----- "Joe Porter" <joe.porter@xxxxxxxx> wrote: > On Tue, 2008-11-18 at 14:05 -0500, Dave Anderson wrote: > > Hi Joe, > > > > Can you verify that the attached patch works with your kdump? > > > > Thanks, > > Dave > > > > Hi Dave, > > The 2.6.25 kernel I built using "make defconfig" DID NOT exhibit this > bug. > > The 2.6.25 kernel I built using "make oldconfig" DOES have the bug. > > So this could happen in any distro with the right combination of > kernel config options > (I would think after 2.6.25). > > I'll see if I can work out what options trigger this. > > I suspect it's either the CPU optimization choice or some SMP or > real-timey option. > > I'll let you know what I find out. > > In the meantime your patch was sufficient to get around this. Excellent -- thanks for your patience and time spent on this. The fix is queued for the next release. Thanks, Dave > > > Below I show crash-4.0-7.4 failing and then your patched > crash-4.0-7.4: > > > [root@beebo 11-18-08.1647.31]# /usr/src/crash-4.0-7.4.orig/crash > vmcore vmlinux > > crash 4.0-7.4 > Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Red Hat, Inc. > Copyright (C) 2004, 2005, 2006 IBM Corporation > Copyright (C) 1999-2006 Hewlett-Packard Co > Copyright (C) 2005, 2006 Fujitsu Limited > Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. > Copyright (C) 2005 NEC Corporation > Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. > Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. > This program is free software, covered by the GNU General Public > License, > and you are welcome to change it and/or distribute copies of it under > certain conditions. Enter "help copying" to see the conditions. > This program has absolutely no warranty. Enter "help warranty" for > details. > > GNU gdb 6.1 > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and > you are > welcome to change it and/or distribute copies of it under certain > conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for > details. > This GDB was configured as "i686-pc-linux-gnu"... > > please wait... (determining panic task) > crash: invalid structure member offset: user_regs_struct_ebp > FILE: netdump.c LINE: 687 FUNCTION: get_netdump_panic_task() > > [/usr/src/crash-4.0-7.4.orig/crash] error trace: 80e0a0d => 8154325 => > 814fe0b => 813ec91 > > 813ec91: OFFSET_verify+126 > 814fe0b: get_netdump_panic_task+1196 > 8154325: get_kdump_panic_task+11 > 80e0a0d: get_dumpfile_panic_task+153 > > [root@beebo 11-18-08.1647.31]# > > ----------------------------------------------------------------------------------------- > > [root@beebo 11-18-08.1647.31]# /usr/src/crash-4.0-7.4.patched/crash > vmcore vmlinux > > crash 4.0-7.4 > Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Red Hat, Inc. > Copyright (C) 2004, 2005, 2006 IBM Corporation > Copyright (C) 1999-2006 Hewlett-Packard Co > Copyright (C) 2005, 2006 Fujitsu Limited > Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. > Copyright (C) 2005 NEC Corporation > Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. > Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. > This program is free software, covered by the GNU General Public > License, > and you are welcome to change it and/or distribute copies of it under > certain conditions. Enter "help copying" to see the conditions. > This program has absolutely no warranty. Enter "help warranty" for > details. > > GNU gdb 6.1 > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and > you are > welcome to change it and/or distribute copies of it under certain > conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for > details. > This GDB was configured as "i686-pc-linux-gnu"... > > KERNEL: vmlinux > DUMPFILE: vmcore > CPUS: 8 > DATE: Tue Nov 18 16:46:59 2008 > UPTIME: 00:01:30 > LOAD AVERAGE: 0.85, 0.33, 0.12 > TASKS: 148 > NODENAME: beebo > RELEASE: 2.6.25-oldconfig > VERSION: #1 SMP PREEMPT Tue Nov 18 16:31:40 EST 2008 > MACHINE: i686 (3657 Mhz) > MEMORY: 4 GB > PANIC: "SysRq : Trigger a crashdump" > PID: 5504 > COMMAND: "crashme" > TASK: f6f1b400 [THREAD_INFO: f7072000] > CPU: 5 > STATE: TASK_RUNNING (SYSRQ) > > crash> -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
