Build regressions/improvements in v6.0-rc1

[Geert Uytterhoeven]

On Mon, 15 Aug 2022, Geert Uytterhoeven wrote:
> Below is the list of build error/warning regressions/improvements in
> v6.0-rc1[1] compared to v5.19[2].
>
> Summarized:
>  - build errors: +26/-15

   + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: .cfi_endproc without corresponding .cfi_startproc:  => 32
   + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: bad or irreducible absolute expression:  => 16
   + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: junk at end of line, first unrecognized character is `:':  => 16
   + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: no such instruction: `be 0x100(%sr2,%r0)':  => 29
   + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: no such instruction: `ldi 0,%r20':  => 30
   + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: no such instruction: `ldw 0(%sp),%r31':  => 26
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: no such instruction: `ble 0x100(%sr2,%r0)':  => 51, 46
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: no such instruction: `ldi 0,%r25':  => 44
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: no such instruction: `ldi 1,%r25':  => 49
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: no such instruction: `ldi 173,%r20':  => 50, 45
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.callinfo':  => 40
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.entry':  => 41
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.exit':  => 54
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.proc':  => 39
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.procend':  => 55
   + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.stringz':  => 76

parisc64-gcc11/generic-64bit_defconfig
parisc-gcc11/generic-32bit_defconfig
parisc-gcc11/parisc-{allmod,allno,def}config

   + /kisskb/src/arch/sh/include/asm/io.h: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]:  => 239:34

sh4-gcc11/sh-allmodconfig (drivers/staging/octeon/ethernet-mem.c)

   + /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn30/display_mode_vba_30.c: error: the frame size of 2096 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]:  => 6806:1
   + /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c: error: the frame size of 2160 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]:  => 3778:1

x86_64-gcc8/x86-allmodconfig

   + /kisskb/src/include/linux/bitfield.h: error: call to '__field_overflow' declared with attribute error: value doesn't fit into mask:  => 151:3

mipsel-gcc5/mips-allmodconfig (net/mac80211/tx.c)

   + /kisskb/src/include/linux/compiler_types.h: error: call to '__compiletime_assert_603' declared with attribute error: FIELD_GET: mask is not constant:  => 354:38

arm64-gcc5/arm64-allmodconfig (arch/arm64/kvm/arm.c)

   + /kisskb/src/include/linux/random.h: error: 'latent_entropy' undeclared (first use in this function):  => 25:39

powerpc-gcc5/powerpc-all{mod,yes}config
powerpc-gcc5/ppc32_allmodconfig
powerpc-gcc5/ppc64_book3e_allmodconfig
powerpc-gcc5/ppc64le_allmodconfig

   + /kisskb/src/include/linux/random.h: error: 'latent_entropy' undeclared (first use in this function); did you mean 'add_latent_entropy'?:  => 25:46

powerpc-gcc11/powerpc-all{mod,yes}config
powerpc-gcc11/ppc64_book3e_allmodconfig

   + {standard input}: Error: displacement to undefined symbol .L377 overflows 12-bit field:  => 2286
   + {standard input}: Error: displacement to undefined symbol .L378 overflows 8-bit field :  => 2302
   + {standard input}: Error: displacement to undefined symbol .L382 overflows 8-bit field :  => 2213

sh4-gcc11/sh-allmodconfig (seen before, root cause is internal compiler error)

> [1] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/568035b01cfb107af8d2e4bd2fb9aea22cf5b868/ (all 135 configs)
> [2] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/3d7cb6b04c3f3115719235cc6866b10326de34cd/ (all 135 configs)

Gr{oetje,eeting}s,

 						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

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