linux-kernel - Re: [syzbot] [mm?] kernel BUG in page_table_check

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Message-Id: <20240926134712.e99b7e7068ecc45f7cd00f16@linux-foundation.org>
Date: Thu, 26 Sep 2024 13:47:12 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: syzbot <syzbot+645f216781b26a92a732@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
 pasha.tatashin@...een.com, syzkaller-bugs@...glegroups.com, Peter Xu
 <peterx@...hat.com>
Subject: Re: [syzbot] [mm?] kernel BUG in page_table_check_clear (2)

On Wed, 25 Sep 2024 22:30:27 -0700 syzbot <syzbot+645f216781b26a92a732@...kaller.appspotmail.com> wrote:

> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    1ec6d097897a Merge tag 's390-6.12-1' of git://git.kernel.o..

Thanks.

> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=173cdca9980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=6265dd30e362bb47
> dashboard link: https://syzkaller.appspot.com/bug?extid=645f216781b26a92a732
> compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12fcb080580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17b76c27980000

Seems to be memfd-related.

Will the bot be performing a bisection search?

>
> ...
>