From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Fri, 12 Oct 2018 18:47:53 +0000 (-0400)
Subject: Fix: adapt to kernel relative references
X-Git-Tag: v2.12.0-pre~109
X-Git-Url: http://git.lttng.org/?a=commitdiff_plain;h=c1b0a62512c0dad3c79f3eb29ed29d3a702f2274;hp=c1b0a62512c0dad3c79f3eb29ed29d3a702f2274;p=lttng-modules.git

Fix: adapt to kernel relative references

Upstream Linux commit 46e0c9be20 introduces relative references in the
struct tracepoint array of pointers.

Up to (including) v4.19-rc7, the upstream kernel has a type mismatch bug
that allows it to pass an out-of-bound end of array to modules
coming/going notifiers.

The fix for upstream Linux is to introduce a new type: tracepoint_ptr_t,
which can be used to adequately iterate on the array. It is introduced
prior to v4.19 as commit 9c0be3f6b5d77 "tracepoint: Fix tracepoint array
element size mismatch".

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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