Re: Build regressions/improvements in v6.5-rc3

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On Mon, 24 Jul 2023, Geert Uytterhoeven wrote:
JFYI, when comparing v6.5-rc3[1] to v6.5-rc2[3], the summaries are:
 - build errors: +5/-0

  + /kisskb/src/include/linux/fortify-string.h: error: call to '__write_overflow_field' declared with attribute warning: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror=attribute-warning]:  => 583:25, 493:25

mips-gcc13/mips-allmodconfig

Full context:

    In function 'fortify_memset_chk',
	inlined from 'memset_io' at /kisskb/src/arch/mips/include/asm/io.h:486:2,
	inlined from 'build_auth_frame' at /kisskb/src/drivers/net/wireless/legacy/ray_cs.c:2697:2:
    /kisskb/src/include/linux/fortify-string.h:493:25: error: call to '__write_overflow_field' declared with attribute warning: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror=attribute-warning]
      493 |                         __write_overflow_field(p_size_field, size);
	  |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    In function 'fortify_memcpy_chk',
	inlined from 'memcpy_toio' at /kisskb/src/arch/mips/include/asm/io.h:494:2,
	inlined from 'translate_frame' at /kisskb/src/drivers/net/wireless/legacy/ray_cs.c:955:3,
	inlined from 'ray_hw_xmit.constprop' at /kisskb/src/drivers/net/wireless/legacy/ray_cs.c:912:12:
    /kisskb/src/include/linux/fortify-string.h:583:25: error: call to '__write_overflow_field' declared with attribute warning: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror=attribute-warning]
      583 |                         __write_overflow_field(p_size_field, size);
	  |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Single-element flexible array abuse in drivers/net/wireless/legacy/rayctl.h:tx_msg.var

  + error: modpost: ".L856" [drivers/mtd/nand/raw/nand.ko] undefined!:  => N/A

parisc-gcc13/parisc-allmodconfig

  + {standard input}: Error: Missing symbol name in directive:  => 1096
  + {standard input}: Error: unrecognized symbol type "":  => 1096

sh4-gcc12/sh-allmodconfig (ICE)

  + {standard input}: Error: unknown opcode:  => 1091

sh4-gcc13/sh-allmodconfig (ICE)

[1] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/6eaae198076080886b9e7d57f4ae06fa782f90ef/ (all 235 configs)
[3] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/fdf0eaf11452d72945af31804e2a1048ee1b574c/ (161 out of 235 configs)

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds



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