Re: [syzbot] [hfs?] WARNING in hfs_write_inode

[Arnd Bergmann]

On Wed, Jan 4, 2023, at 15:24, syzbot wrote:

> The issue was bisected to:
>
> commit 55d1cbbbb29e6656c662ee8f73ba1fc4777532eb
> Author: Arnd Bergmann <arnd@xxxxxxxx>
> Date:   Tue Nov 9 02:35:04 2021 +0000
>
>     hfs/hfsplus: use WARN_ON for sanity check
>

My patch was a mechanical conversion from '/* panic? */'
to 'WARN_ON()' to work around a compiler warning,
and the previous code had been in there since the
2004 HFS rewrite by Roman Zippel.

I know nothing about what this function actually does,
so my best answer is that we could revert my patch
and use pr_debug() instead of WARN_ON() for all of these.

    Arnd