Public bug reported:
A kernel stack trace occurred out of the blue on one of my Lucid server
:
Mar 5 13:56:30 srv kernel: [621609.812732] ------------[ cut here ]------------
Mar 5 13:56:30 srv kernel: [621609.812850] kernel BUG at
/build/buildd/linux-2.6.32/mm/prio_tree.c:79!
Mar 5 13:56:30 srv kernel: [621609.812958] invalid opcode: 0000 [#1] SMP
Mar 5 13:56:30 srv kernel: [621609.814136] last sysfs file:
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
Mar 5 13:56:30 srv kernel: [621609.816599] CPU 0
Mar 5 13:56:30 srv kernel: [621609.818087] Modules linked in: xt_state ipt_LOG
xt_limit xt_recent xt_tcpudp xt_conntrack iptable_nat nf_nat nf_conntrack_ipv4
nf_conntrack nf_defrag_ipv4 iptable_filter ip_tables x_tables fbcon tileblit
font bitblit softcursor vga16fb vgastate radeon ttm drm_kms_helper drm
i2c_algo_bit edac_core edac_mce_amd k8temp i2c_nforce2 asus_atk0110 usbhid hid
forcedeth sata_nv pata_amd
Mar 5 13:56:30 srv kernel: [621609.820013] Pid: 20264, comm: trivial-rewrite
Not tainted 2.6.32-38-server #83-Ubuntu System Product Name
Mar 5 13:56:30 srv kernel: [621609.820013] RIP: 0010:[<ffffffff8110ad22>]
[<ffffffff8110ad22>] vma_prio_tree_add+0xc2/0xd0
Mar 5 13:56:30 srv kernel: [621609.820013] RSP: 0018:ffff88007d04dd88 EFLAGS:
00010293
Mar 5 13:56:30 srv kernel: [621609.820013] RAX: 0000000000000235 RBX:
ffff88007d314ac8 RCX: ffffffffffffffff
Mar 5 13:56:30 srv kernel: [621609.820013] RDX: 0000000000000032 RSI:
ffff88007d3142e0 RDI: ffff88007d314ac8
Mar 5 13:56:30 srv kernel: [621609.820013] RBP: ffff88007d04dd88 R08:
ffff88007d314b18 R09: ffff88007d314498
Mar 5 13:56:30 srv kernel: [621609.820013] R10: ffff88007d04dd78 R11:
0000000000000206 R12: ffff88007d314b18
Mar 5 13:56:30 srv kernel: [621609.820013] R13: 0000000000000000 R14:
ffff88007f7ef5b8 R15: ffff88007d314ac8
Mar 5 13:56:30 srv kernel: [621609.820013] FS: 00007f530ebd5700(0000)
GS:ffff880001c00000(0000) knlGS:0000000000000000
Mar 5 13:56:30 srv kernel: [621609.820013] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Mar 5 13:56:30 srv kernel: [621609.820013] CR2: 00007f6542918028 CR3:
00000000792b8000 CR4: 00000000000006f0
Mar 5 13:56:30 srv kernel: [621609.820013] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Mar 5 13:56:30 srv kernel: [621609.820013] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Mar 5 13:56:30 srv kernel: [621609.820013] Process trivial-rewrite (pid:
20264, threadinfo ffff88007d04c000, task ffff88007dba9700)
Mar 5 13:56:30 srv kernel: [621609.820013] Stack:
Mar 5 13:56:30 srv kernel: [621609.820013] ffff88007d04dda8 ffffffff8110ae81
ffff88007d3142e0 ffff88007d314450
Mar 5 13:56:30 srv kernel: [621609.820013] <0> ffff88007d04ddb8
ffffffff8111a33c ffff88007d04de48 ffffffff8111af7f
Mar 5 13:56:30 srv kernel: [621609.820013] <0> ffff880037e54a80
0000000000000000 0000000000000033 00007f65420ba000
Mar 5 13:56:30 srv kernel: [621609.820013] Call Trace:
Mar 5 13:56:30 srv kernel: [621609.820013] [<ffffffff8110ae81>]
vma_prio_tree_insert+0x41/0x60
Mar 5 13:56:30 srv kernel: [621609.820013] [<ffffffff8111a33c>]
__vma_link_file+0x4c/0x90
Mar 5 13:56:30 srv kernel: [621609.820013] [<ffffffff8111af7f>]
vma_adjust+0xdf/0x4f0
Mar 5 13:56:30 srv kernel: [621609.820013] [<ffffffff8111b516>]
split_vma+0x186/0x1c0
Mar 5 13:56:30 srv kernel: [621609.820013] [<ffffffff8111dc3c>]
mprotect_fixup+0x1fc/0x2b0
Mar 5 13:56:30 srv kernel: [621609.820013] [<ffffffff8111de77>]
sys_mprotect+0x187/0x250
Mar 5 13:56:30 srv kernel: [621609.820013] [<ffffffff81013172>]
system_call_fastpath+0x16/0x1b
Mar 5 13:56:30 srv kernel: [621609.820013] Code: 58 48 89 7e 68 c9 c3 66 90 48
8b 56 50 48 8d 47 50 48 89 42 08 48 89 57 50 48 8d 56 50 48 89 57 58 48 89 46
50 c9 c3 0f 0b eb fe <0f> 0b eb fe 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41
54 53
Mar 5 13:56:30 srv kernel: [621609.820013] RIP [<ffffffff8110ad22>]
vma_prio_tree_add+0xc2/0xd0
Mar 5 13:56:30 srv kernel: [621609.820013] RSP <ffff88007d04dd88>
Mar 5 13:56:30 srv kernel: [621610.116924] ---[ end trace 91acfe623edf1af1 ]---
The box was not doing much at the time of the crash. The preceding log lines :
Mar 5 13:56:13 srv ovpn-cameleon[1088]: read UDPv4 [EHOSTUNREACH]: No route to
host (code=113)
Mar 5 13:56:30 srv ovpn-cameleon[1088]: last message repeated 7 times
Mar 5 13:56:30 srv postfix/qmgr[1259]: 0CC2EBFC4A:
from=<logch...@srv.example.com>, size=6699, nrcpt=1 (queue active)
The ovpn-cameleon messages are from a cron job restarting OpenVPN every 5
minutes after loosing connectivity. The VPN restart was looping for a few days
(VPN server was brought down on March 3rd) at the time of the crash so it might
not be related at all.
$ lsb_release -rd
Description: Ubuntu 10.04.4 LTS
Release: 10.04
$ apt-cache policy linux-image-2.6.32-39-server
linux-image-2.6.32-39-server:
Installed: 2.6.32-39.86
Candidate: 2.6.32-39.86
Version table:
*** 2.6.32-39.86 0
500 http://ca.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
500 http://ca.archive.ubuntu.com/ubuntu/ lucid-security/main Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-38-server 2.6.32-38.83
Regression: No
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.32-38.83-server 2.6.32.52+drm33.21
Uname: Linux 2.6.32-38-server x86_64
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2:
ls: cannot access /dev/snd/: No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
CurrentDmesg:
[ 20.300022] eth0: no IPv6 routers present
[ 73.360231] Marking TSC unstable due to cpufreq changes
[ 73.360307] Switching to clocksource acpi_pm
Date: Sun Mar 11 20:19:50 2012
Frequency: This has only happened once.
Lsusb:
Bus 002 Device 002: ID 051d:0002 American Power Conversion Uninterruptible
Power Supply
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: System manufacturer System Product Name
PciMultimedia:
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-38-server root=/dev/mapper/vg0-root ro
cgroup_disable=memory noswapaccount nodelayacct
ProcEnviron:
LANG=en_CA.UTF-8
SHELL=/bin/bash
SourcePackage: linux
dmi.bios.date: 10/21/2005
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: ASUS K8N4-E Deluxe ACPI BIOS Revision 1010
dmi.board.name: K8N4-E Deluxe
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: 1.XX
dmi.chassis.asset.tag: 123456789000
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnPhoenixTechnologies,LTD:bvrASUSK8N4-EDeluxeACPIBIOSRevision1010:bd10/21/2005:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnK8N4-EDeluxe:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug lucid needs-upstream-testing
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https://bugs.launchpad.net/bugs/952650
Title:
kernel BUG at /build/buildd/linux-2.6.32/mm/prio_tree.c:79
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