On 02/19/2013 12:23 AM, Marcin Slusarz wrote: > On Mon, Feb 18, 2013 at 11:27:43AM +0100, Jiri Slaby wrote: >> Hi, >> >> we have a report of WARNING from 3.7.6 in nouveau at >> drivers/gpu/drm/nouveau/core/core/mm.c:242 here: >> https://bugzilla.novell.com/show_bug.cgi?id=802347#c11 >> >> There is an order 4 allocation failure in nouveau_drm_open -> >> nouveau_vm_create, i.e. this one failed: >> vm->pgt = kcalloc(vm->lpde - vm->fpde + 1, sizeof(*vm->pgt), GFP_KERNEL); >> >> Then, on the error path in still in nouveau_drm_open, it is followed by >> a call to nouveau_cli_destroy. But that one calls nouveau_vm_ref -> >> nouveau_mm_fini -> nouveau_vm_del -> nouveau_mm_fini which triggers the >> warning. >> >> Any ideas? > > Crash/warning should be fixed by commit cfd376b6bfccf33782a0748a9c70f7f752f8b869 > "drm/nouveau/vm: fix memory corruption when pgt allocation fails". Oh, thanks for the pointer. Could that bug cause real "memory corruption"? As we're hunting one there... Isn't this a stable-3.7 candidate? > Tomorrow I'll post a patch for page allocation failure. What do you mean -- what kind of patch? -- js suse labs _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
