linux-kernel - Re: [PATCH RESEND] powerpc/tools: drop `-o pipefail` in gcc check scripts

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] [day] [month] [year] [list]

Message-ID: <qtnjbiz2wq35mmisa2dljpvslnmc3wmygxsq5usmiml223ry3r@eze7qwlrgx5p>
Date: Thu, 20 Nov 2025 12:15:56 -0800
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: maddy@...ux.ibm.com, mpe@...erman.id.au, linuxppc-dev@...ts.ozlabs.org
Cc: npiggin@...il.com, christophe.leroy@...roup.eu, 
	linux-kernel@...r.kernel.org, joe.lawrence@...hat.com, Jan Stancek <jstancek@...hat.com>
Subject: Re: [PATCH RESEND] powerpc/tools: drop `-o pipefail` in gcc check
 scripts

On Wed, Nov 12, 2025 at 02:56:05PM -0800, Josh Poimboeuf wrote:
> On Tue, Sep 23, 2025 at 05:32:16PM +0200, Jan Stancek wrote:
> > We've been observing rare non-deterministic kconfig failures during
> > olddefconfig, where ARCH_USING_PATCHABLE_FUNCTION_ENTRY was getting
> > disabled and with it number of other config options that depend on it.
> > 
> > The reason is that gcc-check-fpatchable-function-entry.sh can fail
> > if `grep -q` (or scripts/dummy-tools/gcc) is fast enough to exit while
> > there is still someone writing on other side of pipe. `pipefail`
> > propagates that error up to kconfig.
> 
> Ping?  This fixes a nasty build bug, any objections to merging?

Ping?

-- 
Josh