linux-kernel - Re: ld.lld: error: Cannot export BSS symbol __inittext

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Message-ID: <aFC7JuM8FTyeKCv1@rli9-mobl>
Date: Tue, 17 Jun 2025 08:47:34 +0800
From: Philip Li <philip.li@...el.com>
To: Nathan Chancellor <nathan@...nel.org>
CC: kernel test robot <lkp@...el.com>, Ard Biesheuvel <ardb@...nel.org>,
	<llvm@...ts.linux.dev>, <oe-kbuild-all@...ts.linux.dev>,
	<linux-kernel@...r.kernel.org>, Will Deacon <will@...nel.org>
Subject: Re: ld.lld: error: Cannot export BSS symbol __inittext_end to
 startup code

On Mon, Jun 16, 2025 at 10:50:26AM -0700, Nathan Chancellor wrote:
> On Sun, Jun 15, 2025 at 06:13:33AM +0800, kernel test robot wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   8c6bc74c7f8910ed4c969ccec52e98716f98700a
> > commit: dc0a083948040ff364d065da8bb50c29f77a39ad arm64: Work around convergence issue with LLD linker
> > date:   12 days ago
> > config: arm64-randconfig-004-20250615 (https://download.01.org/0day-ci/archive/20250615/202506150602.qswx7ZzQ-lkp@intel.com/config)
> > compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
> > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250615/202506150602.qswx7ZzQ-lkp@intel.com/reproduce)
> > 
> > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > the same patch/commit), kindly add following tags
> > | Reported-by: kernel test robot <lkp@...el.com>
> > | Closes: https://lore.kernel.org/oe-kbuild-all/202506150602.qswx7ZzQ-lkp@intel.com/
> > 
> > All errors (new ones prefixed by >>):
> > 
> > >> ld.lld: error: Cannot export BSS symbol id_aa64isar1_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol id_aa64isar2_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol id_aa64mmfr0_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol id_aa64mmfr1_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol id_aa64mmfr2_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol id_aa64pfr0_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol id_aa64pfr1_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol id_aa64smfr0_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol id_aa64zfr0_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol arm64_sw_feature_override to startup code
> > >> ld.lld: error: Cannot export BSS symbol arm64_use_ng_mappings to startup code
> > >> ld.lld: error: Cannot export BSS symbol _ctype to startup code
> > >> ld.lld: error: Cannot export BSS symbol swapper_pg_dir to startup code
> > >> ld.lld: error: Cannot export BSS symbol _etext to startup code
> > >> ld.lld: error: Cannot export BSS symbol __start_rodata to startup code
> > >> ld.lld: error: Cannot export BSS symbol __inittext_begin to startup code
> > >> ld.lld: error: Cannot export BSS symbol __inittext_end to startup code
> > >> ld.lld: error: Cannot export BSS symbol __initdata_begin to startup code
> > >> ld.lld: error: Cannot export BSS symbol __initdata_end to startup code
> > >> ld.lld: error: Cannot export BSS symbol _data to startup code
> 
> This version of ld.lld is from early April, which does not contain
> Fangrui's fix [1], so this is expected given the stubbing out of ASSERT
> that Ard did in commit e21560b7d33c ("arm64: Disable LLD linker
> ASSERT()s for the time being") does not happen due to the version.
> Please upgrade to a newer version of LLVM main to avoid triggering this,

Thanks Nathan, i will follow up to upgrade the clang version to avoid
wrong report.

> I can confirm that I do not see an error with a current version.
> 
> [1]: https://github.com/llvm/llvm-project/commit/5859863bab7f
> 
> Cheers,
> Nathan
>