Messages in this thread | | | Date | Wed, 1 Jun 2022 09:52:32 +0700 | From | Bagas Sanjaya <> | Subject | outside array bounds error on ppc64_defconfig, GCC 12.1.0 |
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Hi,
I'm trying to verify Drop ppc_inst_as_str() patch on [1] by performing ppc64_defconfig build with powerpc64-unknown-linux-gnu-gcc (GCC 12.1.0). The patch is applied on top of powerpc tree, next branch.
I got outside array bounds error:
CC arch/powerpc/kernel/dbell.o In function 'do_byte_reverse', inlined from 'do_vec_store' at arch/powerpc/lib/sstep.c:722:3, inlined from 'emulate_loadstore' at arch/powerpc/lib/sstep.c:3509:9: arch/powerpc/lib/sstep.c:286:25: error: array subscript [3, 4] is outside array bounds of 'union <anonymous>[1]' [-Werror=array-bounds] 286 | up[0] = byterev_8(up[3]); | ^~~~~~~~~~~~~~~~ arch/powerpc/lib/sstep.c: In function 'emulate_loadstore': arch/powerpc/lib/sstep.c:708:11: note: at offset [24, 39] into object 'u' of size 16 708 | } u; | ^ In function 'do_byte_reverse', inlined from 'do_vec_store' at arch/powerpc/lib/sstep.c:722:3, inlined from 'emulate_loadstore' at arch/powerpc/lib/sstep.c:3509:9: arch/powerpc/lib/sstep.c:287:23: error: array subscript [3, 4] is outside array bounds of 'union <anonymous>[1]' [-Werror=array-bounds] 287 | up[3] = tmp; | ~~~~~~^~~~~ arch/powerpc/lib/sstep.c: In function 'emulate_loadstore': arch/powerpc/lib/sstep.c:708:11: note: at offset [24, 39] into object 'u' of size 16 708 | } u; | ^ In function 'do_byte_reverse', inlined from 'do_vec_store' at arch/powerpc/lib/sstep.c:722:3, inlined from 'emulate_loadstore' at arch/powerpc/lib/sstep.c:3509:9: arch/powerpc/lib/sstep.c:288:23: error: array subscript 2 is outside array bounds of 'union <anonymous>[1]' [-Werror=array-bounds] 288 | tmp = byterev_8(up[2]); | ^~~~~~~~~~~~~~~~ arch/powerpc/lib/sstep.c: In function 'emulate_loadstore': arch/powerpc/lib/sstep.c:708:11: note: at offset 16 into object 'u' of size 16 708 | } u; | ^ In function 'do_byte_reverse', inlined from 'do_vec_store' at arch/powerpc/lib/sstep.c:722:3, inlined from 'emulate_loadstore' at arch/powerpc/lib/sstep.c:3509:9: arch/powerpc/lib/sstep.c:289:23: error: array subscript 2 is outside array bounds of 'union <anonymous>[1]' [-Werror=array-bounds] 289 | up[2] = byterev_8(up[1]); | ~~~~~~^~~~~~~~~~~~~~~~~~ arch/powerpc/lib/sstep.c: In function 'emulate_loadstore': arch/powerpc/lib/sstep.c:708:11: note: at offset 16 into object 'u' of size 16 708 | } u; | ^ In function 'do_byte_reverse', inlined from 'do_vec_load' at arch/powerpc/lib/sstep.c:691:3, inlined from 'emulate_loadstore' at arch/powerpc/lib/sstep.c:3438:9: arch/powerpc/lib/sstep.c:286:25: error: array subscript [3, 4] is outside array bounds of 'u8[16]' {aka 'unsigned char[16]'} [-Werror=array-bounds] 286 | up[0] = byterev_8(up[3]); | ^~~~~~~~~~~~~~~~ arch/powerpc/lib/sstep.c: In function 'emulate_loadstore': arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 681 | } u = {}; | ^ arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 In function 'do_byte_reverse', inlined from 'do_vec_load' at arch/powerpc/lib/sstep.c:691:3, inlined from 'emulate_loadstore' at arch/powerpc/lib/sstep.c:3438:9: arch/powerpc/lib/sstep.c:287:23: error: array subscript [3, 4] is outside array bounds of 'u8[16]' {aka 'unsigned char[16]'} [-Werror=array-bounds] 287 | up[3] = tmp; | ~~~~~~^~~~~ arch/powerpc/lib/sstep.c: In function 'emulate_loadstore': arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 681 | } u = {}; | ^ arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset [24, 39] into object 'u' of size 16 In function 'do_byte_reverse', inlined from 'do_vec_load' at arch/powerpc/lib/sstep.c:691:3, inlined from 'emulate_loadstore' at arch/powerpc/lib/sstep.c:3438:9: arch/powerpc/lib/sstep.c:288:23: error: array subscript 2 is outside array bounds of 'u8[16]' {aka 'unsigned char[16]'} [-Werror=array-bounds] 288 | tmp = byterev_8(up[2]); | ^~~~~~~~~~~~~~~~ arch/powerpc/lib/sstep.c: In function 'emulate_loadstore': arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 681 | } u = {}; | ^ arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 In function 'do_byte_reverse', inlined from 'do_vec_load' at arch/powerpc/lib/sstep.c:691:3, inlined from 'emulate_loadstore' at arch/powerpc/lib/sstep.c:3438:9: arch/powerpc/lib/sstep.c:289:23: error: array subscript 2 is outside array bounds of 'u8[16]' {aka 'unsigned char[16]'} [-Werror=array-bounds] 289 | up[2] = byterev_8(up[1]); | ~~~~~~^~~~~~~~~~~~~~~~~~ arch/powerpc/lib/sstep.c: In function 'emulate_loadstore': arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 681 | } u = {}; | ^ arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 arch/powerpc/lib/sstep.c:681:11: note: at offset 16 into object 'u' of size 16 CC arch/powerpc/kernel/jump_label.o cc1: all warnings being treated as errors make[2]: *** [scripts/Makefile.build:271: arch/powerpc/lib/sstep.o] Error 1
These errors above are unrelated to the patch.
[1]: https://lore.kernel.org/linuxppc-dev/20220531065936.3674348-1-mpe@ellerman.id.au/
Thanks.
-- An old man doll... just what I always wanted! - Clara
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