touch-packages team mailing list archive

[Colin Watson <cjwatson@xxxxxxxxxxxxx>]

The verification of the Stable Release Update for libjpeg-turbo has
completed successfully and the package has now been released to
-updates.  Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

** Summary changed:

- Initialization leaks file descriptors to /prox/self/auxv
+ Initialization leaks file descriptors to /proc/self/auxv

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https://bugs.launchpad.net/bugs/1189939

Title:
  Initialization leaks file descriptors to /proc/self/auxv

Status in “libjpeg-turbo” package in Ubuntu:
  Invalid
Status in “libjpeg-turbo” source package in Precise:
  Fix Released
Status in “libjpeg-turbo” source package in Quantal:
  Invalid
Status in “libjpeg-turbo” source package in Raring:
  Invalid
Status in “libjpeg-turbo” source package in Saucy:
  Invalid

Bug description:
  [impact]
  In precise only, an Ubuntu-specific patch (FixLibraryStartup.patch) causes /proc/self/auxv to be opened on library initialization, but the file is never closed.  For long running processes that periodically re-initialize the library (Firefox's plugin-container loading the VLC plugin for me), this leads to the available file descriptors being exhausted.

  This also causes
  https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1177684.

  [test case]
  Fresh and clean Ubuntu Precise 12.04.2 install

  # apt-get install apache2-mpm-itk libapache2-mod-php5 php5-gd

  Restart Apache to ensure gd.so is loaded

  # for pid in `pidof apache2`; do find /proc/$pid/fd -ls; done | awk '/auxv/ {print $11" "$12" "$13}'
  # apache2ctl graceful
  # for pid in `pidof apache2`; do find /proc/$pid/fd -ls; done | awk '/auxv/ {print $11" "$12" "$13}'
  # apache2ctl graceful
  # for pid in `pidof apache2`; do find /proc/$pid/fd -ls; done | awk '/auxv/ {print $11" "$12" "$13}'
  .. etc

  [regression potential]
  This affects patch designed for ARM. Although all it does it properly close the file descriptor, I have not specifically tested it on ARM.

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