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From: Greg KH <gregkh@linuxfoundation.org>
To: Shuangpeng Bai <shuangpeng.kernel@gmail.com>
Cc: heikki.krogerus@linux.intel.com, linux-usb@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [BUG] KASAN: slab-out-of-bounds in select_usb_power_delivery_show
Date: Sun, 14 Jun 2026 18:37:19 +0200	[thread overview]
Message-ID: <2026061444-flattered-rewrap-3d96@gregkh> (raw)
In-Reply-To: <178144969600.60470.6584137935143789620@gmail.com>

On Sun, Jun 14, 2026 at 11:22:45AM -0400, Shuangpeng Bai wrote:
> Hi Kernel Maintainers,
> 
> I hit the following report while testing current upstream kernel:
> 
> KASAN: slab-out-of-bounds in select_usb_power_delivery_show
> 
> on commit: e8c2f9fdadee7cbc75134dc463c1e0d856d6e5c7 (May 25 2026)

What about the latest tree?

> 
> The reproducer and .config files are here.
> https://gist.github.com/shuangpengbai/79c08ada299b3ae37b7a0af292ca413f
> 
> I'm happy to test debug patches or provide additional information.
> 
> Reported-by: Shuangpeng Bai <shuangpeng.kernel@gmail.com>
> 
> [  102.318332] BUG: KASAN: slab-out-of-bounds in select_usb_power_delivery_show (drivers/usb/typec/class.c:1642)
> [  102.319225] Read of size 8 at addr ffff888117d2f2c0 by task cat/8378
> [  102.319943] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014

Does this happen on real hardware, or just on emulated hardware?

thanks,

greg k-h

  reply	other threads:[~2026-06-14 16:38 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-14 15:22 [BUG] KASAN: slab-out-of-bounds in select_usb_power_delivery_show Shuangpeng Bai
2026-06-14 16:37 ` Greg KH [this message]
2026-06-14 17:28   ` Shuangpeng
2026-06-14 17:32     ` Greg KH
2026-06-14 19:11       ` Shuangpeng

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