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[Bug 1310717] [NEW] process segfaults, hung task timeouts

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Public bug reported:

My pandaboard ES runs irssi in a tmux session for me; irssi has died of
segfaults twice recently, and dmesg had these warnings:

[395523.456237] PLL GO bit not set
[395523.456604] omapdss HDMI error: failed to power on device
[395523.458251] [drm] Cannot find any crtc or sizes - going 1024x768
[511971.446472] INFO: task gmain:28222 blocked for more than 120 seconds.
[511971.446899] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[511971.447387] gmain           D c0592de8     0 28222   1414 0x00000200
[511971.447479] [<c0592de8>] (__schedule+0x65c/0x7ec) from [<c059311c>] (schedule+0x94/0x98)
[511971.447570] [<c059311c>] (schedule+0x94/0x98) from [<c004620c>] (exit_mm+0xc0/0x138)
[511971.447601] [<c004620c>] (exit_mm+0xc0/0x138) from [<c00464a4>] (do_exit+0x220/0x7e8)
[511971.447662] [<c00464a4>] (do_exit+0x220/0x7e8) from [<c0046d58>] (do_group_exit+0x94/0xd0)
[511971.447723] [<c0046d58>] (do_group_exit+0x94/0xd0) from [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568)
[511971.447784] [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568) from [<c001162c>] (do_signal+0x94/0x4ec)
[511971.447814] [<c001162c>] (do_signal+0x94/0x4ec) from [<c0011f14>] (do_notify_resume+0x28/0x64)
[511971.447875] [<c0011f14>] (do_notify_resume+0x28/0x64) from [<c000e01c>] (work_pending+0x28/0x2c)
[512091.451538] INFO: task gmain:28222 blocked for more than 120 seconds.
[512091.451965] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[512091.452453] gmain           D c0592de8     0 28222   1414 0x00000200
[512091.452514] [<c0592de8>] (__schedule+0x65c/0x7ec) from [<c059311c>] (schedule+0x94/0x98)
[512091.452575] [<c059311c>] (schedule+0x94/0x98) from [<c004620c>] (exit_mm+0xc0/0x138)
[512091.452606] [<c004620c>] (exit_mm+0xc0/0x138) from [<c00464a4>] (do_exit+0x220/0x7e8)
[512091.452667] [<c00464a4>] (do_exit+0x220/0x7e8) from [<c0046d58>] (do_group_exit+0x94/0xd0)
[512091.452728] [<c0046d58>] (do_group_exit+0x94/0xd0) from [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568)
[512091.452789] [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568) from [<c001162c>] (do_signal+0x94/0x4ec)
[512091.452819] [<c001162c>] (do_signal+0x94/0x4ec) from [<c0011f14>] (do_notify_resume+0x28/0x64)
[512091.452880] [<c0011f14>] (do_notify_resume+0x28/0x64) from [<c000e01c>] (work_pending+0x28/0x2c)
[512211.444030] INFO: task gmain:28222 blocked for more than 120 seconds.
[512211.444183] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.$
[512211.444366] gmain           D c0592de8     0 28222   1414 0x00000200
[512211.444427] [<c0592de8>] (__schedule+0x65c/0x7ec) from [<c059311c>] (schedule+0x94/0x98)
[512211.444427] [<c059311c>] (schedule+0x94/0x98) from [<c004620c>] (exit_mm+0xc0/0x138)
[512211.444458] [<c004620c>] (exit_mm+0xc0/0x138) from [<c00464a4>] (do_exit+0x220/0x7e8)
[512211.444458] [<c00464a4>] (do_exit+0x220/0x7e8) from [<c0046d58>] (do_group_exit+0x94/0xd0)
[512211.444488] [<c0046d58>] (do_group_exit+0x94/0xd0) from [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568)
[512211.444519] [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568) from [<c001162c>] (do_signal+0x94/0x4ec)
[512211.444549] [<c001162c>] (do_signal+0x94/0x4ec) from [<c0011f14>] (do_notify_resume+0x28/0x64)
[512211.444549] [<c0011f14>] (do_notify_resume+0x28/0x64) from [<c000e01c>] (work_pending+0x28/0x2c)
[512331.443237] INFO: task gmain:28222 blocked for more than 120 seconds.
[512331.443389] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.$
[512331.443511] gmain           D c0592de8     0 28222   1414 0x00000200
[512331.443542] [<c0592de8>] (__schedule+0x65c/0x7ec) from [<c059311c>] (schedule+0x94/0x98)$
[512331.443572] [<c059311c>] (schedule+0x94/0x98) from [<c004620c>] (exit_mm+0xc0/0x138)
[512331.443572] [<c004620c>] (exit_mm+0xc0/0x138) from [<c00464a4>] (do_exit+0x220/0x7e8)$
[512331.443603] [<c00464a4>] (do_exit+0x220/0x7e8) from [<c0046d58>] (do_group_exit+0x94/0xd0)
[512331.443634] [<c0046d58>] (do_group_exit+0x94/0xd0) from [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568)$
[512331.443634] [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568) from [<c001162c>] (do_signal+0x94/0x4ec)
[512331.443664] [<c001162c>] (do_signal+0x94/0x4ec) from [<c0011f14>] (do_notify_resume+0x28/0x64)$
[512331.443664] [<c0011f14>] (do_notify_resume+0x28/0x64) from [<c000e01c>] (work_pending+0x28/0x2c)

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.5.0-240-omap4 3.5.0-240.56
ProcVersionSignature: Ubuntu 3.5.0-240.56-omap4 3.5.7.31
Uname: Linux 3.5.0-240-omap4 armv7l
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: armhf
Date: Mon Apr 21 10:18:15 2014
MarkForUpload: True
ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-ti-omap4
UpgradeStatus: Upgraded to saucy on 2014-01-27 (83 days ago)

** Affects: linux-ti-omap4 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug armhf saucy

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https://bugs.launchpad.net/bugs/1310717

Title:
  process segfaults, hung task timeouts

Status in “linux-ti-omap4” package in Ubuntu:
  New

Bug description:
  My pandaboard ES runs irssi in a tmux session for me; irssi has died
  of segfaults twice recently, and dmesg had these warnings:

  [395523.456237] PLL GO bit not set
  [395523.456604] omapdss HDMI error: failed to power on device
  [395523.458251] [drm] Cannot find any crtc or sizes - going 1024x768
  [511971.446472] INFO: task gmain:28222 blocked for more than 120 seconds.
  [511971.446899] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [511971.447387] gmain           D c0592de8     0 28222   1414 0x00000200
  [511971.447479] [<c0592de8>] (__schedule+0x65c/0x7ec) from [<c059311c>] (schedule+0x94/0x98)
  [511971.447570] [<c059311c>] (schedule+0x94/0x98) from [<c004620c>] (exit_mm+0xc0/0x138)
  [511971.447601] [<c004620c>] (exit_mm+0xc0/0x138) from [<c00464a4>] (do_exit+0x220/0x7e8)
  [511971.447662] [<c00464a4>] (do_exit+0x220/0x7e8) from [<c0046d58>] (do_group_exit+0x94/0xd0)
  [511971.447723] [<c0046d58>] (do_group_exit+0x94/0xd0) from [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568)
  [511971.447784] [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568) from [<c001162c>] (do_signal+0x94/0x4ec)
  [511971.447814] [<c001162c>] (do_signal+0x94/0x4ec) from [<c0011f14>] (do_notify_resume+0x28/0x64)
  [511971.447875] [<c0011f14>] (do_notify_resume+0x28/0x64) from [<c000e01c>] (work_pending+0x28/0x2c)
  [512091.451538] INFO: task gmain:28222 blocked for more than 120 seconds.
  [512091.451965] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [512091.452453] gmain           D c0592de8     0 28222   1414 0x00000200
  [512091.452514] [<c0592de8>] (__schedule+0x65c/0x7ec) from [<c059311c>] (schedule+0x94/0x98)
  [512091.452575] [<c059311c>] (schedule+0x94/0x98) from [<c004620c>] (exit_mm+0xc0/0x138)
  [512091.452606] [<c004620c>] (exit_mm+0xc0/0x138) from [<c00464a4>] (do_exit+0x220/0x7e8)
  [512091.452667] [<c00464a4>] (do_exit+0x220/0x7e8) from [<c0046d58>] (do_group_exit+0x94/0xd0)
  [512091.452728] [<c0046d58>] (do_group_exit+0x94/0xd0) from [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568)
  [512091.452789] [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568) from [<c001162c>] (do_signal+0x94/0x4ec)
  [512091.452819] [<c001162c>] (do_signal+0x94/0x4ec) from [<c0011f14>] (do_notify_resume+0x28/0x64)
  [512091.452880] [<c0011f14>] (do_notify_resume+0x28/0x64) from [<c000e01c>] (work_pending+0x28/0x2c)
  [512211.444030] INFO: task gmain:28222 blocked for more than 120 seconds.
  [512211.444183] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.$
  [512211.444366] gmain           D c0592de8     0 28222   1414 0x00000200
  [512211.444427] [<c0592de8>] (__schedule+0x65c/0x7ec) from [<c059311c>] (schedule+0x94/0x98)
  [512211.444427] [<c059311c>] (schedule+0x94/0x98) from [<c004620c>] (exit_mm+0xc0/0x138)
  [512211.444458] [<c004620c>] (exit_mm+0xc0/0x138) from [<c00464a4>] (do_exit+0x220/0x7e8)
  [512211.444458] [<c00464a4>] (do_exit+0x220/0x7e8) from [<c0046d58>] (do_group_exit+0x94/0xd0)
  [512211.444488] [<c0046d58>] (do_group_exit+0x94/0xd0) from [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568)
  [512211.444519] [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568) from [<c001162c>] (do_signal+0x94/0x4ec)
  [512211.444549] [<c001162c>] (do_signal+0x94/0x4ec) from [<c0011f14>] (do_notify_resume+0x28/0x64)
  [512211.444549] [<c0011f14>] (do_notify_resume+0x28/0x64) from [<c000e01c>] (work_pending+0x28/0x2c)
  [512331.443237] INFO: task gmain:28222 blocked for more than 120 seconds.
  [512331.443389] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.$
  [512331.443511] gmain           D c0592de8     0 28222   1414 0x00000200
  [512331.443542] [<c0592de8>] (__schedule+0x65c/0x7ec) from [<c059311c>] (schedule+0x94/0x98)$
  [512331.443572] [<c059311c>] (schedule+0x94/0x98) from [<c004620c>] (exit_mm+0xc0/0x138)
  [512331.443572] [<c004620c>] (exit_mm+0xc0/0x138) from [<c00464a4>] (do_exit+0x220/0x7e8)$
  [512331.443603] [<c00464a4>] (do_exit+0x220/0x7e8) from [<c0046d58>] (do_group_exit+0x94/0xd0)
  [512331.443634] [<c0046d58>] (do_group_exit+0x94/0xd0) from [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568)$
  [512331.443634] [<c00560f8>] (get_signal_to_deliver+0x4f0/0x568) from [<c001162c>] (do_signal+0x94/0x4ec)
  [512331.443664] [<c001162c>] (do_signal+0x94/0x4ec) from [<c0011f14>] (do_notify_resume+0x28/0x64)$
  [512331.443664] [<c0011f14>] (do_notify_resume+0x28/0x64) from [<c000e01c>] (work_pending+0x28/0x2c)

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.5.0-240-omap4 3.5.0-240.56
  ProcVersionSignature: Ubuntu 3.5.0-240.56-omap4 3.5.7.31
  Uname: Linux 3.5.0-240-omap4 armv7l
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: armhf
  Date: Mon Apr 21 10:18:15 2014
  MarkForUpload: True
  ProcEnviron:
   TERM=screen
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-ti-omap4
  UpgradeStatus: Upgraded to saucy on 2014-01-27 (83 days ago)

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