Bugfix in pmix_bitmap_num_set_bits#3670
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rhc54 merged 1 commit intoopenpmix:masterfrom Aug 26, 2025
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Signed-off-by: Matthew Whitlock <mwhitlo@sandia.gov>
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Nice catch - thanks! |
jsquyres
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Inspired by some fixes in PMIx: * @Matthew-Witlock's fix in openpmix/openpmix@47b6634 (openpmix/openpmix#3670) * @Matthew-Witlock's fix in openpmix/openpmix@08c22de (openpmix/openpmix#3709) * @Matthew-Witlock's fix in openpmix/openpmix@36df200 (openpmix/openpmix#3732) Fix some logic errors in opal_bitmap.c:opal_num_set_bits(): the parameter is supposed to be the number of bits, not number of elements. The fixes here are essentially the same as Matthew's, but with some stylistic changes. It doesn't look like this function is invoked anywhere in the code base, which is why we hadn't previously noticed these issues. That being said, if we have the code, it should be correct. This commit therefore also adds some tests for the opal_bitmap_num_set_bits() function to "make check" to make sure that it's actually working properly. Signed-off-by: Jeff Squyres <jeff@squyres.com>
jsquyres
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Dec 27, 2025
Inspired by some fixes in PMIx: * From the @Matthew-Whitlock fix in openpmix/openpmix@47b6634 (openpmix/openpmix#3670) * From the @Matthew-Whitlock fix in openpmix/openpmix@08c22de (openpmix/openpmix#3709) * From the @Matthew-Whitlock fix in openpmix/openpmix@36df200 (openpmix/openpmix#3732) Fix some logic errors in opal_bitmap.c:opal_num_set_bits(): the parameter is supposed to be the number of bits, not number of elements. The fixes here are essentially the same as Matthew's, but with some stylistic changes. It doesn't look like this function is invoked anywhere in the code base, which is why we hadn't previously noticed these issues. That being said, if we have the code, it should be correct. This commit therefore also adds some tests for the opal_bitmap_num_set_bits() function to "make check" to make sure that it's actually working properly. Signed-off-by: Jeff Squyres <jeff@squyres.com>
jsquyres
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Dec 27, 2025
Inspired by some fixes in PMIx: * From the @Matthew-Whitlock fix in openpmix/openpmix@47b6634 (openpmix/openpmix#3670) * From the @Matthew-Whitlock fix in openpmix/openpmix@08c22de (openpmix/openpmix#3709) * From the @Matthew-Whitlock fix in openpmix/openpmix@36df200 (openpmix/openpmix#3732) Fix some logic errors in opal_bitmap.c:opal_num_set_bits(): the parameter is supposed to be the number of bits, not number of elements. The fixes here are essentially the same as Matthew's, but with some stylistic changes. It doesn't look like this function is invoked anywhere in the code base, which is why we hadn't previously noticed these issues. That being said, if we have the code, it should be correct. This commit therefore also adds some tests for the opal_bitmap_num_set_bits() function to "make check" to make sure that it's actually working properly. Signed-off-by: Jeff Squyres <jeff@squyres.com>
jsquyres
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Dec 31, 2025
Inspired by some fixes in PMIx: * From the @Matthew-Whitlock fix in openpmix/openpmix@47b6634 (openpmix/openpmix#3670) * From the @Matthew-Whitlock fix in openpmix/openpmix@08c22de (openpmix/openpmix#3709) * From the @Matthew-Whitlock fix in openpmix/openpmix@36df200 (openpmix/openpmix#3732) Fix some logic errors in opal_bitmap.c:opal_num_set_bits(): the parameter is supposed to be the number of bits, not number of elements. The fixes here are essentially the same as Matthew's, but with some stylistic changes. It doesn't look like this function is invoked anywhere in the code base, which is why we hadn't previously noticed these issues. That being said, if we have the code, it should be correct. This commit therefore also adds some tests for the opal_bitmap_num_set_bits() function to "make check" to make sure that it's actually working properly. Signed-off-by: Jeff Squyres <jeff@squyres.com> (cherry picked from commit 7bbdb0a)
jsquyres
added a commit
to jsquyres/ompi
that referenced
this pull request
Dec 31, 2025
Inspired by some fixes in PMIx: * From the @Matthew-Whitlock fix in openpmix/openpmix@47b6634 (openpmix/openpmix#3670) * From the @Matthew-Whitlock fix in openpmix/openpmix@08c22de (openpmix/openpmix#3709) * From the @Matthew-Whitlock fix in openpmix/openpmix@36df200 (openpmix/openpmix#3732) Fix some logic errors in opal_bitmap.c:opal_num_set_bits(): the parameter is supposed to be the number of bits, not number of elements. The fixes here are essentially the same as Matthew's, but with some stylistic changes. It doesn't look like this function is invoked anywhere in the code base, which is why we hadn't previously noticed these issues. That being said, if we have the code, it should be correct. This commit therefore also adds some tests for the opal_bitmap_num_set_bits() function to "make check" to make sure that it's actually working properly. Signed-off-by: Jeff Squyres <jeff@squyres.com> (cherry picked from commit 7bbdb0a)
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Before, this would read OOB memory and give confusing results.