[Bug runtime/14107] Bad user unwinding from kernel fatal signal handler for some x86_64 kernels

[mjw at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14107

Mark Wielaard <mjw at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #6 from Mark Wielaard <mjw at redhat dot com> 2012-05-21 11:01:19 UTC ---
Not really "fixed", but with the proper kernel patch, see comment #5, this
should just work. Added a testcase to check the system is behaving properly.

commit 07c9d78ebb28b888f01aed9c206e724f0e72db25
Author: Mark Wielaard <mjw@redhat.com>
Date:   Mon May 21 12:57:41 2012 +0200

    Add testcase for PR14107 Bad user unwinding from kernel fatal signal
handler

    This is really a kernel bug, see bug report, when the CFI for the assembly
    code is missing we cannot properly recover the register state for the user
    process and might give a bad/missing user backtrace.

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