[masahiroy:for-next 9/9] <inline asm>:6:2: error: cpu alternatives does not support instructions blocks > 254 bytes

From: kernel test robot
Date: Tue Aug 10 2021 - 01:00:21 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
head: f12b034afeb3a977bbb1c6584dedc0f3dc666f14
commit: f12b034afeb3a977bbb1c6584dedc0f3dc666f14 [9/9] scripts/Makefile.clang: default to LLVM_IAS=1
config: s390-randconfig-r024-20210809 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 614c7d03877fd99c2de47429b15be3f00306a3bd)
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/masahiroy/linux-kbuild.git/commit/?id=f12b034afeb3a977bbb1c6584dedc0f3dc666f14
git remote add masahiroy https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git
git fetch --no-tags masahiroy for-next
git checkout f12b034afeb3a977bbb1c6584dedc0f3dc666f14
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=s390 SHELL=/bin/bash fs/ufs/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

In file included from fs/ufs/inode.c:38:
In file included from include/linux/writeback.h:14:
In file included from include/linux/blk-cgroup.h:23:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
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:36:59: 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 fs/ufs/inode.c:38:
In file included from include/linux/writeback.h:14:
In file included from include/linux/blk-cgroup.h:23:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
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:34:59: 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 fs/ufs/inode.c:38:
In file included from include/linux/writeback.h:14:
In file included from include/linux/blk-cgroup.h:23:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
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);
~~~~~~~~~~ ^
<inline asm>:5:5: error: expected absolute expression
.if 6651b-6641b > 254
^
>> <inline asm>:6:2: error: cpu alternatives does not support instructions blocks > 254 bytes
.error "cpu alternatives does not support instructions blocks > 254 bytes"
^
<inline asm>:8:5: error: expected absolute expression
.if (6651b-6641b) % 2
^
>> <inline asm>:9:2: error: cpu alternatives instructions length is odd
.error "cpu alternatives instructions length is odd"
^
<inline asm>:15:5: error: expected absolute expression
.if -(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) > 6
^
<inline asm>:25:5: error: expected absolute expression
.if 662b-661b > 254
^
<inline asm>:26:2: error: cpu alternatives does not support instructions blocks > 254 bytes
.error "cpu alternatives does not support instructions blocks > 254 bytes"
^
<inline asm>:28:5: error: expected absolute expression
.if (662b-661b) % 2
^
<inline asm>:29:2: error: cpu alternatives instructions length is odd
.error "cpu alternatives instructions length is odd"
^
In file included from fs/ufs/inode.c:29:
In file included from include/linux/uaccess.h:8:
In file included from include/linux/sched.h:14:
In file included from include/linux/pid.h:6:
In file included from include/linux/wait.h:9:
In file included from include/linux/spinlock.h:90:
arch/s390/include/asm/spinlock.h:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
^
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
^
In file included from fs/ufs/inode.c:29:
In file included from include/linux/uaccess.h:8:
In file included from include/linux/sched.h:14:
In file included from include/linux/pid.h:6:
In file included from include/linux/wait.h:9:
In file included from include/linux/spinlock.h:90:
arch/s390/include/asm/spinlock.h:89:3: error: cpu alternatives does not support instructions blocks > 254 bytes
ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
^
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"
^
In file included from fs/ufs/inode.c:29:
In file included from include/linux/uaccess.h:8:
In file included from include/linux/sched.h:14:
In file included from include/linux/pid.h:6:
In file included from include/linux/wait.h:9:
In file included from include/linux/spinlock.h:90:
arch/s390/include/asm/spinlock.h:89:3: error: expected absolute expression
ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
^
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
^
In file included from fs/ufs/inode.c:29:
In file included from include/linux/uaccess.h:8:
In file included from include/linux/sched.h:14:
In file included from include/linux/pid.h:6:
In file included from include/linux/wait.h:9:
In file included from include/linux/spinlock.h:90:
arch/s390/include/asm/spinlock.h:89:3: error: cpu alternatives instructions length is odd
ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
^
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"

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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Next message: Anshuman Khandual: "[PATCH] arm64/perf: Replace '0xf' instances with ID_AA64DFR0_PMUVER_IMP_DEF"
Previous message: Yongji Xie: "Re: [PATCH v5] virtio-blk: Add validation for block size in config space"
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