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: <Zyt9mf-6hNYWyNhJ@hovoldconsulting.com>
Date: Wed, 6 Nov 2024 15:30:49 +0100
From: Johan Hovold <johan@...nel.org>
To: Qiu-ji Chen <chenqiuji666@...il.com>
Cc: dtwlin@...il.com, elder@...nel.org, gregkh@...uxfoundation.org,
	greybus-dev@...ts.linaro.org, linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org, baijiaju1990@...il.com
Subject: Re: [PATCH v2] greybus/uart: Fix atomicity violation in
 get_serial_info()

On Wed, Nov 06, 2024 at 05:58:19PM +0800, Qiu-ji Chen wrote:
> Our static checker found a bug where set_serial_info() uses a mutex, but 
> get_serial_info() does not. Fortunately, the impact of this is relatively 
> minor. It doesn't cause a crash or any other serious issues. However, if a 
> race condition occurs between set_serial_info() and get_serial_info(), 
> there is a chance that the data returned by get_serial_info() will be 
> meaningless.
> 
> Signed-off-by: Qiu-ji Chen <chenqiuji666@...il.com>
> Fixes: 0aad5ad563c8 ("greybus/uart: switch to ->[sg]et_serial()")
> ---
> V2:
> Modified the patch description to make it more concise and easier to understand.
> Changed the fix code to ensure the logic is correct.
> Thanks to Johan Hovold and Dan Carpenter for helpful suggestion.

Much better, thanks.

But please try to use the same patch prefix as previous patches for the
driver you're modifying (e.g. by looking at git log --oneline for the
driver in question).

In this case it should have been:

	staging: greybus: uart: fix ...

so that it's clear where this patch should be applied.

Care to fix that up in a v3?

Reviewed-by: Johan Hovold <johan+linaro@...nel.org>

Johan

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ