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Message-ID: <201702202032.y4RtL1WA%fengguang.wu@intel.com>
Date: Mon, 20 Feb 2017 20:30:14 +0800
From: kbuild test robot <lkp@...el.com>
To: Elena Reshetova <elena.reshetova@...el.com>
Cc: kbuild-all@...org, linux-kernel@...r.kernel.org,
cgroups@...r.kernel.org, linux-audit@...hat.com,
linux-fsdevel@...r.kernel.org, peterz@...radead.org,
gregkh@...uxfoundation.org, viro@...iv.linux.org.uk, tj@...nel.org,
mingo@...hat.com, hannes@...xchg.org, lizefan@...wei.com,
acme@...nel.org, alexander.shishkin@...ux.intel.com,
paul@...l-moore.com, eparis@...hat.com, akpm@...ux-foundation.org,
arnd@...db.de, luto@...nel.org,
Elena Reshetova <elena.reshetova@...el.com>,
Hans Liljestrand <ishkamiel@...il.com>,
Kees Cook <keescook@...omium.org>,
David Windsor <dwindsor@...il.com>
Subject: Re: [PATCH 01/19] kernel: convert sighand_struct.count from atomic_t
to refcount_t
Hi Elena,
[auto build test WARNING on next-20170220]
[cannot apply to linus/master linux/master tip/perf/core v4.9-rc8 v4.9-rc7 v4.9-rc6]
[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/Elena-Reshetova/kernel-convert-sighand_struct-count-from-atomic_t-to-refcount_t/20170220-183434
config: blackfin-TCM-BF537_defconfig (attached as .config)
compiler: bfin-uclinux-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
# save the attached .config to linux build tree
make.cross ARCH=blackfin
All warnings (new ones prefixed by >>):
In file included from include/asm-generic/bug.h:4:0,
from arch/blackfin/include/asm/bug.h:71,
from include/linux/bug.h:4,
from include/linux/mmdebug.h:4,
from include/linux/mm.h:8,
from fs/proc/task_nommu.c:2:
fs/proc/task_nommu.c: In function 'task_mem':
include/asm-generic/atomic.h:177:37: error: 'refcount_t {aka struct refcount_struct}' has no member named 'counter'
#define atomic_read(v) READ_ONCE((v)->counter)
^
include/linux/compiler.h:316:17: note: in definition of macro '__READ_ONCE'
union { typeof(x) __val; char __c[1]; } __u; \
^
include/asm-generic/atomic.h:177:24: note: in expansion of macro 'READ_ONCE'
#define atomic_read(v) READ_ONCE((v)->counter)
^~~~~~~~~
>> fs/proc/task_nommu.c:64:26: note: in expansion of macro 'atomic_read'
if (current->sighand && atomic_read(¤t->sighand->count) > 1)
^~~~~~~~~~~
include/asm-generic/atomic.h:177:37: error: 'refcount_t {aka struct refcount_struct}' has no member named 'counter'
#define atomic_read(v) READ_ONCE((v)->counter)
^
include/linux/compiler.h:318:22: note: in definition of macro '__READ_ONCE'
__read_once_size(&(x), __u.__c, sizeof(x)); \
^
include/asm-generic/atomic.h:177:24: note: in expansion of macro 'READ_ONCE'
#define atomic_read(v) READ_ONCE((v)->counter)
^~~~~~~~~
>> fs/proc/task_nommu.c:64:26: note: in expansion of macro 'atomic_read'
if (current->sighand && atomic_read(¤t->sighand->count) > 1)
^~~~~~~~~~~
include/asm-generic/atomic.h:177:37: error: 'refcount_t {aka struct refcount_struct}' has no member named 'counter'
#define atomic_read(v) READ_ONCE((v)->counter)
^
include/linux/compiler.h:318:42: note: in definition of macro '__READ_ONCE'
__read_once_size(&(x), __u.__c, sizeof(x)); \
^
include/asm-generic/atomic.h:177:24: note: in expansion of macro 'READ_ONCE'
#define atomic_read(v) READ_ONCE((v)->counter)
^~~~~~~~~
>> fs/proc/task_nommu.c:64:26: note: in expansion of macro 'atomic_read'
if (current->sighand && atomic_read(¤t->sighand->count) > 1)
^~~~~~~~~~~
include/asm-generic/atomic.h:177:37: error: 'refcount_t {aka struct refcount_struct}' has no member named 'counter'
#define atomic_read(v) READ_ONCE((v)->counter)
^
include/linux/compiler.h:320:30: note: in definition of macro '__READ_ONCE'
__read_once_size_nocheck(&(x), __u.__c, sizeof(x)); \
^
include/asm-generic/atomic.h:177:24: note: in expansion of macro 'READ_ONCE'
#define atomic_read(v) READ_ONCE((v)->counter)
^~~~~~~~~
>> fs/proc/task_nommu.c:64:26: note: in expansion of macro 'atomic_read'
if (current->sighand && atomic_read(¤t->sighand->count) > 1)
^~~~~~~~~~~
include/asm-generic/atomic.h:177:37: error: 'refcount_t {aka struct refcount_struct}' has no member named 'counter'
#define atomic_read(v) READ_ONCE((v)->counter)
^
include/linux/compiler.h:320:50: note: in definition of macro '__READ_ONCE'
__read_once_size_nocheck(&(x), __u.__c, sizeof(x)); \
^
include/asm-generic/atomic.h:177:24: note: in expansion of macro 'READ_ONCE'
#define atomic_read(v) READ_ONCE((v)->counter)
^~~~~~~~~
>> fs/proc/task_nommu.c:64:26: note: in expansion of macro 'atomic_read'
if (current->sighand && atomic_read(¤t->sighand->count) > 1)
^~~~~~~~~~~
vim +/atomic_read +64 fs/proc/task_nommu.c
^1da177e Linus Torvalds 2005-04-16 48
^1da177e Linus Torvalds 2005-04-16 49 if (atomic_read(&mm->mm_count) > 1)
^1da177e Linus Torvalds 2005-04-16 50 sbytes += kobjsize(mm);
^1da177e Linus Torvalds 2005-04-16 51 else
^1da177e Linus Torvalds 2005-04-16 52 bytes += kobjsize(mm);
^1da177e Linus Torvalds 2005-04-16 53
498052bb Al Viro 2009-03-30 54 if (current->fs && current->fs->users > 1)
^1da177e Linus Torvalds 2005-04-16 55 sbytes += kobjsize(current->fs);
^1da177e Linus Torvalds 2005-04-16 56 else
^1da177e Linus Torvalds 2005-04-16 57 bytes += kobjsize(current->fs);
^1da177e Linus Torvalds 2005-04-16 58
^1da177e Linus Torvalds 2005-04-16 59 if (current->files && atomic_read(¤t->files->count) > 1)
^1da177e Linus Torvalds 2005-04-16 60 sbytes += kobjsize(current->files);
^1da177e Linus Torvalds 2005-04-16 61 else
^1da177e Linus Torvalds 2005-04-16 62 bytes += kobjsize(current->files);
^1da177e Linus Torvalds 2005-04-16 63
^1da177e Linus Torvalds 2005-04-16 @64 if (current->sighand && atomic_read(¤t->sighand->count) > 1)
^1da177e Linus Torvalds 2005-04-16 65 sbytes += kobjsize(current->sighand);
^1da177e Linus Torvalds 2005-04-16 66 else
^1da177e Linus Torvalds 2005-04-16 67 bytes += kobjsize(current->sighand);
^1da177e Linus Torvalds 2005-04-16 68
^1da177e Linus Torvalds 2005-04-16 69 bytes += kobjsize(current); /* includes kernel stack */
^1da177e Linus Torvalds 2005-04-16 70
df5f8314 Eric W. Biederman 2008-02-08 71 seq_printf(m,
^1da177e Linus Torvalds 2005-04-16 72 "Mem:\t%8lu bytes\n"
:::::: The code at line 64 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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