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From: Catalin Marinas <catalin.marinas@arm.com>
To: kbuild test robot <lkp@intel.com>
Cc: kbuild-all@01.org, Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Vignesh R <vigneshr@ti.com>
Subject: Re: [PATCH] mm: kmemleak: Avoid using __va() on addresses that don't have a lowmem mapping
Date: Tue, 16 Aug 2016 18:31:44 +0100	[thread overview]
Message-ID: <20160816173143.GC7609@e104818-lin.cambridge.arm.com> (raw)
In-Reply-To: <201608170130.HGiTRP7J%fengguang.wu@intel.com>

On Wed, Aug 17, 2016 at 01:15:53AM +0800, kbuild test robot wrote:
> [auto build test ERROR on mmotm/master]
> [also build test ERROR on v4.8-rc2 next-20160816]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Catalin-Marinas/mm-kmemleak-Avoid-using-__va-on-addresses-that-don-t-have-a-lowmem-mapping/20160816-232733
> base:   git://git.cmpxchg.org/linux-mmotm.git master
> config: tile-tilegx_defconfig (attached as .config)
> compiler: tilegx-linux-gcc (GCC) 4.6.2
> reproduce:
>         wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=tile 
> 
> All error/warnings (new ones prefixed by >>):
> 
>    In file included from include/linux/kmemleak.h:24:0,
>    from include/linux/slab.h:117,
>    from arch/tile/include/asm/pgtable.h:27,
>    from mm/init-mm.c:9:
>    include/linux/mm.h: In function 'is_vmalloc_addr':
>    include/linux/mm.h:486:17: error: 'VMALLOC_START' undeclared (first use in this function)
>    include/linux/mm.h:486:17: note: each undeclared identifier is reported only once for each function it appears in
>    include/linux/mm.h:486:41: error: 'VMALLOC_END' undeclared (first use in this function)
>    include/linux/mm.h: In function 'maybe_mkwrite':
>    include/linux/mm.h:624:3: error: implicit declaration of function 'pte_mkwrite'
>    include/linux/mm.h:624:7: error: incompatible types when assigning to type 'pte_t' from type 'int'
>    In file included from include/linux/kmemleak.h:24:0,
>    from include/linux/slab.h:117,
>    from arch/tile/include/asm/pgtable.h:27,
>    from mm/init-mm.c:9:

It looks like some architectures don't really like including linux/mm.h
from linux/kmemleak.h. I'll change the patch to avoid this include and
explicitly declare high_memory in kmemleak.h

-- 
Catalin

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WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: kbuild test robot <lkp@intel.com>
Cc: kbuild-all@01.org, Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Vignesh R <vigneshr@ti.com>
Subject: Re: [PATCH] mm: kmemleak: Avoid using __va() on addresses that don't have a lowmem mapping
Date: Tue, 16 Aug 2016 18:31:44 +0100	[thread overview]
Message-ID: <20160816173143.GC7609@e104818-lin.cambridge.arm.com> (raw)
In-Reply-To: <201608170130.HGiTRP7J%fengguang.wu@intel.com>

On Wed, Aug 17, 2016 at 01:15:53AM +0800, kbuild test robot wrote:
> [auto build test ERROR on mmotm/master]
> [also build test ERROR on v4.8-rc2 next-20160816]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Catalin-Marinas/mm-kmemleak-Avoid-using-__va-on-addresses-that-don-t-have-a-lowmem-mapping/20160816-232733
> base:   git://git.cmpxchg.org/linux-mmotm.git master
> config: tile-tilegx_defconfig (attached as .config)
> compiler: tilegx-linux-gcc (GCC) 4.6.2
> reproduce:
>         wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=tile 
> 
> All error/warnings (new ones prefixed by >>):
> 
>    In file included from include/linux/kmemleak.h:24:0,
>    from include/linux/slab.h:117,
>    from arch/tile/include/asm/pgtable.h:27,
>    from mm/init-mm.c:9:
>    include/linux/mm.h: In function 'is_vmalloc_addr':
>    include/linux/mm.h:486:17: error: 'VMALLOC_START' undeclared (first use in this function)
>    include/linux/mm.h:486:17: note: each undeclared identifier is reported only once for each function it appears in
>    include/linux/mm.h:486:41: error: 'VMALLOC_END' undeclared (first use in this function)
>    include/linux/mm.h: In function 'maybe_mkwrite':
>    include/linux/mm.h:624:3: error: implicit declaration of function 'pte_mkwrite'
>    include/linux/mm.h:624:7: error: incompatible types when assigning to type 'pte_t' from type 'int'
>    In file included from include/linux/kmemleak.h:24:0,
>    from include/linux/slab.h:117,
>    from arch/tile/include/asm/pgtable.h:27,
>    from mm/init-mm.c:9:

It looks like some architectures don't really like including linux/mm.h
from linux/kmemleak.h. I'll change the patch to avoid this include and
explicitly declare high_memory in kmemleak.h

-- 
Catalin

  reply	other threads:[~2016-08-16 17:31 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-16 15:20 [PATCH] mm: kmemleak: Avoid using __va() on addresses that don't have a lowmem mapping Catalin Marinas
2016-08-16 15:20 ` Catalin Marinas
2016-08-16 17:15 ` kbuild test robot
2016-08-16 17:31   ` Catalin Marinas [this message]
2016-08-16 17:31     ` Catalin Marinas
2016-08-16 17:27 ` kbuild test robot
2016-08-16 17:34 ` Catalin Marinas
2016-08-16 17:34   ` Catalin Marinas
2016-08-16 17:39 ` kbuild test robot
2016-08-17 15:51 ` [mm] 122708b1b9: PANIC: early exception kernel test robot
2016-08-17 15:51   ` [lkp] " kernel test robot
2016-08-17 16:10   ` Catalin Marinas
2016-08-17 16:10     ` [lkp] " Catalin Marinas
2016-08-17 16:10     ` Catalin Marinas
2016-08-17 19:18     ` Andrew Morton
2016-08-17 19:18       ` [lkp] " Andrew Morton
2016-08-17 19:18       ` Andrew Morton
2016-08-17 20:36       ` Catalin Marinas
2016-08-17 20:36         ` [lkp] " Catalin Marinas
2016-08-17 20:36         ` Catalin Marinas

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