The problem here is that the nanojit output tries to call functions in xulrunner using plain BL instructions, causing the CPU to interpret the called (Thumb-2) code as ARM... which doesn't work.
The symptoms are random SIGILLs and segfaults in firefox-3.5.
Apparently, the required support has been implemented in mozilla-central for the last few months, but unfortunately there is not a straightforward patch against the current Ubuntu source to fix this :(
Binary package hint: xulrunner-1.9.1
The problem here is that the nanojit output tries to call functions in xulrunner using plain BL instructions, causing the CPU to interpret the called (Thumb-2) code as ARM... which doesn't work.
The symptoms are random SIGILLs and segfaults in firefox-3.5.
Apparently, the required support has been implemented in mozilla-central for the last few months, but unfortunately there is not a straightforward patch against the current Ubuntu source to fix this :(
Possible workarounds: hg.mozilla. org/releases/ mozilla- 1.9.2/ ... it's still in beta though, and there are unresolved issues about openjdk java plugin support --- see https:/ /blueprints. launchpad. net/ubuntu/ +spec/desktop- lucid-new- firefox- support- model)
1) Update to the firefox 3.6 / mozilla 1.9.2 branch on mozilla-central (http://
2) Build all of xulrunner with -marm (firefox may also need -marm --- it depends on whether the nanojit output might call absolutely anything or just support functions in xulrunner)
The most recent relevant commit on mozilla-central is http:// hg.mozilla. org/mozilla- central/ rev/f8ce8b4d6ce 1
It looks like the relevant changes weren't on the mozilla 1.9.1 / firefox 3.5 branch.
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu lucid (development branch)
Release: 10.04
Codename: lucid
$ apt-cache policy xulrunner-1.9.1 firefox-3.5 nobinonly- 0ubuntu2 nobinonly- 0ubuntu2 nobinonly- 0ubuntu2 0 ports.ubuntu. com/main Packages dpkg/status -0ubuntu2 -0ubuntu2 -0ubuntu2 0 ports.ubuntu. com lucid/main Packages dpkg/status
xulrunner-1.9.1:
Installed: 1.9.1.5+
Candidate: 1.9.1.5+
Version table:
*** 1.9.1.5+
500 http://
100 /var/lib/
firefox-3.5:
Installed: 3.5.5+nobinonly
Candidate: 3.5.5+nobinonly
Version table:
*** 3.5.5+nobinonly
500 http://
100 /var/lib/