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

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Message-ID: <689c1db2.a70a0220.7865.0047.GAE@google.com>
Date: Tue, 12 Aug 2025 22:08:02 -0700
From: syzbot <syzbot+4d9a13f0797c46a29e42@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, jannh@...gle.com, liam.howlett@...cle.com, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, lorenzo.stoakes@...cle.com, 
	pfalcato@...e.de, syzkaller-bugs@...glegroups.com, vbabka@...e.cz
Subject: Re: [syzbot] [mm?] WARNING in move_page_tables

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+4d9a13f0797c46a29e42@...kaller.appspotmail.com
Tested-by: syzbot+4d9a13f0797c46a29e42@...kaller.appspotmail.com

Tested on:

commit:         0db9b72d mm/userfaultfd: fix kmap_local LIFO ordering ..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-hotfixes-unstable
console output: https://syzkaller.appspot.com/x/log.txt?x=128fb5a2580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2323b2d6038203a5
dashboard link: https://syzkaller.appspot.com/bug?extid=4d9a13f0797c46a29e42
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.