From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1AsdBN-0002U8-6B for user-mode-linux-devel@lists.sourceforge.net; Sun, 15 Feb 2004 23:28:45 -0800 Received: from mx1.redhat.com ([66.187.233.31]) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.30) id 1Asd81-0004XI-AL for user-mode-linux-devel@lists.sourceforge.net; Sun, 15 Feb 2004 23:25:17 -0800 From: Pete Zaitcev Message-Id: <20040215232525.7c2f38a8.zaitcev@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: [uml-devel] Segfault of UML-TT on FC1 Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Sun, 15 Feb 2004 23:25:25 -0800 To: user-mode-linux-devel@lists.sourceforge.net Cc: zaitcev@redhat.com, mingo@redhat.com, jdike@karaya.com Hi: I'm trying to run uml-patch-2.6.3-rc2-1 under Fedora Core 1, kernel 2.4.22-1.2149.nptl, glibc 2.3.2-101.1. The uml runs in TT mode (FC1 doesn't have SKAS) and segfaults while trying to do remap_data(UML_ROUND_DOWN(&__bss_start), UML_ROUND_UP(brk_start), 1); The reason is the hole between BSS and heap on my system. If I run with gdb and break at main(), an instance of uml looks like this: [zaitcev@niphredil linux-2.6.3-rc2-uml-1-t1]$ cat /proc/22415/maps a0000000-a01c6000 rwxp 00000000 03:04 442599 /q/zaitcev/uml/linux-2.6.3-rc2-uml-1-t1 a01c6000-a0294000 rw-p 00000000 00:00 0 a1f12000-a1f33000 rw-p 00000000 00:00 0 bff58000-c0000000 rwxp fff9f000 00:00 0 [zaitcev@niphredil linux-2.6.3-rc2-uml-1-t1]$ The &__bss_start at this point is a01c6000, abd brk_start is a1f33000, and so memcpy segfaults when it steps on the hole. Does anyone have a suggestion what to do about this? -- Pete ------------------------------------------------------- SF.Net is sponsored by: Speed Start Your Linux Apps Now. Build and deploy apps & Web services for Linux with a free DVD software kit from IBM. Click Now! http://ads.osdn.com/?ad_id=1356&alloc_id=3438&op=click _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel