Re: [PATCH 02/11] RISC-V: Add section of GOT.PLT for kernel module

From: kbuild test robot
Date: Wed Mar 14 2018 - 13:34:58 EST


Hi Zong,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc5 next-20180314]
[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/Zong-Li/RISC-V-Resolve-the-issue-of-loadable-module-on-64-bit/20180314-203750
config: riscv-defconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 7.2.0
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
make.cross ARCH=riscv

All errors (new ones prefixed by >>):

In file included from include/linux/module.h:25:0,
from fs/notify/fsnotify.c:23:
arch/riscv/include/asm/module.h:38:25: warning: 'struct mod_section' declared inside parameter list will not be visible outside of this definition or declaration
const struct mod_section *sec)
^~~~~~~~~~~
arch/riscv/include/asm/module.h: In function 'get_got_entry':
arch/riscv/include/asm/module.h:40:49: error: dereferencing pointer to incomplete type 'const struct mod_section'
struct got_entry *got = (struct got_entry *)sec->shdr->sh_addr;
^~
arch/riscv/include/asm/module.h: At top level:
arch/riscv/include/asm/module.h:89:57: warning: 'struct mod_section' declared inside parameter list will not be visible outside of this definition or declaration
static inline int get_got_plt_idx(u64 val, const struct mod_section *sec)
^~~~~~~~~~~
arch/riscv/include/asm/module.h: In function 'get_got_plt_idx':
arch/riscv/include/asm/module.h:91:53: error: dereferencing pointer to incomplete type 'const struct mod_section'
struct got_entry *got_plt = (struct got_entry *)sec->shdr->sh_addr;
^~
arch/riscv/include/asm/module.h: At top level:
arch/riscv/include/asm/module.h:101:24: warning: 'struct mod_section' declared inside parameter list will not be visible outside of this definition or declaration
const struct mod_section *sec_plt,
^~~~~~~~~~~
arch/riscv/include/asm/module.h: In function 'get_plt_entry':
arch/riscv/include/asm/module.h:104:53: error: dereferencing pointer to incomplete type 'const struct mod_section'
struct plt_entry *plt = (struct plt_entry *)sec_plt->shdr->sh_addr;
^~
>> arch/riscv/include/asm/module.h:105:41: error: passing argument 2 of 'get_got_plt_idx' from incompatible pointer type [-Werror=incompatible-pointer-types]
int got_plt_idx = get_got_plt_idx(val, sec_got_plt);
^~~~~~~~~~~
arch/riscv/include/asm/module.h:89:19: note: expected 'const struct mod_section *' but argument is of type 'const struct mod_section *'
static inline int get_got_plt_idx(u64 val, const struct mod_section *sec)
^~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +/get_got_plt_idx +105 arch/riscv/include/asm/module.h

99
100 static inline struct plt_entry *get_plt_entry(u64 val,
> 101 const struct mod_section *sec_plt,
102 const struct mod_section *sec_got_plt)
103 {
104 struct plt_entry *plt = (struct plt_entry *)sec_plt->shdr->sh_addr;
> 105 int got_plt_idx = get_got_plt_idx(val, sec_got_plt);
106 if (got_plt_idx >= 0)
107 return plt + got_plt_idx;
108 else
109 return NULL;
110 }
111

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