2011-09-15 12:31:16 UTC
While trying to debug a kernel driver,
I was using dtrace to try and write to kernel memory.
I was trying to change the return result/parameter of a function call.
I see that copyout can be used to write to userspace memory.
I see that there are some ways to write to userspace registers.
But nothing for writing to kernel memory.
The documentation seems to have only one sentence that implies writes to
kernel memory is not allowed.
The new dtrace book does not say anything regarding this topic.
So, the question I ask to the mailing list -
is writing to kernel memory allowed in dtrace or not?
If so, anybody got a sample ?