Hi Ard, [auto build test ERROR on mmotm/master] [also build test ERROR on v4.12-rc4 next-20170608] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Ard-Biesheuvel/mm-huge-vmap-fail-gracefully-on-unexpected-huge-vmap-mappings/20170609-093236 base: git://git.cmpxchg.org/linux-mmotm.git master config: x86_64-randconfig-x019-201723 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All error/warnings (new ones prefixed by >>): mm/vmalloc.c: In function 'vmalloc_to_page': >> mm/vmalloc.c:2775:0: error: unterminated argument list invoking macro "WARN_ON_ONCE" >> mm/vmalloc.c:303:2: error: 'WARN_ON_ONCE' undeclared (first use in this function) WARN_ON_ONCE(pmd_bad(*pmd); ^~~~~~~~~~~~ mm/vmalloc.c:303:2: note: each undeclared identifier is reported only once for each function it appears in >> mm/vmalloc.c:303:2: error: expected ';' at end of input >> mm/vmalloc.c:303:2: error: expected declaration or statement at end of input mm/vmalloc.c:276:15: warning: unused variable 'pte' [-Wunused-variable] pte_t *ptep, pte; ^~~ mm/vmalloc.c:276:9: warning: unused variable 'ptep' [-Wunused-variable] pte_t *ptep, pte; ^~~~ mm/vmalloc.c:271:15: warning: unused variable 'page' [-Wunused-variable] struct page *page = NULL; ^~~~ mm/vmalloc.c: At top level: >> mm/vmalloc.c:47:13: warning: '__vunmap' used but never defined static void __vunmap(const void *, int); ^~~~~~~~ mm/vmalloc.c: In function 'vmalloc_to_page': >> mm/vmalloc.c:303:2: warning: control reaches end of non-void function [-Wreturn-type] WARN_ON_ONCE(pmd_bad(*pmd); ^~~~~~~~~~~~ At top level: mm/vmalloc.c:240:12: warning: 'vmap_page_range' defined but not used [-Wunused-function] static int vmap_page_range(unsigned long start, unsigned long end, ^~~~~~~~~~~~~~~ mm/vmalloc.c:121:13: warning: 'vunmap_page_range' defined but not used [-Wunused-function] static void vunmap_page_range(unsigned long addr, unsigned long end) ^~~~~~~~~~~~~~~~~ mm/vmalloc.c:49:13: warning: 'free_work' defined but not used [-Wunused-function] static void free_work(struct work_struct *w) ^~~~~~~~~ vim +/WARN_ON_ONCE +2775 mm/vmalloc.c 5f6a6a9c4 Alexey Dobriyan 2008-10-06 2769 proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations); 5f6a6a9c4 Alexey Dobriyan 2008-10-06 2770 return 0; 5f6a6a9c4 Alexey Dobriyan 2008-10-06 2771 } 5f6a6a9c4 Alexey Dobriyan 2008-10-06 2772 module_init(proc_vmalloc_init); db3808c1b Joonsoo Kim 2013-04-29 2773 a10aa5798 Christoph Lameter 2008-04-28 2774 #endif a10aa5798 Christoph Lameter 2008-04-28 @2775 :::::: The code at line 2775 was first introduced by commit :::::: a10aa579878fc6f9cd17455067380bbdf1d53c91 vmalloc: show vmalloced areas via /proc/vmallocinfo :::::: TO: Christoph Lameter <clameter@xxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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