help with bug 1920913: SIGILL running java, unimplemented opcode 0x0000

[Jonathan Albrecht]

I'm new to qemu and I've been trying to debug https://bugs.launchpad.net/qemu/+bug/1920913 but am now stuck and was wondering if I could get some help on where to go next.

 

I've put everything I've found in the comments starting at https://bugs.launchpad.net/qemu/+bug/1920913/comments/8 but basically it looks to me like the start of one of the instructions (ebde f000 ec51; tmy -81920(%r15),222) is getting overwritten from 0xebde to 0x0000 somehow.

 

Any suggestions on where to look or what other info I could provide would be greatly appreciated.
 

Thanks,

 

Jonathan Albrecht

Linux on IBM Z Open Source Ecosystem
IBM Canada Toronto Lab