Messages in this thread | | | Date | Fri, 13 Apr 2012 06:21:54 -0600 | From | David Ahern <> | Subject | Re: [PATCH 1/3] perf, tool: Force guest machine definition option |
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On 4/13/12 5:32 AM, Jiri Olsa wrote: >> Even with guestmount specified you can hit this path -- e.g., no >> pid-based directory under guestmount for a VM. > > hm, something's wrong anyway.. > > [root@dhcp-26-214 perf]# ./perf kvm --guest --guestkallsyms=./kallsyms record -p 1791 > ^C[ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.013 MB perf.data.guest (~576 samples) ] > [root@dhcp-26-214 perf]# ./perf kvm --guest --guestkallsyms=./kallsyms report --stdio > Segmentation fault (core dumped) > > it segfaults on guest mmap (attached bt) having NULL machine, > since no guest kernel buildid/dso was stored&loaded.. > the host/guest machines code seems too 'complex' ;)
That was fixed on Monday I believe. Patch is in Arnaldo's urgent queue.
David
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