From owner-freebsd-hackers@freebsd.org Thu Nov 26 08:47:27 2015 Return-Path: Delivered-To: freebsd-hackers@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 D37A5A38868 for ; Thu, 26 Nov 2015 08:47:27 +0000 (UTC) (envelope-from yaneurabeya@gmail.com) Received: from mail-io0-x229.google.com (mail-io0-x229.google.com [IPv6:2607:f8b0:4001:c06::229]) (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 9C37817B2 for ; Thu, 26 Nov 2015 08:47:27 +0000 (UTC) (envelope-from yaneurabeya@gmail.com) Received: by iouu10 with SMTP id u10so81320784iou.0 for ; Thu, 26 Nov 2015 00:47:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=Orb8U1Fjg+FSNR3i47NvMLnXE3aDo8Xe1j47RrtLjcE=; b=oFdh7b7gH+yBowmC+TNSwX886wP65CSA9+1+LbY/Hw/viTGKI4YYMS6G1QBPmHB6SH WzueKooKJ2NPKbqokRJ/Nl7WvM+UZcy+E1Yzy+idRMz2F4xkQAHiVAntL9HFdmifp+6Z aiBLeilsBOg0iCwkKBs3tOlvgVq3kRQpkzsT3un91NtxU+3X8N+/E6OkK7NX9Ek+u6gP NhbiYHrKz11lly2WulrME1ePhJ0f33AqACpiaOz/99CAyWDSwbQLRpsv8reMdiMOYJi3 cpsV+uVNBWFjZRRxEO7sz3upRl3o1eGkC5Ru0x3K9rZovWgo8dIoVCOvDmQy3YDDdyxN g4Vg== X-Received: by 10.98.87.83 with SMTP id l80mr37959097pfb.126.1448527646839; Thu, 26 Nov 2015 00:47:26 -0800 (PST) Received: from [192.168.20.7] (c-24-16-212-205.hsd1.wa.comcast.net. [24.16.212.205]) by smtp.gmail.com with ESMTPSA id h9sm25798938pfj.69.2015.11.26.00.47.25 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 26 Nov 2015 00:47:25 -0800 (PST) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2104\)) Subject: Re: interface loopback deletion panic From: NGie Cooper In-Reply-To: <1436779437.8863609.1448527079532.JavaMail.yahoo@mail.yahoo.com> Date: Thu, 26 Nov 2015 00:47:24 -0800 Cc: Freebsd Hackers List Content-Transfer-Encoding: quoted-printable Message-Id: References: <1436779437.8863609.1448527079532.JavaMail.yahoo.ref@mail.yahoo.com> <1436779437.8863609.1448527079532.JavaMail.yahoo@mail.yahoo.com> To: Nomad Esst X-Mailer: Apple Mail (2.2104) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Nov 2015 08:47:27 -0000 > On Nov 26, 2015, at 00:37, Nomad Esst via freebsd-hackers = wrote: >=20 > See the following. When I try do delete the loopback interface, I face = this kernel panic. I'm using FreeBSD9.2 AMD64 >=20 > [root@lower ~]# ifconfig lo1 deletein_scrubprefix: err=3D65, prefix = delete failed > panic: rtfree 2 > cpuid =3D 3 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2a/frame = 0xffffff809b08a620 > kdb_backtrace() at kdb_backtrace+0x37/frame 0xffffff809b08a6e0 > panic() at panic+0x1ce/frame 0xffffff809b08a7e0 > rtfree() at rtfree+0x105/frame 0xffffff809b08a800 > in_ifadownkill() at in_ifadownkill+0x115/frame 0xffffff809b08a830 > rn_walktree() at rn_walktree+0x7c/frame 0xffffff809b08a860 > in_ifadown() at in_ifadown+0xbe/frame 0xffffff809b08a8b0 > in_control() at in_control+0xa31/frame 0xffffff809b08a960 > ifioctl() at ifioctl+0x803/frame 0xffffff809b08aa60 > kern_ioctl() at kern_ioctl+0x106/frame 0xffffff809b08aab0 > sys_ioctl() at sys_ioctl+0xfd/frame 0xffffff809b08ab10 > amd64_syscall() at amd64_syscall+0x4df/frame 0xffffff809b08ac30 > Xfast_syscall() at Xfast_syscall+0xf7/frame 0xffffff809b08ac30 > --- syscall (54, FreeBSD ELF64, sys_ioctl), rip =3D 0x801170abc, rsp =3D= 0x7fffffffd3b8, rbp =3D 0x7fffffffde85 --- > KDB: enter: panic > [ thread pid 16247 tid 100253 ] > Stopped at kdb_enter+0x3b: movq $0,0x5d0072(%rip) > Thanks in advance. Can you please describe how you created the interface (address, static = routes, etc)? I=E2=80=99d like to confirm whether or not the issue = exists on stable/9 and newer versions of FreeBSD. Thanks! -NGie=