kernel-hardening - Re: [PATCH v6 4/4] Kselftest for module text allocation benchmarking

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Date: Tue, 18 Sep 2018 08:27:09 +0800
From: kbuild test robot <lkp@...el.com>
To: Rick Edgecombe <rick.p.edgecombe@...el.com>
Cc: kbuild-all@...org, tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	x86@...nel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	kernel-hardening@...ts.openwall.com, daniel@...earbox.net,
	jannh@...gle.com, keescook@...omium.org,
	alexei.starovoitov@...il.com, kristen@...ux.intel.com,
	dave.hansen@...el.com, arjan@...ux.intel.com,
	Rick Edgecombe <rick.p.edgecombe@...el.com>
Subject: Re: [PATCH v6 4/4] Kselftest for module text allocation benchmarking

Hi Rick,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.19-rc4 next-20180913]
[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/Rick-Edgecombe/KASLR-feature-to-randomize-each-loadable-module/20180914-064826
config: microblaze-allyesconfig (attached as .config)
compiler: microblaze-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=microblaze 

All errors (new ones prefixed by >>):

   lib/test_mod_alloc.o: In function `device_file_write':
>> (.text+0x6b8): undefined reference to `__divdi3'
   (.text+0x724): undefined reference to `__divdi3'
   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   drivers/android/binder.o: In function `binder_thread_write':
   drivers/android/.tmp_gl_binder.o:(.text+0xd3c4): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xd3f0): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xd868): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xdfe8): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xe5c8): undefined reference to `__user_bad'

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