linux-kernel - Re: KASAN: use-after-free Read in poly1305_update

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Message-ID: <CAHOo4gKENirYHJ40sU3LBQv9MPic9umz3+g8DcTGzX+LEn7Uog@mail.gmail.com>
Date: Tue, 25 Mar 2025 09:33:03 +0800
From: Hui Guo <guohui.study@...il.com>
To: Kent Overstreet <kent.overstreet@...ux.dev>
Cc: Eric Biggers <ebiggers@...nel.org>, linux-bcachefs@...r.kernel.org, 
	Herbert Xu <herbert@...dor.apana.org.au>, "David S. Miller" <davem@...emloft.net>, 
	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"H. Peter Anvin" <hpa@...or.com>, linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Read in poly1305_update_arch

https://raw.githubusercontent.com/androidAppGuard/KernelBugs/refs/heads/main/586de92313fcab8ed84ac5f78f4d2aae2db92c59/my.config
you can try this config to build the kernel image. I reproduce this
issue in 586de92313fcab8ed84ac5f78f4d2aae2db92c59 (kernel commit) by
the above my.config.

Kent Overstreet <kent.overstreet@...ux.dev> 于2025年3月25日周二 02:06写道：

>
> On Mon, Mar 24, 2025 at 05:00:46PM +0000, Eric Biggers wrote:
> > This is a bcachefs issue.
> >
> > +linux-bcachefs@...r.kernel.org
> >
> > In the future, when fuzzing a filesystem please direct any bugs found directly
> > to the mailing list for the corresponding filesystem.
>
> This is also one I've been unable to reproduce, so if anyone knows what
> does it (kernel config opts?) so I can repro it in ktest - please let me
> know