[PATCH 1/2] arm64: efi: Fix NULL pointer dereference by initializing user_ns

[Rik van Riel]

On Tue, 2025-12-23 at 02:55 -0800, Breno Leitao wrote:
> 
> diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
> index a9070d00b833..55452e61af31 100644
> --- a/drivers/firmware/efi/efi.c
> +++ b/drivers/firmware/efi/efi.c
> @@ -73,6 +73,7 @@ struct mm_struct efi_mm = {
>  	MMAP_LOCK_INITIALIZER(efi_mm)
>  	.page_table_lock	=
> __SPIN_LOCK_UNLOCKED(efi_mm.page_table_lock),
>  	.mmlist			=
> LIST_HEAD_INIT(efi_mm.mmlist),
> +	.user_ns		= &init_user_ns,
>  	.cpu_bitmap		= { [BITS_TO_LONGS(NR_CPUS)] = 0},
>  #ifdef CONFIG_SCHED_MM_CID
>  	.mm_cid.lock		=
> __RAW_SPIN_LOCK_UNLOCKED(efi_mm.mm_cid.lock),

Seems legit?

Acked-by: Rik van Riel <riel at surriel.com>

-- 
All Rights Reversed.