linux-ext4 - Re: [PATCH 6/7] ext4: lost brelse in ext4_xattr_move_to

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]

Date:   Wed, 7 Nov 2018 14:50:16 +0100
From:   Jan Kara <jack@...e.cz>
To:     Vasily Averin <vvs@...tuozzo.com>
Cc:     linux-ext4@...r.kernel.org, Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        linux-kernel@...r.kernel.org, Jan Kara <jack@...e.cz>,
        Kalpak Shah <kalpak@...sterfs.com>
Subject: Re: [PATCH 6/7] ext4: lost brelse in ext4_xattr_move_to_block()

On Wed 31-10-18 22:13:00, Vasily Averin wrote:
> Fixes 3f2571c1f91f ("ext4: factor out xattr moving")
> cc: Jan Kara <jack@...e.cz>
> however issue was present in original ext4_expand_extra_isize_ea()
> Fixes 6dd4ee7cab7e ("ext4: Expand extra_inodes space per ...") # 2.6.23
> cc: Kalpak Shah <kalpak@...sterfs.com>
> 
> Signed-off-by: Vasily Averin <vvs@...tuozzo.com>

Good catch. Thanks for the fix. The patch looks good. You can add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/ext4/xattr.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
> index 07b9a335c8eb..5c9bc0d85cc0 100644
> --- a/fs/ext4/xattr.c
> +++ b/fs/ext4/xattr.c
> @@ -2617,6 +2617,8 @@ static int ext4_xattr_move_to_block(handle_t *handle, struct inode *inode,
>  	kfree(buffer);
>  	if (is)
>  		brelse(is->iloc.bh);
> +	if (bs)
> +		brelse(bs->bh);
>  	kfree(is);
>  	kfree(bs);
>  
> -- 
> 2.17.1
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR