tree ae6824c572c54aa2833335237a878ba3556e52fe
parent a9f96c0288db784eeea604762f202609b3f7ea3c
author Paul Chaignon <paul.chaignon@gmail.com> 1529250438 +0200
committer yonghong-song <ys114321@gmail.com> 1529250438 -0700

Fix nested dereference rewrites (#1835)

* Fix nested rewrites dereferences

When the rewriter meets a dereference of a member dereference it
fails to properly rewrite them into calls to bpf_probe_read.  The
reason is that Clang is unable to track the position of rewritten
text, but we can accommodate this by inserting text around the
dereference instead of completely rewriting it.  We are already
doing that for member dereference, but not for simple dereference.

* Test for the rewrite of nested dereferences