[Bug 19621] New: Xorg crashed with SIGFPE in miScreenInit()

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Jan 16 14:03:09 PST 2009


           Summary: Xorg crashed with SIGFPE in miScreenInit()
           Product: xorg
           Version: git
          Platform: Other
               URL: https://bugs.launchpad.net/ubuntu/+source/xorg-
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: kees at outflux.net
         QAContact: xorg-team at lists.x.org

Created an attachment (id=22041)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=22041)
fix FPE in libfb

The radeon driver under strange situations when plugging/unplugging an external
display can call fbScreenInit with 0 dpi, leading to an FPE.

 miScreenInit ()
 fbFinishScreenInit () from /usr/lib/xorg/modules//libfb.so
 fbScreenInit () from /usr/lib/xorg/modules//libfb.so
 ?? () from /usr/lib/xorg/modules/drivers//radeon_drv.so
 AddScreen ()

Attached is a patch to fix the FPE.

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