| Summary: | r600: XServer crash on Fusion system when xf86-video-ati compiled via clang | ||||||||||
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| Product: | xorg | Reporter: | Johannes Obermayr <johannesobermayr> | ||||||||
| Component: | Driver/Radeon | Assignee: | xf86-video-ati maintainers <xorg-driver-ati> | ||||||||
| Status: | RESOLVED MOVED | QA Contact: | Xorg Project Team <xorg-team> | ||||||||
| Severity: | normal | ||||||||||
| Priority: | medium | CC: | tk | ||||||||
| Version: | git | ||||||||||
| Hardware: | Other | ||||||||||
| OS: | All | ||||||||||
| Whiteboard: | |||||||||||
| i915 platform: | i915 features: | ||||||||||
| Attachments: |
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Can you install debugging symbols and get a proper backtrace with gdb (http://wiki.x.org/wiki/Development/Documentation/ServerDebugging)? Also please attach your dmesg output. Created attachment 58249 [details]
valgrind output
gdb doesn't provide a backtrace.
Maybe valgrind output helps.
(In reply to comment #2) > gdb doesn't provide a backtrace. Why not? How exactly did you try to get it? > Maybe valgrind output helps. I'm afraid not; I don't see anything obviously wrong in there. I haven't been able to reproduce such a crash on any of my machines, so we really will need to see a better backtrace. I recompiled xf86-video-ati via gcc and it works again. So there is sth. wrong in clang compiled code. To gather the backtrace I patched the XServer: https://build.opensuse.org/package/view_file?file=Use-external-tool-for-creating-backtraces-on-crashes.patch&package=xorg-x11-server&project=openSUSE%3A12.1 So it uses xorg-backtrace [and gdb]: https://build.opensuse.org/package/view_file?file=xorg-backtrace&package=xorg-x11-server&project=openSUSE%3A12.1 The output is then also written to /var/log/Xorg.0.log ... But it does not provide a backtrace, too. :( Created attachment 90030 [details] [review] Fix radeon kms with clang I had the same problem, machine would segfault with Xorg if compiled with clang on a Radeon HD6770. Compiling it with O0 would fix it, as well as using gcc. I went over the two clang warnings and fixed it, now it works fine with clang. I think this is fixed with http://cgit.freedesktop.org/xorg/xserver/commit/?id=63f83d1b7f496d05b409352749cdb6674d71cf80 Please test! -- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xorg/driver/xf86-video-ati/issues/28. |
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Created attachment 58244 [details] Xorg.0.log Trying to boot the system. When X system becomes loaded screen is flickering and XServer crashes.