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Date:      Mon, 14 Mar 2016 20:16:42 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 207998] Panic during boot on Sparc64 11-CURRENT (r296811)
Message-ID:  <bug-207998-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207998

            Bug ID: 207998
           Summary: Panic during boot on Sparc64 11-CURRENT (r296811)
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: sparc64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: dal36@gmx.co.uk

I'm experiencing a panic during boot on sparc64 11-CURRENT (r296811). This
install was booting without problems on 11-CURRENT r296149, and booting the=
 old
kernel avoids the panic. Update procedure was as described in the handbook
(23.6 Rebuilding World). Whilst I'm not familiar with the Sparc64 source, t=
he
panic seems to be occurring around addition of nexus0 and I noticed that a
change was commited to nexus-related code in r296250; could this be related?

Boot messages as follows:

Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20
jumping to kernel entry at 0xc00b0000.
GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2016 The FreeBSD Project.
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        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 11.0-CURRENT #0 r296811: Mon Mar 14 09:31:43 GMT 2016
    root@Computer:/usr/obj/usr/src/sys/GENERIC sparc64
gcc version 4.2.1 20070831 patched [FreeBSD]
WARNING: WITNESS option enabled, expect reduced performance.
VT: init without driver.
real memory  =3D 4294967296 (4096 MB)
avail memory =3D 4172685312 (3979 MB)
cpu0: Sun Microsystems UltraSparc-IIIi Processor (1600.00 MHz CPU)
cpu1: Sun Microsystems UltraSparc-IIIi Processor (1600.00 MHz CPU)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
random: unblocking device.
random: entropy device external interface
kbd0 at kbdmux0
nexus0: <Open Firmware Nexus device>
pcib0: <Sun Host-PCI bridge> mem
0x4000e600000-0x4000e60afff,0x4000e410000-0x4000e41701f,0x7ce00000000-0x7ce=
000000ff,0x4000e780000-0x4000e78ffff
irq 1842,1840,1841,1844,1827 on nexus0
panic: schizo_attach: could not allocate register bank 0
cpuid =3D 0
KDB: stack backtrace:
vpanic() at vpanic+0x1b4
panic() at panic+0x20
schizo_attach() at schizo_attach+0x190
device_attach() at device_attach+0x5a8
device_probe_and_attach() at device_probe_and_attach+0x64
bus_generic_attach() at bus_generic_attach+0x10
nexus_attach() at nexus_attach+0x590
device_attach() at device_attach+0x5a8
device_probe_and_attach() at device_probe_and_attach+0x64
bus_generic_new_pass() at bus_generic_new_pass+0x11c
bus_set_pass() at bus_set_pass+0xf8
root_bus_configure() at root_bus_configure+0x8
configure() at configure+0x4
mi_startup() at mi_startup+0x1d0
btext() at btext+0x28
KDB: enter: panic
[ thread pid 0 tid 100000 ]
Stopped at      kdb_enter+0x80: ta              %xcc, 1
db>

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