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Noah Goldstein 676f7bcf11 x86: Fix bug in strncmp-evex and strncmp-avx2 [BZ #28895] 
Logic can read before the start of `s1` / `s2` if both `s1` and `s2`
are near the start of a page. To avoid having the result contimated by
these comparisons the `strcmp` variants would mask off these
comparisons. This was missing in the `strncmp` variants causing
the bug. This commit adds the masking to `strncmp` so that out of
range comparisons don't affect the result.

test-strcmp, test-strncmp, test-wcscmp, and test-wcsncmp all pass as
well a full xcheck on x86_64 linux.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

(cherry picked from commit e108c02a5e23c8c88ce66d8705d4a24bb6b9a8bf)
2022-05-04 22:41:15 -07:00
..
bits
debug: Synchronize feature guards in fortified functions [BZ #28746]
2022-01-12 23:34:48 +05:30
_strerror.c
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argz-addsep.c
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argz-append.c
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argz-count.c
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argz-create.c
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argz-ctsep.c
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argz-delete.c
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argz-extract.c
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argz-insert.c
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argz-next.c
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argz-replace.c
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argz-stringify.c
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argz.h
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basename.c
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bcopy.c
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bug-envz1.c
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2017-03-23 11:32:29 -03:00
bug-strcoll1.c
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bug-strcoll2.c
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bug-strncat1.c
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bug-strpbrk1.c
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bug-strspn1.c
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bug-strtok1.c
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byteswap.h
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bzero.c
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Depend
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endian.h
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envz.c
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envz.h
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explicit_bzero.c
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ffs.c
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ffsll.c
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inl-tester.c
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Makefile
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memccpy.c
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memchr.c
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memcmpeq.c
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memcpy.c
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memfrob.c
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memory.h
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memset.c
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noinl-tester.c
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rawmemchr.c
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sigabbrev_np.c
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sigdescr_np.c
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stpcpy.c
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stpncpy.c
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str-two-way.h
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stratcliff.c
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strcasecmp_l.c
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strcasecmp.c
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strcasestr.c
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strcat.c
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strchr.c
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strchrnul.c
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strcmp.c
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strcoll_l.c
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strcpy.c
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strcspn.c
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strdup.c
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strerror_l.c
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strerror.c
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strerrordesc_np.c
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strerrorname_np.c
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strfry.c
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string-inlines.c
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string.h
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strings.h
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strlen.c
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strncase_l.c
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strncase.c
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strncat.c
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strncmp.c
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strncpy.c
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strndup.c
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strstr.c
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strtok_r.c
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strtok.c
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strverscmp.c
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strxfrm_l.c
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strxfrm.c
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swab.c
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test-bcopy.c
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test-bzero.c
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test-endian-file-scope.c
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test-endian-types.c
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test-explicit_bzero.c
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test-memcpy-large.c
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test-memcpy-support.h
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test-memcpy.c
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test-memmem.c
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test-strncmp.c
x86: Fix bug in strncmp-evex and strncmp-avx2 [BZ #28895]
2022-05-04 22:41:15 -07:00
test-strncpy.c
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test-strnlen.c
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testcopy.c
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tester.c
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tst-bswap.c
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tst-cmp.c
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tst-endian.c
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tst-inlcall.c
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tst-strerror.c
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tst-strfry.c
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tst-strlen.c
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tst-strtok_r.c
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tst-strtok.c
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tst-strxfrm2.c
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tst-strxfrm.c
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tst-svc2.c
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tst-svc.c
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tst-svc.expect
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tst-xbzero-opt.c
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Versions
String: Add support for __memcmpeq() ABI on all targets
2021-10-26 16:51:29 -05:00
wordcopy.c
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xpg-strerror.c
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