Re: [Crash-utility] crash does not get proper backtrace?

> If so, what we (fujitsu) has to do is... > 1. confirm "virsh dump" saves registers or not. > 2. If saved, investigate the format. > 3. add crash support. (or write a program of format converter.) > > I'm sorry if I don't understand correctly. "virsh dump" does save registers, but getting them reliably from the dumpfile, and then if you do get them, the values do not necessarily work for the crash utlility's purposes. You can put some debug code in the cpu_load() function in the crash utility's qemu-load.c file. But unfortunately, that code area functionality keeps changing, and I simply take the latest code from the QEMU developers and plug it in.

Anyway, when I have tried doing so in the past, I've found register contents that were either invalid, or containing eip/esp values that could not be used for starting points for backtracing the particular task.