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NetBSD domU ksyms issue under xen 126.96.36.199 and 4.2.3, not under 4.1.2
I ran into a weird problem today that I'm still not 100% sure the root
cause of, and can use some additional ideas for what might be happening.
I'm setting up a new dom0 host, a lovely 12-core box with 72G RAM; it's
running NetBSD 6.1.2/amd64 in dom0. I launched a NetBSD 6.1.2/amd64
domU, and noticed vmstat wasn't working:
domU14# vmstat 1
vmstat: undefined symbols: _allevents
After some poking around, it looks like the symbol table as returned by
/dev/ksyms is slightly corrupted - some symbols (but not a lot!) are
I have another system (dom0 - the one I'm replacing with the new box)
with the same 6.1.2 domU image (I verified the md5), and the domU run on
this system does NOT exhibit the problem.
Since the new box was running Xen 4.2.3 (binary pkg from
ftp.netbsd.org), and the old box Xen 4.1.2 (package I built myself a
year or two ago), I tried backing out to the Xen 188.8.131.52 package on
ftp.netbsd.org on the new box, and I got the same result.
If, however, I tar up the xenkernel41 and xentools41 package from the
working system and install on the new box, the domU starts working as
Does anyone know what might be going on here? Any suggestions for
further testing? I'd really like to move to a newer Xen package...
Working Xen kernel:
__ __ _ _ _ ____
\ \/ /___ _ __ | || | / | |___ \
\ // _ \ '_ \ | || |_ | | __) |
/ \ __/ | | | |__ _|| |_ / __/
/_/\_\___|_| |_| |_|(_)_(_)_____|
(XEN) Xen version 4.1.2 (riz@) (gcc version 4.5.3 (NetBSD nb2 20110806)
) Tue Dec 27 23:41:48 PST 2011
__ __ _ _ _ __ _
\ \/ /___ _ __ | || | / | / /_ / |
\ // _ \ '_ \ | || |_ | || '_ \ | |
/ \ __/ | | | |__ _|| || (_) || |
/_/\_\___|_| |_| |_|(_)_(_)___(_)_|
(XEN) Xen version 184.108.40.206 (pbulk@) (gcc version 4.5.3 (NetBSD nb2
20110806) ) Thu Oct 3 00:12:36 UTC 2013
Note that the NetBSD install (in the dom0 or the domU) didn't change in
any other way...
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