% sudo gdb -k /boot/kernel/kernel /var/crash/vmcore.1 GNU gdb 5.2.1 (FreeBSD) Copyright 2002 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-undermydesk-freebsd"... panic: page fault panic messages: --- Fatal trap 12: page fault while in kernel mode fault virtual address = 0x20 fault code = supervisor read, page not present instruction pointer = 0x8:0xc04b6dd7 stack pointer = 0x10:0xc6318ad8 frame pointer = 0x10:0xc6318ae4 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 13 (swi8: tty:sio clock) trap number = 12 panic: page fault Stack backtrace: syncing disks, buffers remaining... 893 893 893 893 893 893 893 893 893 893 893 893 893 893 893 893 893 893 893 893 giving up on 672 buffers Uptime: 5h58m42s Dumping 64 MB 16 32 48 --- Reading symbols from /usr/obj/usr/src/sys/TENSOR/modules/usr/src/sys/modules/linux/linux.ko.debug...done. Loaded symbols for /usr/obj/usr/src/sys/TENSOR/modules/usr/src/sys/modules/linux/linux.ko.debug #0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240 240 dumping++; (kgdb) bt #0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240 #1 0xc04befa1 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:372 #2 0xc04bf2a5 in panic () at /usr/src/sys/kern/kern_shutdown.c:550 #3 0xc061045a in trap_fatal (frame=0xc6318a98, eva=32) at /usr/src/sys/i386/i386/trap.c:820 #4 0xc060fbdd in trap (frame= {tf_fs = 24, tf_es = 16, tf_ds = 16, tf_edi = -1059161424, tf_esi = 0, tf_ebp = -969831708, tf_isp = -969831740, tf_ebx = -1049732976, tf_edx = -1059161424, tf_ecx = 0, tf_eax = 1, tf_trapno = 12, tf_err = 0, tf_eip = -1068798505, tf_cs = 8, tf_eflags = 66050, tf_esp = -1049733120, tf_ss = -1047585792}) at /usr/src/sys/i386/i386/trap.c:252 #5 0xc0602748 in calltrap () at {standard input}:102 #6 0xc0526516 in rtfree (rt=0xc16e5890) at /usr/src/sys/net/route.c:279 #7 0xc056d551 in nd6_output (ifp=0xc0de7ab0, origifp=0xc16db000, m0=0xc0e05a00, dst=0xc19168dc, rt0=0xc18f1c00) at /usr/src/sys/netinet6/nd6.c:1917 #8 0xc056441a in ip6_output (m0=0x500, opt=0x0, ro=0xc18304b0, flags=0, im6o=0x0, ifpp=0x0, inp=0xc0e05a46) at /usr/src/sys/netinet6/ip6_output.c:961 #9 0xc054286f in tcp_output (tp=0xc1963000) at /usr/src/sys/netinet/tcp_output.c:883 #10 0xc05468bf in tcp_timer_delack (xtp=0xc1963000) at /usr/src/sys/netinet/tcp_timer.c:198 #11 0xc04cdb3f in softclock (dummy=0x0) at /usr/src/sys/kern/kern_timeout.c:225 #12 0xc04ae011 in ithread_loop (arg=0xc0de4c80) at /usr/src/sys/kern/kern_intr.c:534 #13 0xc04ad0d5 in fork_exit (callout=0xc04adea8 , arg=0xc0de4c80, frame=0xc6318d48) at /usr/src/sys/kern/kern_fork.c:796 (kgdb) q