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

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Message-ID: <ggit5gyjshv2cha4yicgwms64dfpb7jvohei2xfjivws7ittbk@maulvw742inf>
Date: Fri, 10 Jan 2025 16:03:04 -0500
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
To: syzbot <syzbot+c0673e1f1f054fac28c2@...kaller.appspotmail.com>
Cc: akpm@...ux-foundation.org, david@...hat.com, hdanton@...a.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        syzkaller-bugs@...glegroups.com, willy@...radead.org
Subject: Re: [syzbot] [mm?] WARNING in __folio_rmap_sanity_checks (2)

* syzbot <syzbot+c0673e1f1f054fac28c2@...kaller.appspotmail.com> [241228 07:25]:
> syzbot has found a reproducer for the following issue on:
> 
> HEAD commit:    8155b4ef3466 Add linux-next specific files for 20241220
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=1661050f980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9c90bb7161a56c88
> dashboard link: https://syzkaller.appspot.com/bug?extid=c0673e1f1f054fac28c2
> 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=17438af8580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=101006df980000
> 
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/98a974fc662d/disk-8155b4ef.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/2dea9b72f624/vmlinux-8155b4ef.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/593a42b9eb34/bzImage-8155b4ef.xz
> mounted in repro: https://storage.googleapis.com/syzbot-assets/5f780361c9ef/mount_0.gz
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+c0673e1f1f054fac28c2@...kaller.appspotmail.com
> 

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm mm-unstable