Thanks, applied the patch and built the kernel with gcc-12 and successfully booted the new kernel.
Regards,
Arthur.
On 20 November 2021 1:17:25 am ACDT, Song Xiongwei <sxwjean@xxxxxx> wrote:
>Hi,
>
>On 2021/11/19 下午7:00, Arthur Marsh wrote:
>> Hi, when seeing what build issues there were in building the current Linux git head kernel using gcc-12, I came across:
>>
>> CC mm/page_alloc.o
>> mm/page_alloc.c: In function ‘mem_init_print_info’:
>> mm/page_alloc.c:8173:27: error: comparison between two arrays [-Werror=array-compare]
>> 8173 | if (start <= pos && pos < end && size > adj) \
>> | ^~
>>
>> Are there any patches that address this?
>
>Please give a try with the patch below:
>
> From ca5ce459a256a4847fff96778e78ce1711e9e74b Mon Sep 17 00:00:00 2001
>From: Xiongwei Song <sxwjean@xxxxxxxxx>
>Date: Fri, 19 Nov 2021 22:19:59 +0800
>Subject: [PATCH] mm: page_alloc: Fix building error on
>-Werror=array-compare
>
>CC mm/page_alloc.o
>mm/page_alloc.c: In function ‘mem_init_print_info’:
>mm/page_alloc.c:8173:27: error: comparison between two arrays
>[-Werror=array-compare]
> 8173 | if (start <= pos && pos < end && size > adj) \
> |
>
>Reported-by: Arthur Marsh <arthur.marsh@xxxxxxxxxxxxxxxx>
>Signed-off-by: Xiongwei Song <sxwjean@xxxxxxxxx>
>---
> mm/page_alloc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/mm/page_alloc.c b/mm/page_alloc.c
>index c5952749ad40..8f304c3d0e19 100644
>--- a/mm/page_alloc.c
>+++ b/mm/page_alloc.c
>@@ -8170,7 +8170,7 @@ void __init mem_init_print_info(void)
> */
> #define adj_init_size(start, end, size, pos, adj) \
> do { \
>- if (start <= pos && pos < end && size > adj) \
>+ if (&start[0] <= &pos[0] && &pos[0] < &end[0] && size > adj) \
> size -= adj; \
> } while (0)
>
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
