Re: [PATCH 0/3] Fix DTrace on modern kernels and in containers

Another thing that is not working due to containers/namespaces is this =
common filter pattern: =E2=80=9C/pid =3D=3D $target/=E2=80=9C. It has =
the same problem that `pid` and `$target` are evaluated in different PID =
namespaces. But I thought that was better to leave for a separate =
thread.

--
/Jacob Carlborg

> On 20 Jul 2026, at 18:33, Kris Van Hees <[email protected]> =
wrote:
>=20
> Thanks for reporting these issues and sending patches.  It ceetainly =
highlights
> an area where our testing is lacking, i.e. containers and related =
namespace
> issues.  That will need some attention as well.
>=20
>=20
> On Mon, Jul 20, 2026 at 03:30:57PM +0200, Jacob Carlborg wrote:
>> Hi, I've created three patches for the issues I've encountered when =
trying to
>> get DTrace to work in my environments. One environment is on my local =
computer
>> running macOS ARM64 using Docker through OrbStack. The other is our =
Kubernetes
>> cluster
>>=20
>> Hi, I've created three patches for the issues I've encountered when =
trying to
>> get DTrace to work in my environments. One environment is on my local =
computer
>> running macOS ARM64 using Docker through OrbStack. The other is our =
Kubernetes
>> cluster in the cloud. The first two issues are differences in the =
Linux kernel
>> compared to what DTrace expects. The third issue is container =
related.
>>=20
>> The OrbStack environment is running version 7.0.11 of the Linux =
kernel. The
>> Kubernetes cluster is running 6.12.85.
>>=20
>> I'll be honest, the analysis of the issues and the patches are all =
done by an
>> AI. I've verified everything manually myself.
>>=20
>> Jacob Carlborg (3):
>>  libdtrace: resolve BTF type tags when importing BTF into CTF
>>  libdtrace: derive io provider dev_name from the device model
>>  libdtrace: match BEGIN/END PID in the tracer's own PID namespace
>>=20
>> libdtrace/dt_btf.c         | 20 ++++++++++++-
>> libdtrace/dt_prov_dtrace.c | 58 =
++++++++++++++++++++++++++++++++++----
>> libdtrace/io.d.in          | 17 +++++++++--
>> 3 files changed, 86 insertions(+), 9 deletions(-)
>>=20
>> --
>> 2.50.1 (Apple Git-155)
>>=20
>>=20
>>=20