Diffusion FreeBSD src repository 362c6d8dec6d

nehemiah: manually assemble xstore(-rng)
362c6d8dec6d
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Description

nehemiah: manually assemble xstore(-rng)

It seems that clang IAS erronously adds repz prefix which should not be
there. Cpu would try to store around %ecx bytes of random, while we
only expect a word.

PR: 259218
Reported and tested by: Dennis Clarke <dclarke@blastwave.org>
Sponsored by: The FreeBSD Foundation
MFC after: 1 week

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Provenance

kib	Authored on Oct 20 2021, 10:42 PM

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Event Timeline

kib committed rG362c6d8dec6d: nehemiah: manually assemble xstore(-rng) (authored by kib).Oct 22 2021, 11:31 PM

woodsb02 mentioned this in D22012: Import dhcpcd(8) into FreeBSD base..Oct 23 2021, 1:10 AM

kib mentioned this in rG5306ca9a8e2f: nehemiah: manually assemble xstore(-rng).Oct 28 2021, 12:36 AM

kib mentioned this in rGb2e306164faa: nehemiah: manually assemble xstore(-rng).Dec 9 2021, 12:33 AM

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sys/

dev/

random/

nehemiah.c

rG362c6d8dec6d

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