Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Sender: Valdis Kletnieks <valdis@vt.edu>
From:   "Valdis =?utf-8?Q?Kl=c4=93tnieks?=" <valdis.kletnieks@vt.edu>
To:     Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc:     kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org
Subject: linux-next 20201126 - build error on arm allmodconfig
Mime-Version: 1.0
Content-Type: multipart/signed; boundary="==_Exmh_1606397102_2385P";
         micalg=pgp-sha1; protocol="application/pgp-signature"
Content-Transfer-Encoding: 7bit
Date:   Thu, 26 Nov 2020 08:25:02 -0500
Message-ID: <24105.1606397102@turing-police>
Precedence: bulk

--==_Exmh_1606397102_2385P
Content-Type: text/plain; charset=us-ascii

Seems something is giving it indigestion regarding asmlinkage...

  CC      arch/arm/mm/kasan_init.o
In file included from ./include/linux/kasan.h:15,
                 from arch/arm/mm/kasan_init.c:11:
./arch/arm/include/asm/kasan.h:26:11: error: expected ';' before 'void'
 asmlinkage void kasan_early_init(void);
           ^~~~~
           ;
make[2]: *** [scripts/Makefile.build:283: arch/arm/mm/kasan_init.o] Error 1
make[1]: *** [scripts/Makefile.build:500: arch/arm/mm] Error 2
make: *** [Makefile:1803: arch/arm] Error 2

Git bisect points at:

commit 2df573d2ca4c1ce6ea33cb7849222f771e759211
Author: Andrey Konovalov <andreyknvl@google.com>
Date:   Tue Nov 24 16:45:08 2020 +1100

    kasan: shadow declarations only for software modes

Looks like it's this chunk:

diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index 59538e795df4..26f2ab92e7ca 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -11,7 +11,6 @@ struct task_struct;

 #ifdef CONFIG_KASAN

-#include <linux/pgtable.h>
 #include <asm/kasan.h>

Testing shows putting that #include back in makes it compile correctly,
but it's not obvious why putting that back makes 'asmlinkage' recognized.

"You are in a twisty little maze of #includes, all different"... :)

--==_Exmh_1606397102_2385P
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Comment: Exmh version 2.9.0 11/07/2018
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=edQj
-----END PGP SIGNATURE-----

--==_Exmh_1606397102_2385P--