Message ID | 20211017000443.4275747d@xhacker (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | riscv: switch to relative extable | expand |
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@intel.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
On Mon, 18 Oct 2021 08:14:28 +0800 kernel test robot <lkp@intel.com> wrote: > 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@intel.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); > ~~~~~~~~~~ ^ The warnings like this are not caused by this patch, they existed for a long time since NOMMU is supported. But no good solution so far. > 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) \ > ^ Errors like this are caused by my patch, I missed NOMMU. Fixed in V2. Thanks
diff --git a/arch/riscv/include/asm/futex.h b/arch/riscv/include/asm/futex.h index 1b00badb9f87..3191574e135c 100644 --- a/arch/riscv/include/asm/futex.h +++ b/arch/riscv/include/asm/futex.h @@ -30,10 +30,7 @@ "3: li %[r],%[e] \n" \ " jump 2b,%[t] \n" \ " .previous \n" \ - " .section __ex_table,\"a\" \n" \ - " .balign " RISCV_SZPTR " \n" \ - " " RISCV_PTR " 1b, 3b \n" \ - " .previous \n" \ + _ASM_EXTABLE(1b, 3b) \ : [r] "+r" (ret), [ov] "=&r" (oldval), \ [u] "+m" (*uaddr), [t] "=&r" (tmp) \ : [op] "Jr" (oparg), [e] "i" (-EFAULT) \ @@ -103,11 +100,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, "4: li %[r],%[e] \n" " jump 3b,%[t] \n" " .previous \n" - " .section __ex_table,\"a\" \n" - " .balign " RISCV_SZPTR " \n" - " " RISCV_PTR " 1b, 4b \n" - " " RISCV_PTR " 2b, 4b \n" - " .previous \n" + _ASM_EXTABLE(1b, 4b) \ + _ASM_EXTABLE(2b, 4b) \ : [r] "+r" (ret), [v] "=&r" (val), [u] "+m" (*uaddr), [t] "=&r" (tmp) : [ov] "Jr" (oldval), [nv] "Jr" (newval), [e] "i" (-EFAULT) : "memory"); diff --git a/arch/riscv/include/asm/uaccess.h b/arch/riscv/include/asm/uaccess.h index f314ff44c48d..5e4c9a5a17c5 100644 --- a/arch/riscv/include/asm/uaccess.h +++ b/arch/riscv/include/asm/uaccess.h @@ -47,6 +47,12 @@ likely(__access_ok((unsigned long __force)(addr), (size))); \ }) +#define _ASM_EXTABLE(from, to) \ + " .pushsection __ex_table, \"a\"\n" \ + " .balign " RISCV_SZPTR " \n" \ + " " RISCV_PTR "(" #from "), (" #to ")\n" \ + " .popsection\n" + /* * Ensure that the range [addr, addr+size) is within the process's * address space @@ -93,10 +99,7 @@ do { \ " li %1, 0\n" \ " jump 2b, %2\n" \ " .previous\n" \ - " .section __ex_table,\"a\"\n" \ - " .balign " RISCV_SZPTR "\n" \ - " " RISCV_PTR " 1b, 3b\n" \ - " .previous" \ + _ASM_EXTABLE(1b, 3b) \ : "+r" (err), "=&r" (__x), "=r" (__tmp) \ : "m" (*(ptr)), "i" (-EFAULT)); \ (x) = __x; \ @@ -125,11 +128,8 @@ do { \ " li %2, 0\n" \ " jump 3b, %3\n" \ " .previous\n" \ - " .section __ex_table,\"a\"\n" \ - " .balign " RISCV_SZPTR "\n" \ - " " RISCV_PTR " 1b, 4b\n" \ - " " RISCV_PTR " 2b, 4b\n" \ - " .previous" \ + _ASM_EXTABLE(1b, 4b) \ + _ASM_EXTABLE(2b, 4b) \ : "+r" (err), "=&r" (__lo), "=r" (__hi), \ "=r" (__tmp) \ : "m" (__ptr[__LSW]), "m" (__ptr[__MSW]), \ @@ -233,10 +233,7 @@ do { \ " li %0, %4\n" \ " jump 2b, %1\n" \ " .previous\n" \ - " .section __ex_table,\"a\"\n" \ - " .balign " RISCV_SZPTR "\n" \ - " " RISCV_PTR " 1b, 3b\n" \ - " .previous" \ + _ASM_EXTABLE(1b, 3b) \ : "+r" (err), "=r" (__tmp), "=m" (*(ptr)) \ : "rJ" (__x), "i" (-EFAULT)); \ } while (0) @@ -262,11 +259,8 @@ do { \ " li %0, %6\n" \ " jump 3b, %1\n" \ " .previous\n" \ - " .section __ex_table,\"a\"\n" \ - " .balign " RISCV_SZPTR "\n" \ - " " RISCV_PTR " 1b, 4b\n" \ - " " RISCV_PTR " 2b, 4b\n" \ - " .previous" \ + _ASM_EXTABLE(1b, 4b) \ + _ASM_EXTABLE(2b, 4b) \ : "+r" (err), "=r" (__tmp), \ "=m" (__ptr[__LSW]), \ "=m" (__ptr[__MSW]) \ @@ -417,10 +411,7 @@ unsigned long __must_check clear_user(void __user *to, unsigned long n) " li %[err], %[efault]\n" \ " jump 1b, %[rc]\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - ".balign " RISCV_SZPTR "\n" \ - " " RISCV_PTR " 1b, 2b\n" \ - ".previous\n" \ + _ASM_EXTABLE(1b, 2b) \ : [ret] "=&r" (__ret), \ [rc] "=&r" (__rc), \ [ptr] "+A" (*__ptr), \ @@ -443,10 +434,7 @@ unsigned long __must_check clear_user(void __user *to, unsigned long n) " li %[err], %[efault]\n" \ " jump 1b, %[rc]\n" \ ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - ".balign " RISCV_SZPTR "\n" \ - " " RISCV_PTR " 1b, 2b\n" \ - ".previous\n" \ + _ASM_EXTABLE(1b, 2b) \ : [ret] "=&r" (__ret), \ [rc] "=&r" (__rc), \ [ptr] "+A" (*__ptr), \