On 20/02/18 22:54, Matthew Wilcox wrote: > On Tue, Feb 20, 2018 at 09:53:30PM +0200, Igor Stoppa wrote: [...] >> It was found while testing on a configuration with framebuffer. > > ... ah. You tried to use vmalloc_to_page() on something which wasn't > backed by a struct page. That's *supposed* to return NULL, but my > guess is that after this patch it returned garbage. it seems to return garbage also without this patch, but I need to clean up the code, try it again and possibly come up with a demo patch for triggering the problem. I'll investigate it more. However it doesn't seem to be related to the functionality I need. So I plan to treat it as separate issue and leave find_vm_area untouched, at least in pmalloc scope. -- igor -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
