[linux-next:master 13212/14131] arch/riscv/mm/ptdump.c:255:17: error: initialization of 'void (*)(struct ptdump_state *, long unsigned int, int, u64)' {aka 'void (*)(struct ptdump_state *, long unsigned int, int, long long unsigned int)'} from incompatible pointer type 'void (*)(struct ptdump_state *, long unsigned int, int, long unsigned int)'

* [linux-next:master 13212/14131] arch/riscv/mm/ptdump.c:255:17: error: initialization of 'void (*)(struct ptdump_state *, long unsigned int, int,  u64)' {aka 'void (*)(struct ptdump_state *, long unsigned int,  int, long long unsigned int)'} from incompatible pointer type 'void (*)(struct ptdump_state *, long unsigned int,  int,  long unsigned int)'
@ 2020-05-31 22:43 ` kbuild test robot
  0 siblings, 0 replies; 2+ messages in thread
From: kbuild test robot @ 2020-05-31 22:43 UTC (permalink / raw)
  To: Steven, Price,; +Cc: kbuild-all, Andrew Morton, Linux Memory Management List

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   e7b08814b16b80a0bf76eeca16317f8c2ed23b8c
commit: 8e1fbb89ffff1b66d68ad6f28b5dda689def97d9 [13212/14131] mm: ptdump: expand type of 'val' in note_page()
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 8e1fbb89ffff1b66d68ad6f28b5dda689def97d9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

arch/riscv/mm/ptdump.c: In function 'ptdump_walk':
>> arch/riscv/mm/ptdump.c:255:17: error: initialization of 'void (*)(struct ptdump_state *, long unsigned int,  int,  u64)' {aka 'void (*)(struct ptdump_state *, long unsigned int,  int,  long long unsigned int)'} from incompatible pointer type 'void (*)(struct ptdump_state *, long unsigned int,  int,  long unsigned int)' [-Werror=incompatible-pointer-types]
255 |    .note_page = note_page,
|                 ^~~~~~~~~
arch/riscv/mm/ptdump.c:255:17: note: (near initialization for 'st.ptdump.note_page')
arch/riscv/mm/ptdump.c: In function 'ptdump_check_wx':
arch/riscv/mm/ptdump.c:277:17: error: initialization of 'void (*)(struct ptdump_state *, long unsigned int,  int,  u64)' {aka 'void (*)(struct ptdump_state *, long unsigned int,  int,  long long unsigned int)'} from incompatible pointer type 'void (*)(struct ptdump_state *, long unsigned int,  int,  long unsigned int)' [-Werror=incompatible-pointer-types]
277 |    .note_page = note_page,
|                 ^~~~~~~~~
arch/riscv/mm/ptdump.c:277:17: note: (near initialization for 'st.ptdump.note_page')
cc1: some warnings being treated as errors

vim +255 arch/riscv/mm/ptdump.c

59c4da8640ccf4 Zong Li 2020-03-12  247  
59c4da8640ccf4 Zong Li 2020-03-12  248  static void ptdump_walk(struct seq_file *s)
59c4da8640ccf4 Zong Li 2020-03-12  249  {
59c4da8640ccf4 Zong Li 2020-03-12  250  	struct pg_state st = {
59c4da8640ccf4 Zong Li 2020-03-12  251  		.seq = s,
59c4da8640ccf4 Zong Li 2020-03-12  252  		.marker = address_markers,
59c4da8640ccf4 Zong Li 2020-03-12  253  		.level = -1,
59c4da8640ccf4 Zong Li 2020-03-12  254  		.ptdump = {
59c4da8640ccf4 Zong Li 2020-03-12 @255  			.note_page = note_page,
59c4da8640ccf4 Zong Li 2020-03-12  256  			.range = (struct ptdump_range[]) {
59c4da8640ccf4 Zong Li 2020-03-12  257  				{KERN_VIRT_START, ULONG_MAX},
59c4da8640ccf4 Zong Li 2020-03-12  258  				{0, 0}
59c4da8640ccf4 Zong Li 2020-03-12  259  			}
59c4da8640ccf4 Zong Li 2020-03-12  260  		}
59c4da8640ccf4 Zong Li 2020-03-12  261  	};
59c4da8640ccf4 Zong Li 2020-03-12  262  
59c4da8640ccf4 Zong Li 2020-03-12  263  	ptdump_walk_pgd(&st.ptdump, &init_mm, NULL);
59c4da8640ccf4 Zong Li 2020-03-12  264  }
59c4da8640ccf4 Zong Li 2020-03-12  265  

:::::: The code at line 255 was first introduced by commit
:::::: 59c4da8640ccf4721d54d36835706f3eefb521a4 riscv: Add support to dump the kernel page tables

:::::: TO: Zong Li <zong.li@sifive.com>
:::::: CC: Palmer Dabbelt <palmerdabbelt@google.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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