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SubjectRe: Build regressions/improvements in v5.18-rc1
On Mon, 4 Apr 2022, Geert Uytterhoeven wrote:
> Below is the list of build error/warning regressions/improvements in
> v5.18-rc1[1] compared to v5.17[2].
>
> Summarized:
> - build errors: +36/-15
> - build warnings: +5/-38
>
> Happy fixing! ;-)
>
> Thanks to the linux-next team for providing the build service.
>
> [1] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/3123109284176b1532874591f7c81f3837bbdc17/ (all 96 configs)
> [2] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/f443e374ae131c168a065ea1748feac6b2e76613/ (all 96 configs)
>
>
> *** ERRORS ***
>
> 36 error regressions:
> + /kisskb/src/arch/m68k/include/asm/bitops.h: error: array subscript 2 is above array bounds of 'long unsigned int[1]' [-Werror=array-bounds]: => 329:20

m68k-gcc8/m68k-allmodconfig (assumed gcc8 bug)

> + /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': => 45, 50
> + /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-gcc8/generic-64bit_defconfig
parisc-gcc8/generic-32bit_defconfig
parisc-gcc8/parisc-allmodconfig
parisc-gcc8/parisc-allnoconfig

> + /kisskb/src/arch/sparc/kernel/irq_32.c: error: array subscript [16, 79] is outside array bounds of 'struct tt_entry[1]' [-Werror=array-bounds]: => 262:14, 261:46, 259:14, 258:14, 263:14

sparc64-gcc11/sparc-allmodconfig

> + /kisskb/src/drivers/gpu/drm/r128/r128_cce.c: error: case label does not reduce to an integer constant: => 417:2, 418:2

arm64-gcc5.4/arm64-allmodconfig
mipsel/mips-allmodconfig
powerpc-gcc5/powerpc-allmodconfig
powerpc-gcc5/powerpc-allyesconfig
powerpc-gcc5/ppc32_allmodconfig
powerpc-gcc5/ppc64_book3e_allmodconfig
powerpc-gcc5/ppc64le_allmodconfig

> + /kisskb/src/drivers/infiniband/hw/qib/qib_wc_x86_64.c: error: 'X86_VENDOR_AMD' undeclared (first use in this function): => 149:37
> + /kisskb/src/drivers/infiniband/hw/qib/qib_wc_x86_64.c: error: 'struct cpuinfo_um' has no member named 'x86_vendor': => 149:22
> + /kisskb/src/drivers/infiniband/hw/qib/qib_wc_x86_64.c: error: control reaches end of non-void function [-Werror=return-type]: => 150:1
> + /kisskb/src/drivers/infiniband/sw/rdmavt/qp.c: error: 'struct cpuinfo_um' has no member named 'x86_cache_size': => 88:22
> + /kisskb/src/drivers/infiniband/sw/rdmavt/qp.c: error: control reaches end of non-void function [-Werror=return-type]: => 89:1
> + /kisskb/src/drivers/infiniband/sw/rdmavt/qp.c: error: implicit declaration of function '__copy_user_nocache' [-Werror=implicit-function-declaration]: => 100:2

um-x86_64/um-allmodconfig
um-x86_64/um-allyesconfig

> + /kisskb/src/drivers/media/platform/nxp/imx-pxp.h: error: initializer element is not constant: => 582:38

arm64-gcc5.4/arm64-allmodconfig
powerpc-gcc5/powerpc-allmodconfig

> + /kisskb/src/drivers/misc/habanalabs/common/memory.c: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]: => 153:49, 153:7

mipsel/mips-allmodconfig
mips-gcc8/mips-allmodconfig
sparc64/sparc-allmodconfig
xtensa-gcc11/xtensa-allmodconfig

> + /kisskb/src/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c: error: case label does not reduce to an integer constant: => 4917:4
> + /kisskb/src/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c: error: case label does not reduce to an integer constant: => 3798:2, 3809:2

arm64-gcc5.4/arm64-allmodconfig
powerpc-gcc5/powerpc-allmodconfig
powerpc-gcc5/ppc64_book3e_allmodconfig

> + /kisskb/src/drivers/scsi/aacraid/commsup.c: error: case label does not reduce to an integer constant: => 1983:2

arm64-gcc5.4/arm64-allmodconfig
powerpc-gcc5/powerpc-allmodconfig
powerpc-gcc5/ppc64_book3e_allmodconfig
powerpc-gcc5/ppc64le_allmodconfig

> + /kisskb/src/drivers/tty/serial/mpc52xx_uart.c: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]: => 1004:12, 1005:12, 1006:14, 970:12, 968:16, 971:14, 969:12, 1002:16, 1003:16, 967:16

powerpc-gcc5/ppc32_allmodconfig

> + /kisskb/src/drivers/usb/typec/tcpm/tcpm.c: error: case label does not reduce to an integer constant: => 4724:3

arm64-gcc5.4/arm64-allmodconfig
powerpc-gcc5/powerpc-allmodconfig
powerpc-gcc5/ppc64_book3e_allmodconfig

> + /kisskb/src/fs/xfs/xfs_buf.h: error: initializer element is not constant: => 46:23
> + /kisskb/src/sound/usb/midi.c: error: case label does not reduce to an integer constant: => 1389:2

arm64-gcc5.4/arm64-allmodconfig
mipsel/mips-allmodconfig
powerpc-gcc5/powerpc-allmodconfig
powerpc-gcc5/powerpc-allyesconfig
powerpc-gcc5/ppc32_allmodconfig
powerpc-gcc5/ppc64_book3e_allmodconfig
powerpc-gcc5/ppc64le_allmodconfig

> + /kisskb/src/include/linux/compiler_types.h: error: call to '__compiletime_assert_402' declared with attribute error: FIELD_PREP: mask is not constant: => 352:38
> + /kisskb/src/include/linux/compiler_types.h: error: call to '__compiletime_assert_404' declared with attribute error: FIELD_PREP: mask is not constant: => 352:38

powerpc-gcc5/powerpc-allmodconfig


> *** WARNINGS ***
>
> 5 warning regressions:
> + /kisskb/src/arch/m68k/include/asm/string.h: warning: '__builtin_memset' offset [0, 11] is out of the bounds [0, 0] [-Warray-bounds]: => 68:25

m68k-gcc11/sun3_defconfig

> + /kisskb/src/arch/s390/kernel/machine_kexec.c: warning: 'memcpy' offset [0, 511] is out of the bounds [0, 0] [-Warray-bounds]: => 57:9

s390x-gcc11/s390-defconfig

> + /kisskb/src/drivers/net/ethernet/i825xx/sun3_82586.c: warning: array subscript 1 is above array bounds of 'volatile struct transmit_cmd_struct *[1]' [-Warray-bounds]: => 989:108, 989:122

m68k-gcc11/sun3_defconfig
m68k-gcc8/sun3_defconfig

> + /kisskb/src/drivers/scsi/mpt3sas/mpt3sas_base.c: warning: array subscript 'Mpi2SasIOUnitPage1_t {aka struct _MPI2_CONFIG_PAGE_SASIOUNIT_1}[0]' is partly outside array bounds of 'unsigned char[20]' [-Warray-bounds]: => 5400:40, 5403:43, 5396:40

powerpc-gcc11/skiroot_defconfig

> + modpost: WARNING: modpost: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.: => N/A

sparc64-gcc11/sparc64-defconfig
sparc64/sparc64-defconfig

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

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