https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282445
Bug ID: 282445
Summary: Wrong stack() info in dtrace
Product: Base System
Version: 14.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Let's assign an ip address to vtnet0 interface in bhyve virtual machine. And
after that let's make sure that the routes are added to the OS and we have
internet connection from it. Then, let's run the following:
dtrace -n 'fbt:kernel:rtnl_handle_message:entry { stack(); }'
This is just an example. It can be anything.
On my kernel, it gives me the following stack trace:
<...>
kernel`nl_taskqueue_handler+0x78b
kernel`taskqueue_run_locked+0x182
kernel`taskqueue_thread_loop+0xc2
kernel`fork_exit+0x7f
kernel`0xffffffff80fdc21e
Here, only the first 0xffffffff80fdc21e frame is correct. When I try to do l
*fork_exit+0x7f, for example, I get after the current execution point in the
stack trace. I guess that's a bug with how dtrace handles name printing.
Because the pure hash value seems to be okay.
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