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Sun, 16 May 2021 19:10:02 +0000 Subject: Re: arch/riscv/kernel/probes/kprobes.c:90:22: error: use of undeclared identifier 'PAGE_KERNEL_READ_EXEC' To: kernel test robot , Jisheng Zhang Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com, linux-kernel@vger.kernel.org, Palmer Dabbelt References: <202105070646.RiY8StjM-lkp@intel.com> From: Randy Dunlap Message-ID: <22c9edf5-1112-40e4-bd61-ad8ddf2d4732@infradead.org> Date: Sun, 16 May 2021 12:10:01 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <202105070646.RiY8StjM-lkp@intel.com> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/6/21 3:11 PM, kernel test robot wrote: > Hi Jisheng, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 38182162b50aa4e970e5997df0a0c4288147a153 > commit: cdd1b2bd358ffda2638fe18ff47191e84e18525f riscv: kprobes: Implement alloc_insn_page() > date: 10 days ago > config: riscv-randconfig-r006-20210506 (attached as .config) > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8f5a2a5836cc8e4c1def2bdeb022e7b496623439) > 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cdd1b2bd358ffda2638fe18ff47191e84e18525f > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout cdd1b2bd358ffda2638fe18ff47191e84e18525f > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot > > All errors (new ones prefixed by >>): > > 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 arch/riscv/kernel/probes/kprobes.c:3: > In file included from include/linux/kprobes.h:29: > In file included from include/linux/ftrace.h:10: > In file included from include/linux/trace_recursion.h:5: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > 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:149: > include/asm-generic/io.h:572:9: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > return inl(addr); > ^~~~~~~~~ > arch/riscv/include/asm/io.h:57:76: note: expanded from macro 'inl' > #define inl(c) ({ u32 __v; __io_pbr(); __v = readl_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; }) > ~~~~~~~~~~ ^ > arch/riscv/include/asm/mmio.h:89:76: note: expanded from macro 'readl_cpu' > #define readl_cpu(c) ({ u32 __r = le32_to_cpu((__force __le32)__raw_readl(c)); __r; }) > ^ > 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 arch/riscv/kernel/probes/kprobes.c:3: > In file included from include/linux/kprobes.h:29: > In file included from include/linux/ftrace.h:10: > In file included from include/linux/trace_recursion.h:5: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > 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:149: > include/asm-generic/io.h:580:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > outb(value, addr); > ^~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/io.h:59:68: note: expanded from macro 'outb' > #define outb(v,c) ({ __io_pbw(); writeb_cpu((v),(void*)(PCI_IOBASE + (c))); __io_paw(); }) > ~~~~~~~~~~ ^ > arch/riscv/include/asm/mmio.h:91:52: note: expanded from macro 'writeb_cpu' > #define writeb_cpu(v, c) ((void)__raw_writeb((v), (c))) > ^ > In file included from arch/riscv/kernel/probes/kprobes.c:3: > In file included from include/linux/kprobes.h:29: > In file included from include/linux/ftrace.h:10: > In file included from include/linux/trace_recursion.h:5: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > 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:149: > include/asm-generic/io.h:588:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > outw(value, addr); > ^~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/io.h:60:68: note: expanded from macro 'outw' > #define outw(v,c) ({ __io_pbw(); writew_cpu((v),(void*)(PCI_IOBASE + (c))); __io_paw(); }) > ~~~~~~~~~~ ^ > arch/riscv/include/asm/mmio.h:92:76: note: expanded from macro 'writew_cpu' > #define writew_cpu(v, c) ((void)__raw_writew((__force u16)cpu_to_le16(v), (c))) > ^ > In file included from arch/riscv/kernel/probes/kprobes.c:3: > In file included from include/linux/kprobes.h:29: > In file included from include/linux/ftrace.h:10: > In file included from include/linux/trace_recursion.h:5: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > 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:149: > include/asm-generic/io.h:596:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > outl(value, addr); > ^~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/io.h:61:68: note: expanded from macro 'outl' > #define outl(v,c) ({ __io_pbw(); writel_cpu((v),(void*)(PCI_IOBASE + (c))); __io_paw(); }) > ~~~~~~~~~~ ^ > arch/riscv/include/asm/mmio.h:93:76: note: expanded from macro 'writel_cpu' > #define writel_cpu(v, c) ((void)__raw_writel((__force u32)cpu_to_le32(v), (c))) > ^ > In file included from arch/riscv/kernel/probes/kprobes.c:3: > In file included from include/linux/kprobes.h:29: > In file included from include/linux/ftrace.h:10: > In file included from include/linux/trace_recursion.h:5: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > 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:149: > include/asm-generic/io.h:1005:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; > ~~~~~~~~~~ ^ >>> arch/riscv/kernel/probes/kprobes.c:90:22: error: use of undeclared identifier 'PAGE_KERNEL_READ_EXEC' > GFP_KERNEL, PAGE_KERNEL_READ_EXEC, > ^ > 7 warnings and 1 error generated. > > > vim +/PAGE_KERNEL_READ_EXEC +90 arch/riscv/kernel/probes/kprobes.c > > 86 > 87 void *alloc_insn_page(void) > 88 { > 89 return __vmalloc_node_range(PAGE_SIZE, 1, VMALLOC_START, VMALLOC_END, > > 90 GFP_KERNEL, PAGE_KERNEL_READ_EXEC, > 91 VM_FLUSH_RESET_PERMS, NUMA_NO_NODE, > 92 __builtin_return_address(0)); > 93 } > 94 > > --- >>> arch/riscv/kernel/probes/kprobes.c:90:22: error: use of undeclared identifier 'PAGE_KERNEL_READ_EXEC' > GFP_KERNEL, PAGE_KERNEL_READ_EXEC, is due to # CONFIG_MMU is not set -- ~Randy