在 2021年01月19日 17:43, [email protected] 写道:
> Date: Tue, 19 Jan 2021 09:42:54 +0000
> From: HAGIO KAZUHITO(?????)   <[email protected]>
> To: "[email protected]" <[email protected]>
> Subject: [Crash-utility] [PATCH] Fix "kmem -v" option on Linux
>       5.11-rc1 and    later kernels
> Message-ID:
>       
> <osbpr01mb19911991a7f295330cbc0ac5dd...@osbpr01mb1991.jpnprd01.prod.outlook.com>
>       
> Content-Type: text/plain; charset="iso-2022-jp"
> 
> Fix the "kmem -v" option on Linux 5.11-rc1 and later kernels
> that contains commit 96e2db456135db0cf2476b6890f1e8b2fdcf21eb
> ("mm/vmalloc: rework the drain logic").  Without the patch,
> the option will display nothing or fail with the error message
> "kmem: invalid kernel virtual address: <address>  type: "vmlist addr".
> 
> Signed-off-by: Kazuhito Hagio <[email protected]>
> ---
>  memory.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/memory.c b/memory.c
> index 0848097eb4f5..33b0ca7af977 100644
> --- a/memory.c
> +++ b/memory.c
> @@ -403,8 +403,6 @@ vm_init(void)
>           VALID_MEMBER(vmap_area_va_end) &&
>           VALID_MEMBER(vmap_area_list) &&
>           VALID_MEMBER(vmap_area_vm) &&
> -         (VALID_MEMBER(vmap_area_flags) || 
> -             (OFFSET(vmap_area_vm) == MEMBER_OFFSET("vmap_area", 
> "purge_list"))) &&
>           kernel_symbol_exists("vmap_area_list"))
>               vt->flags |= USE_VMAP_AREA;

Also looks good. Acked-by: Lianbo Jiang <[email protected]>

>  
> -- 2.18.4

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