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[Bug 845158] Re: Frequent java task hang on ARM server

 

Hi Xerxes

I've attached more information to the main description of the bug which
should cover kernel version.

I'm using an OMAP4 Pandaboard - not sure how I check hardware revision
TBH.

I've not got a chroot environment setup for ARM so can't test the natty
kernel stuff (yet).

With reference to jenkins this was a fresh install with no configuration
- so it was not actually doing anything other than general jenkins
background stuff like checking for updates etc..


** Description changed:

  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/kernel/hung_task_timeout_secs" disables this message.
  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+0x540/0x618) from [<c05cc728>] (__down_read+0xc0/0xd8)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cc728>] (__down_read+0xc0/0xd8) from [<c05cf5e8>] (do_page_fault.part.2+0x80/0x1e0)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cf5e8>] (do_page_fault.part.2+0x80/0x1e0) from [<c05cf7e4>] (do_page_fault+0x9c/0xac)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cf7e4>] (do_page_fault+0x9c/0xac) from [<c004c410>] (do_DataAbort+0x34/0x98)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497406] [<c004c410>] (do_DataAbort+0x34/0x98) from [<c05cd210>] (__dabt_svc+0x70/0xa0)
  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_svc+0x70/0xa0) from [<c005d198>] (v7_coherent_kern_range+0x1c/0x7c)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497497] [<c005d198>] (v7_coherent_kern_range+0x1c/0x7c) from [<c00553d4>] (arm_syscall+0x140/0x294)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497497] [<c00553d4>] (arm_syscall+0x140/0x294) from [<c0051220>] (ret_fast_syscall+0x0/0x30)
+ 
+ ProblemType: Bug
+ Architecture: armel
+ Date: Fri Sep  9 08:51:09 2011
+ Dependencies:
+  ca-certificates 20110502+nmu1
+  ca-certificates-java 20110531
+  coreutils 8.5-1ubuntu6
+  debconf 1.5.40ubuntu1
+  dpkg 1.16.0.3ubuntu3
+  gcc-4.6-base 4.6.1-9ubuntu2
+  icedtea-6-jre-jamvm 6b23~pre8-1ubuntu1
+  java-common 0.42ubuntu1
+  libacl1 2.2.51-3
+  libattr1 1:2.4.46-3
+  libavahi-client3 0.6.30-4ubuntu1
+  libavahi-common-data 0.6.30-4ubuntu1
+  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+ckbi-1.82-0ubuntu4
+  libnss3-1d 3.12.9+ckbi-1.82-0ubuntu4
+  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-6-jre-headless 6b23~pre8-1ubuntu1
+  openjdk-6-jre-lib 6b23~pre8-1ubuntu1
+  openssl 1.0.0d-2ubuntu2
+  perl-base 5.12.4-4
+  tzdata 2011g-0ubuntu0.11.04
+  tzdata-java 2011g-0ubuntu0.11.04
+  xz-utils 5.0.0-2
+  zlib1g 1:1.2.3.4.dfsg-3ubuntu3
+ DistroRelease: Ubuntu 11.10
+ Package: openjdk-6-jre-headless 6b23~pre8-1ubuntu1
+ PackageArchitecture: armel
+ ProcEnviron:
+  LANGUAGE=en_GB:
+  LANG=en_GB.UTF-8
+  SHELL=/bin/bash
+ ProcVersionSignature: Ubuntu 3.0.0-1204.9-omap4 3.0.3
+ SourcePackage: openjdk-6
+ Tags:  oneiric
+ Uname: Linux 3.0.0-1204-omap4 armv7l
+ UpgradeStatus: No upgrade log present (probably fresh install)

** Tags added: oneiric

** Description changed:

  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/kernel/hung_task_timeout_secs" disables this message.
  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+0x540/0x618) from [<c05cc728>] (__down_read+0xc0/0xd8)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cc728>] (__down_read+0xc0/0xd8) from [<c05cf5e8>] (do_page_fault.part.2+0x80/0x1e0)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cf5e8>] (do_page_fault.part.2+0x80/0x1e0) from [<c05cf7e4>] (do_page_fault+0x9c/0xac)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cf7e4>] (do_page_fault+0x9c/0xac) from [<c004c410>] (do_DataAbort+0x34/0x98)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497406] [<c004c410>] (do_DataAbort+0x34/0x98) from [<c05cd210>] (__dabt_svc+0x70/0xa0)
  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_svc+0x70/0xa0) from [<c005d198>] (v7_coherent_kern_range+0x1c/0x7c)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497497] [<c005d198>] (v7_coherent_kern_range+0x1c/0x7c) from [<c00553d4>] (arm_syscall+0x140/0x294)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497497] [<c00553d4>] (arm_syscall+0x140/0x294) from [<c0051220>] (ret_fast_syscall+0x0/0x30)
  
- ProblemType: Bug
  Architecture: armel
  Date: Fri Sep  9 08:51:09 2011
  Dependencies:
-  ca-certificates 20110502+nmu1
-  ca-certificates-java 20110531
-  coreutils 8.5-1ubuntu6
-  debconf 1.5.40ubuntu1
-  dpkg 1.16.0.3ubuntu3
-  gcc-4.6-base 4.6.1-9ubuntu2
-  icedtea-6-jre-jamvm 6b23~pre8-1ubuntu1
-  java-common 0.42ubuntu1
-  libacl1 2.2.51-3
-  libattr1 1:2.4.46-3
-  libavahi-client3 0.6.30-4ubuntu1
-  libavahi-common-data 0.6.30-4ubuntu1
-  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+ckbi-1.82-0ubuntu4
-  libnss3-1d 3.12.9+ckbi-1.82-0ubuntu4
-  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-6-jre-headless 6b23~pre8-1ubuntu1
-  openjdk-6-jre-lib 6b23~pre8-1ubuntu1
-  openssl 1.0.0d-2ubuntu2
-  perl-base 5.12.4-4
-  tzdata 2011g-0ubuntu0.11.04
-  tzdata-java 2011g-0ubuntu0.11.04
-  xz-utils 5.0.0-2
-  zlib1g 1:1.2.3.4.dfsg-3ubuntu3
+  ca-certificates 20110502+nmu1
+  ca-certificates-java 20110531
+  coreutils 8.5-1ubuntu6
+  debconf 1.5.40ubuntu1
+  dpkg 1.16.0.3ubuntu3
+  gcc-4.6-base 4.6.1-9ubuntu2
+  icedtea-6-jre-jamvm 6b23~pre8-1ubuntu1
+  java-common 0.42ubuntu1
+  libacl1 2.2.51-3
+  libattr1 1:2.4.46-3
+  libavahi-client3 0.6.30-4ubuntu1
+  libavahi-common-data 0.6.30-4ubuntu1
+  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+ckbi-1.82-0ubuntu4
+  libnss3-1d 3.12.9+ckbi-1.82-0ubuntu4
+  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-6-jre-headless 6b23~pre8-1ubuntu1
+  openjdk-6-jre-lib 6b23~pre8-1ubuntu1
+  openssl 1.0.0d-2ubuntu2
+  perl-base 5.12.4-4
+  tzdata 2011g-0ubuntu0.11.04
+  tzdata-java 2011g-0ubuntu0.11.04
+  xz-utils 5.0.0-2
+  zlib1g 1:1.2.3.4.dfsg-3ubuntu3
  DistroRelease: Ubuntu 11.10
  Package: openjdk-6-jre-headless 6b23~pre8-1ubuntu1
  PackageArchitecture: armel
  ProcEnviron:
-  LANGUAGE=en_GB:
-  LANG=en_GB.UTF-8
-  SHELL=/bin/bash
+  LANGUAGE=en_GB:
+  LANG=en_GB.UTF-8
+  SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 3.0.0-1204.9-omap4 3.0.3
  SourcePackage: openjdk-6
- Tags:  oneiric
  Uname: Linux 3.0.0-1204-omap4 armv7l
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/bugs/845158

Title:
  Frequent java task hang on ARM server

Status in “openjdk-6” package in Ubuntu:
  New

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/kernel/hung_task_timeout_secs" disables this message.
  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+0x540/0x618) from [<c05cc728>] (__down_read+0xc0/0xd8)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cc728>] (__down_read+0xc0/0xd8) from [<c05cf5e8>] (do_page_fault.part.2+0x80/0x1e0)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cf5e8>] (do_page_fault.part.2+0x80/0x1e0) from [<c05cf7e4>] (do_page_fault+0x9c/0xac)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497222] [<c05cf7e4>] (do_page_fault+0x9c/0xac) from [<c004c410>] (do_DataAbort+0x34/0x98)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497406] [<c004c410>] (do_DataAbort+0x34/0x98) from [<c05cd210>] (__dabt_svc+0x70/0xa0)
  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_svc+0x70/0xa0) from [<c005d198>] (v7_coherent_kern_range+0x1c/0x7c)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497497] [<c005d198>] (v7_coherent_kern_range+0x1c/0x7c) from [<c00553d4>] (arm_syscall+0x140/0x294)
  Sep  8 21:50:51 winehouse kernel: [ 7920.497497] [<c00553d4>] (arm_syscall+0x140/0x294) from [<c0051220>] (ret_fast_syscall+0x0/0x30)

  Architecture: armel
  Date: Fri Sep  9 08:51:09 2011
  Dependencies:
   ca-certificates 20110502+nmu1
   ca-certificates-java 20110531
   coreutils 8.5-1ubuntu6
   debconf 1.5.40ubuntu1
   dpkg 1.16.0.3ubuntu3
   gcc-4.6-base 4.6.1-9ubuntu2
   icedtea-6-jre-jamvm 6b23~pre8-1ubuntu1
   java-common 0.42ubuntu1
   libacl1 2.2.51-3
   libattr1 1:2.4.46-3
   libavahi-client3 0.6.30-4ubuntu1
   libavahi-common-data 0.6.30-4ubuntu1
   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+ckbi-1.82-0ubuntu4
   libnss3-1d 3.12.9+ckbi-1.82-0ubuntu4
   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-6-jre-headless 6b23~pre8-1ubuntu1
   openjdk-6-jre-lib 6b23~pre8-1ubuntu1
   openssl 1.0.0d-2ubuntu2
   perl-base 5.12.4-4
   tzdata 2011g-0ubuntu0.11.04
   tzdata-java 2011g-0ubuntu0.11.04
   xz-utils 5.0.0-2
   zlib1g 1:1.2.3.4.dfsg-3ubuntu3
  DistroRelease: Ubuntu 11.10
  Package: openjdk-6-jre-headless 6b23~pre8-1ubuntu1
  PackageArchitecture: armel
  ProcEnviron:
   LANGUAGE=en_GB:
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 3.0.0-1204.9-omap4 3.0.3
  SourcePackage: openjdk-6
  Uname: Linux 3.0.0-1204-omap4 armv7l
  UpgradeStatus: No upgrade log present (probably fresh install)

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