Subject: Re: linux-next: build failure after merge of almost all the trees

From: Stephen Rothwell <[email-masked]>
Date: Thu, 28 Oct 2021 23:38:44 +1100

Hi all,

On Thu, 28 Oct 2021 21:26:51 +1100 Stephen Rothwell <[email-masked]> wrote:
>
> Today's linux-next build (powerpc allyesconfig) failed like this:
> 
> fs/ntfs/aops.c: In function 'ntfs_write_mst_block':
> fs/ntfs/aops.c:1311:1: error: the frame size of 2304 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]
>  1311 | }
>       | ^
> cc1: all warnings being treated as errors
> 
> I have no idea what has caused this.

With a nudge from Arnd, it seems the immediate case was commit

  f22969a66041 ("powerpc/64s: Default to 64K pages for 64 bit book3s")

from the powerpc tree switching the allyesconfig build from 4k pages to
64k pages which expanded a few arrays on the stack in that function.

-- 
Cheers,
Stephen Rothwell