Re: [PATCH v2 02/10] zram: avoid invalid memory access in zram_exit()

2013-06-05 Thread Jiang Liu
On Wed 05 Jun 2013 02:04:42 PM CST, Minchan Kim wrote: > On Wed, Jun 05, 2013 at 12:06:00AM +0800, Jiang Liu wrote: >> Memory for zram->disk object may have already been freed after returning >> from destroy_device(zram), then it's unsafe for zram_reset_device(zram) >> to access zram->disk again. >

Re: [PATCH v2 02/10] zram: avoid invalid memory access in zram_exit()

2013-06-04 Thread Minchan Kim
On Wed, Jun 05, 2013 at 12:06:00AM +0800, Jiang Liu wrote: > Memory for zram->disk object may have already been freed after returning > from destroy_device(zram), then it's unsafe for zram_reset_device(zram) > to access zram->disk again. > > We can't solve this bug by flipping the order of destroy