linux-kernel - Re: [syzbot] [hfs?] kernel BUG in hfs_write

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Message-ID: <aN8RBYdn6lxRz6Wl@Bertha>
Date: Fri, 3 Oct 2025 00:55:49 +0100
From: George Anthony Vernon <contact@...rnon.com>
To: syzbot <syzbot+97e301b4b82ae803d21b@...kaller.appspotmail.com>
Cc: damien.lemoal@...nsource.wdc.com, jlayton@...nel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com, willy@...radead.org
Subject: Re: [syzbot] [hfs?] kernel BUG in hfs_write_inode

On Thu, Oct 02, 2025 at 09:31:03AM -0700, syzbot wrote:
> Hello,
> 
> syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> kernel BUG in hfs_write_inode
> 
> ------------[ cut here ]------------
> kernel BUG at fs/hfs/inode.c:444!

Attaching a patch since I'm failing to reproduce locally on mainline.

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git v6.17

Thanks,

George

View attachment "0001-hfs-Validate-CNIDs-in-hfs_read_inode.patch" of type "text/plain" (2355 bytes)