[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] xen-4.6: xenstored crashes during domain->interface access
Hi, while playing around with xen-4.6 I stumbled over an odd problem and am wondering whether anybody has seen the same. A method to relatively quickly reproduce this for me seems to: - Start one domU (PV or HVM does not seem to matter) - Repeatedly call xenstore-ls a few times I think I never got beyond 10 repeats when the xenstore-ls call suddenly locks up and xenstored crashes with a SIGBUS error. In the majority of cases (I think I saw one different), the crash happens while accessing conn->domain->interface in tools/xenstore/xenstored_domain.c:domain_can_read(). Looking at the corefile produced by xenstored I now got at least one case where the pointer still matches the previously mapped value. Though I think I had also at least one run (with less debugging added) where it seemed to be really wrong. There is more info at [1] in case someone is interested. I need to repeat a few more times to see how consistent the whole thing is. Does this happen for anybody else? Any advice what I should look at (in the sense of gathering better data)? Thanks, Stefan [1] https://bugs.launchpad.net/ubuntu/+source/xen/+bug/1538049 Attachment:
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