Crash, won't read my vmcore "crash: page excluded: kernel virtual address:"
by Tory M Blue
[root@kvm7 127.0.0.1-2014-02-07-19:17:09]# crash
/boot/System.map-2.6.32-220.el6.x86_64.debug
/usr/lib/debug/lib/modules/2.6.32-220.el6.x86_64.debug/vmlinux vmcore
crash 5.1.8-1.el6
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crash: page excluded: kernel virtual address: ffffffff81542000 type:
"cpu_possible_mask"
I can go into minimal,
nm -Bn /usr/lib/debug/lib/modules/2.6.32-220.el6.x86_64.debug/vmlinux |
grep _stext
ffffffff81000198 T _stext
cat /proc/kallsyms | grep _stext
ffffffff81000198 T _stext
If I use the System Map parm I get this warning
WARNING: kernels compiled by different gcc versions:
/usr/lib/debug/lib/modules/2.6.32-220.el6.x86_64.debug/vmlinux: 4.4.5
vmcore kernel: 4.4.6
Would really like to understand why this system crashed. I know I'm a bit
behind on my kernel versions however, but I should be able to look at this
kernel??
Thanks
Tory
10 years, 9 months
- 2
- 2
How to print the details of a structure inside a structure having a list_head entry.
by Sachin Boban
I need a help in using crash utility.
I have a structure like this
struct a {
...
struct task_struct task;
...
struct list_head list;
...
}
It is possible to get the address of the task structure using *-s
a.task*option in the *list
*command. But what if i want to get the value of a member inside task, say
*task.comm*? Is it possible to make the list command to print to it
directly?
--
Regards,
Sachin Boban
10 years, 9 months
- 2
- 1