tree 8d86fd7d05dd35623becb795b6b41d9c46013278
parent 677bbc7053d6a1a1be24d41b968ebb4cb11da9f4
author Luis R. Rodriguez <mcgrof@kernel.org> 1468266274 -1000
committer Luis R. Rodriguez <mcgrof@kernel.org> 1470186307 -0700

kprobes: port blacklist kprobes to linker table

kprobe makes use of two sections, the one dealing with the actual
kprobes was recently ported using the standard section range API.
The blacklist functionality of kprobes is still using a custom
section and declaring its custom section using the linker script
as follows:

type  Linux-section custom section name  begin                    end
table .init.data    _kprobe_blacklist    __start_kprobe_blacklist __stop_kprobe_blacklist

This ports the _kprobe_blacklist custom section to the standard
Linux linker table API allowing us remove all the custom blacklist
kprobe section declarations from the linker script.

This has been tested by trying to register a kprobe on a blacklisted
symbol (these are declared with NOKPROBE_SYMBOL()), and confirms that
this fails to work as expected. This was tested with:

 # insmod samples/kprobes/kprobe_example.ko symbol="get_kprobe"

This fails to load as expected with:

insmod: ERROR: could not insert module samples/kprobes/kprobe_example.ko: Invalid parameters

v3: this patch was introduced in this series

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>