From owner-freebsd-current@FreeBSD.ORG Wed Jan 28 02:47:28 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 85A2D106566B for ; Wed, 28 Jan 2009 02:47:28 +0000 (UTC) (envelope-from mister.olli@googlemail.com) Received: from mu-out-0910.google.com (mu-out-0910.google.com [209.85.134.190]) by mx1.freebsd.org (Postfix) with ESMTP id 1082E8FC12 for ; Wed, 28 Jan 2009 02:47:27 +0000 (UTC) (envelope-from mister.olli@googlemail.com) Received: by mu-out-0910.google.com with SMTP id i2so4813382mue.3 for ; Tue, 27 Jan 2009 18:47:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:subject:from:reply-to:to :content-type:date:message-id:mime-version:x-mailer :content-transfer-encoding; bh=4LAEslfznFroKFl5LKD3ZBB+JMEYVLwjqzXQe+RDrJE=; b=Bm5qB6h+M9HYhT36G+PXUBgmznB6ALLVLKWFcoOvdcOdOrT0Sb3HbzbF5fgq3z5wkR bVBHAE+msD7arvX+gUZ/LUr8Zrkb6bwbct7Jlp1SUPrY0Ah9HcO6FnosiC877qUfvmZC uCO2QJT+ieoHSgb/T4Tyn0b8gAoIYGq2Snyng= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=subject:from:reply-to:to:content-type:date:message-id:mime-version :x-mailer:content-transfer-encoding; b=ghIVOqS9HgggTaCih5o4FgB9GhkBy0jx10sijM4KIuiOi6io0JI4vrEi0xI/eDXRNe FL3oJWVMeL0oLJOG5dgBYLM15gjDT+bjFYUXh+L67zW0zX7AkRBybcNkwpKQ87OJkEWQ 8gOLaL1N6qMuB/le7zE2cXNw8h+jityUk/O6k= Received: by 10.102.228.10 with SMTP id a10mr2455441muh.26.1233110846817; Tue, 27 Jan 2009 18:47:26 -0800 (PST) Received: from ?10.30.1.130? (vpn-or.studi-planet.com [78.47.172.52]) by mx.google.com with ESMTPS id u26sm26664701mug.41.2009.01.27.18.47.25 (version=SSLv3 cipher=RC4-MD5); Tue, 27 Jan 2009 18:47:26 -0800 (PST) From: Mister Olli To: freebsd-current@freebsd.org Content-Type: text/plain Date: Wed, 28 Jan 2009 02:10:02 +0100 Message-Id: <1233105002.26641.2.camel@phoenix.blechhirn.net> Mime-Version: 1.0 X-Mailer: Evolution 2.12.3 Content-Transfer-Encoding: 7bit Subject: Page fault in CURRENT X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: mister.olli@googlemail.com List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Jan 2009 02:47:28 -0000 Hi, The following pagefault just happend on my PV CURRENT domU under Xen 3.3 ================================================================== template_8-CURRENT# pwd /usr Kernel page fault with the following non-sleepable locks held:org/base/head src/ exclusive sleep mutex pmap (pmap) r = 0 (0xc1706ee8) locked @ /usr/src/sys/i386/xen/pmap.c:3711 exclusive sleep mutex vm object (standard object) r = 0 (0xc19c98b8) locked @ /usr/src/sys/vm/vm_pageout.c:771 exclusive sleep mutex vm page queue mutex (vm page queue mutex) r = 0 (0xc052ae84) locked @ /usr/src/sys/vm/vm_pageout.c:447 KDB: stack backtrace: X_db_sym_numargs(c0342b8f,cbe849ac,c010c5f5,c0361da2,1bf,...) at X_db_sym_numargs+0x146 kdb_backtrace(c0361da2,1bf,ffffffff,c04f2c2c,cbe849e4,...) at kdb_backtrace+0x29 witness_display_spinlock(c0344dec,cbe849f8,4,1,0,...) at witness_display_spinlock+0x75 witness_warn(5,0,c036c048,c17a7d80,c,...) at witness_warn+0x1fd trap(cbe84a80) at trap+0x10e alltraps(c0bb2d48,4,c0361da2,1a8,c0361da2,...) at alltraps+0x1b vm_pageout_flush(cbe84ba4,7,0,0,ec1,...) at vm_pageout_flush+0xe5 vm_pageout_flush(c0bb3c78,0,c0361da2,303,32,...) at vm_pageout_flush +0x621 vm_pageout_flush(0,cbe84d38,c033ba96,32d,c1701a90,...) at vm_pageout_flush+0x13ce fork_exit(c02d59b0,0,cbe84d38) at fork_exit+0xb8 fork_trampoline() at fork_trampoline+0x8 --- trap 0, eip = 0, esp = 0xcbe84d70, ebp = 0 --- Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0xc0863fc8 fault code = supervisor write, protection violation instruction pointer = 0x21:0xc03113df stack pointer = 0x29:0xcbe84ac0 frame pointer = 0x29:0xcbe84ae8 code segment = base 0x0, limit 0xf67ff, type 0x1b = DPL 1, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 6 (pagedaemon) [thread pid 6 tid 100024 ] Stopped at pmap_remove_write+0xbf: lock cmpxchgl %edi,0(%ecx) db> =============================================================== Since I was unable to enter anything at the debugger command line I'm unable to provide a backtrace. sorry. -- Olli