RE: ERROR: modpost: vmlinux: local symbol 'dma_addressing_limited' was exported

[Justin He]

> -----Original Message-----
> From: kernel test robot <lkp@xxxxxxxxx>
> Sent: Wednesday, December 6, 2023 1:15 PM
> To: Justin He <Justin.He@xxxxxxx>
> Cc: oe-kbuild-all@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Christoph
> Hellwig <hch@xxxxxx>
> Subject: ERROR: modpost: vmlinux: local symbol 'dma_addressing_limited'
> was exported
[...]
> ERROR: modpost: vmlinux: local symbol 'dma_sync_single_for_device' was
> exported
> ERROR: modpost: vmlinux: local symbol 'dma_sync_sg_for_cpu' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_sync_sg_for_device' was
> exported
> ERROR: modpost: vmlinux: local symbol 'dma_get_sgtable_attrs' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_can_mmap' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_mmap_attrs' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_get_required_mask' was
> exported
> ERROR: modpost: vmlinux: local symbol 'dma_alloc_attrs' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_free_attrs' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_alloc_pages' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_free_pages' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_mmap_pages' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_alloc_noncontiguous' was
> exported
> ERROR: modpost: vmlinux: local symbol 'dma_free_noncontiguous' was
> exported
> ERROR: modpost: vmlinux: local symbol 'dma_vmap_noncontiguous' was
> exported
> ERROR: modpost: vmlinux: local symbol 'dma_vunmap_noncontiguous' was
> exported
> ERROR: modpost: vmlinux: local symbol 'dma_mmap_noncontiguous' was
> exported
> ERROR: modpost: vmlinux: local symbol 'dma_pci_p2pdma_supported' was
> exported
> ERROR: modpost: vmlinux: local symbol 'dma_set_mask' was exported
> ERROR: modpost: vmlinux: local symbol 'dma_set_coherent_mask' was
> exported
> >> ERROR: modpost: vmlinux: local symbol 'dma_addressing_limited' was
> >> exported
Since the dma_set_mask/ dma_set_coherent_mask was also in the error list, can I
consider it as a false positive warning?

Besides, I followed the reproducing instructions and got:
# nm build_dir/vmlinux |grep dma_addressing_limited
ffffffff81b2a974 r __crc_dma_addressing_limited
ffffffff8008ac36 T dma_addressing_limited
ffffffff81b330b5 r __kstrtab_dma_addressing_limited
ffffffff81b4e5f2 r __kstrtabns_dma_addressing_limited
ffffffff81b0aec0 r __ksymtab_dma_addressing_limited
Seems dma_addressing_limited is not a local symbol, is it?

--
Cheers,
Justin (Jia He)