Red Hat Bugzilla – Bug 176566
Firefox crashes when asked to show some pages
Last modified: 2007-11-30 17:11:19 EST
Description of problem:
firefox crashes when accessing http://ars.userfriendly.org/cartoons/?id=20051223
Version-Release number of selected component (if applicable):
Always with the given page
Steps to Reproduce:
1. firefox http://ars.userfriendly.org/cartoons/?id=20051223
Pango-ERROR **: file basic-fc.c: line 347 (basic_engine_shape): assertion
failed: (face != NULL)
A cartoon ;-)
I have looked at several pages, but this is the only one up to here.
If I download the firefox-1.5 tar file, and run from a user sub-directory, I
have no problems with pages I can't otherwise load.
If I use the RPM, firefox-1.5-3, it exits with "Exit 133" and leaves a core file.
I've seen the PANGO error once or twice, but not every time.
Considering that I don't have this problem with the version from mozilla.org,
this might be a compiler error (or libstdc++). Has this problem escalated just
this week? It seems so to me.
Seeing crashes here too, on random pages, sometimes when trying to do stuff in
Bugzilla. Will try to gather some debugging info and report back.
May be related to bug #176639 (no idea, but saw it in Bugzilla, so it's worth
keeping any eye on it). My language is set to en_AU.UTF-8.
Pentium-M notebook: 1.5-3 has no problems
Pentium II notebook: core dumps
Both systems are up-to-date wrt development.
The Pentium-II notebook was running firefox in safe-mode.
Forgot to mention, I'm running with SELinux enabled, if that's important (it was
in bug #175275).
No idea what SIG33 means, but it nevertheless appear to have hung FF for me,
when run with -g option (inside gdb). I have firefox-debuginfo loaded.
Attachement will follow.
Created attachment 122669 [details]
Backtrace of the "hung" firefox process
No idea if the process is really hung of if it's just terribly slow. I'm
compiling the kernel at the same time and kmalloc debugging is on, so it could
be just very, very slow. Anyhow, I never noticed the SIG33 thingy before, so
I'm reporting it here.
Does disabling selinux fix the issue? If so, does updating to
I do not have selinux enabled and the problem occurs.
I do have SELinux disabled right now due to bug #176839, but I haven't used FF
that extensively to be sure (i.e. it didn't crash yet). Crashes are intermittent
on my system anyway, so it's a bit difficult to replicate...
Most definitely happens with SELinux disabled too. Just had a crash...
Now firefox-1.5-4, everything up to date as of today (20060105), no SELinux.
Crashes reliably with the page I reported originally.
What processors are being used? I run reliably on a Pentium-M, but my Pentium
II crashes on the same pages.
I've got a Pentium 4 based Celeron. I'm seeing intermittent crashes only.
firefox-22.214.171.124-2: Can't crash it in the same manner any more.
Unrelated to this bug, but I can crash it with:
126.96.36.199-7 now, doesn't crash with the original page. The crash in #15 seems
unrelated in any case.
BTW, my CPU is a Pentium-M/1500.
Should I close this now?
I haven't had a crash of FF in a long time as well.
The fix for #15 is scheduled for 188.8.131.52, which will be released some time in
the next few weeks. This is unrelated to this bug though.
The original bug was most likely a GCC compiler bug, as the binary from
mozilla.org did not have this problem (#1). It most likely could have been
fixed before 184.108.40.206's release, after one of the numerous GCC updates going on
during that period.
I say close it.