Date: Mon, 7 Jan 2013 08:05:18 GMT From: Rasmus Skaarup <freebsd@gal.dk> To: freebsd-gnats-submit@FreeBSD.org Subject: amd64/175091: Crash: Fatal trap 12: page fault while in kernel mode Message-ID: <201301070805.r0785IeP031201@red.freebsd.org> Resent-Message-ID: <201301070810.r078A2gj053110@freefall.freebsd.org>
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>Number: 175091
>Category: amd64
>Synopsis: Crash: Fatal trap 12: page fault while in kernel mode
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-amd64
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Jan 07 08:10:01 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator: Rasmus Skaarup
>Release: 9.1-RELEASE
>Organization:
>Environment:
FreeBSD thirdhost 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec 4 09:23:10 UTC 2012 root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
On of my virtualized FreeBSD machines has been panic'ing two times within the last two weeks. After the first panic I ran freebsd-update and upgraded to 9.1-RELEASE succesfully. Today the machine panic'ed again.
I have another virtualized FreeBSD machine running on the same host, and it does not exhibit this behaviour.
Here is the output from dmesg, after reboot:
****
Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 02
fault virtual address = 0x48
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff80bd5139
stack pointer = 0x28:0xffffff81625536c0
frame pointer = 0x28:0xffffff8162553750
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 62083 (httpd)
trap number = 12
panic: page fault
cpuid = 2
KDB: stack backtrace:
#0 0xffffffff809208a6 at kdb_backtrace+0x66
#1 0xffffffff808ea8be at panic+0x1ce
#2 0xffffffff80bd8240 at trap_fatal+0x290
#3 0xffffffff80bd857d at trap_pfault+0x1ed
#4 0xffffffff80bd8b9e at trap+0x3ce
#5 0xffffffff80bc315f at calltrap+0x8
#6 0xffffffff80b41133 at vm_fault_hold+0x1b13
#7 0xffffffff80b41cc3 at vm_fault+0x73
#8 0xffffffff80bd84b4 at trap_pfault+0x124
#9 0xffffffff80bd8c6c at trap+0x49c
#10 0xffffffff80bc315f at calltrap+0x8
Uptime: 13h6m22s
*********
This machine is running virtualized on a Centos 6.3 host, with
qemu-kvm-0.12.1.2-2.295.el6_3.2.x86_64
and the following configuration:
*********
<domain type='kvm'>
<name>FreeBSD3</name>
<uuid>77777777-8794-11e1-b2d2-003005fb82e6</uuid>
<memory unit='KiB'>5242880</memory>
<currentMemory unit='KiB'>5242880</currentMemory>
<vcpu placement='static'>4</vcpu>
<os>
<type arch='x86_64' machine='rhel6.2.0'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source file='/home/vms/FreeBSD3-SystemDisk.img'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source file='/home/vms/FreeBSD3-DataDisk.img'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
</disk>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='usb' index='0'/>
<interface type='bridge'>
<mac address='52:54:00:b2:12:8c'/>
<source bridge='br0'/>
<model type='e1000'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</interface>
<interface type='bridge'>
<mac address='52:54:00:b2:12:a2'/>
<source bridge='br1'/>
<model type='e1000'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</interface>
<interface type='bridge'>
<mac address='00:16:8e:1a:f3:a9'/>
<source bridge='virbr0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='10.0.0.29' keymap='en-us'>
<listen type='address' address='10.0.0.29'/>
</graphics>
<video>
<model type='cirrus' vram='9216' heads='1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</memballoon>
</devices>
</domain>
*******
/boot/loader.conf:
********
virtio_load="YES"
virtio_pci_load="YES"
virtio_blk_load="YES"
if_vtnet_load="YES"
virtio_balloon_load="YES"
*******
pciconf -l
*******
hostb0@pci0:0:0:0: class=0x060000 card=0x11001af4 chip=0x12378086 rev=0x02 hdr=0x00
isab0@pci0:0:1:0: class=0x060100 card=0x11001af4 chip=0x70008086 rev=0x00 hdr=0x00
atapci0@pci0:0:1:1: class=0x010180 card=0x11001af4 chip=0x70108086 rev=0x00 hdr=0x00
uhci0@pci0:0:1:2: class=0x0c0300 card=0x11001af4 chip=0x70208086 rev=0x01 hdr=0x00
none0@pci0:0:1:3: class=0x068000 card=0x11001af4 chip=0x71138086 rev=0x03 hdr=0x00
vgapci0@pci0:0:2:0: class=0x030000 card=0x11001af4 chip=0x00b81013 rev=0x00 hdr=0x00
re0@pci0:0:3:0: class=0x020000 card=0x11001af4 chip=0x813910ec rev=0x20 hdr=0x00
virtio_pci0@pci0:0:4:0: class=0x050000 card=0x00051af4 chip=0x10021af4 rev=0x00 hdr=0x00
em0@pci0:0:5:0: class=0x020000 card=0x11001af4 chip=0x100e8086 rev=0x03 hdr=0x00
em1@pci0:0:6:0: class=0x020000 card=0x11001af4 chip=0x100e8086 rev=0x03 hdr=0x00
virtio_pci1@pci0:0:7:0: class=0x010000 card=0x00021af4 chip=0x10011af4 rev=0x00 hdr=0x00
virtio_pci2@pci0:0:8:0: class=0x010000 card=0x00021af4 chip=0x10011af4 rev=0x00 hdr=0x00
********
>How-To-Repeat:
Happens regularly by itself.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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