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Message-ID: <46c1ffa7-7531-4d4c-b302-e3ae244b57a4@computerix.info> Date: Tue, 14 Jan 2025 10:59:44 +0100 From: Klaus Kusche <klaus.kusche@...puterix.info> To: Nathan Chancellor <nathan@...nel.org>, Josh Poimboeuf <jpoimboe@...nel.org> Cc: peterz@...radead.org, linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, Nick Desaulniers <ndesaulniers@...gle.com> Subject: Re: "Bad or missing .orc_unwind table. Disabling unwinder." Clang 19 problem? 6.12.8 problem? Hello, On 14/01/2025 10:51, Nathan Chancellor wrote: > Hi Josh, > >> Nathan, I think this is a Clang 19 issue, where one of the jump table >> entries is pointing past the end of the function. When we saw this in >> the past I think it was due to some leftover optimization, where the >> jump table entry ended up unused so it was harmless. Are you aware of >> any recent bugs in that area? > > I am not aware of any recent bugs there but if you or Klaus have a > configuration file that triggers this, I would be happy to bisect LLVM > to see what change introduced it to give us a better understanding of > what is happening here. Kernel .config files are attached to both https://bugzilla.kernel.org/show_bug.cgi?id=219685 https://bugzilla.kernel.org/show_bug.cgi?id=219686 -- Prof. Dr. Klaus Kusche Privat: Söllmnitz 32 d, D-07554 Gera/Söllmnitz 036695/859909 klaus.kusche@...puterix.info https://www.computerix.info Dienstlich: DHGE Gera, Weg der Freundschaft 4, D-07546 Gera 0365/4341-306 klaus.kusche@...e.de https://www.dhge.de
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