linux-kernel - Re: [syzbot] [mm?] BUG: corrupted list in add_to

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

Message-Id: <20241016143743.675996b564d269419c129d29@linux-foundation.org>
Date: Wed, 16 Oct 2024 14:37:43 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Aleksandr Nogikh <nogikh@...gle.com>
Cc: syzbot <syzbot+30eac43568e2b3d65728@...kaller.appspotmail.com>,
 linmiaohe@...wei.com, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
 syzkaller-bugs@...glegroups.com, vitaly.wool@...sulko.com
Subject: Re: [syzbot] [mm?] BUG: corrupted list in add_to_unbuddied

On Wed, 16 Oct 2024 08:19:25 +0200 Aleksandr Nogikh <nogikh@...gle.com> wrote:

> Hi Andrew,
> 
> On Wed, Oct 16, 2024 at 12:40 AM Andrew Morton
> <akpm@...ux-foundation.org> wrote:
> >
> > On Tue, 15 Oct 2024 07:52:25 -0700 syzbot <syzbot+30eac43568e2b3d65728@...kaller.appspotmail.com> wrote:
> >
> > > syzbot has found a reproducer for the following issue on:
> > >
> > > HEAD commit:    eca631b8fe80 Merge tag 'f2fs-6.12-rc4' of git://git.kernel..
> > > git tree:       upstream
> > > console output: https://syzkaller.appspot.com/x/log.txt?x=14d0845f980000
> > > kernel config:  https://syzkaller.appspot.com/x/.config?x=cfbd94c114a3d407
> > > dashboard link: https://syzkaller.appspot.com/bug?extid=30eac43568e2b3d65728
> > > 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=16df4c40580000
> >
> > Something seems rather wrong with the "syz repro" page.
> >
> >
> 
> What exactly looks wrong? :)

I click on the link
(https://syzkaller.appspot.com/x/repro.syz?x=16df4c40580000) and I get
the below garbage:

> >
> > # https://syzkaller.appspot.com/bug?id=6b5f76b3a3783e6b1876d25b2d7a981ac0e0131f
> > # See https://goo.gl/kgGztJ for information about syzkaller reproducers.
> > #{"threaded":true,"repeat":true,"procs":6,"slowdown":1,"sandbox":"none","sandbox_arg":0,"tun":true,"netdev":true,"resetnet":true,"cgroups":true,"binfmt_misc":true,"close_fds":true,"usb":true,"vhci":true,"wifi":true,"ieee802154":true,"sysctl":true,"swap":true,"tmpdir":true,"segv":true}
> > syz_mount_image$ntfs3(&(0x7f0000000000), &(0x7f0000000140)='./bus\x00', 0x19c6038, &(0x7f0000000180)=ANY=[], 0x1, 0x1f231, &(0x7f000003e780)="$eJzs3QmYTeUfB/D37Pu+XLvBWEO2RLLvsm+pZAvZyRalGhJRSSWpFElCQqhUEklEsi8JSZKQVEIS/2fu3JlmufOvadf7/TyPOfeee877nnu+94z5ne0ebz25edsGbRISEhKIzZAU50gGSSSJXIq9xsfGXYoNmdi/EZ3nV9ttftQreZxZcOVtoxYUXjVUa7/MfEsim+xOx09VOLwp3JT7+MW2vXoPSeg9JGHAwKEJXRO6DRw4tGu3fj0Suvce0rdsQst+PboO6ZHQe8CQHoMzvNyz38BBg0YmdB3Q3VAHDe4xZEhC1wEjE/r2GJkwdGDC0MEjE7re2rX3gISyZcsmGCqB36jd/H96CQAAAAAAAAAAAAAAAAAA4M9x6VLaoX0AAAAAAAAAAAAAAAAAAAC4TDVo3LR+OaKkPWcIQxoRhsxlCCH2L9OlXvfPZdNO8qRdoo9yRX82Sn10um/5fuf
> > <and a huge amount more>
> >