linux-kernel - Re: [PATCH] Fix messed hunks in generic

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] [day] [month] [year] [list]

Message-ID: <46F8E52A.2090209@linux.vnet.ibm.com>
Date:	Tue, 25 Sep 2007 16:08:34 +0530
From:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
To:	Pavel Emelyanov <xemul@...nvz.org>
CC:	Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Fix messed hunks in generic_setlease

Pavel Emelyanov wrote:
> I have noticed, that one hunk was lost and one duplicated 
> during merging the fix-potential-oops-in-generic_setlease(-xxx) 
> patches. One of the fixes is already in the hot-fixes, but the
> second one is still lost.
> 
> The returned pointer was not the one allocated, but some temporary
> used to scan through the inode's locks list. This caused and OOPS 
> during Kamalesh's testing.
> 
> Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
> 
> ---
> 
> diff --git a/fs/locks.c b/fs/locks.c
> index c0fe71a..c1198e3 100644
> --- a/fs/locks.c
> +++ b/fs/locks.c
> @@ -1423,7 +1418,7 @@ int generic_setlease(struct file *filp, 
>  	locks_copy_lock(new_fl, lease);
>  	locks_insert_lock(before, new_fl);
> 
> -	*flp = fl;
> +	*flp = new_fl;
>  	return 0;
> 
>  out:
> 

Hi Pavel,

I tested your patch and NULL pointer dereference is not triggered.

-- 
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.
-
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/