[PATCH v3 06/10] zram: protect sysfs handler from invalid memory access

Jerome Marchand jmarchan at redhat.com
Fri Jun 7 09:41:33 UTC 2013

On 06/06/2013 06:07 PM, 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 at huawei.com>
> Acked-by: Minchan Kim <minchan at kernel.org>
> Cc: stable at vger.kernel.org

Acked-by: Jerome Marchand <jmarchan at redhat.com>

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