Forgot to mentioned the following step; ;)
crash> < rd_stack_number |head -n 6crash> rd 0xffffffff81a00000 3
ffffffff81a00000: ffffffff81a8d020 ffffffff81a9a8a0 ...............
ffffffff81a00010: 0000000400000000 ........
crash> rd 0xffff88106961e000 3
ffff88106961e000: ffff884069dd8040 ffffffff81a9a8a0 @..i@...........
ffff88106961e010: 0000000400000000 ........
On 6 December 2013 15:20, Buland Kumar Singh <6b65726e656c@xxxxxxxxx> wrote:
Hi Patrick,
You can use the combination of foreach, awk and cut commands to get the
desired results.
Eg:
crash> foreach RU task|grep " stack =" |awk '{print $3}'|cut -f1 -d"," |awk '{print "rd "$1 " " 3 }' > rd_stack_number
crash> rd 0xffffffff81a00000 3
ffffffff81a00000: ffffffff81a8d020 ffffffff81a9a8a0 ...............
ffffffff81a00010: 0000000400000000 ........
crash> rd 0xffff88106961e000 3
ffff88106961e000: ffff884069dd8040 ffffffff81a9a8a0 @..i@...........
ffff88106961e010: 0000000400000000 ........
The above example is some what similar to the Louis example.
-- BKS--On 6 December 2013 14:32, Patrick Agrain <patrick.agrain@xxxxxxxxxxxxxxxxxx> wrote:
Hello,
We wish to call 'crash' with a script file to automate some basic command and output the result on a text file.
This works perfectly for basic commands such as bt, log, mod and so on, especially when no input data is required.
We try now to dump the kernel stack through a 'rd <@> <size>'.
My problem is to "extract" this <@> and to "input" it in this 'rd' command.
For the moment, I'm able to get the task_struct * with following command :
ps | grep '>' | awk '{ print $5 };'
>From that, the pointer of the thread_info would be available through (task_struct *)->stack.
But how to get all these together to finally ouptut a valid 'rd' command ?
Meaby another way to get this kernel stack dump would exist ?
Any help would be appreciate.
Regards,
Patrick Agrain
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