linux-kernel - Re: [syzbot] [mm?] WARNING in __page_table_check_ptes

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Message-ID: <66fab69e.050a0220.6bad9.003d.GAE@google.com>
Date: Mon, 30 Sep 2024 07:33:02 -0700
From: syzbot <syzbot+0b56d6ed0d0c0c9a79dc@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, david@...hat.com, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, pasha.tatashin@...een.com, peterx@...hat.com, 
	syzkaller-bugs@...glegroups.com, usama.anjum@...labora.com
Subject: Re: [syzbot] [mm?] WARNING in __page_table_check_ptes_set (2)

syzbot has bisected this issue to:

commit a1b92a3f14984c96ace381f204b5d72c0805296e
Author: Muhammad Usama Anjum <usama.anjum@...labora.com>
Date:   Fri Feb 17 10:55:58 2023 +0000

    mm/userfaultfd: support WP on multiple VMAs

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15d9cea9980000
start commit:   3efc57369a0c Merge tag 'for-linus' of git://git.kernel.org..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17d9cea9980000
console output: https://syzkaller.appspot.com/x/log.txt?x=13d9cea9980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a4fcb065287cdb84
dashboard link: https://syzkaller.appspot.com/bug?extid=0b56d6ed0d0c0c9a79dc
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17a7de80580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16b67507980000

Reported-by: syzbot+0b56d6ed0d0c0c9a79dc@...kaller.appspotmail.com
Fixes: a1b92a3f1498 ("mm/userfaultfd: support WP on multiple VMAs")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection