Re: [PATCH] Fix messed hunks in generic_setlease

[Kamalesh Babulal]

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@xxxxxxxxxx>
> 
> ---
> 
> 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@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/