linux-kernel - Re: [PATCH 031/190] Revert "test_objagg: Fix potential memory leak in error handling"

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Date:   Wed, 28 Apr 2021 09:11:12 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Aditya Pakki <pakki001@....edu>,
        "David S . Miller" <davem@...emloft.net>
Subject: Re: [PATCH 031/190] Revert "test_objagg: Fix potential memory leak
 in error handling"

On Wed, Apr 21, 2021 at 02:58:26PM +0200, Greg Kroah-Hartman wrote:
> This reverts commit a6379f0ad6375a707e915518ecd5c2270afcd395.
> 
> 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: Aditya Pakki <pakki001@....edu>
> Cc: David S. Miller <davem@...emloft.net>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  lib/test_objagg.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/lib/test_objagg.c b/lib/test_objagg.c
> index da137939a410..72c1abfa154d 100644
> --- a/lib/test_objagg.c
> +++ b/lib/test_objagg.c
> @@ -979,10 +979,10 @@ static int test_hints_case(const struct hints_case *hints_case)
>  err_world2_obj_get:
>  	for (i--; i >= 0; i--)
>  		world_obj_put(&world2, objagg, hints_case->key_ids[i]);
> -	i = hints_case->key_ids_count;
> +	objagg_hints_put(hints);
>  	objagg_destroy(objagg2);
> +	i = hints_case->key_ids_count;
>  err_check_expect_hints_stats:
> -	objagg_hints_put(hints);
>  err_hints_get:
>  err_check_expect_stats:
>  err_world_obj_get:
> -- 
> 2.31.1
> 

This commit looks correct to me, so I will drop the revert.

greg k-h