netdev - Re: [PATCH net 1/4] net-sysfs: take the rtnl lock when storing xps

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Date:   Fri, 18 Dec 2020 17:11:28 +0100
From:   Antoine Tenart <atenart@...nel.org>
To:     davem@...emloft.net, kernel test robot <lkp@...el.com>,
        kuba@...nel.org
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        netdev@...r.kernel.org, pabeni@...hat.com
Subject: Re: [PATCH net 1/4] net-sysfs: take the rtnl lock when storing xps_cpus

That build issue seems unrelated to the patch. The series as a whole
builds fine according to the same report, and this code is not modified
by later patches.

It looks a lot like this report from yesterday:
https://www.spinics.net/lists/netdev/msg709132.html

Which also seemed unrelated to the changes:
https://www.spinics.net/lists/netdev/msg709264.html

Thanks!
Antoine

Quoting kernel test robot (2020-12-18 16:27:46)
> Hi Antoine,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on net/master]
> 
> url:    https://github.com/0day-ci/linux/commits/Antoine-Tenart/net-sysfs-fix-race-conditions-in-the-xps-code/20201218-002852
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git 3ae32c07815a24ae12de2e7838d9d429ba31e5e0
> 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://github.com/0day-ci/linux/commit/f989c3dcbe4d9abd1c6c48b34f08c6c0cd9d44b3
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Antoine-Tenart/net-sysfs-fix-race-conditions-in-the-xps-code/20201218-002852
>         git checkout f989c3dcbe4d9abd1c6c48b34f08c6c0cd9d44b3
>         # 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-review/Antoine-Tenart/net-sysfs-fix-race-conditions-in-the-xps-code/20201218-002852 HEAD 563d144b47845dea594b409ecf22914b9797cd1e builds fine.
>       It only hurts bisectibility.
> 
> All errors (new ones prefixed by >>):
> 
>    /tmp/ics932s401-422897.s: Assembler messages:
> >> /tmp/ics932s401-422897.s:260: Error: unrecognized opcode `zext.b a1,s11'
>    /tmp/ics932s401-422897.s:362: Error: unrecognized opcode `zext.b a1,s11'
>    /tmp/ics932s401-422897.s:518: Error: unrecognized opcode `zext.b a1,s11'
>    /tmp/ics932s401-422897.s:637: Error: unrecognized opcode `zext.b a1,s11'
>    /tmp/ics932s401-422897.s:774: Error: unrecognized opcode `zext.b a1,s11'
>    /tmp/ics932s401-422897.s:893: Error: unrecognized opcode `zext.b a1,s11'
>    /tmp/ics932s401-422897.s:1021: Error: unrecognized opcode `zext.b a1,s11'
> >> /tmp/ics932s401-422897.s:1180: Error: unrecognized opcode `zext.b a1,s2'
>    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