Re: [PATCH v2 08/10] zram: protect sysfs handler from invalid memoryaccess

[Minchan Kim]

On Wed, Jun 05, 2013 at 12:06:06AM +0800, Jiang Liu wrote:
> Use zram->init_lock to protect access to zram->meta, otherwise it
> may cause invalid memory access if zram->meta has been freed by
> zram_reset_device().
> 
> This issue may be triggered by:
> Thread 1:
> while true; do cat mem_used_total; done
> Thread 2:
> while true; do echo 8M > disksize; echo 1 > reset; done
> 
> Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

Acked-by: Minchan Kim <minchan@xxxxxxxxxx>


-- 
Kind regards,
Minchan Kim
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