sc*i*
alias: pci:v00008086d000010E7sv*sd*bc*sc*i*
alias: pci:v00008086d000010E6sv*sd*bc*sc*i*
alias: pci:v00008086d0000150Asv*sd*bc*sc*i*
alias: pci:v00008086d000010C9sv*sd*bc*sc*i*
depends:
vermagic: 2.6.31.5 SMP mod_unload
parm: max_vfs:Maximum number of virtual functions to allocate per
physical function (uint)
lspci output for the Kawela on the system:
[root@vt-nhm7 ~]# lspci | grep Eth
01:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
01:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
08:00.0 Ethernet controller: Intel Corporation Device 10e8 (rev 01)
08:00.1 Ethernet controller: Intel Corporation Device 10e8 (rev 01)
0a:00.0 Ethernet controller: Intel Corporation Device 10e8 (rev 01)
0a:00.1 Ethernet controller: Intel Corporation Device 10e8 (rev 01)
11:01.0 Ethernet controller: VIA Technologies, Inc. VT6105/VT6106S [Rhine-III]
(rev 86)
13:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
13:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
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