Re: [PATCHv3 3/6] x86/arch_prctl/vdso: add ARCH_MAP_VDSO_*

From: Dmitry Safonov
Date: Mon Aug 29 2016 - 07:46:47 EST

On 08/27/2016 09:09 PM, kbuild test robot wrote:
Hi Dmitry,

[auto build test ERROR on v4.8-rc3]
[also build test ERROR on next-20160825]
[cannot apply to tip/x86/core tip/x86/vdso linux/master]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check for more information]

config: x86_64-randconfig-v0-08280034 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

arch/x86/built-in.o: In function `do_arch_prctl':
(.text+0x29865): undefined reference to `vdso_image_32'
arch/x86/built-in.o: In function `do_arch_prctl':
(.text+0x29877): undefined reference to `vdso_image_32'

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation

Right, that
+#if defined CONFIG_X86_32 || defined CONFIG_COMPAT
+ case ARCH_MAP_VDSO_32:
+ return prctl_map_vdso(&vdso_image_32, addr);

should be:
#if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
// ...

will resend with this fixup.