RE: Build regressions/improvements in v5.17-rc1

-----Original Message-----
From: Geert Uytterhoeven <geert@linux-m68k.org>
Sent: Monday, January 24, 2022 1:26 PM
To: linux-kernel@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org; sparclinux@vger.kernel.org; linux-
um@lists.infradead.org; D, Lakshmi Sowjanya
[off-list ref]; kvm@vger.kernel.org; linux-
mips@vger.kernel.org; Tobin C. Harding [off-list ref]; alsa-devel@alsa-
project.org; amd-gfx@lists.freedesktop.org; netdev@vger.kernel.org
Subject: Re: Build regressions/improvements in v5.17-rc1

On Sun, 23 Jan 2022, Geert Uytterhoeven wrote:

quoted

Below is the list of build error/warning regressions/improvements in
v5.17-rc1[1] compared to v5.16[2].

Summarized:
 - build errors: +17/-2
 - build warnings: +23/-25

Note that there may be false regressions, as some logs are incomplete.
Still, they're build errors/warnings.

Happy fixing! ;-)

Thanks to the linux-next team for providing the build service.

[1]
http://kisskb.ellerman.id.au/kisskb/branch/linus/head/e783362eb54cd99b
2cac8b3a9aeac942e6f6ac07/ (all 99 configs) [2]
http://kisskb.ellerman.id.au/kisskb/branch/linus/head/df0cc57e057f18e4
4dac8e6c18aba47ab53202f9/ (98 out of 99 configs)


*** ERRORS ***

17 error regressions:
 + /kisskb/src/arch/powerpc/kernel/stacktrace.c: error: implicit
declaration of function 'nmi_cpu_backtrace'
[-Werror=implicit-function-declaration]:  => 171:2  +
/kisskb/src/arch/powerpc/kernel/stacktrace.c: error: implicit
declaration of function 'nmi_trigger_cpumask_backtrace'
[-Werror=implicit-function-declaration]:  => 226:2

powerpc-gcc5/skiroot_defconfig

quoted

 + /kisskb/src/arch/sparc/mm/srmmu.c: error: cast between incompatible
function types from 'void (*)(long unsigned int)' to 'void (*)(long
unsigned int,  long unsigned int,  long unsigned int,  long unsigned
int,  long unsigned int)' [-Werror=cast-function-type]:  => 1756:13,
1639:13  + /kisskb/src/arch/sparc/mm/srmmu.c: error: cast between
incompatible function types from 'void (*)(struct mm_struct *)' to
'void (*)(long unsigned int,  long unsigned int,  long unsigned int,
long unsigned int,  long unsigned int)' [-Werror=cast-function-type]:
=> 1674:29, 1662:29  + /kisskb/src/arch/sparc/mm/srmmu.c: error: cast
between incompatible function types from 'void (*)(struct mm_struct *,
long unsigned int)' to 'void (*)(long unsigned int,  long unsigned
int,  long unsigned int,  long unsigned int,  long unsigned int)'
[-Werror=cast-function-type]:  => 1767:21  +
/kisskb/src/arch/sparc/mm/srmmu.c: error: cast between incompatible
function types from 'void (*)(struct vm_area_struct *, long unsigned
int)' to 'void (*)(long unsigned int,  long unsigned int,  long
unsigned int,  long unsigned int,  long unsigned int)'
[-Werror=cast-function-type]:  => 1741:29, 1726:29  +
/kisskb/src/arch/sparc/mm/srmmu.c: error: cast between incompatible
function types from 'void (*)(struct vm_area_struct *, long unsigned
int,  long unsigned int)' to 'void (*)(long unsigned int,  long
unsigned int,  long unsigned int,  long unsigned int,  long unsigned
int)' [-Werror=cast-function-type]:  => 1694:29, 1711:29

sparc64-gcc11/sparc-allmodconfig

quoted

 + /kisskb/src/arch/um/include/asm/processor-generic.h: error: called
object is not a function or function pointer:  => 103:18  +
/kisskb/src/drivers/vfio/pci/vfio_pci_rdwr.c: error: assignment makes
pointer from integer without a cast [-Werror=int-conversion]:  =>
324:9, 317:9  + /kisskb/src/drivers/vfio/pci/vfio_pci_rdwr.c: error:
implicit declaration of function 'ioport_map'
[-Werror=implicit-function-declaration]:  => 317:11  +
/kisskb/src/drivers/vfio/pci/vfio_pci_rdwr.c: error: implicit
declaration of function 'ioport_unmap'
[-Werror=implicit-function-declaration]:  => 338:15

um-x86_64/um-allyesconfig

quoted

 + /kisskb/src/drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:
error: control reaches end of non-void function [-Werror=return-type]:
=> 1560:1

um-x86_64/um-all{mod,yes}config

quoted

 + /kisskb/src/drivers/net/ethernet/freescale/fec_mpc52xx.c: error:
passing argument 2 of 'mpc52xx_fec_set_paddr' discards 'const'
qualifier from pointer target type [-Werror=discarded-qualifiers]:  =>
659:29

powerpc-gcc5/ppc32_allmodconfig

quoted

 + /kisskb/src/drivers/pinctrl/pinctrl-thunderbay.c: error: assignment
discards 'const' qualifier from pointer target type
[-Werror=discarded-qualifiers]:  => 815:8, 815:29

arm64-gcc5.4/arm64-allmodconfig
arm64-gcc8/arm64-allmodconfig

These errors are fixed with the patch set by Rafał Miłecki: 
https://lore.kernel.org/all/CACRpkdYbR-hpLTcvN1_LuxEH_mgHLqDmopDqo1ddui9o8ZvSPQ@mail.gmail.com/t/ (local)

Regards,
Lakshmi Sowjanya

quoted

 + /kisskb/src/lib/test_printf.c: error: "PTR" redefined [-Werror]:
=> 247:0, 247  + /kisskb/src/sound/pci/ca0106/ca0106.h: error: "PTR"
redefined [-Werror]:  => 62, 62:0

mips-gcc8/mips-allmodconfig
mipsel/mips-allmodconfig

quoted

 + error: arch/powerpc/kvm/book3s_64_entry.o: relocation truncated to
fit: R_PPC64_REL14 (stub) against symbol `machine_check_common'
defined in .text section in arch/powerpc/kernel/head_64.o:  =>
(.text+0x3e4)

powerpc-gcc5/powerpc-allyesconfig

Gr{oetje,eeting}s,

 						Geert

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