lkml.org 
[lkml]   [2013]   [Oct]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v7 3/3] Staging: zram: Fix variable dereferenced before check
On Wed, Oct 30, 2013 at 04:45:24AM +0530, Rashika Kheria wrote:
> This patch fixes the following Smatch warning in zram_drv.c-
> drivers/staging/zram/zram_drv.c:899
> destroy_device() warn: variable dereferenced before check 'zram->disk' (see line 896)
>
> Cc: stable@vger.kernel.org

It shouldn't be a stable stuff because it's just warning of Smatch
but there is no bug in real practice.

> Acked-by: Minchan Kim <minchan@kernel.org>
> Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
> ---
> drivers/staging/zram/zram_drv.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
> index 592e760..bf28d56 100644
> --- a/drivers/staging/zram/zram_drv.c
> +++ b/drivers/staging/zram/zram_drv.c
> @@ -901,13 +901,10 @@ static void destroy_device(struct zram *zram)
> sysfs_remove_group(&disk_to_dev(zram->disk)->kobj,
> &zram_disk_attr_group);
>
> - if (zram->disk) {
> - del_gendisk(zram->disk);
> - put_disk(zram->disk);
> - }
> + del_gendisk(zram->disk);
> + put_disk(zram->disk);
>
> - if (zram->queue)
> - blk_cleanup_queue(zram->queue);
> + blk_cleanup_queue(zram->queue);
> }
>
> static int __init zram_init(void)
> --
> 1.7.9.5
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/

--
Kind regards,
Minchan Kim


\
 
 \ /
  Last update: 2013-10-30 04:01    [W:0.069 / U:0.372 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site