[Bug gdb/25215] systemtap probes appear to break armhf gdb with arm64 kernel

michael.hudson at canonical dot com sourceware-bugzilla@sourceware.org
Fri Nov 22 23:01:00 GMT 2019


https://sourceware.org/bugzilla/show_bug.cgi?id=25215

--- Comment #3 from Michael Hudson-Doyle <michael.hudson at canonical dot com> ---
(In reply to Sergio Durigan Junior from comment #1)
> Thanks for the bug report.
> 
> This does not ring any bells offhand.

Oh, er, good.

> Can you provide more details?

> A coredump of GDB would be great.

gdb isn't crashing though. Do you mean just gcore -p gdb after the problem has
occurred?

> If this is not possible, then I'd
> appreciate some more detailed instructions on how to reproduce this.

What I did was boot an arm64 vm running ubuntu 19.10 (on our internal cloud, I
guess it would be interesting to try this on an amazon a1 instance). Then as
root:

lxd init
lxc launch ubuntu-daily:disco disco
lxc exec disco -- sh -c 'apt update && apt install -y gdb'
lxc exec disco -- gdb /bin/true
<type r>

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