treewide: refresh kmalloc_obj() conversionsgrafted

This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci

This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.

Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.

Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/rust/helpers/rbtree.c b/rust/helpers/rbtree.c
new file mode 100644
index 000000000..a85defb22
--- /dev/null
+++ b/rust/helpers/rbtree.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/rbtree.h>
+
+__rust_helper void rust_helper_rb_link_node(struct rb_node *node,
+					    struct rb_node *parent,
+					    struct rb_node **rb_link)
+{
+	rb_link_node(node, parent, rb_link);
+}
+
+__rust_helper struct rb_node *rust_helper_rb_first(const struct rb_root *root)
+{
+	return rb_first(root);
+}
+
+__rust_helper struct rb_node *rust_helper_rb_last(const struct rb_root *root)
+{
+	return rb_last(root);
+}