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

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Message-ID: <20250616175026.GA1187576@ax162>
Date: Mon, 16 Jun 2025 10:50:26 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: kernel test robot <lkp@...el.com>
Cc: 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 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,
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