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

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Message-ID: <rs7ocmzcqkwf3ac6spqvign6rov2ecqef3bu2dzeg6y6ryvv7x@4c47km4r5iqb>
Date: Mon, 24 Mar 2025 14:06:23 -0400
From: Kent Overstreet <kent.overstreet@...ux.dev>
To: Eric Biggers <ebiggers@...nel.org>
Cc: Hui Guo <guohui.study@...il.com>, 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

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