From owner-freebsd-stable@FreeBSD.ORG Sun Dec 21 13:40:50 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id DD117FCC for ; Sun, 21 Dec 2014 13:40:50 +0000 (UTC) Received: from mail-ie0-x22d.google.com (mail-ie0-x22d.google.com [IPv6:2607:f8b0:4001:c03::22d]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A5B172929 for ; Sun, 21 Dec 2014 13:40:50 +0000 (UTC) Received: by mail-ie0-f173.google.com with SMTP id y20so3104850ier.18 for ; Sun, 21 Dec 2014 05:40:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=neosmart.net; s=google; h=from:content-type:subject:message-id:date:to:mime-version; bh=FysIshqTApsRR9NxEKpzrVVUcv/Ghno8aOB0ieLR25Y=; b=pUHaamun2fUN3WdDT3XDNnRqk6vNjSoe/UJeSK2yFrJjbnQ3zWK8RCa9AhNKM5Nawz TWj9TZETMwy7FNNHtKGAEDCEkx3A2pL4mAMkt6/UtPZuhPpCWNhODTUqUZfUT38hD0Az hZmkL7HZI1rceLW55riIXcLnBtaQedt+gaDok= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:content-type:subject:message-id:date:to :mime-version; bh=FysIshqTApsRR9NxEKpzrVVUcv/Ghno8aOB0ieLR25Y=; b=enkftoYn5b1VQ5rvrBhOI7r6uaMQ6DNBfyx10/Ep/hLZ1DD1zs6yZt+TecXcYRJrbb 3Rs/TnxnsxiHx9mVGQPYvY0PzcSsdvfIZkRDWzMimYUOUSIQxGItiQxmyAl9xpKnP3pn 0amoW12inHyNUebWCRFGD9Qx5ukHgJ7Bxl3c6SXvpa46SV3nRKrEwYOuExlwTg7iRoRG q+wsuwAN4he3wT06r7dG4apychpUFfPCtQuL60+075Scy9ZEjIIZU+qz59+mFfKNl9y9 /j524ulNRCV+s1lmJPosU8+JMYN60h2xhJfA53aJKgWCrNJQ6a88/NUAE3Hu8XcSspaW muHQ== X-Gm-Message-State: ALoCoQnp+dq1ix5CbPA0uXtS3SbKDeHvlx1yKtIdBNZTg2tM3kWE2IuccMn1krVp6hvlVJjghiN5 X-Received: by 10.50.114.35 with SMTP id jd3mr12049715igb.31.1419169249906; Sun, 21 Dec 2014 05:40:49 -0800 (PST) Received: from ?IPv6:2601:d:180:19c3:351f:4af5:16bf:3d44? ([2601:d:180:19c3:351f:4af5:16bf:3d44]) by mx.google.com with ESMTPSA id r12sm7095081ioe.43.2014.12.21.05.40.49 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 21 Dec 2014 05:40:49 -0800 (PST) From: Mahmoud Al-Qudsi Content-Type: multipart/mixed; boundary="Apple-Mail=_047B4DD7-F7F0-41D4-92A5-B99461BBE670" Subject: fdescfs kernel panic on 10.1-RELEASE Message-Id: <796D07B5-4BEC-4E6E-BB7B-21951EB91E4B@neosmart.net> Date: Sun, 21 Dec 2014 07:40:48 -0600 To: freebsd-stable@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2064\)) X-Mailer: Apple Mail (2.2064) X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 21 Dec 2014 13:40:50 -0000 --Apple-Mail=_047B4DD7-F7F0-41D4-92A5-B99461BBE670 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hello all, I have two very-similarily configured virtual machines, one of which = will instantly go into a kernel panic and reboots when I attempt to launch = Chrome (as a normal user, without root priviliges).=20 This is running on FreeBSD 10.1-RELEASE i386, under XOrg with the VESA = driver. Even though my kernel is built with BREAK_TO_DEBUGGER, Chromimum always = causes a hard restart of the entire machine - though KDB does print the kernel stacktrace. Any idea how I can catch this? Without ddb, I'm not sure where to go next to debug the issue. This is the stack trace as reported by KDB on the serial console, and = I've attached the output of dtruss for the process in question. Many thanks, Mahmoud Al-Qudsi processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 820 (chrome) trld-elf.so.1`0x2dap n746cfb umber =3D 12 panic: page fault cpuid =3D 5 KDB: stack backtrace: db_trace_self_wrapper(c11ca238,c141f650,c65fc620,c5b26478,c095dc76,...) = at db_trace_self_wrapper+0x2d/frame 0xc5b26448 kdb_backtrace(c138ccff,5,c1095b1c,c5b26504,c5db0cc8,...) at = kdb_backtrace+0x30/frame 0xc5b264b0 vpanic(c5b26504,c5b26548,c104cd24,c1095b1c,c138e74d,...) at = vpanic+0x11d/frame 0xc5b264ec panic(c1095b1c,c138e74d,c65fc7c8,1,1,...) at panic+0x12/frame 0xc5b264f8 trap_fatal(5,0,c138e746,246,c107be3f,...) at trap_fatal+0x324/frame = 0xc5b26548 trap_pfault(c,c,c65fc620,c5b265e0,246,...) at trap_pfault+0x72/frame = 0xc5b265c0 trap(c5b26714) at trap+0x75e/frame 0xc5b26708 calltrap() at calltrap+0x6/frame 0xc5b26708 --- trap 0xc, eip =3D 0xc0c0363d, esp =3D 0xc5b26754, ebp =3D 0xc5b2675c = --- strlen(f,c5b26848,c11c3301,246,c11c32a8,...) at strlen+0xd/frame = 0xc5b2675c kvprintf(c11c328f,c0b7b3b0,c5b26848,a,c5b26890,...) at = kvprintf+0x81e/frame 0xc5b26828 vsnprintf(c153c0b2,100,c11c328f,c5b26890,c5b26890,...) at = vsnprintf+0x45/frame 0xc5b26860 kassert_panic(c11c328f,f,c655d0ef,b5,0,...) at kassert_panic+0x2d/frame = 0xc5b26884 __mtx_lock_flags(c66ccba4,0,c655d0ef,b5,c65fc620,...) at = __mtx_lock_flags+0x17e/frame 0xc5b268b8 fdesc_allocvp(1,0,3,c65ca000,c5b26918,...) at fdesc_allocvp+0xad/frame = 0xc5b268e8 fdesc_lookup(c5b269a8,c1395423,c11fbb35,c11d6ef8,c14798f0,...) at = fdesc_lookup+0x1f0/frame 0xc5b26940 VOP_LOOKUP_APV(c655e2f8,c5b269a8,c5b26b64,31b,0,...) at = VOP_LOOKUP_APV+0x12f/frame 0xc5b26970 lookup(c5b26b08,c5b26a40,110,d5,1101,...) at lookup+0x514/frame = 0xc5b269d0 namei(c5b26b08,0,4000144,0,bf9fd6d1,...) at namei+0x4fd/frame 0xc5b26a68 kern_statat_vnhook(c65fc620,0,ffffff9c,bf9fd6d1,0,...) at = kern_statat_vnhook+0xbd/frame 0xc5b26ba8 sys_stat(c65fc620,c5b26cc8,c14385b4,c5b26cc8,0,...) at = sys_stat+0x5a/frame 0xc5b26c40 syscall(c5b26d08) at syscall+0x31b/frame 0xc5b26cfc Xint0x80_syscall() at Xint0x80_syscall+0x21/frame 0xc5b26cfc --- syscall (188, FreeBSD ELF32, sys_stat), eip =3D 0x2f0536e7, esp =3D = 0xbf9fd68c, ebp =3D 0xbf9fd898 =E2=80=94 --Apple-Mail=_047B4DD7-F7F0-41D4-92A5-B99461BBE670 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii --Apple-Mail=_047B4DD7-F7F0-41D4-92A5-B99461BBE670--