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Unread portion of the kernel message buffer:


Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 02
fault virtual address   = 0x28
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80c2dd93
stack pointer           = 0x28:0xfffffe007b3f5970
frame pointer           = 0x28:0xfffffe007b3f5a60
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 14 (xenwatch)
trap number             = 12
panic: page fault
cpuid = 1
KDB: stack backtrace:
#0 0xffffffff80b056c7 at kdb_backtrace+0x67
#1 0xffffffff80abb6d6 at vpanic+0x186
#2 0xffffffff80abb543 at panic+0x43
#3 0xffffffff80f91ce2 at trap_fatal+0x322
#4 0xffffffff80f91eac at trap_pfault+0x1bc
#5 0xffffffff80f91560 at trap+0x280
#6 0xffffffff80f74b81 at calltrap+0x8
#7 0xffffffff80c2e958 at arp_ifinit+0x58
#8 0xffffffff80954ba1 at netfront_backend_changed+0x151
#9 0xffffffff8095c70b at xenwatch_thread+0x2db
#10 0xffffffff80a730c5 at fork_exit+0x85
#11 0xffffffff80f750be at fork_trampoline+0xe
Uptime: 1m0s
Dumping 179 out of 2012 MB:..9%..18%..27%..36%..45%..54%..63%..72%..81%..98%

Reading symbols from /boot/kernel/zfs.ko...Reading symbols from /usr/lib/debug//boot/kernel/zfs.ko.debug...done.
done.
Loaded symbols for /boot/kernel/zfs.ko
Reading symbols from /boot/kernel/opensolaris.ko...Reading symbols from /usr/lib/debug//boot/kernel/opensolaris.ko.debug...done.
done.
Loaded symbols for /boot/kernel/opensolaris.ko
Reading symbols from /boot/kernel/fdescfs.ko...Reading symbols from /usr/lib/debug//boot/kernel/fdescfs.ko.debug...done.
done.
Loaded symbols for /boot/kernel/fdescfs.ko
Reading symbols from /boot/kernel/linprocfs.ko...Reading symbols from /usr/lib/debug//boot/kernel/linprocfs.ko.debug...done.
done.
Loaded symbols for /boot/kernel/linprocfs.ko
Reading symbols from /boot/kernel/linux_common.ko...Reading symbols from /usr/lib/debug//boot/kernel/linux_common.ko.debug...done.
done.
Loaded symbols for /boot/kernel/linux_common.ko
Reading symbols from /boot/kernel/if_bridge.ko...Reading symbols from /usr/lib/debug//boot/kernel/if_bridge.ko.debug...done.
done.
Loaded symbols for /boot/kernel/if_bridge.ko
Reading symbols from /boot/kernel/bridgestp.ko...Reading symbols from /usr/lib/debug//boot/kernel/bridgestp.ko.debug...done.
done.
Loaded symbols for /boot/kernel/bridgestp.ko
Reading symbols from /boot/kernel/pf.ko...Reading symbols from /usr/lib/debug//boot/kernel/pf.ko.debug...done.
done.
Loaded symbols for /boot/kernel/pf.ko
#0  doadump (textdump=<value optimized out>) at pcpu.h:222
222             __asm("movq %%gs:%1,%0" : "=r" (td)
(kgdb) list *0x20:0xffffffff80c2dd93
A syntax error in expression, near `:0xffffffff80c2dd93'.
(kgdb) list *0xffffffff80c2dd93
0xffffffff80c2dd93 is in arprequest (/usr/src/sys/netinet/if_ether.c:427).
422             ro.ro_flags = 0;
423
424             m->m_flags |= M_BCAST;
425             m_clrprotoflags(m);     /* Avoid confusing lower layers. */
426             (*ifp->if_output)(ifp, m, &sa, &ro);
427             ARPSTAT_INC(txrequests);
428     }
429
430
431     /*
Current language:  auto; currently minimal
(kgdb) backtrace
#0  doadump (textdump=<value optimized out>) at pcpu.h:222
#1  0xffffffff80abb159 in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:366
#2  0xffffffff80abb710 in vpanic (fmt=<value optimized out>, ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:759
#3  0xffffffff80abb543 in panic (fmt=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:690
#4  0xffffffff80f91ce2 in trap_fatal (frame=0xfffffe007b3f58b0, eva=40) at /usr/src/sys/amd64/amd64/trap.c:801
#5  0xffffffff80f91eac in trap_pfault (frame=0xfffffe007b3f58b0, usermode=0) at /usr/src/sys/amd64/amd64/trap.c:658
#6  0xffffffff80f91560 in trap (frame=0xfffffe007b3f58b0) at /usr/src/sys/amd64/amd64/trap.c:421
#7  0xffffffff80f74b81 in calltrap () at /usr/src/sys/amd64/amd64/exception.S:236
#8  0xffffffff80c2dd93 in arprequest (ifp=<value optimized out>, sip=<value optimized out>, tip=0xfffffe007b3f5a78, enaddr=<value optimized out>)
    at /usr/src/sys/netinet/if_ether.c:427
#9  0xffffffff80c2e958 in arp_ifinit (ifp=0xfffff800039fe800, ifa=0xfffff80006437a00) at /usr/src/sys/netinet/if_ether.c:1442
#10 0xffffffff80954ba1 in netfront_backend_changed (dev=<value optimized out>, newstate=<value optimized out>) at /usr/src/sys/dev/xen/netfront/netfront.c:952
#11 0xffffffff8095c70b in xenwatch_thread (unused=<value optimized out>) at /usr/src/sys/dev/xen/xenstore/xenstore.c:1060
#12 0xffffffff80a730c5 in fork_exit (callout=0xffffffff8095c430 <xenwatch_thread>, arg=0x0, frame=0xfffffe007b3f5c00) at /usr/src/sys/kern/kern_fork.c:1040
#13 0xffffffff80f750be in fork_trampoline () at /usr/src/sys/amd64/amd64/exception.S:611
#14 0x0000000000000000 in ?? ()
(kgdb) quit