From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ustc.edu.cn (smtp2.ustc.edu.cn [202.38.64.46]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5D4642C81 for ; Wed, 20 Oct 2021 14:17:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mail.ustc.edu.cn; s=dkim; h=Received:Date:From:To:Cc:Subject: Message-ID:In-Reply-To:References:MIME-Version:Content-Type: Content-Transfer-Encoding; bh=RJ2zK4UbE9ZurSC5Jh9RSNIdHcuuXmTemL ElGthoHDk=; b=Ro1Lo5Gq0UKtvLrFpUly5yyvlsfTDqk0aaaQRc1euRF+5oi3dO l2HRx+2rKlXnzxU3O7oAPRXXd/rMJCEDO+BlA8+OsGXhM/rmVURnO8SFM+mGNxlD VDfzcvKa7Q4LQKASDkiIj570PDYmhJ7TmfPHM5hPTiPru+h9DMGVhOQ9g= Received: from xhacker (unknown [101.86.20.138]) by newmailweb.ustc.edu.cn (Coremail) with SMTP id LkAmygAXHwdAI3BhuIRUAA--.29650S2; Wed, 20 Oct 2021 22:10:09 +0800 (CST) Date: Wed, 20 Oct 2021 22:03:19 +0800 From: Jisheng Zhang To: kernel test robot Cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , Masahiro Yamada , Michal Marek , Nick Desaulniers , llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org Subject: Re: [PATCH 1/2] riscv: consolidate __ex_table construction Message-ID: <20211020220319.41ad167f@xhacker> In-Reply-To: <202110180820.HH9NB6vw-lkp@intel.com> References: <20211017000443.4275747d@xhacker> <202110180820.HH9NB6vw-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-CM-TRANSID:LkAmygAXHwdAI3BhuIRUAA--.29650S2 X-Coremail-Antispam: 1UD129KBjvJXoW3Ww48tw1DCr13AFW7uryDKFg_yoW7tw1DpF 4Dury0q3yrXr4UCw4qk3ZFy34Utw45G342vry5Ww12v3W3tFy8Jw1DurZxKr1v9r4v9ay0 gr47JasYgryUXaUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUkvb7Iv0xC_Kw4lb4IE77IF4wAFF20E14v26r4j6ryUM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rw A2F7IY1VAKz4vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xII jxv20xvEc7CjxVAFwI0_Cr0_Gr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I 8E87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI 64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8Jw Am72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IY64vIr41lFIxGxcIEc7CjxVA2Y2ka0xkIwI1l 42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJV WUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAK I48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F 4UMIIF0xvE42xK8VAvwI8IcIk0rVWrZr1j6s0DMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF 0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x07beAp5UUUUU= X-CM-SenderInfo: xmv2xttqjtqzxdloh3xvwfhvlgxou0/ On Mon, 18 Oct 2021 08:14:28 +0800 kernel test robot 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 > > 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