linux-kernel - Re: [PATCH 2/7] kexec_file: print out debugging message if required

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Date:   Fri, 24 Nov 2023 09:18:28 +0800
From:   Yujie Liu <yujie.liu@...el.com>
To:     "bhe@...hat.com" <bhe@...hat.com>
CC:     lkp <lkp@...el.com>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "kexec@...ts.infradead.org" <kexec@...ts.infradead.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "oe-kbuild-all@...ts.linux.dev" <oe-kbuild-all@...ts.linux.dev>,
        "llvm@...ts.linux.dev" <llvm@...ts.linux.dev>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH 2/7] kexec_file: print out debugging message if required

On Thu, Nov 23, 2023 at 09:49:20PM +0800, bhe@...hat.com wrote:
> On 11/17/23 at 10:01pm, Baoquan He wrote:
> > On 11/17/23 at 09:37am, Liu, Yujie wrote:
> > > Hi Baoquan,
> > > 
> > > On Fri, 2023-11-17 at 17:14 +0800, Baoquan He wrote:
> > > > Hi,
> > > > 
> > > > On 11/16/23 at 05:04am, kernel test robot wrote:
> > > > > Hi Baoquan,
> > > > > 
> > > > > kernel test robot noticed the following build errors:
> > > > > 
> > > > > [auto build test ERROR on arm64/for-next/core]
> > > > > [also build test ERROR on tip/x86/core powerpc/next powerpc/fixes linus/master v6.7-rc1 next-20231115]
> > > > > [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#_base_tree_information]
> > > > > 
> > > > > url:    https://github.com/intel-lab-lkp/linux/commits/Baoquan-He/kexec_file-add-kexec_file-flag-to-control-debug-printing/20231114-234003
> > > > > base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
> > > > > patch link:    https://lore.kernel.org/r/20231114153253.241262-3-bhe%40redhat.com
> > > > > patch subject: [PATCH 2/7] kexec_file: print out debugging message if required
> > > > > config: hexagon-comet_defconfig (https://download.01.org/0day-ci/archive/20231116/202311160431.BXPc7NO9-lkp@intel.com/config)
> > > > > compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
> > > > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231116/202311160431.BXPc7NO9-lkp@intel.com/reproduce)
> > > > > 
> > > > 
> > > > Thanks for reporting.
> > > > 
> > > > I met below failure when following the steps of provided reproducer.
> > > > Could anyone help check what's wrong with that?
> > > 
> > > Sorry this seems to be a bug in the reproducer. Could you please change
> > > the compiler parameter to "COMPILER=clang-16" and rerun the command? We
> > > will fix the issue ASAP.
> 
> Any update for the reproducer? I would like to post v2 with the fix. I
> doubt it's the same issue as another report on this patch, while not
> quite sure.

Setting "COMPILER=clang-16" is exactly the correct fix and should
reproduce the issue in this report. We've fixed the steps of reproducer
but this will only take effect in future reports.

Thanks,
Yujie

> > 
> > Here you are. Thanks for your quick response.
> > ------------------------------
> > [root@~ linux]# COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-16 ~/bin/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
> > Compiler will be installed in /root/0day
> > lftpget -c https://cdn.kernel.org/pub/tools/llvm/files/./llvm-16.0.6-x86_64.tar.xz
> > /root/linux                                                                             
> > tar Jxf /root/0day/./llvm-16.0.6-x86_64.tar.xz -C /root/0day
> > PATH=/root/0day/llvm-16.0.6-x86_64/bin:/root/.local/bin:/root/bin:/usr/lib64/ccache:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
> > make --keep-going LLVM=1 CROSS_COMPILE=hexagon-linux- LLVM_IAS=1 --jobs=128 KCFLAGS=-Warray-bounds -Wundef -fstrict-flex-arrays=3 -funsigned-char -Wenum-conversion W=1 O=build_dir ARCH=hexagon olddefconfig
> > make[1]: Entering directory '/root/linux/build_dir'
> >   GEN     Makefile
> >   HOSTCC  scripts/basic/fixdep
> >   HOSTCC  scripts/kconfig/conf.o
> >   HOSTCC  scripts/kconfig/confdata.o
> >   HOSTCC  scripts/kconfig/expr.o
> >   HOSTCC  scripts/kconfig/lexer.lex.o
> >   HOSTCC  scripts/kconfig/menu.o
> >   HOSTCC  scripts/kconfig/parser.tab.o
> >   HOSTCC  scripts/kconfig/preprocess.o
> >   HOSTCC  scripts/kconfig/symbol.o
> >   HOSTCC  scripts/kconfig/util.o
> >   HOSTLD  scripts/kconfig/conf
> > #
> > # configuration written to .config
> > #
> > make[1]: Leaving directory '/root/linux/build_dir'
> > 
> > > 
> > > > [root@~ linux]# COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
> > > > Compiler will be installed in /root/0day
> > > > lftpget -c https://cdn.kernel.org/pub/tools/llvm/files/
> > > > get1: /pub/tools/llvm/files/: files/: Is a directory
> > > > Failed to download https://cdn.kernel.org/pub/tools/llvm/files/
> > > > clang crosstool install failed
> > > > Install clang compiler failed
> > > > setup_crosstool failed
> > > 
> > > 
> > 
>