linux-kernel - Re: [PATCHv5 2/3] x86/vdso: add mremap hook to vm_special

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Message-ID: <201604240758.CQ72Wdkb%fengguang.wu@intel.com>
Date:	Sun, 24 Apr 2016 07:09:56 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Dmitry Safonov <dsafonov@...tuozzo.com>
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	luto@...capital.net, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, x86@...nel.org, akpm@...ux-foundation.org,
	linux-mm@...ck.org, 0x7f454c46@...il.com,
	Dmitry Safonov <dsafonov@...tuozzo.com>
Subject: Re: [PATCHv5 2/3] x86/vdso: add mremap hook to vm_special_mapping

Hi,

[auto build test ERROR on v4.6-rc4]
[cannot apply to tip/x86/core tip/x86/vdso next-20160422]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Dmitry-Safonov/x86-rename-is_-ia32-x32-_task-to-in_-ia32-x32-_syscall/20160418-214656
config: x86_64-randconfig-s0-04240623 (attached as .config)
compiler: gcc-5 (Debian 5.3.1-14) 5.3.1 20160409
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: the linux-review/Dmitry-Safonov/x86-rename-is_-ia32-x32-_task-to-in_-ia32-x32-_syscall/20160418-214656 HEAD aed83f1dd951908724a5ba564e2b03d68a9fc7b8 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   arch/x86/entry/vdso/vma.c: In function 'vdso_mremap':
>> arch/x86/entry/vdso/vma.c:114:37: error: 'vdso_image_32' undeclared (first use in this function)
     if (in_ia32_syscall() && image == &vdso_image_32) {
                                        ^
   arch/x86/entry/vdso/vma.c:114:37: note: each undeclared identifier is reported only once for each function it appears in

vim +/vdso_image_32 +114 arch/x86/entry/vdso/vma.c

   108		if (image->size != new_size)
   109			return -EINVAL;
   110	
   111		if (current->mm != new_vma->vm_mm)
   112			return -EFAULT;
   113	
 > 114		if (in_ia32_syscall() && image == &vdso_image_32) {
   115			struct pt_regs *regs = current_pt_regs();
   116			unsigned long vdso_land = image->sym_int80_landing_pad;
   117			unsigned long old_land_addr = vdso_land +

---
0-DAY kernel test infrastructure                Open Source Technology Center
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Download attachment ".config.gz" of type "application/octet-stream" (27095 bytes)