On Sun, Mar 3, 2024 at 4:46 AM Duoming Zhou <duoming@xxxxxxxxxx> wrote: > > The kcalloc() in nouveau_dmem_evict_chunk() will return null if > the physical memory has run out. As a result, if we dereference > src_pfns, dst_pfns or dma_addrs, the null pointer dereference bugs > will happen. > > This patch uses stack variables to replace the kcalloc(). Won't this blow the stack? And why not just test the return value of kcalloc?
