linux-kernel - Re: linux-next: build warning after merge of the tip tree

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: <20240919082119.62324e11@canb.auug.org.au>
Date: Thu, 19 Sep 2024 08:21:19 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 "H. Peter Anvin" <hpa@...or.com>, Peter Zijlstra <peterz@...radead.org>
Cc: Kan Liang <kan.liang@...ux.intel.com>, Linux Kernel Mailing List
 <linux-kernel@...r.kernel.org>, Linux Next Mailing List
 <linux-next@...r.kernel.org>
Subject: Re: linux-next: build warning after merge of the tip tree

Hi all,

On Wed, 11 Sep 2024 15:38:54 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> After merging the tip tree, today's linux-next build (arm
> multi_v7_defconfig) produced this warning:
> 
> kernel/events/core.c: In function 'perf_event_setup_cpumask':
> kernel/events/core.c:14012:13: warning: the comparison will always evaluate as 'true' for the address of 'thread_sibling' will never be NULL [-Waddress]
> 14012 |         if (!topology_sibling_cpumask(cpu)) {
>       |             ^
> In file included from include/linux/topology.h:30,
>                  from include/linux/gfp.h:8,
>                  from include/linux/xarray.h:16,
>                  from include/linux/list_lru.h:14,
>                  from include/linux/fs.h:13,
>                  from kernel/events/core.c:11:
> include/linux/arch_topology.h:78:19: note: 'thread_sibling' declared here
>    78 |         cpumask_t thread_sibling;
>       |                   ^~~~~~~~~~~~~~
> 
> Introduced by commit
> 
>   4ba4f1afb6a9 ("perf: Generic hotplug support for a PMU with a scope")

This commit is now in Linus' tree and the warning is till there :-(  In
fact this is a build failure for some configurations.   A fix was
posted on Sep 13 (12?), please get it to Linus as soon as possible.

-- 
Cheers,
Stephen Rothwell

Content of type "application/pgp-signature" skipped