Public bug reported:
https://bugs.freedesktop.org/show_bug.cgi?id=39278
Summarized:
man mmap specifies the occasions when sigbus is sent:
SIGBUS Attempted access to a portion of the buffer that does not
correspond to the file (for
example, beyond the end of the file, including the case where
another process has trun‐
cated the file).
If users are using homedirectories on NFS; a simple NFS failure may
cause a file size to change.
Users originally reported this problem running eclipse and seeing 3-4
crashes per day.
I believe the workaround we are proposing is to modify
/etc/fonts/fonts.conf
<!-- Font cache directory list -->
<cachedir>/var/cache/fontconfig</cachedir>
<cachedir>~/.fontconfig</cachedir>
<config>
and just remove the ~/.fontconfig section (possibly replacing it with something
on local disk if that is supported.)
antarus@goats2 /etc/fonts $ lsb_release -rd
Description: Ubuntu 10.04.2 LTS
Release: 10.04
antarus@goats2 /etc/fonts $ apt-cache policy fontconfig
fontconfig:
Installed: 2.8.0-2ubuntu1
Candidate: 2.8.0-2ubuntu1
I expect fontconfig to handle mmap's properly. Upstream is aware of the problem
but I don't see a fix yet.
The application SIGBUS's
** Affects: fontconfig
Importance: Unknown
Status: Unknown
** Affects: fontconfig (Ubuntu)
Importance: Undecided
Status: New
** Bug watch added: freedesktop.org Bugzilla #39278
http://bugs.freedesktop.org/show_bug.cgi?id=39278
** Also affects: fontconfig via
http://bugs.freedesktop.org/show_bug.cgi?id=39278
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/820134
Title:
libfontconfig causes SIGBUS due to mmap and NFS interaction.
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