From owner-freebsd-current@FreeBSD.ORG Mon Apr 26 09:54:35 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4115016A4CE for ; Mon, 26 Apr 2004 09:54:35 -0700 (PDT) Received: from mail-gw0.york.ac.uk (mail-gw0.york.ac.uk [144.32.128.245]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8138C43D2D for ; Mon, 26 Apr 2004 09:54:32 -0700 (PDT) (envelope-from gavin.atkinson@ury.york.ac.uk) Received: from ury.york.ac.uk (ury.york.ac.uk [144.32.108.81]) by mail-gw0.york.ac.uk (8.12.10/8.12.10) with ESMTP id i3QGsTUp004989 for ; Mon, 26 Apr 2004 17:54:29 +0100 (BST) Received: from ury.york.ac.uk (localhost.york.ac.uk [127.0.0.1]) by ury.york.ac.uk (8.12.9p2/8.12.9) with ESMTP id i3QGsTX2037133 for ; Mon, 26 Apr 2004 17:54:29 +0100 (BST) (envelope-from gavin.atkinson@ury.york.ac.uk) Received: from localhost (gavin@localhost)i3QGsTBH037130 for ; Mon, 26 Apr 2004 17:54:29 +0100 (BST) (envelope-from gavin.atkinson@ury.york.ac.uk) X-Authentication-Warning: ury.york.ac.uk: gavin owned process doing -bs Date: Mon, 26 Apr 2004 17:54:29 +0100 (BST) From: Gavin Atkinson X-X-Sender: gavin@ury.york.ac.uk To: freebsd-current@freebsd.org Message-ID: <20040426174558.Y36874@ury.york.ac.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-York-MailScanner: Found to be clean Subject: panic: Exit: Single threading fouled up X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Apr 2004 16:54:35 -0000 Hi, I've seen this panic twice now, once on a heavily loaded UP machine running gnome at the time, and once on an SMP (hyperthreaded) machine which was mostly idle as it was shutting down. Both running with ULE. FreeBSD buffy.york.ac.uk 5.2-CURRENT FreeBSD 5.2-CURRENT #7: Tue Apr 13 19:45:13 BST 2004 root@buffy.york.ac.uk:/usr/obj/usr/src/sys/GENERIC i386 (the other machine - the idle one - is running a kernel from April 17th) panic: Exit: Single threading fouled up at line 157 in file /usr/src/sys/kern/kern_exit.c cpuid = 0; Debugger("panic") Stopped at Debugger+0x46: xchgl %ebx,in_Debugger.0 db> trace Debugger(c07bfacf) at Debugger+0x46 __panic(c07bd400,9d,c07bd45d,c302ac08,9) at __panic+0x13d exit1(c4005000,9,decaca10,c4005000,c2f0a000) at exit1+0x418 sigexit(c4005000,9,c2f0aaa8,0,c07bfdc9) at sigexit+0xd7 postsig(9) at postsig+0x171 thread_export_context(c4005000,1,c2d00780,0,0) at thread_export_context+0x116 thread_userret(c4005000,decacd48) at thread_userret+0x1b9 userret(c4005000,decacd48,0,3,0) at userret+0x58 syscall(83c002f,819002f,bfa6002f,81ff200,8) at syscall+0x2d9 Xint0x80_syscall() at Xint0x80_syscall+0x1d --- syscall (32, FreeBSD ELF32, getsockname), eip = 0x2920cd8b, esp = 0xbfacdd74, ebp = 0xbfacdda0 --- db> sh locks exclusive sleep mutex process lock r = 0 (0xc302ac74) locked @ /usr/src/sys/kern/kern_exit.c:134 Unfortunately I have been unable to get a dump on either machine. Sadly, it's not not reproducible. Gavin