linux-kernel - Re: [PATCH v2 3/6] phy: core: Fix that API devm_phy

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZyDm7IMUBYkiHPyp@hovoldconsulting.com>
Date: Tue, 29 Oct 2024 14:45:16 +0100
From: Johan Hovold <johan@...nel.org>
To: Zijun Hu <zijun_hu@...oud.com>
Cc: Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Rob Herring <robh@...nel.org>, Arnd Bergmann <arnd@...db.de>,
	Lee Jones <lee@...nel.org>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	stable@...r.kernel.org, linux-phy@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Zijun Hu <quic_zijuhu@...cinc.com>
Subject: Re: [PATCH v2 3/6] phy: core: Fix that API devm_phy_destroy() fails
 to destroy the phy

On Thu, Oct 24, 2024 at 10:39:28PM +0800, Zijun Hu wrote:
> From: Zijun Hu <quic_zijuhu@...cinc.com>
> 
> For devm_phy_destroy(), its comment says it needs to invoke phy_destroy()
> to destroy the phy, but it does not invoke the function actually since
> devres_destroy() will not call devm_phy_consume() at all which will call
> the function, and the missing phy_destroy() call will case that the phy
> fails to be destroyed.

Here too, split in at least two sentences.
 
> Fixed by using devres_release() instead of devres_destroy() within the API.

And add a comment about there not being any in-tree users of the
interface.

And consider dropping it.

> Fixes: ff764963479a ("drivers: phy: add generic PHY framework")
> Cc: stable@...r.kernel.org
> Signed-off-by: Zijun Hu <quic_zijuhu@...cinc.com>

Johan