[Bug 273956] KERN_PROC_VMMAP does not read all mapped files
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Date: Thu, 21 Sep 2023 00:57:21 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273956
Konstantin Belousov <kib@FreeBSD.org> changed:
What |Removed |Added
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CC| |kib@FreeBSD.org
--- Comment #12 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to Ed Maste from comment #10)
So what is the problem?
Difference between vnode/swap is due to how kernel handles partial pages
vs. ld-elf.so.1. Kernel allocates separate anon object to map such page,
and copies data into it from the segment, see imgact_elf.c:map_partial().
ld-elf.so.1 just mmaps for CoW.
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