Ubuntu
linux package

apport triggers hung task timeout

Bug #257331 reported by Matt Zimmerman
12
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Won't Fix
Low
Unassigned

Bug Description

While apport is running, saving a crash dump for a large process, the kernel complains about the process being hung. This is presumably harmless, but it's a very long message with a stack trace in it and could be alarming to system administrators. Perhaps the check should be disabled for this case, since it's not unexpected?

[925911.206382] INFO: task firefox:10194 blocked for more than 120 seconds.
[925911.206384] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
 message.
[925911.206386] firefox D f6301920 0 10194 1

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
NonfreeKernelModules: nvidia
Package: linux-image-2.6.26-5-generic 2.6.26-5.15 [modified: lib/modules/2.6.26-5-generic/modules.pcimap lib/modules/2.6.26-5-generic/modules.dep lib/modules/2.6.26-5-generic/modules.ieee1394map lib/modules/2.6.26-5-generic/modules.usbmap lib/modules/2.6.26-5-generic/modules.isapnpmap lib/modules/2.6.26-5-generic/modules.seriomap lib/modules/2.6.26-5-generic/modules.alias lib/modules/2.6.26-5-generic/modules.symbols]
ProcCmdLine: root=UUID=daf1bf61-d974-4e90-b2c7-5f4dfa4e56cf ro quiet splash crashkernel=384M-2G:64M@16M,2G-:128M@16M
ProcEnviron:
 LC_COLLATE=C
 PATH=/home/username/bin:/usr/lib/ccache:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/sbin:/usr/sbin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/zsh
ProcVersionSignature: Ubuntu 2.6.26-5.15-generic
SourcePackage: linux

Revision history for this message
Matt Zimmerman (mdz) wrote :
Revision history for this message
Leann Ogasawara (leannogasawara) wrote :

The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would appreciate it if you could please test this newer 2.6.27 Ubuntu kernel. There are one of two ways you should be able to test:

1) If you are comfortable installing packages on your own, the linux-image-2.6.27-* package is currently available for you to install and test.

--or--

2) The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer 2.6.27 Ubuntu kernel. Alpha5 is set to be released Thursday Sept 4. Please watch http://www.ubuntu.com/testing for Alpha5 to be announced. You should then be able to test via a LiveCD.

Please let us know immediately if this newer 2.6.27 kernel resolves the bug reported here or if the issue remains. More importantly, please open a new bug report for each new bug/regression introduced by the 2.6.27 kernel and tag the bug report with 'linux-2.6.27'. Also, please specifically note if the issue does or does not appear in the 2.6.26 kernel. Thanks again, we really appreicate your help and feedback.

Revision history for this message
Neil Munro (neilmunro-deactivatedaccount) wrote :

The Intrepid Ibex 8.10 Beta release was most recently announced - http://www.ubuntu.com/testing/intrepid/beta . It contains the 2.6.27 Ubuntu kernel. It would be great if you could test and verify if this is still an issue. The status is being set to Incomplete until we receive further feedback. Thanks.

Changed in linux:
status: New → Incomplete
Revision history for this message
Matt Zimmerman (mdz) wrote :

There is no reason to believe this is fixed in 2.6.27. There is nothing in the changelog about it, in fact, there is every indication that this is just behaving as designed but doesn't account for the use case of apport.

Steps to reproduce:
1. Ensure that apport is enabled
2. Start up a nice big firefox process with lots of tabs
3. kill it with SIGSEGV

Changed in linux:
importance: Undecided → Low
status: Incomplete → Triaged
Leann Ogasawara (leannogasawara)
tags: added: kj-omit
Revision history for this message
Brad Figg (brad-figg) wrote : Unsupported series, setting status to "Won't Fix".

This bug was filed against a series that is no longer supported and so is being marked as Won't Fix. If this issue still exists in a supported series, please file a new bug.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: Triaged → Won't Fix
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.
Subscribing...

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.