From owner-freebsd-net@freebsd.org Tue Oct 4 20:39:42 2016 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9C52DAF5F61 for ; Tue, 4 Oct 2016 20:39:42 +0000 (UTC) (envelope-from avernar@gmail.com) Received: from mail-wm0-x231.google.com (mail-wm0-x231.google.com [IPv6:2a00:1450:400c:c09::231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 366F6333 for ; Tue, 4 Oct 2016 20:39:42 +0000 (UTC) (envelope-from avernar@gmail.com) Received: by mail-wm0-x231.google.com with SMTP id b201so168669178wmb.0 for ; Tue, 04 Oct 2016 13:39:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to; bh=qukC4DwLWIatpdf8+g6UqTyj+veoeU/h9UGXTP8IbSI=; b=qVwcIezpWXlv3YTuXZ+gTZcYI2SszTl4B35SCbKHN4FulKSZFrQpY5E9dyAs/U9/Lo sC54MRYJ/v1jG9kMhGsqJhv+kthxnFeKmPpI00uFZGpdEvJYP1MNxROXEe0+Kytm/gnD E7X40x+cnM/83hYEsZkl9qCzpL3/DEfLfI7VbNViwMMQkefHq4NlzZFYT561NMsyPlaB ifR+vC4R3Yj+whaY6I7da06MtgypysBqtGwGfH4TxvnvscNLjWmBGh5lCGLmKGOeuN40 zWnXMsMu89/eI17o9G8PkxFosQgLvXcSCwM9tMC3e0f9iUZjAxFS7NGyTiXDQxlMfEjM GaIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=qukC4DwLWIatpdf8+g6UqTyj+veoeU/h9UGXTP8IbSI=; b=BmZfkyETCKVeSXZGqrXj3lstzBS5B+/SnEbkPF9e0KsH6bYrSs75+oqb93niJfo9+Q RWoPR4/D8aTYIljaf/BB14lPySjWDtSJJFRjbQyJ/XVK/Urf726zvIurFUb8rHiLH653 AsMzomU+0u+YOVDr1gmHCUDNsau80tUGA/3IkeAJfJmnE33xu9xdtu5d/XI0qwGWNEb5 VMrBILAqCWT2M4zVGlhUwHvjACKyFNHIZBvcg+jDcbbgROhkeUqWg1Uekxp3DgkGXHWK 5UtC+km45HP261vCg7jCA7q3n/Q9zxaASQ16QUnTW3HuCoELxZteeewmeb+o2WKj026K 69wg== X-Gm-Message-State: AA6/9Rkji1V23ww3sT4Tk/aKf+qmoAtUZx/gA8mkkKmXSrZG3wK6srhWYr+tWRW6Ry8s/6l/875o25MHrItAaQ== X-Received: by 10.28.66.1 with SMTP id p1mr5269329wma.53.1475613580316; Tue, 04 Oct 2016 13:39:40 -0700 (PDT) MIME-Version: 1.0 Received: by 10.80.142.14 with HTTP; Tue, 4 Oct 2016 13:39:39 -0700 (PDT) From: Avernar Date: Tue, 4 Oct 2016 16:39:39 -0400 Message-ID: Subject: kernel panic when shutting down ppp To: freebsd-net@freebsd.org Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Oct 2016 20:39:42 -0000 I'm running ppp for a pppoe connection in a vnet jail on 11.0-RELEASE. I've been getting a panic when shutting down ppp sometimes. Any ideas what might be causing this? Fatal trap 12: page fault while in kernel mode cpuid = 3; apic id = 06 fault virtual address = 0x0 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80c20f09 stack pointer = 0x28:0xfffffe04663f7470 frame pointer = 0x28:0xfffffe04663f75c0 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 = 3352 (ppp) trap number = 12 panic: page fault cpuid = 3 (kgdb) bt #0 doadump (textdump=) at pcpu.h:221 #1 0xffffffff80ae6889 in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:366 #2 0xffffffff80ae6e3b in vpanic (fmt=, ap=) at /usr/src/sys/kern/kern_shutdown.c:759 #3 0xffffffff80ae6c73 in panic (fmt=0x0) at /usr/src/sys/kern/kern_shutdown.c:690 #4 0xffffffff80ff1d31 in trap_fatal (frame=0xfffffe04663f73c0, eva=0) at /usr/src/sys/amd64/amd64/trap.c:841 #5 0xffffffff80ff1f23 in trap_pfault (frame=0xfffffe04663f73c0, usermode=0) at /usr/src/sys/amd64/amd64/trap.c:691 #6 0xffffffff80ff14cc in trap (frame=0xfffffe04663f73c0) at /usr/src/sys/amd64/amd64/trap.c:442 #7 0xffffffff80fd4641 in calltrap () at /usr/src/sys/amd64/amd64/exception.S:236 #8 0xffffffff80c20f09 in sysctl_dumpentry (rn=0xfffff8014e403dd0, vw=0xfffffe04663f7618) at /usr/src/sys/net/rtsock.c:1543 #9 0xffffffff80c1a910 in rn_walktree (h=, f=, w=) at /usr/src/sys/net/radix.c:1094 #10 0xffffffff80c20832 in sysctl_rtsock (oidp=, arg1=, arg2=, req=) at /usr/src/sys/net/rtsock.c:1894 #11 0xffffffff80af508f in sysctl_root_handler_locked (oid=0xffffffff81a23600, arg1=0xfffffe04663f7928, arg2=4, req=0xfffffe04663f7858, tracker=0xfffffe04663f77d0) at /usr/src/sys/kern/kern_sysctl.c:165 #12 0xffffffff80af47ff in sysctl_root (arg1=, arg2=) at /usr/src/sys/kern/kern_sysctl.c:1876 #13 0xffffffff80af4dd9 in userland_sysctl (td=0xfffff8014eaa0000, name=0xfffffe04663f7920, namelen=6, old=, oldlenp=, inkernel=, new=, newlen=, retval=0xfffff8006e059000, flags=0) at /usr/src/sys/kern/kern_sysctl.c:1979 #14 0xffffffff80af4bb4 in sys___sysctl (td=0xfffff8014eaa0000, uap=0xfffffe04663f7a40) at /usr/src/sys/kern/kern_sysctl.c:1906 #15 0xffffffff80ff268e in amd64_syscall (td=, traced=0) at subr_syscall.c:135 #16 0xffffffff80fd492b in Xfast_syscall () at /usr/src/sys/amd64/amd64/exception.S:396 #17 0x0000000801dd6f5a in ?? () Current language: auto; currently minimal (kgdb) frame 8 #8 0xffffffff80c20f09 in sysctl_dumpentry (rn=0xfffff8014e403dd0, vw=0xfffffe04663f7618) at /usr/src/sys/net/rtsock.c:1543 1543 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr; (kgdb) list 1538 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 1539 info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(rt_key(rt), 1540 rt_mask(rt), &ss); 1541 info.rti_info[RTAX_GENMASK] = 0; 1542 if (rt->rt_ifp) { 1543 info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr; 1544 info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; 1545 if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) 1546 info.rti_info[RTAX_BRD] = rt->rt_ifa->ifa_dstaddr; 1547 }