linux-kernel - Re: [PATCH] x86: Fix off-by-one error in loop termination.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170911005212.GA1254@linux-zmni.DHCP>
Date:   Mon, 11 Sep 2017 08:52:13 +0800
From:   Sean Fu <fxinrong@...il.com>
To:     tglx@...utronix.de
Cc:     mingo@...hat.com, hpa@...or.com, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: Fix off-by-one error in loop termination.

On Mon, Sep 11, 2017 at 08:33:21AM +0800, Sean Fu wrote:
> An off-by-one error in loop terminantion conditions in
> create_setup_data_nodes will lead to memory leak when
> create_setup_data_node return error.
> 
> Signed-off-by: Sean Fu <fxinrong@...il.com>
> ---
>  arch/x86/kernel/ksysfs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/kernel/ksysfs.c b/arch/x86/kernel/ksysfs.c
> index 4afc67f..cfde6c0 100644
> --- a/arch/x86/kernel/ksysfs.c
> +++ b/arch/x86/kernel/ksysfs.c
> @@ -299,7 +299,7 @@ static int __init create_setup_data_nodes(struct kobject *parent)
>  	return 0;
>  
>  out_clean_nodes:
> -	for (j = i - 1; j > 0; j--)
> +	for (j = i - 1; j >= 0; j--)
>  		cleanup_setup_data_node(*(kobjp + j));
>  	kfree(kobjp);
>  out_setup_data_kobj:
> -- 
> 2.6.2
>
Appologize for the wrong subject prefix in previous email.
Resent the patch right now.

Could you please review this patch?

Thanks