Date: Thu, 17 Nov 2016 21:53:31 +1100 From: Michael Ellerman <mpe@...erman.id.au> To: keescook@...omium.org Cc: kernel-hardening@...ts.openwall.com, linux-kernel@...r.kernel.org Subject: Re: Re: [PATCH] lkdtm: Add tests for LIST_POISON and ZERO_SIZE_PTR kbuild test robot <lkp@...el.com> writes: > [auto build test ERROR on char-misc/char-misc-testing] > [also build test ERROR on v4.9-rc5] > [cannot apply to next-20161115] > [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/Michael-Ellerman/lkdtm-Add-tests-for-LIST_POISON-and-ZERO_SIZE_PTR/20161115-235441 > config: i386-randconfig-i0-201646 (attached as .config) > compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4 > reproduce: > # save the attached .config to linux build tree > make ARCH=i386 > > All errors (new ones prefixed by >>): > >>> ERROR: "mmap_min_addr" [drivers/misc/lkdtm.ko] undefined! I couldn't see what was causing this, but of course it's just that mmap_min_addr is not exported, and in that config LKDTM is a module. I always build it in which is why I didn't notice. I'm not sure we want to EXPORT_SYMBOL mmap_min_addr just for this test do we? I could change the test to use mmap_min_addr if LKDTM is built-in, and otherwise just map at zero. Dunno. cheers
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