linux-kernel - Re: [syzbot] [mm?] WARNING: bad unlock balance in move_pgt

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <68524978.050a0220.2608ac.002a.GAE@google.com>
Date: Tue, 17 Jun 2025 22:07:04 -0700
From: syzbot <syzbot+52343d77314d6c0447fe@...kaller.appspotmail.com>
To: Jason@...c4.com, Liam.Howlett@...cle.com, akpm@...ux-foundation.org, 
	david@...hat.com, harry.yoo@...cle.com, jannh@...gle.com, 
	liam.howlett@...cle.com, linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	lorenzo.stoakes@...cle.com, pfalcato@...e.de, riel@...riel.com, 
	syzkaller-bugs@...glegroups.com, vbabka@...e.cz
Subject: Re: [syzbot] [mm?] WARNING: bad unlock balance in move_pgt_entry

syzbot has bisected this issue to:

commit aaf5c23bf6a474f11f48f03bd6a9b551f4e7d45a
Author: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Date:   Mon Jun 9 13:26:35 2025 +0000

    mm/mremap: introduce more mergeable mremap via MREMAP_RELOCATE_ANON

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11f92370580000
start commit:   050f8ad7b58d Add linux-next specific files for 20250616
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=13f92370580000
console output: https://syzkaller.appspot.com/x/log.txt?x=15f92370580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d2efc7740224b93a
dashboard link: https://syzkaller.appspot.com/bug?extid=52343d77314d6c0447fe
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11389e82580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16824370580000

Reported-by: syzbot+52343d77314d6c0447fe@...kaller.appspotmail.com
Fixes: aaf5c23bf6a4 ("mm/mremap: introduce more mergeable mremap via MREMAP_RELOCATE_ANON")

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