Frequent java task hang on ARM server
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
ubuntu-omap4-extras-graphics |
New
|
Undecided
|
Unassigned | ||
linux-ti-omap4 (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned | ||
linux-ti-omap4 (Ubuntu Linaro Evaluation Build) |
New
|
Undecided
|
Unassigned | ||
openjdk-6 (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
I'm using an up-to-date oneiric ARM server image running jenkins - after a short period of time (< 1 hour) the server locks up - hard reboot and I can see these messages in the syslog:
Sep 8 21:50:51 winehouse kernel: [ 7920.496795] INFO: task java:20973 blocked for more than 120 seconds.
Sep 8 21:50:51 winehouse kernel: [ 7920.496795] "echo 0 > /proc/sys/
Sep 8 21:50:51 winehouse kernel: [ 7920.497009] java D c05ca9e0 0 20973 561 0x00000000
Sep 8 21:50:51 winehouse kernel: [ 7920.497222] [<c05ca9e0>] (schedule+
Sep 8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cc728>] (__down_
Sep 8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cf5e8>] (do_page_
Sep 8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cf7e4>] (do_page_
Sep 8 21:50:51 winehouse kernel: [ 7920.497406] [<c004c410>] (do_DataAbort+
Sep 8 21:50:51 winehouse kernel: [ 7920.497436] Exception stack(0xec91dec0 to 0xec91df08)
Sep 8 21:50:51 winehouse kernel: [ 7920.497467] dec0: 56e0f000 56e12000 00000020 0000001f ef248040 56e110c0 56e0f44c ef248000
Sep 8 21:50:51 winehouse kernel: [ 7920.497467] dee0: 00000000 ec91c000 00000000 56b4446c 56e11000 ec91df08 c00553d4 c005d198
Sep 8 21:50:51 winehouse kernel: [ 7920.497497] df00: 800f0013 ffffffff
Sep 8 21:50:51 winehouse kernel: [ 7920.497497] [<c05cd210>] (__dabt_
Sep 8 21:50:51 winehouse kernel: [ 7920.497497] [<c005d198>] (v7_coherent_
Sep 8 21:50:51 winehouse kernel: [ 7920.497497] [<c00553d4>] (arm_syscall+
Architecture: armel
Date: Fri Sep 9 08:51:09 2011
Dependencies:
ca-certificates 20110502+nmu1
ca-certificate
coreutils 8.5-1ubuntu6
debconf 1.5.40ubuntu1
dpkg 1.16.0.3ubuntu3
gcc-4.6-base 4.6.1-9ubuntu2
icedtea-
java-common 0.42ubuntu1
libacl1 2.2.51-3
libattr1 1:2.4.46-3
libavahi-client3 0.6.30-4ubuntu1
libavahi-
libavahi-common3 0.6.30-4ubuntu1
libbz2-1.0 1.0.5-6ubuntu1
libc-bin 2.13-17ubuntu2
libc6 2.13-17ubuntu2
libcomerr2 1.41.14-1ubuntu3
libcups2 1.5.0-5
libdbus-1-3 1.4.14-1ubuntu1
libfreetype6 2.4.4-2ubuntu1
libgcc1 1:4.6.1-9ubuntu2
libgcrypt11 1.5.0-1
libgnutls26 2.10.5-1ubuntu3
libgpg-error0 1.10-0.3ubuntu1
libgssapi-krb5-2 1.9.1+dfsg-1ubuntu1
libjpeg62 6b1-1ubuntu2
libk5crypto3 1.9.1+dfsg-1ubuntu1
libkeyutils1 1.4-6
libkrb5-3 1.9.1+dfsg-1ubuntu1
libkrb5support0 1.9.1+dfsg-1ubuntu1
liblcms1 1.19.dfsg-1ubuntu1
liblzma2 5.0.0-2
libnspr4 4.8.7-0ubuntu3
libnss3 3.12.9+
libnss3-1d 3.12.9+
libselinux1 2.0.98-1.1
libsqlite3-0 3.7.7-2ubuntu1
libssl1.0.0 1.0.0d-2ubuntu2
libstdc++6 4.6.1-9ubuntu2
libtasn1-3 2.9-4
multiarch-support 2.13-17ubuntu2
openjdk-
openjdk-6-jre-lib 6b23~pre8-1ubuntu1
openssl 1.0.0d-2ubuntu2
perl-base 5.12.4-4
tzdata 2011g-0ubuntu0.
tzdata-java 2011g-0ubuntu0.
xz-utils 5.0.0-2
zlib1g 1:1.2.3.
DistroRelease: Ubuntu 11.10
Package: openjdk-
PackageArchitec
ProcEnviron:
LANGUAGE=en_GB:
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcVersionSign
SourcePackage: openjdk-6
Uname: Linux 3.0.0-1204-omap4 armv7l
UpgradeStatus: No upgrade log present (probably fresh install)
I see if I can grab a stack trace from the java process but unlikely as system is frozen