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Date:   Fri, 12 Jul 2019 10:30:17 -0700 (PDT)
From:   David Rientjes <rientjes@google.com>
To:     Arnd Bergmann <arnd@arndb.de>
cc:     Christoph Lameter <cl@linux.com>,
        Pekka Enberg <penberg@kernel.org>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Roman Gushchin <guro@fb.com>,
        Shakeel Butt <shakeelb@google.com>,
        Vladimir Davydov <vdavydov.dev@gmail.com>,
        Andrey Konovalov <andreyknvl@google.com>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com
Subject: Re: [PATCH] slab: work around clang bug #42570
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On Fri, 12 Jul 2019, Arnd Bergmann wrote:

> Clang gets rather confused about two variables in the same special
> section when one of them is not initialized, leading to an assembler
> warning later:
> 
> /tmp/slab_common-18f869.s: Assembler messages:
> /tmp/slab_common-18f869.s:7526: Warning: ignoring changed section attributes for .data..ro_after_init
> 
> Adding an initialization to kmalloc_caches is rather silly here
> but does avoid the issue.
> 
> Link: https://bugs.llvm.org/show_bug.cgi?id=42570
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Acked-by: David Rientjes <rientjes@google.com>

Let me followup on the clang bug as well.