Fatal trap 12: page fault while in kernel mode cpuid = 4; apic id = 04 fault virtual address = 0x28 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff81641908 stack pointer = 0x28:0xffffff8121a580d0 frame pointer = 0x28:0xffffff8121a58110 code segment = base rx0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 897 (ng_queue4) trap number = 12 panic: page fault cpuid = 4 KDB: stack backtrace: #0 0xffffffff808e4866 at kdb_backtrace+0x66 #1 0xffffffff808ae7ee at panic+0x1ce #2 0xffffffff80bc6390 at trap_fatal+0x290 #3 0xffffffff80bc66c8 at trap_pfault+0x1e8 #4 0xffffffff80bc6cce at trap+0x3be #5 0xffffffff80bb046f at calltrap+0x8 #6 0xffffffff81659254 at ng_tcpmss_rcvdata+0x1e4 #7 0xffffffff81642ca0 at ng_apply_item+0x220 #8 0xffffffff81641efe at ng_snd_item+0x2ce #9 0xffffffff81654847 at ng_ppp_rcvdata_decompress+0x97 #10 0xffffffff81642ca0 at ng_apply_item+0x220 #11 0xffffffff81641efe at ng_snd_item+0x2ce #12 0xffffffff81642ca0 at ng_apply_item+0x220 #13 0xffffffff81641efe at ng_snd_item+0x2ce #14 0xffffffff81655418 at ng_ppp_rcvdata+0x1b8 #15 0xffffffff81642ca0 at ng_apply_item+0x220 #16 0xffffffff81641efe at ng_snd_item+0x2ce #17 0xffffffff81642ca0 at ng_apply_item+0x220 sysctl.conf contains : kern.maxusers=512 net.inet.ip.forwarding=1 net.inet6.ip6.forwarding=1 net.inet.ip.redirect=0 net.inet.icmp.drop_redirect=1 net.inet6.ip6.redirect=0 net.inet.flowtable.enable=0 kern.maxfiles=65536 kern.maxfilesperproc=32768 kern.ipc.maxsockbuf=16777216 kern.ipc.nmbclusters=262144 kern.ipc.somaxconn=32768 kern.ipc.maxsockets=204800 net.graph.maxdgram=2096000 net.graph.recvspace=2096000 net.graph.maxalloc=65536 net.graph.maxdata=65536 kern.random.sys.harvest.ethernet=0 kern.random.sys.harvest.point_to_point=0 kern.random.sys.harvest.interrupt=0 net.route.netisr_maxqlen=2048 How-To-Repeat: This is a vpn server (pptp) using mpd with about 130 simultaneous connections. Crash occurs on 10 servers randomly once or twice a month on each one.
Responsible Changed From-To: freebsd-bugs->freebsd-net Over to maintainer(s).
For bugs matching the following criteria: Status: In Progress Changed: (is less than) 2014-06-01 Reset to default assignee and clear in-progress tags. Mail being skipped