On Tue, Feb 19, 2019 at 12:28:55AM +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master > head: 3c4fcc2648569c3fe573849f9254c8c3499ec648 > commit: 9ac483109d19095e22414e46d38a6817520883b9 [2/6] arch: move common mmap flags to linux/mman.h > config: x86_64-kexec (attached as .config) > compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > reproduce: > git checkout 9ac483109d19095e22414e46d38a6817520883b9 > # save the attached .config to linux build tree > make ARCH=x86_64 > > All errors (new ones prefixed by >>): > > arch/x86//mm/mpx.c: In function 'mpx_mmap': > >> arch/x86//mm/mpx.c:57:26: error: 'MAP_PRIVATE' undeclared (first use in this function); did you mean 'DQF_PRIVATE'? > MAP_ANONYMOUS | MAP_PRIVATE, VM_MPX, 0, &populate, NULL); > ^~~~~~~~~~~ > DQF_PRIVATE > arch/x86//mm/mpx.c:57:26: note: each undeclared identifier is reported only once for each function it appears in Arnd I think you are missing: x86/mpx: tweak header name The whole file is going away eventually: https://lkml.kernel.org/r/7de5232f-4bc1-5c85-00d5-cb646462577f@xxxxxxxxx but to avoid breaking bisect I think it's needed. > vim +57 arch/x86//mm/mpx.c > > 613fcb7d3 Dave Hansen 2015-06-07 41 > 57319d80e Qiaowei Ren 2014-11-14 42 /* > 57319d80e Qiaowei Ren 2014-11-14 43 * This is really a simplified "vm_mmap". it only handles MPX > 57319d80e Qiaowei Ren 2014-11-14 44 * bounds tables (the bounds directory is user-allocated). > 57319d80e Qiaowei Ren 2014-11-14 45 */ > 57319d80e Qiaowei Ren 2014-11-14 46 static unsigned long mpx_mmap(unsigned long len) > 57319d80e Qiaowei Ren 2014-11-14 47 { > 57319d80e Qiaowei Ren 2014-11-14 48 struct mm_struct *mm = current->mm; > 1fcfd8db7 Oleg Nesterov 2015-09-09 49 unsigned long addr, populate; > 57319d80e Qiaowei Ren 2014-11-14 50 > eb099e5bc Dave Hansen 2015-06-07 51 /* Only bounds table can be allocated here */ > 613fcb7d3 Dave Hansen 2015-06-07 52 if (len != mpx_bt_size_bytes(mm)) > 57319d80e Qiaowei Ren 2014-11-14 53 return -EINVAL; > 57319d80e Qiaowei Ren 2014-11-14 54 > 57319d80e Qiaowei Ren 2014-11-14 55 down_write(&mm->mmap_sem); > 1fcfd8db7 Oleg Nesterov 2015-09-09 56 addr = do_mmap(NULL, 0, len, PROT_READ | PROT_WRITE, > 897ab3e0c Mike Rapoport 2017-02-24 @57 MAP_ANONYMOUS | MAP_PRIVATE, VM_MPX, 0, &populate, NULL); > 57319d80e Qiaowei Ren 2014-11-14 58 up_write(&mm->mmap_sem); > 1fcfd8db7 Oleg Nesterov 2015-09-09 59 if (populate) > 1fcfd8db7 Oleg Nesterov 2015-09-09 60 mm_populate(addr, populate); > 57319d80e Qiaowei Ren 2014-11-14 61 > 1fcfd8db7 Oleg Nesterov 2015-09-09 62 return addr; > 57319d80e Qiaowei Ren 2014-11-14 63 } > fcc7ffd67 Dave Hansen 2014-11-14 64 > > :::::: The code at line 57 was first introduced by commit > :::::: 897ab3e0c49e24b62e2d54d165c7afec6bbca65b userfaultfd: non-cooperative: add event for memory unmaps > > :::::: TO: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> > :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation
