lkml.org 
[lkml]   [2022]   [May]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjectoutside array bounds error on ppc64_defconfig, GCC 12.1.0
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

\
 
 \ /
  Last update: 2022-06-01 04:53    [W:0.088 / U:0.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site