linux-kernel - Re: include/linux/slab.h:552:15: error: type defaults to 'int' in declaration of 'kmem_buckets

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Message-ID: <Zs/X1DT9VOtHulk1@rli9-mobl>
Date: Thu, 29 Aug 2024 10:07:16 +0800
From: Philip Li <philip.li@...el.com>
To: Kees Cook <kees@...nel.org>
CC: kernel test robot <lkp@...el.com>, <oe-kbuild-all@...ts.linux.dev>,
	<linux-kernel@...r.kernel.org>, Vlastimil Babka <vbabka@...e.cz>, "Arnd
 Bergmann" <arnd@...db.de>
Subject: Re: include/linux/slab.h:552:15: error: type defaults to 'int' in
 declaration of 'kmem_buckets_create'

On Wed, Aug 28, 2024 at 06:47:59PM -0700, Kees Cook wrote:
> On Wed, Aug 28, 2024 at 05:21:04AM +0800, kernel test robot wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   3ec3f5fc4a91e389ea56b111a73d97ffc94f19c6
> > commit: b32801d1255be1da62ea8134df3ed9f3331fba12 mm/slab: Introduce kmem_buckets_create() and family
> > date:   8 weeks ago
> > config: x86_64-randconfig-072-20240827 (https://download.01.org/0day-ci/archive/20240828/202408280559.FIsoHAAc-lkp@intel.com/config)
> > compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
> > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240828/202408280559.FIsoHAAc-lkp@intel.com/reproduce)
> > 
> > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > the same patch/commit), kindly add following tags
> > | Reported-by: kernel test robot <lkp@...el.com>
> > | Closes: https://lore.kernel.org/oe-kbuild-all/202408280559.FIsoHAAc-lkp@intel.com/
> > 
> > All errors (new ones prefixed by >>):
> > 
> >    arch/x86/include/asm/fpu/types.h:355:22: note: in expansion of macro 'PAGE_SIZE'
> >      355 |         u8 __padding[PAGE_SIZE];
> >          |                      ^~~~~~~~~
> >    arch/x86/include/asm/page_types.h:10:33: warning: "CONFIG_PAGE_SHIFT" is not defined, evaluates to 0 [-Wundef]
> >       10 | #define PAGE_SHIFT              CONFIG_PAGE_SHIFT
> >          |                                 ^~~~~~~~~~~~~~~~~
> 
> This continues to be a problem with CONFIG_PAGE_SHIFT with this config,
> and is a known problem with no clear fix[1]. I think reports could be
> silenced for now.

Got it, we will configure the bot to ignore the further report.

> 
> -Kees
> 
> [1] https://lore.kernel.org/all/85bb8bbc-f48d-46fd-aebb-03b2f7d3980a@app.fastmail.com/
> 
> -- 
> Kees Cook
>