From: kbuild test robot <lkp@intel.com>
To: Charles Chiou <ch1102chiou@gmail.com>
Cc: kbuild-all@01.org, jejb@linux.vnet.ibm.com,
martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org, linus.chen@tw.promise.com,
grace.chang@tw.promise.com, victor.p@promise.com,
eva.cheng@tw.promise.com, charles.chiou@tw.promise.com,
julian.calaby@gmail.com, Paul <paul.lyu@tw.promise.com>
Subject: Re: [v2 PATCH 1/2] scsi:stex.c Support Pegasus 3 product
Date: Tue, 14 Jun 2016 14:49:42 +0800 [thread overview]
Message-ID: <201606141431.l4DZ7XWG%fengguang.wu@intel.com> (raw)
In-Reply-To: <1465885263-8553-1-git-send-email-ch1102chiou@gmail.com>
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Hi,
[auto build test WARNING on scsi/for-next]
[also build test WARNING on v4.7-rc3 next-20160609]
[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/Charles-Chiou/scsi-stex-c-Support-Pegasus-3-product/20160614-142621
base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next
config: sparc64-allmodconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 5.3.1-8) 5.3.1 20160205
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=sparc64
Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings
All warnings (new ones prefixed by >>):
In file included from arch/sparc/include/asm/string.h:4:0,
from include/linux/string.h:18,
from include/linux/bitmap.h:8,
from include/linux/nodemask.h:94,
from include/linux/mmzone.h:16,
from include/linux/gfp.h:5,
from include/linux/slab.h:14,
from drivers/scsi/stex.c:20:
drivers/scsi/stex.c: In function 'stex_handshake':
>> arch/sparc/include/asm/string_64.h:28:29: warning: 'scratch' may be used uninitialized in this function [-Wmaybe-uninitialized]
#define memset(s, c, count) __builtin_memset(s, c, count)
^
drivers/scsi/stex.c:1111:10: note: 'scratch' was declared here
__le32 *scratch;
^
vim +/scratch +28 arch/sparc/include/asm/string_64.h
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 12 /* Really, userland/ksyms should not see any of this stuff. */
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 13
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 14 #ifdef __KERNEL__
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 15
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 16 #include <asm/asi.h>
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 17
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 18 #ifndef EXPORT_SYMTAB_STROPS
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 19
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 20 /* First the mem*() things. */
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 21 #define __HAVE_ARCH_MEMMOVE
f05a6865 arch/sparc/include/asm/string_64.h Sam Ravnborg 2014-05-16 22 void *memmove(void *, const void *, __kernel_size_t);
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 23
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 24 #define __HAVE_ARCH_MEMCPY
4d14a459 arch/sparc/include/asm/string_64.h David S. Miller 2009-12-10 25 #define memcpy(t, f, n) __builtin_memcpy(t, f, n)
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 26
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 27 #define __HAVE_ARCH_MEMSET
4d14a459 arch/sparc/include/asm/string_64.h David S. Miller 2009-12-10 @28 #define memset(s, c, count) __builtin_memset(s, c, count)
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 29
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 30 #define __HAVE_ARCH_MEMSCAN
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 31
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 32 #undef memscan
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 33 #define memscan(__arg0, __char, __arg2) \
f5e706ad include/asm-sparc/string_64.h Sam Ravnborg 2008-07-17 34 ({ \
f05a6865 arch/sparc/include/asm/string_64.h Sam Ravnborg 2014-05-16 35 void *__memscan_zero(void *, size_t); \
f05a6865 arch/sparc/include/asm/string_64.h Sam Ravnborg 2014-05-16 36 void *__memscan_generic(void *, int, size_t); \
:::::: The code at line 28 was first introduced by commit
:::::: 4d14a459857bd151ecbd14bcd37b4628da00792b sparc: Stop trying to be so fancy and use __builtin_{memcpy,memset}()
:::::: TO: David S. Miller <davem@davemloft.net>
:::::: CC: David S. Miller <davem@davemloft.net>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2016-06-14 6:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-14 6:21 Charles Chiou
2016-06-14 6:49 ` kbuild test robot [this message]
2016-06-14 7:24 ` kbuild test robot
2016-06-14 7:25 ` kbuild test robot
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