* arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
@ 2022-01-30 8:53 ` kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-01-30 8:53 UTC (permalink / raw)
To: Kees Cook
Cc: llvm, kbuild-all, linux-kernel, Marco Elver, Andrew Morton,
Linux Memory Management List
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f8c7e4ede46fe63ff10000669652648aab09d112
commit: 69d0db01e210e07fe915e5da91b54a867cda040f ubsan: remove CONFIG_UBSAN_OBJECT_SIZE
date: 10 days ago
config: s390-randconfig-c005-20220130 (https://download.01.org/0day-ci/archive/20220130/202201301448.qXX8mRNr-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 33b45ee44b1f32ffdbc995e6fec806271b4b3ba4)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=69d0db01e210e07fe915e5da91b54a867cda040f
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 69d0db01e210e07fe915e5da91b54a867cda040f
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from arch/s390/lib/spinlock.c:17:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from arch/s390/lib/spinlock.c:17:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from arch/s390/lib/spinlock.c:17:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if " len " > 254\n" \
^
<inline asm>:5:5: note: instantiated into assembly here
.if 6651b-6641b > 254
^
>> arch/s390/lib/spinlock.c:78:3: error: cpu alternatives does not support instructions blocks > 254 bytes
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives does not support instructions " \
^
<inline asm>:6:2: note: instantiated into assembly here
.error "cpu alternatives does not support instructions blocks > 254 bytes"
^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if (" len ") %% 2\n" \
^
<inline asm>:8:5: note: instantiated into assembly here
.if (6651b-6641b) % 2
^
>> arch/s390/lib/spinlock.c:78:3: error: cpu alternatives instructions length is odd
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives instructions length is odd\"\n" \
^
<inline asm>:9:2: note: instantiated into assembly here
.error "cpu alternatives instructions length is odd"
^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:83:2: note: expanded from macro 'OLDINSTR'
OLDINSTR_PADDING(oldinstr, num) \
^
arch/s390/include/asm/alternative.h:71:3: note: expanded from macro 'OLDINSTR_PADDING'
".if " oldinstr_pad_len(num) " > 6\n" \
^
<inline asm>:15:5: note: instantiated into assembly here
.if -(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) > 6
^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if " len " > 254\n" \
^
<inline asm>:25:5: note: instantiated into assembly here
.if 662b-661b > 254
^
>> arch/s390/lib/spinlock.c:78:3: error: cpu alternatives does not support instructions blocks > 254 bytes
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives does not support instructions " \
^
<inline asm>:26:2: note: instantiated into assembly here
.error "cpu alternatives does not support instructions blocks > 254 bytes"
^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if (" len ") %% 2\n" \
^
<inline asm>:28:5: note: instantiated into assembly here
.if (662b-661b) % 2
^
>> arch/s390/lib/spinlock.c:78:3: error: cpu alternatives instructions length is odd
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives instructions length is odd\"\n" \
^
<inline asm>:29:2: note: instantiated into assembly here
.error "cpu alternatives instructions length is odd"
^
arch/s390/lib/spinlock.c:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if " len " > 254\n" \
^
<inline asm>:5:5: note: instantiated into assembly here
.if 6651b-6641b > 254
^
arch/s390/lib/spinlock.c:89:3: error: cpu alternatives does not support instructions blocks > 254 bytes
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives does not support instructions " \
^
<inline asm>:6:2: note: instantiated into assembly here
.error "cpu alternatives does not support instructions blocks > 254 bytes"
^
arch/s390/lib/spinlock.c:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if (" len ") %% 2\n" \
^
<inline asm>:8:5: note: instantiated into assembly here
.if (6651b-6641b) % 2
^
arch/s390/lib/spinlock.c:89:3: error: cpu alternatives instructions length is odd
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives instructions length is odd\"\n" \
^
<inline asm>:9:2: note: instantiated into assembly here
.error "cpu alternatives instructions length is odd"
^
arch/s390/lib/spinlock.c:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:83:2: note: expanded from macro 'OLDINSTR'
OLDINSTR_PADDING(oldinstr, num) \
^
arch/s390/include/asm/alternative.h:71:3: note: expanded from macro 'OLDINSTR_PADDING'
".if " oldinstr_pad_len(num) " > 6\n" \
^
<inline asm>:15:5: note: instantiated into assembly here
.if -(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) > 6
^
arch/s390/lib/spinlock.c:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if " len " > 254\n" \
vim +78 arch/s390/lib/spinlock.c
b96f7d881ad942 Martin Schwidefsky 2017-03-24 72
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 73 static inline int arch_load_niai4(int *lock)
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 74 {
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 75 int owner;
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 76
cceb018377a123 Heiko Carstens 2019-10-18 77 asm_inline volatile(
f554be42fd0fd8 Vasily Gorbik 2017-10-12 @78 ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 79 " l %0,%1\n"
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 80 : "=d" (owner) : "Q" (*lock) : "memory");
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 81 return owner;
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 82 }
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 83
:::::: The code at line 78 was first introduced by commit
:::::: f554be42fd0fd8dd14680c67f2db26b3e7de9670 s390/spinlock: use cpu alternatives to enable niai instruction
:::::: TO: Vasily Gorbik <gor@linux.vnet.ibm.com>
:::::: CC: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 2+ messages in thread
* arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
@ 2022-01-30 8:53 ` kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-01-30 8:53 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 19273 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f8c7e4ede46fe63ff10000669652648aab09d112
commit: 69d0db01e210e07fe915e5da91b54a867cda040f ubsan: remove CONFIG_UBSAN_OBJECT_SIZE
date: 10 days ago
config: s390-randconfig-c005-20220130 (https://download.01.org/0day-ci/archive/20220130/202201301448.qXX8mRNr-lkp(a)intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 33b45ee44b1f32ffdbc995e6fec806271b4b3ba4)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=69d0db01e210e07fe915e5da91b54a867cda040f
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 69d0db01e210e07fe915e5da91b54a867cda040f
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from arch/s390/lib/spinlock.c:17:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from arch/s390/lib/spinlock.c:17:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from arch/s390/lib/spinlock.c:17:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if " len " > 254\n" \
^
<inline asm>:5:5: note: instantiated into assembly here
.if 6651b-6641b > 254
^
>> arch/s390/lib/spinlock.c:78:3: error: cpu alternatives does not support instructions blocks > 254 bytes
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives does not support instructions " \
^
<inline asm>:6:2: note: instantiated into assembly here
.error "cpu alternatives does not support instructions blocks > 254 bytes"
^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if (" len ") %% 2\n" \
^
<inline asm>:8:5: note: instantiated into assembly here
.if (6651b-6641b) % 2
^
>> arch/s390/lib/spinlock.c:78:3: error: cpu alternatives instructions length is odd
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives instructions length is odd\"\n" \
^
<inline asm>:9:2: note: instantiated into assembly here
.error "cpu alternatives instructions length is odd"
^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:83:2: note: expanded from macro 'OLDINSTR'
OLDINSTR_PADDING(oldinstr, num) \
^
arch/s390/include/asm/alternative.h:71:3: note: expanded from macro 'OLDINSTR_PADDING'
".if " oldinstr_pad_len(num) " > 6\n" \
^
<inline asm>:15:5: note: instantiated into assembly here
.if -(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) > 6
^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if " len " > 254\n" \
^
<inline asm>:25:5: note: instantiated into assembly here
.if 662b-661b > 254
^
>> arch/s390/lib/spinlock.c:78:3: error: cpu alternatives does not support instructions blocks > 254 bytes
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives does not support instructions " \
^
<inline asm>:26:2: note: instantiated into assembly here
.error "cpu alternatives does not support instructions blocks > 254 bytes"
^
>> arch/s390/lib/spinlock.c:78:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if (" len ") %% 2\n" \
^
<inline asm>:28:5: note: instantiated into assembly here
.if (662b-661b) % 2
^
>> arch/s390/lib/spinlock.c:78:3: error: cpu alternatives instructions length is odd
ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives instructions length is odd\"\n" \
^
<inline asm>:29:2: note: instantiated into assembly here
.error "cpu alternatives instructions length is odd"
^
arch/s390/lib/spinlock.c:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if " len " > 254\n" \
^
<inline asm>:5:5: note: instantiated into assembly here
.if 6651b-6641b > 254
^
arch/s390/lib/spinlock.c:89:3: error: cpu alternatives does not support instructions blocks > 254 bytes
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives does not support instructions " \
^
<inline asm>:6:2: note: instantiated into assembly here
.error "cpu alternatives does not support instructions blocks > 254 bytes"
^
arch/s390/lib/spinlock.c:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if (" len ") %% 2\n" \
^
<inline asm>:8:5: note: instantiated into assembly here
.if (6651b-6641b) % 2
^
arch/s390/lib/spinlock.c:89:3: error: cpu alternatives instructions length is odd
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:111:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:106:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives instructions length is odd\"\n" \
^
<inline asm>:9:2: note: instantiated into assembly here
.error "cpu alternatives instructions length is odd"
^
arch/s390/lib/spinlock.c:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:83:2: note: expanded from macro 'OLDINSTR'
OLDINSTR_PADDING(oldinstr, num) \
^
arch/s390/include/asm/alternative.h:71:3: note: expanded from macro 'OLDINSTR_PADDING'
".if " oldinstr_pad_len(num) " > 6\n" \
^
<inline asm>:15:5: note: instantiated into assembly here
.if -(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) > 6
^
arch/s390/lib/spinlock.c:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:85:2: note: expanded from macro 'OLDINSTR'
INSTR_LEN_SANITY_CHECK(oldinstr_len)
^
arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if " len " > 254\n" \
vim +78 arch/s390/lib/spinlock.c
b96f7d881ad942 Martin Schwidefsky 2017-03-24 72
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 73 static inline int arch_load_niai4(int *lock)
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 74 {
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 75 int owner;
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 76
cceb018377a123 Heiko Carstens 2019-10-18 77 asm_inline volatile(
f554be42fd0fd8 Vasily Gorbik 2017-10-12 @78 ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 79 " l %0,%1\n"
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 80 : "=d" (owner) : "Q" (*lock) : "memory");
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 81 return owner;
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 82 }
7f7e6e28cd3285 Martin Schwidefsky 2017-04-19 83
:::::: The code at line 78 was first introduced by commit
:::::: f554be42fd0fd8dd14680c67f2db26b3e7de9670 s390/spinlock: use cpu alternatives to enable niai instruction
:::::: TO: Vasily Gorbik <gor@linux.vnet.ibm.com>
:::::: CC: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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