# kgdb kernel.debug /var/crash/vmcore.7 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 "amd64-marcel-freebsd"... Unread portion of the kernel message buffer: fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80955a99 stack pointer = 0x28:0xfffffe0221fae0f0 frame pointer = 0x28:0xfffffe0221fae190 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 = 13 (ng_queue5) trap number = 12 panic: page fault cpuid = 2 KDB: stack backtrace: #0 0xffffffff80994c60 at kdb_backtrace+0x60 #1 0xffffffff80957936 at vpanic+0x126 #2 0xffffffff80957803 at panic+0x43 #3 0xffffffff80d6416b at trap_fatal+0x36b #4 0xffffffff80d6446d at trap_pfault+0x2ed #5 0xffffffff80d63aea at trap+0x47a #6 0xffffffff80d49ac2 at calltrap+0x8 #7 0xffffffff80aa4f16 at ip_input+0x4c6 #8 0xffffffff80a28e42 at netisr_dispatch_src+0x62 #9 0xffffffff80a7fc4f at ng_iface_rcvdata+0xdf #10 0xffffffff80a7aabc at ng_apply_item+0x22c #11 0xffffffff80a7a6d3 at ng_snd_item+0x1a3 #12 0xffffffff80a7aabc at ng_apply_item+0x22c #13 0xffffffff80a7a6d3 at ng_snd_item+0x1a3 #14 0xffffffff80a7aabc at ng_apply_item+0x22c #15 0xffffffff80a7a6d3 at ng_snd_item+0x1a3 #16 0xffffffff80a89228 at ng_ppp_comp_recv+0x148 #17 0xffffffff80a7aabc at ng_apply_item+0x22c Uptime: 5d3h58m8s Dumping 1253 out of 7989 MB:..2%..11%..21%..31%..41%..52%..62%..71%..81%..91% Reading symbols from /boot/kernel/ums.ko.symbols...done. Loaded symbols for /boot/kernel/ums.ko.symbols #0 doadump (textdump=) at pcpu.h:219 219 __asm("movq %%gs:%1,%0" : "=r" (td) (kgdb) Current language: auto; currently minimal (kgdb) (kgdb) list *0xffffffff80955a99 0xffffffff80955a99 is in __rw_rlock (/usr/src/sys/kern/kern_rwlock.c:431). 426 * the owner stops running or the state of the lock 427 * changes. 428 */ 429 if ((v & RW_LOCK_READ) == 0) { 430 owner = (struct thread *)RW_OWNER(v); 431 if (TD_IS_RUNNING(owner)) { 432 if (LOCK_LOG_TEST(&rw->lock_object, 0)) 433 CTR3(KTR_LOCK, 434 "%s: spinning on %p held by %p", 435 __func__, rw, owner); (kgdb) backtrace #0 doadump (textdump=) at pcpu.h:219 #1 0xffffffff80957592 in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:486 #2 0xffffffff80957975 in vpanic (fmt=, ap=) at /usr/src/sys/kern/kern_shutdown.c:889 #3 0xffffffff80957803 in panic (fmt=0x0) at /usr/src/sys/kern/kern_shutdown.c:818 #4 0xffffffff80d6416b in trap_fatal (frame=, eva=) at /usr/src/sys/amd64/amd64/trap.c:858 #5 0xffffffff80d6446d in trap_pfault (frame=0xfffffe0221fae040, usermode=) at /usr/src/sys/amd64/amd64/trap.c:681 #6 0xffffffff80d63aea in trap (frame=0xfffffe0221fae040) at /usr/src/sys/amd64/amd64/trap.c:447 #7 0xffffffff80d49ac2 in calltrap () at /usr/src/sys/amd64/amd64/exception.S:236 #8 0xffffffff80955a99 in __rw_rlock (c=0xfffff80252442c38, file=0x0, line=0) at /usr/src/sys/kern/kern_rwlock.c:430 #9 0xffffffff80aa4f16 in ip_input (m=0xfffff8006451d100) at /usr/src/sys/netinet/ip_input.c:593 #10 0xffffffff80a28e42 in netisr_dispatch_src (proto=, source=, m=0x0) at /usr/src/sys/net/netisr.c:976 #11 0xffffffff80a7fc4f in ng_iface_rcvdata (hook=, item=) at /usr/src/sys/netgraph/ng_iface.c:780 #12 0xffffffff80a7aabc in ng_apply_item (node=0xfffff801521d3500, item=0xfffff8024a61c900, rw=0) at /usr/src/sys/netgraph/ng_base.c:2397 #13 0xffffffff80a7a6d3 in ng_snd_item (item=0xfffff8024a61c900, flags=) at /usr/src/sys/netgraph/ng_base.c:2314 #14 0xffffffff80a7aabc in ng_apply_item (node=0xfffff8006cfba300, item=0xfffff8024a61c900, rw=0) at /usr/src/sys/netgraph/ng_base.c:2397 #15 0xffffffff80a7a6d3 in ng_snd_item (item=0xfffff8024a61c900, flags=) at /usr/src/sys/netgraph/ng_base.c:2314 #16 0xffffffff80a7aabc in ng_apply_item (node=0xfffff80152fe5a00, item=0xfffff8024a61c900, rw=0) at /usr/src/sys/netgraph/ng_base.c:2397 #17 0xffffffff80a7a6d3 in ng_snd_item (item=0xfffff8024a61c900, flags=) at /usr/src/sys/netgraph/ng_base.c:2314 #18 0xffffffff80a89228 in ng_ppp_comp_recv (node=, item=0xfffff8024a61c900, proto=, linkNum=) at /usr/src/sys/netgraph/ng_ppp.c:947 #19 0xffffffff80a7aabc in ng_apply_item (node=0xfffff8015232fc00, item=0xfffff8024a61c900, rw=0) at /usr/src/sys/netgraph/ng_base.c:2397 #20 0xffffffff80a7a6d3 in ng_snd_item (item=0xfffff8024a61c900, flags=) at /usr/src/sys/netgraph/ng_base.c:2314 #21 0xffffffff80a7aabc in ng_apply_item (node=0xfffff80152225000, item=0xfffff8024a61c900, rw=0) at /usr/src/sys/netgraph/ng_base.c:2397 #22 0xffffffff80a7a6d3 in ng_snd_item (item=0xfffff8024a61c900, flags=) at /usr/src/sys/netgraph/ng_base.c:2314 #23 0xffffffff80a8eab4 in ng_pptpgre_rcvdata_lower (hook=, item=0xfffff8024a61c900) at /usr/src/sys/netgraph/ng_pptpgre.c:811 #24 0xffffffff80a7aabc in ng_apply_item (node=0xfffff801520b5d00, item=0xfffff8024a61c900, rw=0) at /usr/src/sys/netgraph/ng_base.c:2397 #25 0xffffffff80a7a6d3 in ng_snd_item (item=0xfffff8024a61c900, flags=) at /usr/src/sys/netgraph/ng_base.c:2314 #26 0xffffffff80a81812 in ng_ksocket_incoming2 (node=0xfffff80152032800, hook=, arg1=0xfffff8025276b570, arg2=0) at /usr/src/sys/netgraph/ng_ksocket.c:1165 #27 0xffffffff80a7a93c in ng_apply_item (node=0xfffff80152032800, item=0xfffff8019a847500, rw=1) at /usr/src/sys/netgraph/ng_base.c:2468 #28 0xffffffff80a7c729 in ngthread (arg=) at /usr/src/sys/netgraph/ng_base.c:3432 #29 0xffffffff8092276a in fork_exit (callout=0xffffffff80a7c630 , arg=0x0, frame=0xfffffe0221fae9c0) at /usr/src/sys/kern/kern_fork.c:1027 #30 0xffffffff80d49ffe in fork_trampoline () at /usr/src/sys/amd64/amd64/exception.S:611 #31 0x0000000000000000 in ?? () (kgdb) quit