linux-kernel - Re: [PATCH 100/190] Revert "staging: greybus: audio_manager: fix a missing check of ida_simple

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Date:   Thu, 22 Apr 2021 10:43:45 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, Kangjie Lu <kjlu@....edu>,
        Vaibhav Agarwal <vaibhav.sr@...il.com>
Subject: Re: [PATCH 100/190] Revert "staging: greybus: audio_manager: fix a
 missing check of ida_simple_get"

On 21-04-21, 14:59, Greg Kroah-Hartman wrote:
> This reverts commit b5af36e3e5aa074605a4d90a89dd8f714b30909b.
> 
> 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: Kangjie Lu <kjlu@....edu>
> Cc: Vaibhav Agarwal <vaibhav.sr@...il.com>
> Cc: Viresh Kumar <viresh.kumar@...aro.org>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  drivers/staging/greybus/audio_manager.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/staging/greybus/audio_manager.c b/drivers/staging/greybus/audio_manager.c
> index 9a3f7c034ab4..7c7ca671876d 100644
> --- a/drivers/staging/greybus/audio_manager.c
> +++ b/drivers/staging/greybus/audio_manager.c
> @@ -45,9 +45,6 @@ int gb_audio_manager_add(struct gb_audio_manager_module_descriptor *desc)
>  	int err;
>  
>  	id = ida_simple_get(&module_id, 0, 0, GFP_KERNEL);
> -	if (id < 0)
> -		return id;
> -
>  	err = gb_audio_manager_module_create(&module, manager_kset,
>  					     id, desc);
>  	if (err) {

FWIW, this patch was doing the right thing IMO. So we may not want to
revert it.

-- 
viresh