Re: [PATCH v3 01/10] zram: avoid invalid memory access in zram_exit()

2013-06-07 Thread Jerome Marchand
On 06/06/2013 06:07 PM, 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_device(zram) > an

Re: [PATCH v3 01/10] zram: avoid invalid memory access in zram_exit()

2013-06-07 Thread Minchan Kim
Hello Jiang, On Fri, Jun 07, 2013 at 12:07:22AM +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 or

[PATCH v3 01/10] zram: avoid invalid memory access in zram_exit()

2013-06-06 Thread Jiang Liu
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_device(zram) and zram_reset_device(zram), that will cause deadlock i