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Date: Fri, 7 Apr 2017 01:41:26 +0800
From: kbuild test robot <>
To: Eddie Kovsky <>
Subject: Re: [PATCH v5 2/2] extable: verify address is read-only

Hi Eddie,

[auto build test ERROR on next-20170330]
[cannot apply to linus/master linux/master jeyu/modules-next v4.9-rc8 v4.9-rc7 v4.9-rc6 v4.11-rc5]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

config: i386-randconfig-x010-201714 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   kernel/extable.c: In function 'core_kernel_rodata':
>> kernel/extable.c:169:29: error: '__start_ro_after_init' undeclared (first use in this function)
     if (addr >= (unsigned long)__start_ro_after_init &&
   kernel/extable.c:169:29: note: each undeclared identifier is reported only once for each function it appears in
>> kernel/extable.c:170:28: error: '__end_ro_after_init' undeclared (first use in this function)
         addr < (unsigned long)__end_ro_after_init)

vim +/__start_ro_after_init +169 kernel/extable.c

   163	int core_kernel_rodata(unsigned long addr)
   164	{
   165		if (addr >= (unsigned long)__start_rodata &&
   166		    addr < (unsigned long)__end_rodata)
   167			return 1;
 > 169		if (addr >= (unsigned long)__start_ro_after_init &&
 > 170		    addr < (unsigned long)__end_ro_after_init)
   171			return 1;
   173		return 0;

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

Download attachment ".config.gz" of type "application/gzip" (27264 bytes)

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