linux-kernel - Re: objtool warning, branch, patch, and .config (GCC bug)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 26 May 2022 10:08:49 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Josh Poimboeuf <jpoimboe@...hat.com>,
        linux-toolchains@...r.kernel.org
Subject: Re: objtool warning, branch, patch, and .config (GCC bug)

On Thu, May 26, 2022 at 10:03:13AM +0200, Peter Zijlstra wrote:

> Which is just bloody weird/broken if you ask me. What's worse, GCC-10
> does the same. Only when I use GCC-11 do I get sensible code again:

Just to clarify, I can reproduce using:

gcc-9 (Debian 9.4.0-5) 9.4.0
gcc-10 (Debian 10.3.0-15) 10.3.0

The good compiler is:

gcc-11 (Debian 11.3.0-1) 11.3.0