On (09/25/17 15:16), akpm@xxxxxxxxxxxxxxxxxxxx wrote: > ------------------------------------------------------ > From: Minchan Kim <minchan@xxxxxxxxxx> > Subject: zram: fix null dereference of handle > > In testing I found handle passed to zs_map_object in __zram_bvec_read is > NULL so eh kernel goes oops in pin_object(). > > The reason is there is no routine to check the slot's freeing after > getting the slot's lock. This patch fixes it. > Hello, Andrew, I believe there was V2 of this patch: message id: 1505887347-10881-1-git-send-email-minchan@xxxxxxxxxx -ss