linux-kernel - Re: [syzbot] [mm?] KCSAN: data-race in mprotect_fixup / try_to_migrate

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: <CAG48ez0DYnDKikFUrPQOppsW_-aa2_hcoyOcRJeCMRrEm6GVTA@mail.gmail.com>
Date: Wed, 5 Feb 2025 16:14:03 +0100
From: Jann Horn <jannh@...gle.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, syzkaller <syzkaller@...glegroups.com>
Cc: syzbot <syzbot+c2e5712cbb14c95d4847@...kaller.appspotmail.com>, 
	Liam.Howlett@...cle.com, akpm@...ux-foundation.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	syzkaller-bugs@...glegroups.com, vbabka@...e.cz
Subject: Re: [syzbot] [mm?] KCSAN: data-race in mprotect_fixup / try_to_migrate_one

On Wed, Feb 5, 2025 at 4:07 PM Lorenzo Stoakes
<lorenzo.stoakes@...cle.com> wrote:
> On Wed, Feb 05, 2025 at 03:41:20AM -0800, syzbot wrote:
> > read to 0xffff888114b41700 of 8 bytes by task 6418 on cpu 0:
> >  try_to_migrate_one+0xb5a/0x12e0 mm/rmap.c:2321
>
> Be super nice if these reports could show the line of code!
>
> It's:
>
>                 if (vma->vm_flags & VM_LOCKED)

fwiw if you follow the "dashboard link" in the bug report, you'll get
a version of this where the source locations are clickable links to
git.kernel.org at the right commit.

Also note the "syzbot engineers can be reached at
syzkaller@...glegroups.com" at the bottom of the message.