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From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug libelf/29000] Conditional jump or move depends on uninitialised
 value in elf_compress_gnu
Date: Wed, 30 Mar 2022 14:48:41 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29000

Mark Wielaard <mark at klomp dot org> changed:

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

--- Comment #5 from Mark Wielaard <mark at klomp dot org> ---
(In reply to Evgeny Vereshchagin from comment #4)
> I rebased the "fuzz" branch on top of my fork and ran all the tests in
> https://github.com/evverx/elfutils/pull/73. MSan no longer complains. Tha=
nks!

Thanks for testing. Pushed as:

commit e3e2ae06fbfcd1b2f3de6945689ef9d9c94a2123
Author: Mark Wielaard <mark@klomp.org>
Date:   Wed Mar 30 00:17:08 2022 +0200

    libelf: Also copy/convert partial datastructures in xlate functions

    The generated xlate functions can only convert full datastructures,
    dropping any trailing partial data on the floor. That means some of
    the data might be undefined. Just copy over the trailing bytes as
    is. That data isn't really usable. But at least it is defined data.

    https://sourceware.org/bugzilla/show_bug.cgi?id=3D29000

    Signed-off-by: Mark Wielaard <mark@klomp.org>

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