From: Jesper Dangaard Brouer <brouer@redhat.com>
To: kbuild test robot <fengguang.wu@intel.com>
Cc: kbuild-all@01.org, linux-kernel@vger.kernel.org,
Alexander Duyck <alexander.h.duyck@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>,
brouer@redhat.com
Subject: Re: mm/slub.o:undefined reference to `_GLOBAL_OFFSET_TABLE_'
Date: Thu, 22 Sep 2016 10:29:46 +0200 [thread overview]
Message-ID: <20160922102946.4712077b@redhat.com> (raw)
In-Reply-To: <201609221308.sGPlsAWm%fengguang.wu@intel.com>
On Thu, 22 Sep 2016 13:50:21 +0800
kbuild test robot <fengguang.wu@intel.com> wrote:
> Hi Jesper,
>
> FYI, the error/warning still remains.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 7d1e042314619115153a0f6f06e4552c09a50e13
> commit: d0ecd894e3d5f768a84403b34019c4a7daa05882 slub: optimize bulk slowpath free by detached freelist
> date: 10 months ago
> config: microblaze-allnoconfig (attached as .config)
> compiler: microblaze-linux-gcc (GCC) 6.2.0
> 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
> git checkout d0ecd894e3d5f768a84403b34019c4a7daa05882
> # save the attached .config to linux build tree
> make.cross ARCH=microblaze
>
> All errors (new ones prefixed by >>):
>
> mm/built-in.o: In function `__slab_free.isra.14':
> >> mm/slub.o:(.text+0x28d1c): undefined reference to `_GLOBAL_OFFSET_TABLE_'
> scripts/link-vmlinux.sh: line 52: 18051 Segmentation fault ${LD} ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2} -T ${lds} ${KBUILD_VMLINUX_INIT} --start-group ${KBUILD_VMLINUX_MAIN} --end-group ${1}
Hi Fengguang,
I don't really understand if this is a real bug that I need to fix?
It looks like a linker problem, resulting in a "Segmentation fault" for your script...
The mentioned commit: d0ecd894e3d5f768a84 removes a call point to
__slab_free() and instead call slab_free(). It does not make sense to
my, why this results in a linker error on this ARCH=microblaze.
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
Author of http://www.iptv-analyzer.org
LinkedIn: http://www.linkedin.com/in/brouer
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next prev parent reply other threads:[~2016-09-22 8:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-22 5:50 mm/slub.o:undefined reference to `_GLOBAL_OFFSET_TABLE_' kbuild test robot
2016-09-22 8:29 ` Jesper Dangaard Brouer [this message]
2016-09-22 14:43 ` [kbuild-all] " Fengguang Wu
-- strict thread matches above, loose matches on Subject: below --
2016-09-16 21:40 kbuild test robot
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