Re: [linux-next:master 3442/4242] WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1270 (section: __ex_table) -> .LASF0 (section: .debug_str)

Re: [linux-next:master 3442/4242] WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1270 (section: __ex_table) -> .LASF0 (section: .debug_str)

[Peter Xu]

On Mon, Apr 08, 2024 at 12:53:19PM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   8568bb2ccc278f344e6ac44af6ed010a90aa88dc
> commit: e79da3a55e4e7b60b2790b3402a1a6c19829e9ce [3442/4242] mm/gup: merge pXd huge mapping checks
> config: riscv-buildonly-randconfig-r001-20230517 (https://download.01.org/0day-ci/archive/20240408/202404081248.FE1RbA1V-lkp@intel.com/config)
> compiler: riscv32-linux-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240408/202404081248.FE1RbA1V-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@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202404081248.FE1RbA1V-lkp@intel.com/

[...]

> ERROR: modpost: __ex_table+0x1258 references non-executable section '.rodata.str1.4'
> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1260 (section: __ex_table) -> .LASF3592 (section: .debug_str)
> ERROR: modpost: __ex_table+0x1260 references non-executable section '.debug_str'
> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1264 (section: __ex_table) -> .LC59 (section: .rodata.str1.4)
> ERROR: modpost: __ex_table+0x1264 references non-executable section '.rodata.str1.4'
> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x126c (section: __ex_table) -> .Ldebug_ranges0 (section: .debug_ranges)
> ERROR: modpost: __ex_table+0x126c references non-executable section '.debug_ranges'
> >> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1270 (section: __ex_table) -> .LASF0 (section: .debug_str)
> ERROR: modpost: __ex_table+0x1270 references non-executable section '.debug_str'
> >> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1278 (section: __ex_table) -> .LASF2 (section: .debug_str)
> ERROR: modpost: __ex_table+0x1278 references non-executable section '.debug_str'
> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x127c (section: __ex_table) -> .LASF0 (section: .debug_str)
> ERROR: modpost: __ex_table+0x127c references non-executable section '.debug_str'
> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1284 (section: __ex_table) -> .LASF6 (section: .debug_str)
> ERROR: modpost: __ex_table+0x1284 references non-executable section '.debug_str'
> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1288 (section: __ex_table) -> .LASF7 (section: .debug_str)

[...]

Hmm, this doesn't look like relevant to the small commit e79da3a55e4e7b..
I'd guess this is an irrelevant error with the randconfig which lacks some
sheer luck.  I'll ignore this one as of now, but anyone can correct me
otherwise..

-- 
Peter Xu

Re: [linux-next:master 3442/4242] WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1270 (section: __ex_table) -> .LASF0 (section: .debug_str)

[Yujie Liu]

On Mon, Apr 08, 2024 at 12:32:11PM -0400, Peter Xu wrote:
> On Mon, Apr 08, 2024 at 12:53:19PM +0800, kernel test robot wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> > head:   8568bb2ccc278f344e6ac44af6ed010a90aa88dc
> > commit: e79da3a55e4e7b60b2790b3402a1a6c19829e9ce [3442/4242] mm/gup: merge pXd huge mapping checks
> > config: riscv-buildonly-randconfig-r001-20230517 (https://download.01.org/0day-ci/archive/20240408/202404081248.FE1RbA1V-lkp@intel.com/config)
> > compiler: riscv32-linux-gcc (GCC) 13.2.0
> > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240408/202404081248.FE1RbA1V-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@intel.com>
> > | Closes: https://lore.kernel.org/oe-kbuild-all/202404081248.FE1RbA1V-lkp@intel.com/
> 
> [...]
> 
> > ERROR: modpost: __ex_table+0x1258 references non-executable section '.rodata.str1.4'
> > WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1260 (section: __ex_table) -> .LASF3592 (section: .debug_str)
> > ERROR: modpost: __ex_table+0x1260 references non-executable section '.debug_str'
> > WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1264 (section: __ex_table) -> .LC59 (section: .rodata.str1.4)
> > ERROR: modpost: __ex_table+0x1264 references non-executable section '.rodata.str1.4'
> > WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x126c (section: __ex_table) -> .Ldebug_ranges0 (section: .debug_ranges)
> > ERROR: modpost: __ex_table+0x126c references non-executable section '.debug_ranges'
> > >> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1270 (section: __ex_table) -> .LASF0 (section: .debug_str)
> > ERROR: modpost: __ex_table+0x1270 references non-executable section '.debug_str'
> > >> WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1278 (section: __ex_table) -> .LASF2 (section: .debug_str)
> > ERROR: modpost: __ex_table+0x1278 references non-executable section '.debug_str'
> > WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x127c (section: __ex_table) -> .LASF0 (section: .debug_str)
> > ERROR: modpost: __ex_table+0x127c references non-executable section '.debug_str'
> > WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1284 (section: __ex_table) -> .LASF6 (section: .debug_str)
> > ERROR: modpost: __ex_table+0x1284 references non-executable section '.debug_str'
> > WARNING: modpost: vmlinux: section mismatch in reference: (unknown)+0x1288 (section: __ex_table) -> .LASF7 (section: .debug_str)
> 
> [...]
> 
> Hmm, this doesn't look like relevant to the small commit e79da3a55e4e7b..
> I'd guess this is an irrelevant error with the randconfig which lacks some
> sheer luck.  I'll ignore this one as of now, but anyone can correct me
> otherwise..

Sorry for the false report. The bot wrongly parsed the modpost warnings
and triggered wrong bisections. We will fix this bug as soon as possible.

Thanks,
Yujie