Oh. I am really sorry. I broke NOMMU again, and this time I was really stupid. And thanks a lot Kirill! I am travelling till the end of the next week, can't be responsive until I return :/ On 07/24, Kirill A. Shutemov wrote: > > On Fri, Jul 24, 2015 at 06:46:09AM +0800, kbuild test robot wrote: > > tree: git://git.cmpxchg.org/linux-mmotm.git master > > head: 61f5f835b6f06fbc233481b5d3c0afd71ecf54e8 > > commit: b9e95c5dd1134d35b6c9aeaa3967ab5b3945ba73 [371/385] mm, mpx: add "vm_flags_t vm_flags" arg to do_mmap_pgoff() > > config: microblaze-nommu_defconfig (attached as .config) > > reproduce: > > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > > chmod +x ~/bin/make.cross > > git checkout b9e95c5dd1134d35b6c9aeaa3967ab5b3945ba73 > > # save the attached .config to linux build tree > > make.cross ARCH=microblaze > > > > All error/warnings (new ones prefixed by >>): > > > > mm/nommu.c: In function 'do_mmap': > > >> mm/nommu.c:1248:30: error: 'vm_flags' redeclared as different kind of symbol > > unsigned long capabilities, vm_flags, result; > > ^ > > mm/nommu.c:1241:15: note: previous definition of 'vm_flags' was here > > vm_flags_t vm_flags, > > ^ > > > > This should fix the issue: > > diff --git a/mm/nommu.c b/mm/nommu.c > index 530eea5af989..af2196e35013 100644 > --- a/mm/nommu.c > +++ b/mm/nommu.c > @@ -1245,7 +1245,7 @@ unsigned long do_mmap(struct file *file, > struct vm_area_struct *vma; > struct vm_region *region; > struct rb_node *rb; > - unsigned long capabilities, vm_flags, result; > + unsigned long capabilities, result; > int ret; > > *populate = 0; > @@ -1263,7 +1263,7 @@ unsigned long do_mmap(struct file *file, > > /* we've determined that we can make the mapping, now translate what we > * now know into VMA flags */ > - vm_flags = determine_vm_flags(file, prot, flags, capabilities); > + vm_flags |= determine_vm_flags(file, prot, flags, capabilities); > > /* we're going to need to record the mapping */ > region = kmem_cache_zalloc(vm_region_jar, GFP_KERNEL); > -- > Kirill A. Shutemov -- 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>