Re: [Crash-utility] Retrieve pointer value for scripting

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(a)alcatel-lucent.com&gt; 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 > > -- > Crash-utility mailing list > Crash-utility(a)redhat.com > https://www.redhat.com/mailman/listinfo/crash-utility > -- BKS