linux-kernel - Re: [PATCH] i3c: master: svc: fix cpu schedule in spin lock

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: <20230522103238.31e17e5d@xps-13>
Date:   Mon, 22 May 2023 10:32:38 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Clark Wang <xiaoning.wang@....com>
Cc:     conor.culhane@...vaco.com, alexandre.belloni@...tlin.com,
        linux-i3c@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i3c: master: svc: fix cpu schedule in spin lock

Hi Clark,

xiaoning.wang@....com wrote on Wed, 17 May 2023 11:30:29 +0800:

> pm_runtime_resume_and_get() may call sleep(). It cannot be used in
> svc_i3c_master_start_xfer_locked(), because it is in a spin lock.
> 
> Move the pm runtime operations to svc_i3c_master_enqueue_xfer().
> 
> Signed-off-by: Clark Wang <xiaoning.wang@....com>
> Fixes: 05be23ef78f7 ("i3c: master: svc: add runtime pm support")

Reviewed-by: Miquel Raynal <miquel.raynal@...tlin.com>

Thanks,
Miquèl