[Bug 232387] head -r345558 (updated): system crash during kldload if_epair on powerpc64 (for more modern buildworld buildkernel toolchain experiments)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=232387

Mark Millard <marklmi26-fbsd at yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|head -r339076: system crash |head -r345558 (updated):
                   |in vnet_epair_init during   |system crash during kldload
                   |kern_jail_set in a kyua     |if_epair on powerpc64 (for
                   |test on powerpc64           |more modern buildworld
                   |                            |buildkernel toolchain
                   |                            |experiments)

--- Comment #15 from Mark Millard <marklmi26-fbsd at yahoo.com> ---
(In reply to Mark Millard from comment #14)

Turns out that just doing:

# kldload if_epair

is sufficient to cause the crash.

By contrast, loading geom_uzip laods without crashing
(including loading xz).

I'd expect the same for a devel/powerpc-xtoolchain-gcc
based buildworld buildkernel that is installed and booted
but I've not tried it. (The original report was for that
context.)

devel/powerpc64-binutils is common to both types of builds
but the compilers are not.

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