linux-kernel - Re: powerpc-linux-ld: warning: orphan section `.bss..Lubsan_data23' from `kernel/ptrace.o' being placed in section `.bss..Lubsan

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Date: Fri, 19 Apr 2024 22:42:18 +0300
From: Adrian Hunter <adrian.hunter@...el.com>
To: kernel test robot <lkp@...el.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
 Thomas Gleixner <tglx@...utronix.de>
Subject: Re: powerpc-linux-ld: warning: orphan section `.bss..Lubsan_data23'
 from `kernel/ptrace.o' being placed in section `.bss..Lubsan_data23'

On 19/04/24 01:22, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   2668e3ae2ef36d5e7c52f818ad7d90822c037de4
> commit: 5284984a4fbacb0883bfebe905902cdda2891a07 bug: Fix no-return-statement warning with !CONFIG_BUG
> date:   8 days ago
> config: powerpc-randconfig-r033-20211126 (https://download.01.org/0day-ci/archive/20240419/202404190642.z54cLsGE-lkp@intel.com/config)
> compiler: powerpc-linux-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240419/202404190642.z54cLsGE-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/202404190642.z54cLsGE-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
>>> powerpc-linux-ld: warning: orphan section `.bss..Lubsan_data23' from `kernel/ptrace.o' being placed in section `.bss..Lubsan_data23'
>    powerpc-linux-ld: warning: orphan section `.bss..Lubsan_data18' from `drivers/cxl/core/port.o' being placed in section `.bss..Lubsan_data18'
>>> powerpc-linux-ld: warning: orphan section `.bss..Lubsan_data23' from `kernel/ptrace.o' being placed in section `.bss..Lubsan_data23'
>    powerpc-linux-ld: warning: orphan section `.bss..Lubsan_data18' from `drivers/cxl/core/port.o' being placed in section `.bss..Lubsan_data18'
>>> powerpc-linux-ld: warning: orphan section `.bss..Lubsan_data23' from `kernel/ptrace.o' being placed in section `.bss..Lubsan_data23'
>    powerpc-linux-ld: warning: orphan section `.bss..Lubsan_data18' from `drivers/cxl/core/port.o' being placed in section `.bss..Lubsan_data18'
> 

The same warnings are visible in v6.8 that does not
contain commit 5284984a4fbacb0883bfebe905902cdda2891a07
so this is not due to that commit.