linux-kernel - Re: [PATCH RFC v3 02/10] sched_getattr: port to copy_struct_to

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Message-ID: <87r04xdd93.fsf@oldenburg.str.redhat.com>
Date: Mon, 20 Jan 2025 10:51:36 +0100
From: Florian Weimer <fweimer@...hat.com>
To: Xi Ruoyao <xry111@...111.site>
Cc: Christian Brauner <brauner@...nel.org>,  Aleksa Sarai
 <cyphar@...har.com>,  Ingo Molnar <mingo@...hat.com>,  Peter Zijlstra
 <peterz@...radead.org>,  Juri Lelli <juri.lelli@...hat.com>,  Vincent
 Guittot <vincent.guittot@...aro.org>,  Dietmar Eggemann
 <dietmar.eggemann@....com>,  Steven Rostedt <rostedt@...dmis.org>,  Ben
 Segall <bsegall@...gle.com>,  Mel Gorman <mgorman@...e.de>,  Valentin
 Schneider <vschneid@...hat.com>,  Alexander Viro
 <viro@...iv.linux.org.uk>,  Jan Kara <jack@...e.cz>,  Arnd Bergmann
 <arnd@...db.de>,  Shuah Khan <shuah@...nel.org>,  Kees Cook
 <kees@...nel.org>,  Mark Rutland <mark.rutland@....com>,
  linux-kernel@...r.kernel.org,  linux-api@...r.kernel.org,
  linux-fsdevel@...r.kernel.org,  linux-arch@...r.kernel.org,
  linux-kselftest@...r.kernel.org,  libc-alpha@...rceware.org
Subject: Re: [PATCH RFC v3 02/10] sched_getattr: port to copy_struct_to_user

* Xi Ruoyao:

>> > So should we drop the test before Glibc-2.41 release?  I'm seeing the
>> > failure during my machine test.
>> I was waiting for a verdict from the kernel developers.  I didn't expect
>> such a change to happen given the alleged UAPI policy.
>
> But 6.13 is already released without reverting the behavior change
> now...  So is this the "final" verdict?

I had originally missed the Linux 6.13 release.  I've submitted a glibc
patch:

  [PATCH] Linux: Do not check unused bytes after sched_getattr in
  tst-sched_setattr
  <https://inbox.sourceware.org/libc-alpha/87v7u9ddas.fsf@oldenburg.str.redhat.com/>

Thanks,
Florian