linux-kernel - Re: [PATCH 004/190] Revert "media: exynos4-is: Fix several reference count leaks due to pm_runtime_get

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Message-ID: <00de22ab-e482-84a2-046f-3fe65707e817@canonical.com>
Date:   Fri, 23 Apr 2021 09:03:09 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     Qiushi Wu <wu000273@....edu>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Subject: Re: [PATCH 004/190] Revert "media: exynos4-is: Fix several reference
 count leaks due to pm_runtime_get_sync"

On 21/04/2021 14:57, Greg Kroah-Hartman wrote:
> This reverts commit 7ef64ceea0008c17e94a8a2c60c5d6d46f481996.
> 
> Commits from @umn.edu addresses have been found to be submitted in "bad
> faith" to try to test the kernel community's ability to review "known
> malicious" changes.  The result of these submissions can be found in a
> paper published at the 42nd IEEE Symposium on Security and Privacy
> entitled, "Open Source Insecurity: Stealthily Introducing
> Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
> of Minnesota) and Kangjie Lu (University of Minnesota).
> 
> Because of this, all submissions from this group must be reverted from
> the kernel tree and will need to be re-reviewed again to determine if
> they actually are a valid fix.  Until that work is complete, remove this
> change to ensure that no problems are being introduced into the
> codebase.
> 
> Cc: Qiushi Wu <wu000273@....edu>
> Cc: Hans Verkuil <hverkuil-cisco@...all.nl>
> Cc: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  drivers/media/platform/exynos4-is/fimc-isp.c  | 4 +---
>  drivers/media/platform/exynos4-is/fimc-lite.c | 2 +-
>  2 files changed, 2 insertions(+), 4 deletions(-)
> 

This looks like a good commit but should be done now in a different way
- using pm_runtime_resume_and_get().  Therefore I am fine with revert
and I can submit later better fix.


Best regards,
Krzysztof