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Date:   Sat, 19 Dec 2020 18:40:06 +0800
From:   Philip Li <philip.li@...el.com>
To:     Pavel Machek <pavel@....cz>
Cc:     kernel test robot <lkp@...el.com>,
        kernel list <linux-kernel@...r.kernel.org>,
        Zheng Yongjun <zhengyongjun3@...wei.com>,
        kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [kbuild-all] Re: [linux-next:master 13538/13785]
 /tmp/metronomefb-846872.s:300: Error: unrecognized opcode `zext.b a2,a2'

On Sat, Dec 19, 2020 at 06:28:20PM +0800, Philip Li wrote:
> On Sat, Dec 19, 2020 at 08:56:06AM +0100, Pavel Machek wrote:
> > Crazy robot, stop spamming. This report is obviously bogus, yet, you
> > sent me 5 copies.
> Thanks Pavel for input, sorry for the false positive. It tries to
> bisect error like below (the new error), but it may be related to
> assember support. We will adjust the system to not report this out
> wrongly. Kindly allow some time for us to resolving this.
> 
> > > >> /tmp/metronomefb-846872.s:300: Error: unrecognized opcode `zext.b a2,a2'
> 
> Thanks
> 
> > 
> > Whoever is responsible for this, please sign emails with your real
> > name!
This is Philip who maintains the 0-day ci, and lkp@...el.com is the
mailing list for the team here to be contacted.

> > 
> > 								Pavel
> > 
> > 
> > On Sat 2020-12-19 14:19:16, kernel test robot wrote:
> > > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> > > head:   0d52778b8710eb11cb616761a02aee0a7fd60425
> > > commit: f08fdc654a5940aa23259e1ed53ab0f401ca7068 [13538/13785] leds: ss4200: simplify the return expression of register_nasgpio_led()
> > > config: riscv-randconfig-r014-20201217 (attached as .config)
> > > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45)
> > > 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/next/linux-next.git/commit/?id=f08fdc654a5940aa23259e1ed53ab0f401ca7068
> > >         git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> > >         git fetch --no-tags linux-next master
> > >         git checkout f08fdc654a5940aa23259e1ed53ab0f401ca7068
> > >         # save the attached .config to linux build tree
> > >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 
> > > 
> > > If you fix the issue, kindly add following tag as appropriate
> > > Reported-by: kernel test robot <lkp@...el.com>
> > > 
> > > Note: the linux-next/master HEAD 0d52778b8710eb11cb616761a02aee0a7fd60425 builds fine.
> > >       It may have been fixed somewhere.
> > > 
> > > All errors (new ones prefixed by >>):
> > > 
> > >    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:564:9: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
> > >            return inw(addr);
> > >                   ^~~~~~~~~
> > >    arch/riscv/include/asm/io.h:56:76: note: expanded from macro 'inw'
> > >    #define inw(c)          ({ u16 __v; __io_pbr(); __v = readw_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
> > >                                                                            ~~~~~~~~~~ ^
> > >    arch/riscv/include/asm/mmio.h:88:76: note: expanded from macro 'readw_cpu'
> > >    #define readw_cpu(c)            ({ u16 __r = le16_to_cpu((__force __le16)__raw_readw(c)); __r; })
> > >                                                                                         ^
> > >    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 drivers/video/fbdev/metronomefb.c:28:
> > >    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 drivers/video/fbdev/metronomefb.c:28:
> > >    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 drivers/video/fbdev/metronomefb.c:28:
> > >    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 drivers/video/fbdev/metronomefb.c:28:
> > >    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 drivers/video/fbdev/metronomefb.c:28:
> > >    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;
> > >                                                      ~~~~~~~~~~ ^
> > >    7 warnings generated.
> > >    /tmp/metronomefb-846872.s: Assembler messages:
> > > >> /tmp/metronomefb-846872.s:300: Error: unrecognized opcode `zext.b a2,a2'
> > > >> /tmp/metronomefb-846872.s:313: Error: unrecognized opcode `zext.b a5,a6'
> > > >> /tmp/metronomefb-846872.s:350: Error: unrecognized opcode `zext.b a3,a3'
> > > >> /tmp/metronomefb-846872.s:371: Error: unrecognized opcode `zext.b a4,a4'
> > >    /tmp/metronomefb-846872.s:409: Error: unrecognized opcode `zext.b a2,a2'
> > > >> /tmp/metronomefb-846872.s:433: Error: unrecognized opcode `zext.b s1,t1'
> > > >> /tmp/metronomefb-846872.s:521: Error: unrecognized opcode `zext.b a1,a1'
> > >    clang-12: error: assembler command failed with exit code 1 (use -v to see invocation)
> > > 
> > > ---
> > > 0-DAY CI Kernel Test Service, Intel Corporation
> > > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
> > 
> > 
> > 
> > -- 
> > http://www.livejournal.com/~pavelmachek
> 
> 
> 
> > _______________________________________________
> > kbuild-all mailing list -- kbuild-all@...ts.01.org
> > To unsubscribe send an email to kbuild-all-leave@...ts.01.org
> 

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