[starfire:21:24]# kgdb kernel.debug /var/crash/vmcore.3 [p0] kgdb: kvm_nlist(_stopped_cpus): kgdb: kvm_nlist(_stoppcbs): [GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"] GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-marcel-freebsd". Unread portion of the kernel message buffer: kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x78 fault code = supervisor read, page not present instruction pointer = 0x20:0xc0553ecb stack pointer = 0x28:0xd43f2b28 frame pointer = 0x28:0xd43f2b2c code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = 11 (swi1: net) trap number = 12 panic: page fault Uptime: 2d6h24m14s Dumping 510 MB (2 chunks) chunk 0: 1MB (159 pages) ... ok chunk 1: 510MB (130544 pages) 494 478 462 446 430 414 398 382 366 350 334 318 302 286 270 254 238 222 206 190 174 158 142 126 110 94 78 62 46 30 14 #0 doadump () at pcpu.h:165 165 __asm __volatile("movl %%fs:0,%0" : "=r" (td)); (kgdb) backtrace #0 doadump () at pcpu.h:165 #1 0xc052e76e in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409 #2 0xc052ea78 in panic (fmt=0xc0708531 "%s") at /usr/src/sys/kern/kern_shutdown.c:565 #3 0xc06e4441 in trap_fatal (frame=0xd43f2ae8, eva=0) at /usr/src/sys/i386/i386/trap.c:837 #4 0xc06e3b59 in trap (frame= {tf_fs = -1067450360, tf_es = -734068696, tf_ds = 40, tf_edi = -1019700224, tf_esi = -1020668032, tf_ebp = -734057684, tf_isp = -734057708, tf_ebx = -1020701888, tf_edx = -1020668032, tf_ecx = 4, tf_eax = 4, tf_trapno = 12, tf_err = 0, tf_eip = -1068155189, tf_cs = 32, tf_eflags = 65543, tf_esp = -1020668032, tf_ss = -734057648}) at /usr/src/sys/i386/i386/trap.c:270 #5 0xc06d0f9a in calltrap () at /usr/src/sys/i386/i386/exception.s:139 #6 0xc0553ecb in turnstile_setowner (ts=0xc3295340, owner=0x4) at /usr/src/sys/kern/subr_turnstile.c:432 #7 0xc05541f7 in turnstile_wait (lock=0xc3649588, owner=0x4) at /usr/src/sys/kern/subr_turnstile.c:591 #8 0xc05240db in _mtx_lock_sleep (m=0xc3649588, tid=3274299264, opts=0, file=0x0, line=0) at /usr/src/sys/kern/kern_mutex.c:579 #9 0xc05feff8 in nd6_output (ifp=0xc3389c00, origifp=0x4, m0=0xc556f300, dst=0xc373b8dc, rt0=0xc38d9084) at /usr/src/sys/netinet6/nd6.c:2004 #10 0xc05f2ca4 in ip6_forward (m=0xc556f300, srcrt=0) at /usr/src/sys/netinet6/ip6_forward.c:626 #11 0xc05f3f0c in ip6_input (m=0xc556f300) at /usr/src/sys/netinet6/ip6_input.c:732 #12 0xc05b6cdb in netisr_processqueue (ni=0xc0776864) at /usr/src/sys/net/netisr.c:236 #13 0xc05b6ed1 in swi_net (dummy=0x0) at /usr/src/sys/net/netisr.c:343 #14 0xc051563e in ithread_execute_handlers (p=0xc329ca78, ie=0xc32da300) at /usr/src/sys/kern/kern_intr.c:682 #15 0xc051577f in ithread_loop (arg=0xc3283700) at /usr/src/sys/kern/kern_intr.c:765 #16 0xc0514275 in fork_exit (callout=0xc051571c , arg=0x4, frame=0x4) at /usr/src/sys/kern/kern_fork.c:821 #17 0xc06d0ffc in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:208 (kgdb)