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 (Cipher TLSv1:DES-CBC3-SHA:168) (Exim 3.31-VA-mm2 #1 (Debian)) id 19wmpb-0002Vn-00 for ; Tue, 09 Sep 2003 11:03:11 -0700 Received: from gate.in-addr.de ([212.8.193.158] helo=mx.in-addr.de ident=postfix) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.22) id 19wmpa-0003wg-Ie for user-mode-linux-devel@lists.sourceforge.net; Tue, 09 Sep 2003 11:03:10 -0700 From: Lars Marowsky-Bree Message-ID: <20030909180126.GC10485@marowsky-bree.de> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Subject: [uml-devel] "Kernel panic: Segfault with no mm" Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: Date: Tue, 9 Sep 2003 20:01:26 +0200 Content-Transfer-Encoding: quoted-printable To: user-mode-linux-devel@lists.sourceforge.net Hi all, with the UML kernel on 2.4.21 I am seeing the above. I can trigger it by a NULL pointer dereference in the kernel (ie, my buggy code / module ;-). Instead of a regular panic, I get the above. It appears something is going astray with the mm handling. #0 panic (fmt=3D0xa01b8ad2 "Segfault with no mm") at panic.c:59 #1 0xa00af3b4 in segv (address=3D1074944004, ip=3D2706132208, is_write=3D0= ,=20 is_user=3D0, sc=3D0xa1468280) at trap_kern.c:119 #2 0xa00af866 in segv_handler (sig=3D11, regs=3D0xa1468280) at trap_user.c= :69 #3 0xa00b351c in sig_handler_common_tt (sig=3D11, sc_ptr=3D0x58) at trap_u= ser.c:37 #4 0xa00af990 in sig_handler (sig=3D1, sc=3D {gs =3D 0, __gsh =3D 0, fs =3D 0, __fsh =3D 0, es =3D 43, __esh =3D 0= , ds =3D 43, __dsh =3D 0, edi =3D 2694189056, esi =3D 2694189056, ebp =3D 2= 705767004, esp =3D 2705766988, ebx =3D 4294967295, edx =3D 0, ecx =3D 27057= 66824, eax =3D 2706243584, trapno =3D 13, err =3D 0, eip =3D 2706132208, cs= =3D 35, __csh =3D 0, eflags =3D 66118, esp_at_signal =3D 2705766988, ss = =3D 43, __ssh =3D 0, fpstate =3D 0x0, oldmask =3D 436281344, cr2 =3D 107494= 4004}) at trap_user.c:104 #5 I wonder whether anyone has seen that before or whether it is something peculiar to my setup. (Which also includes the aa patches for the VM) Sincerely, Lars Marowsky-Br=E9e --=20 High Availability & Clustering ever tried. ever failed. no matter. SuSE Labs try again. fail again. fail better. Research & Development, SuSE Linux AG -- Samuel Beckett ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel