On 4/26/21 8:32 AM, Lv Yunlong wrote: > In null_init, null_add_dev(dev) is called. > In null_add_dev, it calls null_free_zoned_dev(dev) to free dev->zones > via kvfree(dev->zones) in out_cleanup_zone branch and returns err. > Then null_init accept the err code and then calls null_free_dev(dev). > > But in null_free_dev(dev), dev->zones is freed again by > null_free_zoned_dev(). > > My patch set dev->zones to NULL in null_free_zoned_dev() after > kvfree(dev->zones) is called, to avoid the double free. Applied, thanks. -- Jens Axboe
