linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: fix incorrect parsing with option string

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 for Android: free password hash cracker in your pocket

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

Message-id: <1395102807.3870.156.camel@kjgkr>
Date:	Tue, 18 Mar 2014 09:33:27 +0900
From:	Jaegeuk Kim <jaegeuk.kim@...sung.com>
To:	Chao Yu <chao2.yu@...sung.com>
Cc:	linux-f2fs-devel@...ts.sourceforge.net,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [f2fs-dev] [PATCH] f2fs: fix incorrect parsing with option string

Hi,

2014-03-17 (월), 17:40 +0800, Chao Yu:
> Previously 'background_gc={on***,off***}' is being parsed as correct option,
> with this patch we cloud fix the trivial bug in mount process.
> 
> Signed-off-by: Chao Yu <chao2.yu@...sung.com>
> ---
>  fs/f2fs/super.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index 057a3ef..6597290 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -258,9 +258,9 @@ static int parse_options(struct super_block *sb, char *options)
>  
>  			if (!name)
>  				return -ENOMEM;
> -			if (!strncmp(name, "on", 2))
> +			if (!strncmp(name, "on", strlen(name)))

What about 'background_gc=o'?
Need to check strlen(name) == 2...
Thanks,

>  				set_opt(sbi, BG_GC);
> -			else if (!strncmp(name, "off", 3))
> +			else if (!strncmp(name, "off", strlen(name)))
>  				clear_opt(sbi, BG_GC);
>  			else {
>  				kfree(name);

-- 
Jaegeuk Kim
Samsung

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/