From owner-svn-src-all@FreeBSD.ORG Sat Oct 24 20:28:42 2009 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B00F3106568B; Sat, 24 Oct 2009 20:28:42 +0000 (UTC) (envelope-from marcel@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 9F5A58FC0C; Sat, 24 Oct 2009 20:28:42 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id n9OKSgIr010199; Sat, 24 Oct 2009 20:28:42 GMT (envelope-from marcel@svn.freebsd.org) Received: (from marcel@localhost) by svn.freebsd.org (8.14.3/8.14.3/Submit) id n9OKSg2u010197; Sat, 24 Oct 2009 20:28:42 GMT (envelope-from marcel@svn.freebsd.org) Message-Id: <200910242028.n9OKSg2u010197@svn.freebsd.org> From: Marcel Moolenaar Date: Sat, 24 Oct 2009 20:28:42 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r198451 - head/sys/ia64/include X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 24 Oct 2009 20:28:42 -0000 Author: marcel Date: Sat Oct 24 20:28:42 2009 New Revision: 198451 URL: http://svn.freebsd.org/changeset/base/198451 Log: A 32KB kernel stack is not quite enough. The new USB stack is a bit more stack hungry as compared to the old one that my RX2660 gets a machine check and spontaneously reboots at the time the USB DVD drive is found and attached to CAM as a mass storage device. This doesn't happen always, but definitely varies per kernel build. Likewise when using a 128-byte printf buffer. The additional 128 bytes that printf needs seems to be enough to have the memory stack and register stack collide and causing a machine check. Thus: Bump KSTACK_PAGES from 4 to 5. Modified: head/sys/ia64/include/param.h Modified: head/sys/ia64/include/param.h ============================================================================== --- head/sys/ia64/include/param.h Sat Oct 24 20:07:17 2009 (r198450) +++ head/sys/ia64/include/param.h Sat Oct 24 20:28:42 2009 (r198451) @@ -92,7 +92,7 @@ #define MAXPAGESIZES 1 /* maximum number of supported page sizes */ #ifndef KSTACK_PAGES -#define KSTACK_PAGES 4 /* pages of kernel stack */ +#define KSTACK_PAGES 5 /* pages of kernel stack */ #endif #define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */