[Mono-bugs] [Bug 508389] New: Mono 2.4 crashes due to accessing freed data structures

[bugzilla_noreply at novell.com]

http://bugzilla.novell.com/show_bug.cgi?id=508389


           Summary: Mono 2.4 crashes due to accessing freed data
                    structures
    Classification: Mono
           Product: Mono: Runtime
           Version: 2.4.x
          Platform: PowerPC-64
        OS/Version: SLES 11
            Status: NEW
          Severity: Critical
          Priority: P5 - None
         Component: generics
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: uweigand at de.ibm.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.10)
Gecko/20070313 Fedora/1.5.0.10-1_EL4 (CK-IBM) (CK-IBM) Firefox/1.5.0.10

We've been running into random mono crashes due to what appears to
be accesses to data structures that were already freed.

The test case is the OpenSim build and unit-test process using NAnt.
For some reason I don't quite understand the bug seems to trigger
very frequently on PowerPC64 (to the extent that 75% or so of all
OpenSim build attempts never complete), and sometimes on x86-64,
but rarely (never?) on 32-bit ppc or i386.

See the following mail to mono-dev for a more detailed explanation:
http://lists.ximian.com/pipermail/mono-devel-list/2009-May/032301.html

Reproducible: Sometimes

Steps to Reproduce:
Build OpenSim on PowerPC-64.

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