Jeff Layton wrote: > I was trying to run crash against a live rawhide kernel and am > getting some errors when I try to start it: > > crash: invalid task address in pid_hash: ccccccccccccca84 > crash: invalid task address in pid_hash: ccccccccccccca84 > ... > crash: invalid task address in pid_hash: ccccccccccccca84 > > crash: cannot gather a stable task list via pid_hash (500 > retries) > > ...and then crash exits. There are a few messages in dmesg: > > crash memory driver: version 1.0 > crash memory driver: !page_is_ram(pfn: 61000000c) > > Relevant packages: > > kernel-2.6.24-0.62.rc3.git5.fc9.x86_64 > kernel-debuginfo-2.6.24-0.62.rc3.git5.fc9.x86_64 > crash-4.0-4.10.x86_64 > > ... the host is a FV xen guest (but that shouldn't matter, should > it?). > > I'm hoping I'm just doing something wrong, but I don't see anything > right offhand. > Hard to do anything wrong, i.e., you just have to enter "crash". With a kernel that new, it certainly could be shifting sands syndrome. It did get quite a long way before failing. I wonder if something's changed upstream associated with the pid_hash code? Can you verify that the tt->refresh_hash_table gets set to refresh_hlist_task_table_v2()?

If the system is accessible to me (reply offline), I'll be happy to take a look.