Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()

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To: Viacheslav Dubeyko <Slava.Dubeyko@xxxxxxx>, "willy@xxxxxxxxxxxxx" <willy@xxxxxxxxxxxxx>
Subject: Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Date: Tue, 29 Jul 2025 06:38:29 +0900
Cc: "glaubitz@xxxxxxxxxxxxxxxxxxx" <glaubitz@xxxxxxxxxxxxxxxxxxx>, "frank.li@xxxxxxxx" <frank.li@xxxxxxxx>, "slava@xxxxxxxxxxx" <slava@xxxxxxxxxxx>, "linux-fsdevel@xxxxxxxxxxxxxxx" <linux-fsdevel@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "akpm@xxxxxxxxxxxxxxxxxxxx" <akpm@xxxxxxxxxxxxxxxxxxxx>
In-reply-to: <12de16685af71b513f8027a8bfd14bc0322eb043.camel@ibm.com>
User-agent: Mozilla Thunderbird

On 2025/07/29 4:37, Viacheslav Dubeyko wrote:
> I don't see the point of making modifications here. The modification of
> hfs_read_inode() should be enough.

Sigh... Did you try
https://lkml.kernel.org/r/a8f8da77-f099-499b-98e0-39ed159b6a2d@xxxxxxxxxxxxxxxxxxx ?

I'm repeating that the modification of hfs_read_inode() does not fix
the bug syzbot is reporting.

Follow-Ups:
- [PATCH v4] hfs: update sanity check of the root record
  - From: Tetsuo Handa

References:
- Re: [PATCH v2] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Viacheslav Dubeyko
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Matthew Wilcox
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Tetsuo Handa
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Matthew Wilcox
- RE: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Viacheslav Dubeyko
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Tetsuo Handa
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Tetsuo Handa
- RE: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Viacheslav Dubeyko
- RE: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Viacheslav Dubeyko
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Tetsuo Handa
- RE: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Viacheslav Dubeyko
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Tetsuo Handa
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Tetsuo Handa
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Tetsuo Handa
- RE: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Viacheslav Dubeyko
- Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Tetsuo Handa
- RE: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode()
  - From: Viacheslav Dubeyko

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