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, 44 insertions, 0 deletions

diff --git a/security/landlock/trace.h b/security/landlock/trace.h
new file mode 100644
index 000000000..7be98e748
--- /dev/null
+++ b/security/landlock/trace.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Landlock - Tracepoint helpers
+ *
+ * Copyright © 2025 Microsoft Corporation
+ * Copyright © 2026 Cloudflare, Inc.
+ */
+
+#ifndef _SECURITY_LANDLOCK_TRACE_H
+#define _SECURITY_LANDLOCK_TRACE_H
+
+#include "access.h"
+
+struct landlock_hierarchy;
+struct landlock_request;
+
+#ifdef CONFIG_TRACEPOINTS
+
+void landlock_trace_free_domain(
+	const struct landlock_hierarchy *const hierarchy);
+
+void landlock_trace_denial(
+	const struct landlock_request *const request,
+	const struct landlock_hierarchy *const youngest_denied,
+	const access_mask_t missing, const bool same_exec, const bool logged);
+
+#else /* CONFIG_TRACEPOINTS */
+
+static inline void
+landlock_trace_free_domain(const struct landlock_hierarchy *const hierarchy)
+{
+}
+
+static inline void
+landlock_trace_denial(const struct landlock_request *const request,
+		      const struct landlock_hierarchy *const youngest_denied,
+		      const access_mask_t missing, const bool same_exec,
+		      const bool logged)
+{
+}
+
+#endif /* CONFIG_TRACEPOINTS */
+
+#endif /* _SECURITY_LANDLOCK_TRACE_H */