From: Greg KH <greg@kroah.com>
To: Siddharth Gupta <sidgup@codeaurora.org>
Cc: bjorn.andersson@linaro.org, ohad@wizery.com,
linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, psodagud@codeaurora.org,
stable@vger.kernel.org
Subject: Re: [PATCH v4 4/4] remoteproc: core: Cleanup device in case of failure
Date: Wed, 16 Jun 2021 07:56:58 +0200 [thread overview]
Message-ID: <YMmSqtZ9OGIWs+dW@kroah.com> (raw)
In-Reply-To: <75ce2563-3d34-a578-200d-8ec5f259d405@codeaurora.org>
On Tue, Jun 15, 2021 at 01:21:11PM -0700, Siddharth Gupta wrote:
>
> On 6/15/2021 12:06 PM, Greg KH wrote:
> > On Tue, Jun 15, 2021 at 12:03:44PM -0700, Siddharth Gupta wrote:
> > > When a failure occurs in rproc_add() it returns an error, but does
> > > not cleanup after itself. This change adds the failure path in such
> > > cases.
> > >
> > > Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
> > > Cc: stable@vger.kernel.org
> > > ---
> > > drivers/remoteproc/remoteproc_core.c | 15 ++++++++++++---
> > > 1 file changed, 12 insertions(+), 3 deletions(-)
> > Why is this needed for stable kernels? And again, a Fixes: tag?
> Patch 2 and patch 3 are leading up to fix rproc_add()
> in case of a failure. This means we'll have errors with
> use after free unless we call device_del() or cdev_del(),
> also the sysfs and devtempfs nodes will also not be
> removed.
Then please explain that better in the changelogs. At it is, no one
knows this.
greg k-h
next prev parent reply other threads:[~2021-06-16 5:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-15 19:03 [PATCH v4 0/4] remoteproc: core: Fixes for rproc cdev and add Siddharth Gupta
2021-06-15 19:03 ` [PATCH v4 1/4] remoteproc: core: Move cdev add before device add Siddharth Gupta
2021-06-15 19:03 ` [PATCH v4 2/4] remoteproc: core: Move validate " Siddharth Gupta
2021-06-15 19:06 ` Greg KH
2021-06-15 19:03 ` [PATCH v4 3/4] remoteproc: core: Fix cdev remove and rproc del Siddharth Gupta
2021-06-15 19:06 ` Greg KH
2021-06-15 19:03 ` [PATCH v4 4/4] remoteproc: core: Cleanup device in case of failure Siddharth Gupta
2021-06-15 19:06 ` Greg KH
2021-06-15 20:21 ` Siddharth Gupta
2021-06-16 5:56 ` Greg KH [this message]
2021-06-23 21:50 ` [PATCH v4 0/4] remoteproc: core: Fixes for rproc cdev and add patchwork-bot+linux-remoteproc
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