linux-kernel - Re: [PATCH v6 1/2] rpmsg: char: Fix race between the release of rpmsg

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Date:   Mon, 17 Jan 2022 16:46:59 -0600
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Matthias Kaehlcke <mka@...omium.org>,
        Andy Gross <agross@...nel.org>,
        Ohad Ben-Cohen <ohad@...ery.com>
Cc:     Sujit Kautkar <sujitka@...omium.org>, linux-kernel@...r.kernel.org,
        Stephen Boyd <swboyd@...omium.org>,
        linux-remoteproc@...r.kernel.org,
        Sibi Sankar <sibis@...eaurora.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
Subject: Re: [PATCH v6 1/2] rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev

On Mon, 10 Jan 2022 10:47:36 -0800, Matthias Kaehlcke wrote:
> From: Sujit Kautkar <sujitka@...omium.org>
> 
> struct rpmsg_ctrldev contains a struct cdev. The current code frees
> the rpmsg_ctrldev struct in rpmsg_ctrldev_release_device(), but the
> cdev is a managed object, therefore its release is not predictable
> and the rpmsg_ctrldev could be freed before the cdev is entirely
> released, as in the backtrace below.
> 
> [...]

Applied, thanks!

[1/2] rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev
      commit: b7fb2dad571d1e21173c06cef0bced77b323990a
[2/2] rpmsg: char: Fix race between the release of rpmsg_eptdev and cdev
      commit: 7a534ae89e34e9b51acb5a63dd0f88308178b46a

Best regards,
-- 
Bjorn Andersson <bjorn.andersson@...aro.org>