tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 421cf055e6a2d2d91556320781175b8050da2b7c commit: 197b090832eaa4a6ed2e092ff8d4ab3f0511a049 [7614/7828] userfaultfd: non-cooperative: add event for memory unmaps config: c6x-evmc6678_defconfig (attached as .config) compiler: c6x-elf-gcc (GCC) 6.2.0 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 197b090832eaa4a6ed2e092ff8d4ab3f0511a049 # save the attached .config to linux build tree make.cross ARCH=c6x All errors (new ones prefixed by >>): ipc/shm.c: In function 'SYSC_shmdt': >> ipc/shm.c:1368:3: error: too few arguments to function 'do_munmap' do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start); ^~~~~~~~~ In file included from ipc/shm.c:28:0: include/linux/mm.h:2093:12: note: declared here extern int do_munmap(struct mm_struct *, unsigned long, size_t, ^~~~~~~~~ -- >> mm/nommu.c:1201:15: error: conflicting types for 'do_mmap' unsigned long do_mmap(struct file *file, ^~~~~~~ In file included from mm/nommu.c:19:0: include/linux/mm.h:2089:22: note: previous declaration of 'do_mmap' was here extern unsigned long do_mmap(struct file *file, unsigned long addr, ^~~~~~~ >> mm/nommu.c:1580:5: error: conflicting types for 'do_munmap' int do_munmap(struct mm_struct *mm, unsigned long start, size_t len) ^~~~~~~~~ In file included from mm/nommu.c:19:0: include/linux/mm.h:2093:12: note: previous declaration of 'do_munmap' was here extern int do_munmap(struct mm_struct *, unsigned long, size_t, ^~~~~~~~~ In file included from mm/nommu.c:18:0: mm/nommu.c:1638:15: error: conflicting types for 'do_munmap' EXPORT_SYMBOL(do_munmap); ^ include/linux/export.h:58:21: note: in definition of macro '___EXPORT_SYMBOL' extern typeof(sym) sym; \ ^~~ mm/nommu.c:1638:1: note: in expansion of macro 'EXPORT_SYMBOL' EXPORT_SYMBOL(do_munmap); ^~~~~~~~~~~~~ In file included from mm/nommu.c:19:0: include/linux/mm.h:2093:12: note: previous declaration of 'do_munmap' was here extern int do_munmap(struct mm_struct *, unsigned long, size_t, ^~~~~~~~~ vim +/do_munmap +1368 ipc/shm.c ^1da177e4 Linus Torvalds 2005-04-16 1362 8feae1311 David Howells 2009-01-08 1363 #else /* CONFIG_MMU */ 8feae1311 David Howells 2009-01-08 1364 /* under NOMMU conditions, the exact address to be destroyed must be 63980c80e Shailesh Pandey 2016-12-14 1365 * given 63980c80e Shailesh Pandey 2016-12-14 1366 */ 530fcd16d Davidlohr Bueso 2013-09-11 1367 if (vma && vma->vm_start == addr && vma->vm_ops == &shm_vm_ops) { 8feae1311 David Howells 2009-01-08 @1368 do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start); 8feae1311 David Howells 2009-01-08 1369 retval = 0; 8feae1311 David Howells 2009-01-08 1370 } 8feae1311 David Howells 2009-01-08 1371 :::::: The code at line 1368 was first introduced by commit :::::: 8feae13110d60cc6287afabc2887366b0eb226c2 NOMMU: Make VMAs per MM as for MMU-mode linux :::::: TO: David Howells <dhowells@xxxxxxxxxx> :::::: CC: David Howells <dhowells@xxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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