rust: Ignore preserve-most functions

commit bad098d76835c1379e1cf6afc935f8a7e050f83c upstream.

Neither bindgen nor Rust know about the preserve-most calling
convention, and Clang describes it as unstable. Since we aren't using
functions with this calling convention from Rust, blocklist them.

These functions are only added to the build when list hardening is
enabled, which is likely why others didn't notice this yet.

Signed-off-by: Matthew Maurer <mmaurer@google.com>
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20231031201945.1412345-1-mmaurer@google.com
[ Used Markdown for consistency with the other comments in the file. ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/rust/bindgen_parameters b/rust/bindgen_parameters
index 552d9a85925b9945f6a9712b236e564292f58f50..a721d466bee4b267156a9566712e85f36a647058 100644 (file)
--- a/rust/bindgen_parameters
+++ b/rust/bindgen_parameters
@@ -20,3 +20,7 @@
 
 # `seccomp`'s comment gets understood as a doctest
 --no-doc-comments
+
+# These functions use the `__preserve_most` calling convention, which neither bindgen
+# nor Rust currently understand, and which Clang currently declares to be unstable.
+--blocklist-function __list_.*_report