From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753208AbXDKQGj (ORCPT ); Wed, 11 Apr 2007 12:06:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753215AbXDKQGj (ORCPT ); Wed, 11 Apr 2007 12:06:39 -0400 Received: from saraswathi.solana.com ([198.99.130.12]:46126 "EHLO saraswathi.solana.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753208AbXDKQGh (ORCPT ); Wed, 11 Apr 2007 12:06:37 -0400 Date: Wed, 11 Apr 2007 12:01:26 -0400 From: Jeff Dike To: Andrew Morton Cc: LKML , uml-devel Subject: [PATCH 3/4] UML - Dump core on panic Message-ID: <20070411160126.GA6329@c2.user-mode-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Dump core after a panic. This will provide better debugging information than is currently available. Signed-off-by: Jeff Dike -- arch/um/include/os.h | 1 + arch/um/kernel/um_arch.c | 2 +- arch/um/os-Linux/util.c | 6 ++++++ 3 files changed, 8 insertions(+), 1 deletion(-) Index: linux-2.6.21-mm/arch/um/include/os.h =================================================================== --- linux-2.6.21-mm.orig/arch/um/include/os.h 2007-04-06 10:36:33.000000000 -0400 +++ linux-2.6.21-mm/arch/um/include/os.h 2007-04-06 10:38:54.000000000 -0400 @@ -281,6 +281,7 @@ extern void setup_machinename(char *mach extern void setup_hostinfo(char *buf, int len); extern int setjmp_wrapper(void (*proc)(void *, void *), ...); extern void os_log_info(char *fmt, va_list ap); +extern void os_dump_core(void); /* time.c */ #define BILLION (1000 * 1000 * 1000) Index: linux-2.6.21-mm/arch/um/kernel/um_arch.c =================================================================== --- linux-2.6.21-mm.orig/arch/um/kernel/um_arch.c 2007-04-06 10:37:48.000000000 -0400 +++ linux-2.6.21-mm/arch/um/kernel/um_arch.c 2007-04-06 10:38:05.000000000 -0400 @@ -474,7 +474,7 @@ static int panic_exit(struct notifier_bl show_regs(&(current->thread.regs)); bust_spinlocks(0); uml_exitcode = 1; - machine_halt(); + os_dump_core(); return 0; } Index: linux-2.6.21-mm/arch/um/os-Linux/util.c =================================================================== --- linux-2.6.21-mm.orig/arch/um/os-Linux/util.c 2007-04-05 13:25:28.000000000 -0400 +++ linux-2.6.21-mm/arch/um/os-Linux/util.c 2007-04-06 10:57:55.000000000 -0400 @@ -148,3 +148,9 @@ void os_log_info(char *fmt, va_list ap) vsnprintf(&logging_buf[len], sizeof(logging_buf) - len, fmt, ap); write(logging_fd, logging_buf, strlen(logging_buf)); } + +void os_dump_core(void) +{ + signal(SIGSEGV, SIG_DFL); + abort(); +}