On 7/14/25 18:34, Till Wegmüller wrote:
Hi Paul
Have you tried mdb? We have our own debug data format called CTF and
depending on how you compiled your file the DWARF data may be stripped
from the binary.
If you want a stacktrace from mdb you can type ::stack
For more detailed usage of mdb check the manpage or ask on #illumos
IRC or any illumos mailinglist. There are not many illumos devs here
on this list and I have never used gdb. Only ever mdb.
Hi
I haven't tried mdb (I'm not a kernel developer).
This just looks like a kernel bug to me (in both Solaris 11.4 and illumos).
The Solaris 11.4 man page says (and I guess illumos is the same):
ETXTBSY The file is a pure procedure (shared text) file that is
being executed and oflagis O_WRONLYor O_RDWR.
The first thing that my testcase does is an open exactly like that with
O_WRONLY|O_CREAT|O_TRUNC
This succeeds and crashes the exe. Maybe the kernel is only checking for
O_WRONLY or O_RDWR?
I also wonder if this is not a security issue.
A+
Paul
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