[rmk:for-next 3/7] arch/arm/mm/ioremap.c:130:32: error: call to undeclared function 'kasan_mem_to_shadow'; ISO C99 and later do not support implicit function declarations

[rmk:for-next 3/7] arch/arm/mm/ioremap.c:130:32: error: call to undeclared function 'kasan_mem_to_shadow'; ISO C99 and later do not support implicit function declarations

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux.git for-next
head:   315cfa0efa30b8f1c9b8d6b8b5cc9e6c337906ff
commit: 15c0b4cb0223a5cf9783e3759be115c1ca643368 [3/7] ARM: 9427/1: mm: Fix stack recursion caused by KASAN
config: arm-integrator_defconfig (https://download.01.org/0day-ci/archive/20241113/202411130711.xfVEiMKn-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241113/202411130711.xfVEiMKn-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411130711.xfVEiMKn-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/arm/mm/ioremap.c:26:
   In file included from include/linux/mm.h:2213:
   include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     518 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
>> arch/arm/mm/ioremap.c:130:32: error: call to undeclared function 'kasan_mem_to_shadow'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     130 |                 sync_pgds(mm, (unsigned long)kasan_mem_to_shadow(
         |                                              ^
   1 warning and 1 error generated.


vim +/kasan_mem_to_shadow +130 arch/arm/mm/ioremap.c

   125	
   126	static inline void sync_vmalloc_pgds(struct mm_struct *mm)
   127	{
   128		sync_pgds(mm, VMALLOC_START, VMALLOC_END);
   129		if (IS_ENABLED(CONFIG_KASAN_VMALLOC))
 > 130			sync_pgds(mm, (unsigned long)kasan_mem_to_shadow(
   131						(void *)VMALLOC_START),
   132				      (unsigned long)kasan_mem_to_shadow(
   133						(void *)VMALLOC_END));
   134	}
   135	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Re: [rmk:for-next 3/7] arch/arm/mm/ioremap.c:130:32: error: call to undeclared function 'kasan_mem_to_shadow'; ISO C99 and later do not support implicit function declarations

[Linus Walleij]

On Wed, Nov 13, 2024 at 12:11 AM kernel test robot <lkp@intel.com> wrote:

> >> arch/arm/mm/ioremap.c:130:32: error: call to undeclared function 'kasan_mem_to_shadow'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>      130 |                 sync_pgds(mm, (unsigned long)kasan_mem_to_shadow(
>          |                                              ^
>    1 warning and 1 error generated.

I mentioned this in a comment to 9429/1 that it supercedes 9427/1 since the
author didn't send a new version to solve this issue. Maybe I should have
mailed some more...

9429/1, 9430/1 and 9431/1 can be applied cleanly in its place.

Sorry for the mess. Tell me if you want me to re-send them!

Yours,
Linus Walleij

Re: [rmk:for-next 3/7] arch/arm/mm/ioremap.c:130:32: error: call to undeclared function 'kasan_mem_to_shadow'; ISO C99 and later do not support implicit function declarations

[Russell King (Oracle)]

On Wed, Nov 13, 2024 at 01:34:34AM +0100, Linus Walleij wrote:
> On Wed, Nov 13, 2024 at 12:11 AM kernel test robot <lkp@intel.com> wrote:
> 
> > >> arch/arm/mm/ioremap.c:130:32: error: call to undeclared function 'kasan_mem_to_shadow'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
> >      130 |                 sync_pgds(mm, (unsigned long)kasan_mem_to_shadow(
> >          |                                              ^
> >    1 warning and 1 error generated.
> 
> I mentioned this in a comment to 9429/1 that it supercedes 9427/1 since the
> author didn't send a new version to solve this issue. Maybe I should have
> mailed some more...

Sorry, missed that comment.

> 9429/1, 9430/1 and 9431/1 can be applied cleanly in its place.

I initially applied all of them, deciding that 9427/1 was a fix and
the other three were development. On merging the two branches, the
conflicts looked horrible, so I dropped the "development" stuff rather
than the apparent "fix" patch, clearly I should've looked closer and
done the opposite.

Now corrected, assuming tonight's build is clean, no further action
should be required.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!

Re: [rmk:for-next 3/7] arch/arm/mm/ioremap.c:130:32: error: call to undeclared function 'kasan_mem_to_shadow'; ISO C99 and later do not support implicit function declarations

[Linus Walleij]

On Wed, Nov 13, 2024 at 3:20 PM Russell King (Oracle)
<linux@armlinux.org.uk> wrote:

> Now corrected, assuming tonight's build is clean, no further action
> should be required.

Thanks Russell, much appreciated! Tested the linux-next
tree this morning and all seems fine.

Yours,
Linus Walleij