From owner-freebsd-bugs@FreeBSD.ORG Thu Jul 14 12:55:54 2005 Return-Path: X-Original-To: freebsd-bugs@FreeBSD.org Delivered-To: freebsd-bugs@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 33F0116A41C; Thu, 14 Jul 2005 12:55:54 +0000 (GMT) (envelope-from marcolz@stack.nl) Received: from mailhost.stack.nl (vaak.stack.nl [131.155.140.140]) by mx1.FreeBSD.org (Postfix) with ESMTP id CB55B43D45; Thu, 14 Jul 2005 12:55:53 +0000 (GMT) (envelope-from marcolz@stack.nl) Received: from hammer.stack.nl (hammer.stack.nl [IPv6:2001:610:1108:5010::153]) by mailhost.stack.nl (Postfix) with ESMTP id 54B0BA30A4; Thu, 14 Jul 2005 14:55:52 +0200 (CEST) Received: by hammer.stack.nl (Postfix, from userid 333) id 322B16462; Thu, 14 Jul 2005 14:55:52 +0200 (CEST) Date: Thu, 14 Jul 2005 14:55:52 +0200 From: Marc Olzheim To: FreeBSD-gnats-submit@FreeBSD.org, freebsd-bugs@FreeBSD.org Message-ID: <20050714125552.GA26456@stack.nl> References: <200507130926.j6D9QB6T001062@synth.ilse.net> <200507130930.j6D9UDHL028973@freefall.freebsd.org> <20050713200405.GA66432@stack.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050713200405.GA66432@stack.nl> X-Operating-System: FreeBSD hammer.stack.nl 5.4-STABLE FreeBSD 5.4-STABLE X-URL: http://www.stack.nl/~marcolz/ User-Agent: Mutt/1.5.9i Cc: Marc Olzheim Subject: Re: kern/83375: Fatal trap 12 cloning a pty X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jul 2005 12:55:54 -0000 And another FreeBSD 5.4-STABLE trace, now the 'close()' variant: Fatal trap 12: page fault while in kernel mode cpuid = 2; apic id = 06 fault virtual address = 0x3b26cff8 fault code = supervisor read, page not present instruction pointer = 0x8:0xc0554a9c stack pointer = 0x10:0xebd4bb48 frame pointer = 0x10:0xebd4bb4c code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 54879 (screen) [thread pid 54879 tid 100324 ] Stopped at 0xc0554a9c = ptcclose+0x10: movl 0xc06fcc80 = linesw(,%eax,4),%eax db> tr Tracing pid 54879 tid 100324 td 0xc6409600 ptcclose(c6814a00,7,2000,c6409600,c06fcf40) at 0xc0554a9c = ptcclose+0x10 spec_close(ebd4bb90,ebd4bbb8,c057e18a,ebd4bb90,c0716660) at 0xc04f0357 = spec_close+0x277 spec_vnoperate(ebd4bb90) at 0xc04ef49f = spec_vnoperate+0x13 vn_close(c67bc318,7,c7434900,c6409600,c6409600) at 0xc057e18a = vn_close+0x5a vn_closefile(c6ad0d48,c6409600) at 0xc057f05e = vn_closefile+0xaa fdrop_locked(c6ad0d48,c6409600,c5628a54,0,c06b951b) at 0xc050b394 = fdrop_locked+0x88 fdrop(c6ad0d48,c6409600,ffffffdf,80a767c,0) at 0xc050b304 = fdrop+0x24 closef(c6ad0d48,c6409600,0,c067d1f8,5) at 0xc0509e0f = closef+0x313 close(c6409600,ebd4bd04,1,1,246) at 0xc050792f = close+0x1a3 syscall(bfbf002f,2f,bfbf002f,80a5000,80a5000) at 0xc067d05b = syscall+0x227 Xint0x80_syscall() at 0xc066c95f = Xint0x80_syscall+0x1f --- syscall (6, FreeBSD ELF32, close), eip = 0x2816c79b, esp = 0xbfbfd23c, ebp = 0xbfbfd258 --- db>