Re: [Crash-utility] [PATCH]fix kmem -s(slab) to support Linux 3.7 and later

At 2013-3-16 1:47, Dave Anderson wrote: Hi Dave, The following is initial information. Crash fails to initialize slab. <cut> [root@localhost crash-6.1.4]# ./crash crash 6.1.4 Copyright (C) 2002-2013 Red Hat, Inc. Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation Copyright (C) 1999-2006 Hewlett-Packard Co Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. Copyright (C) 2005, 2011 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 (GDB) 7.3.1 Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu"... crash: read error: kernel virtual address: ffffffff8160edc0 type: "cpu_possible_mask" crash: this kernel may be configured with CONFIG_STRICT_DEVMEM, which renders /dev/mem unusable as a live memory source. crash: trying /proc/kcore as an alternative to /dev/mem crash: invalid kernel virtual address: e860000000000e04 type: "array cache limit" crash: unable to initialize kmem slab cache subsystem KERNEL: /usr/lib/debug/lib/modules/3.8.0/vmlinux DUMPFILE: /proc/kcore CPUS: 2 DATE: Thu Mar 14 15:22:33 2013 UPTIME: 03:35:12 LOAD AVERAGE: 0.08, 0.03, 0.05 TASKS: 186 NODENAME: localhost.localdomain RELEASE: 3.8.0 VERSION: #1 SMP Mon Mar 11 14:57:49 CST 2013 MACHINE: x86_64 (2926 Mhz) MEMORY: 1.2 GB PID: 5225 COMMAND: "crash" TASK: ffff88003762a0c0 [THREAD_INFO: ffff880037a5c000] CPU: 1 STATE: TASK_RUNNING (ACTIVE) crash> <cut> And when using kmem -s command, crash shows, <cut> crash> kmem -s kmem: kmem cache slab subsystem not available crash> <cut> -- -- Regards Qiao Nuohan