[Bug 261781] vdso: Time calculation integer overflow

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 261781] VDSO time calculation integer overflow"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 08 Feb 2022 18:07:42 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261781

--- Comment #2 from Jaroslaw Pelczar <jarek@jpelczar.com> ---
(In reply to Konstantin Belousov from comment #1)

scale = 295147905178
ffsl(295147905178) = 2
scale_bits = 2

delta = 64100295
fls(delta) = 26

2 + 26 < 63 => but overflow occurs.

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