I have now tried this on someone else's Mac Mini, this one running 16.04.1.
With the stock qemu (1:2.5+dfsg-5ubuntu10.5), it crashes in apparently the same way as mine was doing originally: Oct 5 14:59:49 s1 kernel: [3982196.302758] qemu-system-x86[20590]: segfault at 55fc165caa20 ip 000055fd12d76ab7 sp 00007ffdec4cfab0 error 4 in qemu-system-x86_64[55fd1294f000+640000] Which is good, as it shows the original problem is definitely a software problem in qemu. Then I built qemu-2.7.0 from source on this machine. Unfortunately I don't seem able to attach gdb: using "gdb -p <pid>" I get: Warning: Cannot insert breakpoint -1. Cannot access memory at address 0x202210 (gdb) 0x00007f199113ff51 in ?? () (gdb) cont Continuing. Warning: Cannot insert breakpoint -1. Cannot access memory at address 0x202210 Command aborted. (gdb) I just have to run without gdb. And this time, it ran to completion without any malloc errors. So I can't yet conclude whether there is also a hardware issue, until I upgrade the local machine to 16.04 (at which point I'll lose the ability to debug the issue in 14.04, but then again, at that point I probably won't care :-) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1630226 Title: segfault in qemu-system-x86_64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1630226/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
