Re: Debugging with rr

2020-11-04 Thread Peter Maydell 
On Wed, 4 Nov 2020 at 06:11, Sai Pavan Boddu  wrote:
> I tired debugging QEMU with rr version 4.1.0, on ubuntu 16.04. And I see 
> below errors, any suggestions on the issue would be helpful

rr version 4.1.0 is pretty old -- it was released in 2016.
QEMU does some complicated stuff that in the past rr
needed fixes to handle. Start by trying the most recent
rr release (or rr from git if you like). If that doesn't
work then the rr folks are pretty responsive to bug reports.

thanks
-- PMM

Debugging with rr

2020-11-03 Thread Sai Pavan Boddu 
Hi,

I tired debugging QEMU with rr version 4.1.0, on ubuntu 16.04. And I see below 
errors, any suggestions on the issue would be helpful

rr: /build/rr-jR8ti5/rr-4.1.0/src/Event.h:304: SyscallEvent& Event::Syscall(): 
Assertion `is_syscall_event()' failed.

Regards,
Sai Pavan