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Date: Thu, 16 Mar 2017 21:39:58 +0800
From: kbuild test robot <fengguang.wu@...el.com>
To: Thomas Garnier <thgarnie@...gle.com>
Cc: kbuild-all@...org, linux-kernel@...r.kernel.org,
tipbuild@...or.com, Ingo Molnar <mingo@...nel.org>
Subject: [tip:x86/mm 1/3] fs/proc/kcore.c:626:40: note: in expansion of macro
'MODULES_END'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/mm
head: 45fc8757d1d2128e342b4e7ef39adedf7752faac
commit: f06bdd4001c257792c54dce9427399f2896470af [1/3] x86/mm: Adapt MODULES_END based on fixmap section size
config: x86_64-randconfig-b0-03161924 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
git checkout f06bdd4001c257792c54dce9427399f2896470af
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
In file included from arch/x86/include/asm/pgtable_types.h:240:0,
from arch/x86/include/asm/paravirt_types.h:44,
from arch/x86/include/asm/ptrace.h:71,
from arch/x86/include/asm/math_emu.h:4,
from arch/x86/include/asm/processor.h:11,
from arch/x86/include/asm/cpufeature.h:4,
from arch/x86/include/asm/thread_info.h:52,
from include/linux/thread_info.h:25,
from arch/x86/include/asm/preempt.h:6,
from include/linux/preempt.h:80,
from include/linux/spinlock.h:50,
from include/linux/mmzone.h:7,
from include/linux/gfp.h:5,
from include/linux/mm.h:9,
from fs/proc/kcore.c:12:
fs/proc/kcore.c: In function 'add_modules_range':
arch/x86/include/asm/pgtable_64_types.h:72:23: error: implicit declaration of function '__fix_to_virt' [-Werror=implicit-function-declaration]
#define MODULES_END __fix_to_virt(__end_of_fixed_addresses + 1)
^
>> fs/proc/kcore.c:626:40: note: in expansion of macro 'MODULES_END'
if (MODULES_VADDR != VMALLOC_START && MODULES_END != VMALLOC_END) {
^~~~~~~~~~~
arch/x86/include/asm/pgtable_64_types.h:72:37: error: '__end_of_fixed_addresses' undeclared (first use in this function)
#define MODULES_END __fix_to_virt(__end_of_fixed_addresses + 1)
^
>> fs/proc/kcore.c:626:40: note: in expansion of macro 'MODULES_END'
if (MODULES_VADDR != VMALLOC_START && MODULES_END != VMALLOC_END) {
^~~~~~~~~~~
arch/x86/include/asm/pgtable_64_types.h:72:37: note: each undeclared identifier is reported only once for each function it appears in
#define MODULES_END __fix_to_virt(__end_of_fixed_addresses + 1)
^
>> fs/proc/kcore.c:626:40: note: in expansion of macro 'MODULES_END'
if (MODULES_VADDR != VMALLOC_START && MODULES_END != VMALLOC_END) {
^~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/MODULES_END +626 fs/proc/kcore.c
9492587c KAMEZAWA Hiroyuki 2009-09-22 610 {
36e15263 Wu Fengguang 2010-05-26 611 kclist_add(&kcore_text, _text, _end - _text, KCORE_TEXT);
9492587c KAMEZAWA Hiroyuki 2009-09-22 612 }
9492587c KAMEZAWA Hiroyuki 2009-09-22 613 #else
9492587c KAMEZAWA Hiroyuki 2009-09-22 614 static void __init proc_kcore_text_init(void)
9492587c KAMEZAWA Hiroyuki 2009-09-22 615 {
9492587c KAMEZAWA Hiroyuki 2009-09-22 616 }
9492587c KAMEZAWA Hiroyuki 2009-09-22 617 #endif
9492587c KAMEZAWA Hiroyuki 2009-09-22 618
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 619 #if defined(CONFIG_MODULES) && defined(MODULES_VADDR)
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 620 /*
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 621 * MODULES_VADDR has no intersection with VMALLOC_ADDR.
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 622 */
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 623 struct kcore_list kcore_modules;
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 624 static void __init add_modules_range(void)
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 625 {
bf3e2692 Baoquan He 2014-10-09 @626 if (MODULES_VADDR != VMALLOC_START && MODULES_END != VMALLOC_END) {
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 627 kclist_add(&kcore_modules, (void *)MODULES_VADDR,
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 628 MODULES_END - MODULES_VADDR, KCORE_VMALLOC);
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 629 }
bf3e2692 Baoquan He 2014-10-09 630 }
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 631 #else
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 632 static void __init add_modules_range(void)
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 633 {
81ac3ad9 KAMEZAWA Hiroyuki 2009-09-22 634 }
:::::: The code at line 626 was first introduced by commit
:::::: bf3e2692468fe46eed57d18b3dd1af5b30049122 fs/proc/kcore.c: don't add modules range to kcore if it's equal to vmcore range
:::::: TO: Baoquan He <bhe@...hat.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
---
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