Received-SPF: pass (google.com: domain of linux-kernel+bounces-47550-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
Date: Thu, 1 Feb 2024 13:57:47 +1100
From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Marco Elver <elver@google.com>, Linux Kernel Mailing List
 <linux-kernel@vger.kernel.org>, Linux Next Mailing List
 <linux-next@vger.kernel.org>
Subject: linux-next: build failure after merge of the mm tree
Message-ID: <20240201135747.18eca98e@canb.auug.org.au>
Precedence: bulk
MIME-Version: 1.0
Content-Type: multipart/signed; boundary="Sig_/dsqBj0nMlICd8gJX8CY2S6H";
 protocol="application/pgp-signature"; micalg=pgp-sha256

--Sig_/dsqBj0nMlICd8gJX8CY2S6H
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable

Hi all,

After merging the mm tree, today's linux-next build (i386 defconfig)
failed like this:

In file included from arch/x86/include/asm/string.h:3,
                 from include/linux/string.h:61,
                 from arch/x86/include/asm/page_32.h:18,
                 from arch/x86/include/asm/page.h:14,
                 from arch/x86/include/asm/thread_info.h:12,
                 from include/linux/thread_info.h:60,
                 from include/linux/spinlock.h:60,
                 from include/linux/wait.h:9,
                 from include/linux/wait_bit.h:8,
                 from include/linux/fs.h:6,
                 from include/linux/debugfs.h:15,
                 from lib/stackdepot.c:17:
In function 'depot_alloc_stack',
    inlined from 'stack_depot_save_flags' at lib/stackdepot.c:688:4:
arch/x86/include/asm/string_32.h:150:25: error: '__builtin_memcpy' specifie=
d bound 4294967295 exceeds maximum object size 2147483647 [-Werror=3Dstring=
op-overflow=3D]
  150 | #define memcpy(t, f, n) __builtin_memcpy(t, f, n)
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~
lib/stackdepot.c:459:9: note: in expansion of macro 'memcpy'
  459 |         memcpy(stack->entries, entries, flex_array_size(stack, entr=
ies, nr_entries));
      |         ^~~~~~
cc1: all warnings being treated as errors

Presumably caused by commit

  d869d3fb362c ("stackdepot: use variable size records for non-evictable en=
tries")

from the mm-unstable branch of the mm tree.

I have reverted that commit and the following one for today.

--=20
Cheers,
Stephen Rothwell

--Sig_/dsqBj0nMlICd8gJX8CY2S6H
Content-Type: application/pgp-signature
Content-Description: OpenPGP digital signature

-----BEGIN PGP SIGNATURE-----

iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAmW7CKsACgkQAVBC80lX
0GwhBgf/S8pw3lrXhEH1f9k4juzn0PrXKu3Sv62t9OFfYfettQCTmE0AvxK4ZOKR
ebU3u49ici6EJB7Y/yk/VBtMZSAHh21v7HbRpqoF4WWG/LlLecPqTT/8PzGCOhun
9Agx+sY22x/bNyUqyofAFxcf+cMLyzfZVfhWjqN69Jayq7kgsNIK628dFRM9p4PO
mkIcHU6WpnIO2MDPtumM+xjrJf34dDaVfbJutx08BX0q9gkc+KhXKJQgSHoCGB5g
sqCEwZQps2/qPUWxX79dCGLuGaZc7mL7KXHOTf0vWUNiauvzVMVCCqCw0JrojjXK
6MWvegiaJ9UWuvBJkQ0E4MDICJRw6w==
=ww20
-----END PGP SIGNATURE-----

--Sig_/dsqBj0nMlICd8gJX8CY2S6H--