Public bug reported:
I'm on OFTC and Freenode as Snow-Man if folks want to chat further or if
there's anything I can run with 'crash' to provide additional
information.
This is a KVM guest running under a physical box which is running the
same kernel (43.72)
I've downgraded the KVM guest to Linux tamriel 3.13.0-40-generic
#69-Ubuntu SMP Thu Nov 13 17:53:56 UTC 2014 x86_64 x86_64 x86_64
GNU/Linux; hopefully this will be stable but I'll report back if it's
not. Other guests are running the 43.72 kernel and have not crashed,
but most are single-cpu while the guest which is crashing is 4-cpu.
I have crash installed and a dump file. Here is the dmesg output from
the crash:
[ 15.407890] general protection fault: 0000 [#1] SMP
[ 15.411159] Modules linked in: ttm drm_kms_helper kvm_amd drm kvm
syscopyarea sysfillrect sysimgblt i2c_piix4 serio_raw lp mac_hid parport
psmouse floppy virtio_scsi
[ 15.411159] CPU: 3 PID: 2398 Comm: smtp Not tainted 3.13.0-43-generic
#72-Ubuntu
[ 15.411159] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.411159] task: ffff8800d8776000 ti: ffff880036a14000 task.ti:
ffff880036a14000
[ 15.411159] RIP: 0010:[<ffffffff816c0eb2>] [<ffffffff816c0eb2>]
ip6_xmit+0x1a2/0x410
[ 15.411159] RSP: 0018:ffff880036a15b18 EFLAGS: 00010286
[ 15.411159] RAX: 5709000000000000 RBX: ffff8800dbbb94e8 RCX: 0000000000010000
[ 15.411159] RDX: ffffffff8189cc00 RSI: 0000000000000028 RDI: ffff8800d96126c0
[ 15.411159] RBP: ffff880036a15b78 R08: 0000000000000000 R09: 00000000000165d6
[ 15.411159] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800d9bfa6c0
[ 15.411159] R13: ffff8800d96126c0 R14: 0000000000000060 R15: ffff880036a15b90
[ 15.411159] FS: 00007f02749c3740(0000) GS:ffff88011fd80000(0000)
knlGS:0000000000000000
[ 15.411159] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 15.411159] CR2: 00007f027620d048 CR3: 00000000da851000 CR4: 00000000000006e0
[ 15.428200] Stack:
[ 15.428200] ffff880036a15b78 ffffffff816f0ac8 ffff8800d8ea18e8
0000000000000adc
[ 15.430445] ffffffff81cda780 06ff880036a15fd8 ffff880036a15ba4
ffff8800d9bfa6c0
[ 15.430673] ffff8800dbbb94e8 ffff8800d9bfada0 0000000000000020
ffff8800d96126c0
[ 15.433514] Call Trace:
[ 15.433514] [<ffffffff816f0ac8>] ? inet6_csk_route_socket+0x128/0x200
[ 15.433514] [<ffffffff816f0c9d>] inet6_csk_xmit+0x7d/0xd0
[ 15.433514] [<ffffffff81677519>] tcp_transmit_skb+0x469/0x8d0
[ 15.433514] [<ffffffff81677ac0>] tcp_write_xmit+0x140/0xb10
[ 15.433514] [<ffffffff81676bc4>] ? tcp_current_mss+0x54/0x80
[ 15.433514] [<ffffffff816787c0>] tcp_push_one+0x30/0x40
[ 15.433514] [<ffffffff8166a101>] tcp_sendmsg+0x4e1/0xdb0
[ 15.433514] [<ffffffff81693624>] inet_sendmsg+0x64/0xb0
[ 15.433514] [<ffffffff813137f7>] ? apparmor_socket_sendmsg+0x17/0x20
[ 15.433514] [<ffffffff8160b63e>] sock_aio_write+0xfe/0x130
[ 15.433514] [<ffffffff811bd4ba>] do_sync_write+0x5a/0x90
[ 15.433514] [<ffffffff811bdd3d>] vfs_write+0x1ad/0x1f0
[ 15.433514] [<ffffffff811be679>] SyS_write+0x49/0xa0
[ 15.433514] [<ffffffff811d3125>] ? SyS_poll+0x65/0x100
[ 15.433514] [<ffffffff817316ad>] system_call_fastpath+0x1a/0x1f
[ 15.433514] Code: 49 8b 45 20 ff 50 20 39 43 68 77 6d 48 8b 43 58 48 83 e0
fe 48 8b 80 48 01 00 00 48 85 c0 0f 84 51 02 00 00 48 8b 80 68 02 00 00 <65> 48
ff 40 28 8b 53 68 65 48 01 50 30 48 8b 44 24 20 48 8b 80
[ 15.433514] RIP [<ffffffff816c0eb2>] ip6_xmit+0x1a2/0x410
[ 15.433514] RSP <ffff880036a15b18>
Here's it the output from crash:
KERNEL: /usr/lib/debug/boot/vmlinux-3.13.0-43-generic
DUMPFILE: /var/crash/201412191519/dump.201412191519 [PARTIAL DUMP]
CPUS: 4
DATE: Fri Dec 19 15:19:18 2014
UPTIME: 00:00:15
LOAD AVERAGE: 0.58, 0.13, 0.04
TASKS: 229
NODENAME: tamriel
RELEASE: 3.13.0-43-generic
VERSION: #72-Ubuntu SMP Mon Dec 8 19:35:06 UTC 2014
MACHINE: x86_64 (2700 Mhz)
MEMORY: 4 GB
PANIC: ""
PID: 2398
COMMAND: "smtp"
TASK: ffff8800d8776000 [THREAD_INFO: ffff880036a14000]
CPU: 3
STATE: TASK_RUNNING (PANIC)
Probably not really interesting, but here's the lspci -vnvn output:
00:00.0 Host bridge [0600]: Intel Corporation 440FX - 82441FX PMC [Natoma]
[8086:1237] (rev 02)
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
00:01.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton
II] [8086:7000]
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
00:01.1 IDE interface [0101]: Intel Corporation 82371SB PIIX3 IDE
[Natoma/Triton II] [8086:7010] (prog-if 80 [Master])
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable)
[size=8]
Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable)
Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable)
[size=8]
Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable)
Region 4: I/O ports at c0a0 [size=16]
Kernel driver in use: ata_piix
00:01.2 USB controller [0c03]: Intel Corporation 82371SB PIIX3 USB
[Natoma/Triton II] [8086:7020] (rev 01) (prog-if 00 [UHCI])
Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin D routed to IRQ 11
Region 4: I/O ports at c040 [size=32]
Kernel driver in use: uhci_hcd
00:01.3 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113]
(rev 03)
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 9
Kernel driver in use: piix4_smbus
00:02.0 VGA compatible controller [0300]: Cirrus Logic GD 5446 [1013:00b8]
(prog-if 00 [VGA controller])
Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
Physical Slot: 2
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Region 0: Memory at fc000000 (32-bit, prefetchable) [size=32M]
Region 1: Memory at febf0000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at febe0000 [disabled] [size=64K]
00:03.0 Ethernet controller [0200]: Red Hat, Inc Virtio network device
[1af4:1000]
Subsystem: Red Hat, Inc Device [1af4:0001]
Physical Slot: 3
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at c060 [size=32]
Region 1: Memory at febf1000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at febc0000 [disabled] [size=128K]
Capabilities: [40] MSI-X: Enable+ Count=3 Masked-
Vector table: BAR=1 offset=00000000
PBA: BAR=1 offset=00000800
Kernel driver in use: virtio-pci
00:04.0 SCSI storage controller [0100]: Red Hat, Inc Virtio SCSI [1af4:1004]
Subsystem: Red Hat, Inc Device [1af4:0008]
Physical Slot: 4
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at c000 [size=64]
Region 1: Memory at febf2000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] MSI-X: Enable+ Count=4 Masked-
Vector table: BAR=1 offset=00000000
PBA: BAR=1 offset=00000800
Kernel driver in use: virtio-pci
00:06.0 Unclassified device [00ff]: Red Hat, Inc Virtio memory balloon
[1af4:1002]
Subsystem: Red Hat, Inc Device [1af4:0005]
Physical Slot: 6
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at c080 [size=32]
Kernel driver in use: virtio-pci
root@tamriel:/var/crash/201412191519# lspci -vnvn
00:00.0 Host bridge [0600]: Intel Corporation 440FX - 82441FX PMC [Natoma]
[8086:1237] (rev 02)
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
00:01.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton
II] [8086:7000]
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
00:01.1 IDE interface [0101]: Intel Corporation 82371SB PIIX3 IDE
[Natoma/Triton II] [8086:7010] (prog-if 80 [Master])
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable)
[size=8]
Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable)
Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable)
[size=8]
Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable)
Region 4: I/O ports at c0a0 [size=16]
Kernel driver in use: ata_piix
00:01.2 USB controller [0c03]: Intel Corporation 82371SB PIIX3 USB
[Natoma/Triton II] [8086:7020] (rev 01) (prog-if 00 [UHCI])
Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin D routed to IRQ 11
Region 4: I/O ports at c040 [size=32]
Kernel driver in use: uhci_hcd
00:01.3 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113]
(rev 03)
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 9
Kernel driver in use: piix4_smbus
00:02.0 VGA compatible controller [0300]: Cirrus Logic GD 5446 [1013:00b8]
(prog-if 00 [VGA controller])
Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
Physical Slot: 2
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Region 0: Memory at fc000000 (32-bit, prefetchable) [size=32M]
Region 1: Memory at febf0000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at febe0000 [disabled] [size=64K]
00:03.0 Ethernet controller [0200]: Red Hat, Inc Virtio network device
[1af4:1000]
Subsystem: Red Hat, Inc Device [1af4:0001]
Physical Slot: 3
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at c060 [size=32]
Region 1: Memory at febf1000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at febc0000 [disabled] [size=128K]
Capabilities: [40] MSI-X: Enable+ Count=3 Masked-
Vector table: BAR=1 offset=00000000
PBA: BAR=1 offset=00000800
Kernel driver in use: virtio-pci
00:04.0 SCSI storage controller [0100]: Red Hat, Inc Virtio SCSI [1af4:1004]
Subsystem: Red Hat, Inc Device [1af4:0008]
Physical Slot: 4
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at c000 [size=64]
Region 1: Memory at febf2000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] MSI-X: Enable+ Count=4 Masked-
Vector table: BAR=1 offset=00000000
PBA: BAR=1 offset=00000800
Kernel driver in use: virtio-pci
00:06.0 Unclassified device [00ff]: Red Hat, Inc Virtio memory balloon
[1af4:1002]
Subsystem: Red Hat, Inc Device [1af4:0005]
Physical Slot: 6
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at c080 [size=32]
Kernel driver in use: virtio-pci
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1404374
Title:
Apparently ipv6-related crash in Linux version 3.13.0-43-generic
(buildd@tipua) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu 1) )
#72-Ubuntu SMP Mon Dec 8 19:35:06 UTC 2014 (Ubuntu
3.13.0-43.72-generic 3.13.11.11)
Status in linux package in Ubuntu:
New
Bug description:
I'm on OFTC and Freenode as Snow-Man if folks want to chat further or
if there's anything I can run with 'crash' to provide additional
information.
This is a KVM guest running under a physical box which is running the
same kernel (43.72)
I've downgraded the KVM guest to Linux tamriel 3.13.0-40-generic
#69-Ubuntu SMP Thu Nov 13 17:53:56 UTC 2014 x86_64 x86_64 x86_64
GNU/Linux; hopefully this will be stable but I'll report back if it's
not. Other guests are running the 43.72 kernel and have not crashed,
but most are single-cpu while the guest which is crashing is 4-cpu.
I have crash installed and a dump file. Here is the dmesg output from
the crash:
[ 15.407890] general protection fault: 0000 [#1] SMP
[ 15.411159] Modules linked in: ttm drm_kms_helper kvm_amd drm kvm
syscopyarea sysfillrect sysimgblt i2c_piix4 serio_raw lp mac_hid parport
psmouse floppy virtio_scsi
[ 15.411159] CPU: 3 PID: 2398 Comm: smtp Not tainted 3.13.0-43-generic
#72-Ubuntu
[ 15.411159] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.411159] task: ffff8800d8776000 ti: ffff880036a14000 task.ti:
ffff880036a14000
[ 15.411159] RIP: 0010:[<ffffffff816c0eb2>] [<ffffffff816c0eb2>]
ip6_xmit+0x1a2/0x410
[ 15.411159] RSP: 0018:ffff880036a15b18 EFLAGS: 00010286
[ 15.411159] RAX: 5709000000000000 RBX: ffff8800dbbb94e8 RCX:
0000000000010000
[ 15.411159] RDX: ffffffff8189cc00 RSI: 0000000000000028 RDI:
ffff8800d96126c0
[ 15.411159] RBP: ffff880036a15b78 R08: 0000000000000000 R09:
00000000000165d6
[ 15.411159] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff8800d9bfa6c0
[ 15.411159] R13: ffff8800d96126c0 R14: 0000000000000060 R15:
ffff880036a15b90
[ 15.411159] FS: 00007f02749c3740(0000) GS:ffff88011fd80000(0000)
knlGS:0000000000000000
[ 15.411159] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 15.411159] CR2: 00007f027620d048 CR3: 00000000da851000 CR4:
00000000000006e0
[ 15.428200] Stack:
[ 15.428200] ffff880036a15b78 ffffffff816f0ac8 ffff8800d8ea18e8
0000000000000adc
[ 15.430445] ffffffff81cda780 06ff880036a15fd8 ffff880036a15ba4
ffff8800d9bfa6c0
[ 15.430673] ffff8800dbbb94e8 ffff8800d9bfada0 0000000000000020
ffff8800d96126c0
[ 15.433514] Call Trace:
[ 15.433514] [<ffffffff816f0ac8>] ? inet6_csk_route_socket+0x128/0x200
[ 15.433514] [<ffffffff816f0c9d>] inet6_csk_xmit+0x7d/0xd0
[ 15.433514] [<ffffffff81677519>] tcp_transmit_skb+0x469/0x8d0
[ 15.433514] [<ffffffff81677ac0>] tcp_write_xmit+0x140/0xb10
[ 15.433514] [<ffffffff81676bc4>] ? tcp_current_mss+0x54/0x80
[ 15.433514] [<ffffffff816787c0>] tcp_push_one+0x30/0x40
[ 15.433514] [<ffffffff8166a101>] tcp_sendmsg+0x4e1/0xdb0
[ 15.433514] [<ffffffff81693624>] inet_sendmsg+0x64/0xb0
[ 15.433514] [<ffffffff813137f7>] ? apparmor_socket_sendmsg+0x17/0x20
[ 15.433514] [<ffffffff8160b63e>] sock_aio_write+0xfe/0x130
[ 15.433514] [<ffffffff811bd4ba>] do_sync_write+0x5a/0x90
[ 15.433514] [<ffffffff811bdd3d>] vfs_write+0x1ad/0x1f0
[ 15.433514] [<ffffffff811be679>] SyS_write+0x49/0xa0
[ 15.433514] [<ffffffff811d3125>] ? SyS_poll+0x65/0x100
[ 15.433514] [<ffffffff817316ad>] system_call_fastpath+0x1a/0x1f
[ 15.433514] Code: 49 8b 45 20 ff 50 20 39 43 68 77 6d 48 8b 43 58 48 83 e0
fe 48 8b 80 48 01 00 00 48 85 c0 0f 84 51 02 00 00 48 8b 80 68 02 00 00 <65> 48
ff 40 28 8b 53 68 65 48 01 50 30 48 8b 44 24 20 48 8b 80
[ 15.433514] RIP [<ffffffff816c0eb2>] ip6_xmit+0x1a2/0x410
[ 15.433514] RSP <ffff880036a15b18>
Here's it the output from crash:
KERNEL: /usr/lib/debug/boot/vmlinux-3.13.0-43-generic
DUMPFILE: /var/crash/201412191519/dump.201412191519 [PARTIAL DUMP]
CPUS: 4
DATE: Fri Dec 19 15:19:18 2014
UPTIME: 00:00:15
LOAD AVERAGE: 0.58, 0.13, 0.04
TASKS: 229
NODENAME: tamriel
RELEASE: 3.13.0-43-generic
VERSION: #72-Ubuntu SMP Mon Dec 8 19:35:06 UTC 2014
MACHINE: x86_64 (2700 Mhz)
MEMORY: 4 GB
PANIC: ""
PID: 2398
COMMAND: "smtp"
TASK: ffff8800d8776000 [THREAD_INFO: ffff880036a14000]
CPU: 3
STATE: TASK_RUNNING (PANIC)
Probably not really interesting, but here's the lspci -vnvn output:
00:00.0 Host bridge [0600]: Intel Corporation 440FX - 82441FX PMC [Natoma]
[8086:1237] (rev 02)
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
00:01.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton
II] [8086:7000]
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
00:01.1 IDE interface [0101]: Intel Corporation 82371SB PIIX3 IDE
[Natoma/Triton II] [8086:7010] (prog-if 80 [Master])
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable)
[size=8]
Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable)
Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable)
[size=8]
Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable)
Region 4: I/O ports at c0a0 [size=16]
Kernel driver in use: ata_piix
00:01.2 USB controller [0c03]: Intel Corporation 82371SB PIIX3 USB
[Natoma/Triton II] [8086:7020] (rev 01) (prog-if 00 [UHCI])
Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin D routed to IRQ 11
Region 4: I/O ports at c040 [size=32]
Kernel driver in use: uhci_hcd
00:01.3 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113]
(rev 03)
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 9
Kernel driver in use: piix4_smbus
00:02.0 VGA compatible controller [0300]: Cirrus Logic GD 5446 [1013:00b8]
(prog-if 00 [VGA controller])
Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
Physical Slot: 2
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Region 0: Memory at fc000000 (32-bit, prefetchable) [size=32M]
Region 1: Memory at febf0000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at febe0000 [disabled] [size=64K]
00:03.0 Ethernet controller [0200]: Red Hat, Inc Virtio network device
[1af4:1000]
Subsystem: Red Hat, Inc Device [1af4:0001]
Physical Slot: 3
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at c060 [size=32]
Region 1: Memory at febf1000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at febc0000 [disabled] [size=128K]
Capabilities: [40] MSI-X: Enable+ Count=3 Masked-
Vector table: BAR=1 offset=00000000
PBA: BAR=1 offset=00000800
Kernel driver in use: virtio-pci
00:04.0 SCSI storage controller [0100]: Red Hat, Inc Virtio SCSI [1af4:1004]
Subsystem: Red Hat, Inc Device [1af4:0008]
Physical Slot: 4
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at c000 [size=64]
Region 1: Memory at febf2000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] MSI-X: Enable+ Count=4 Masked-
Vector table: BAR=1 offset=00000000
PBA: BAR=1 offset=00000800
Kernel driver in use: virtio-pci
00:06.0 Unclassified device [00ff]: Red Hat, Inc Virtio memory balloon
[1af4:1002]
Subsystem: Red Hat, Inc Device [1af4:0005]
Physical Slot: 6
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at c080 [size=32]
Kernel driver in use: virtio-pci
root@tamriel:/var/crash/201412191519# lspci -vnvn
00:00.0 Host bridge [0600]: Intel Corporation 440FX - 82441FX PMC [Natoma]
[8086:1237] (rev 02)
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
00:01.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton
II] [8086:7000]
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
00:01.1 IDE interface [0101]: Intel Corporation 82371SB PIIX3 IDE
[Natoma/Triton II] [8086:7010] (prog-if 80 [Master])
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable)
[size=8]
Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable)
Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable)
[size=8]
Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable)
Region 4: I/O ports at c0a0 [size=16]
Kernel driver in use: ata_piix
00:01.2 USB controller [0c03]: Intel Corporation 82371SB PIIX3 USB
[Natoma/Triton II] [8086:7020] (rev 01) (prog-if 00 [UHCI])
Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin D routed to IRQ 11
Region 4: I/O ports at c040 [size=32]
Kernel driver in use: uhci_hcd
00:01.3 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113]
(rev 03)
Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100]
Physical Slot: 1
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 9
Kernel driver in use: piix4_smbus
00:02.0 VGA compatible controller [0300]: Cirrus Logic GD 5446 [1013:00b8]
(prog-if 00 [VGA controller])
Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
Physical Slot: 2
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Region 0: Memory at fc000000 (32-bit, prefetchable) [size=32M]
Region 1: Memory at febf0000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at febe0000 [disabled] [size=64K]
00:03.0 Ethernet controller [0200]: Red Hat, Inc Virtio network device
[1af4:1000]
Subsystem: Red Hat, Inc Device [1af4:0001]
Physical Slot: 3
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at c060 [size=32]
Region 1: Memory at febf1000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at febc0000 [disabled] [size=128K]
Capabilities: [40] MSI-X: Enable+ Count=3 Masked-
Vector table: BAR=1 offset=00000000
PBA: BAR=1 offset=00000800
Kernel driver in use: virtio-pci
00:04.0 SCSI storage controller [0100]: Red Hat, Inc Virtio SCSI [1af4:1004]
Subsystem: Red Hat, Inc Device [1af4:0008]
Physical Slot: 4
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at c000 [size=64]
Region 1: Memory at febf2000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] MSI-X: Enable+ Count=4 Masked-
Vector table: BAR=1 offset=00000000
PBA: BAR=1 offset=00000800
Kernel driver in use: virtio-pci
00:06.0 Unclassified device [00ff]: Red Hat, Inc Virtio memory balloon
[1af4:1002]
Subsystem: Red Hat, Inc Device [1af4:0005]
Physical Slot: 6
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at c080 [size=32]
Kernel driver in use: virtio-pci
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