Bug 677469 - Sigbus appears when /dev/shm is out of free space
Summary: Sigbus appears when /dev/shm is out of free space
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: pulseaudio
Version: 19
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Lennart Poettering
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-02-14 22:09 UTC by Zdenek Kabelac
Modified: 2015-02-17 13:38 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-02-17 13:38:32 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)
Backtrace of crashed applications (2.99 KB, text/plain)
2011-02-14 22:09 UTC, Zdenek Kabelac
no flags Details

Description Zdenek Kabelac 2011-02-14 22:09:56 UTC
Created attachment 478722 [details]
Backtrace of crashed applications

Description of problem:

Programs like  Mozilla could be easily made unusable by overfilling space on /dev/shm.  Although it's questionable why Mozilla insists on working with sound device when I've disabled any system sounds in some gnome GUI (when it worked - now with moving rawhide, it's actually hidden mystery where it could be properly disabled).

The problem could be triggered by filling /dev/shm space completely - which could be easily done via i.e. dd command.

Then it looks like code is trying to derefence mmaped area - which doesn't have yet existing backup page in memory - and unhandle sigbus error quits application (Mozilla in my case).

Unsure how the solution should be handled - maybe PA could reserve needed spaces on /dev/shm via fallocate() ? (if that's the real reason for this crash
from discussion with Lennart)

Version-Release number of selected component (if applicable):
pulseaudio-0.9.22-3.fc15.x86_64
firefox-4.0-0.15b11.fc15.x86_64
kernel-2.6.38-0.rc4.git0.2.fc15.x86_64

How reproducible:
with filled /dev/shm - use i.e. this:
/usr/bin/ddd  --gdb -- --args  /usr/lib64/xulrunner-2/xulrunner-bin /usr/lib64/firefox-4/application.ini -UILocale cs

Steps to Reproduce:
1.  dd if=/dev/zero of=/dev/shm/fill bs=4k
2.  start mozilla
3.  open any menu windows
  
Actual results:


Expected results:
Mozilla doesn't crash where there is some audio error.

Additional info:

Comment 1 Fedora End Of Life 2013-04-03 15:58:26 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 19 development cycle.
Changing version to '19'.

(As we did not run this process for some time, it could affect also pre-Fedora 19 development
cycle bugs. We are very sorry. It will help us with cleanup during Fedora 19 End Of Life. Thank you.)

More information and reason for this action is here:
https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora19

Comment 2 Fedora End Of Life 2015-01-09 16:34:15 UTC
This message is a notice that Fedora 19 is now at end of life. Fedora 
has stopped maintaining and issuing updates for Fedora 19. It is 
Fedora's policy to close all bug reports from releases that are no 
longer maintained. Approximately 4 (four) weeks from now this bug will
be closed as EOL if it remains open with a Fedora 'version' of '19'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

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able to fix it before Fedora 19 is end of life. If you would still like 
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version prior this bug is closed as described in the policy above.

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Comment 3 Fedora End Of Life 2015-02-17 13:38:32 UTC
Fedora 19 changed to end-of-life (EOL) status on 2015-01-06. Fedora 19 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
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current release. If you experience problems, please add a comment to this
bug.

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