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Date: Mon, 18 Oct 2021 08:14:28 +0800
From: kernel test robot <lkp@...el.com>
To: Jisheng Zhang <jszhang3@...l.ustc.edu.cn>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Masahiro Yamada <masahiroy@...nel.org>,
Michal Marek <michal.lkml@...kovi.net>,
Nick Desaulniers <ndesaulniers@...gle.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-kbuild@...r.kernel.org
Subject: Re: [PATCH 1/2] riscv: consolidate __ex_table construction
Hi Jisheng,
I love your patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v5.15-rc5 next-20211015]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Jisheng-Zhang/riscv-switch-to-relative-extable/20211017-001318
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 8fe31e0995f048d16b378b90926793a0aa4af1e5
config: riscv-randconfig-r032-20211017 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 746dd6a700931988dd9021d3d04718f1929885a5)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://github.com/0day-ci/linux/commit/23c273bf6ec4ca672a21dba701725087208dc784
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Jisheng-Zhang/riscv-switch-to-relative-extable/20211017-001318
git checkout 23c273bf6ec4ca672a21dba701725087208dc784
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from kernel/futex.c:36:
In file included from include/linux/pagemap.h:11:
In file included from include/linux/highmem.h:10:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
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/little_endian.h:36:51: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from kernel/futex.c:36:
In file included from include/linux/pagemap.h:11:
In file included from include/linux/highmem.h:10:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
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/little_endian.h:34:51: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from kernel/futex.c:36:
In file included from include/linux/pagemap.h:11:
In file included from include/linux/highmem.h:10:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
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:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
~~~~~~~~~~ ^
In file included from kernel/futex.c:43:
>> arch/riscv/include/asm/futex.h:51:3: error: expected ')'
__futex_atomic_op("amoswap.w.aqrl %[ov],%z[op],%[u]",
^
arch/riscv/include/asm/futex.h:33:3: note: expanded from macro '__futex_atomic_op'
_ASM_EXTABLE(1b, 3b) \
^
arch/riscv/include/asm/futex.h:55:3: error: expected ')'
__futex_atomic_op("amoadd.w.aqrl %[ov],%z[op],%[u]",
^
arch/riscv/include/asm/futex.h:33:3: note: expanded from macro '__futex_atomic_op'
_ASM_EXTABLE(1b, 3b) \
^
arch/riscv/include/asm/futex.h:59:3: error: expected ')'
__futex_atomic_op("amoor.w.aqrl %[ov],%z[op],%[u]",
^
arch/riscv/include/asm/futex.h:33:3: note: expanded from macro '__futex_atomic_op'
_ASM_EXTABLE(1b, 3b) \
^
arch/riscv/include/asm/futex.h:63:3: error: expected ')'
__futex_atomic_op("amoand.w.aqrl %[ov],%z[op],%[u]",
^
arch/riscv/include/asm/futex.h:33:3: note: expanded from macro '__futex_atomic_op'
_ASM_EXTABLE(1b, 3b) \
^
arch/riscv/include/asm/futex.h:67:3: error: expected ')'
__futex_atomic_op("amoxor.w.aqrl %[ov],%z[op],%[u]",
^
arch/riscv/include/asm/futex.h:33:3: note: expanded from macro '__futex_atomic_op'
_ASM_EXTABLE(1b, 3b) \
^
arch/riscv/include/asm/futex.h:103:3: error: expected ')'
_ASM_EXTABLE(1b, 4b) \
^
7 warnings and 6 errors generated.
vim +51 arch/riscv/include/asm/futex.h
b90edb33010bcf Jim Wilson 2018-10-16 40
b90edb33010bcf Jim Wilson 2018-10-16 41 static inline int
b90edb33010bcf Jim Wilson 2018-10-16 42 arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
b90edb33010bcf Jim Wilson 2018-10-16 43 {
b90edb33010bcf Jim Wilson 2018-10-16 44 int oldval = 0, ret = 0;
b90edb33010bcf Jim Wilson 2018-10-16 45
a08971e9488d12 Al Viro 2020-02-16 46 if (!access_ok(uaddr, sizeof(u32)))
a08971e9488d12 Al Viro 2020-02-16 47 return -EFAULT;
b90edb33010bcf Jim Wilson 2018-10-16 48
b90edb33010bcf Jim Wilson 2018-10-16 49 switch (op) {
b90edb33010bcf Jim Wilson 2018-10-16 50 case FUTEX_OP_SET:
b90edb33010bcf Jim Wilson 2018-10-16 @51 __futex_atomic_op("amoswap.w.aqrl %[ov],%z[op],%[u]",
b90edb33010bcf Jim Wilson 2018-10-16 52 ret, oldval, uaddr, oparg);
b90edb33010bcf Jim Wilson 2018-10-16 53 break;
b90edb33010bcf Jim Wilson 2018-10-16 54 case FUTEX_OP_ADD:
b90edb33010bcf Jim Wilson 2018-10-16 55 __futex_atomic_op("amoadd.w.aqrl %[ov],%z[op],%[u]",
b90edb33010bcf Jim Wilson 2018-10-16 56 ret, oldval, uaddr, oparg);
b90edb33010bcf Jim Wilson 2018-10-16 57 break;
b90edb33010bcf Jim Wilson 2018-10-16 58 case FUTEX_OP_OR:
b90edb33010bcf Jim Wilson 2018-10-16 59 __futex_atomic_op("amoor.w.aqrl %[ov],%z[op],%[u]",
b90edb33010bcf Jim Wilson 2018-10-16 60 ret, oldval, uaddr, oparg);
b90edb33010bcf Jim Wilson 2018-10-16 61 break;
b90edb33010bcf Jim Wilson 2018-10-16 62 case FUTEX_OP_ANDN:
b90edb33010bcf Jim Wilson 2018-10-16 63 __futex_atomic_op("amoand.w.aqrl %[ov],%z[op],%[u]",
b90edb33010bcf Jim Wilson 2018-10-16 64 ret, oldval, uaddr, ~oparg);
b90edb33010bcf Jim Wilson 2018-10-16 65 break;
b90edb33010bcf Jim Wilson 2018-10-16 66 case FUTEX_OP_XOR:
b90edb33010bcf Jim Wilson 2018-10-16 67 __futex_atomic_op("amoxor.w.aqrl %[ov],%z[op],%[u]",
b90edb33010bcf Jim Wilson 2018-10-16 68 ret, oldval, uaddr, oparg);
b90edb33010bcf Jim Wilson 2018-10-16 69 break;
b90edb33010bcf Jim Wilson 2018-10-16 70 default:
b90edb33010bcf Jim Wilson 2018-10-16 71 ret = -ENOSYS;
b90edb33010bcf Jim Wilson 2018-10-16 72 }
b90edb33010bcf Jim Wilson 2018-10-16 73
b90edb33010bcf Jim Wilson 2018-10-16 74 if (!ret)
b90edb33010bcf Jim Wilson 2018-10-16 75 *oval = oldval;
b90edb33010bcf Jim Wilson 2018-10-16 76
b90edb33010bcf Jim Wilson 2018-10-16 77 return ret;
b90edb33010bcf Jim Wilson 2018-10-16 78 }
b90edb33010bcf Jim Wilson 2018-10-16 79
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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