[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

--- Comment #5 from Mark Wielaard <mjw at redhat dot com> 2012-05-15 14:14:41 UTC ---
Looks like the RHEL6 kernel is missing this:

commit 9e565292270a2d55524be38835104c564ac8f795
Author: Roland McGrath <roland@redhat.com>
Date:   Thu May 13 21:43:03 2010 -0700

    x86: Use .cfi_sections for assembly code

    The newer assemblers support the .cfi_sections directive so we can put
    the CFI from .S files into the .debug_frame section that is preserved
    in unstripped vmlinux and in separate debuginfo, rather than the
    .eh_frame section that is now discarded by vmlinux.lds.S.

    Signed-off-by: Roland McGrath <roland@redhat.com>
    LKML-Reference: <20100514044303.A6FE7400BE@magilla.sf.frob.com>
    Signed-off-by: H. Peter Anvin <hpa@zytor.com>

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