From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 2 Sep 2026 15:31:14 -0700 Subject: treewide: refresh kmalloc_obj() conversions 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 --- scripts/Makefile.gcc-plugins | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 scripts/Makefile.gcc-plugins (limited to 'scripts/Makefile.gcc-plugins') diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins new file mode 100644 index 000000000..b0e1423b0 --- /dev/null +++ b/scripts/Makefile.gcc-plugins @@ -0,0 +1,29 @@ +# SPDX-License-Identifier: GPL-2.0 + +gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += latent_entropy_plugin.so +gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) \ + += -DLATENT_ENTROPY_PLUGIN +ifdef CONFIG_GCC_PLUGIN_LATENT_ENTROPY + DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable -ULATENT_ENTROPY_PLUGIN +endif +export DISABLE_LATENT_ENTROPY_PLUGIN + +# All the plugin CFLAGS are collected here in case a build target needs to +# filter them out of the KBUILD_CFLAGS. +GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y)) -DGCC_PLUGINS +export GCC_PLUGINS_CFLAGS + +# Add the flags to the build! +KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) + +# Some plugins are enabled outside of this Makefile, but they still need to +# be included in GCC_PLUGIN so they can get built. +gcc-plugin-external-$(CONFIG_GCC_PLUGIN_RANDSTRUCT) \ + += randomize_layout_plugin.so +gcc-plugin-external-$(CONFIG_GCC_PLUGIN_STACKLEAK) \ + += stackleak_plugin.so + +# All enabled GCC plugins are collected here for building in +# scripts/gcc-scripts/Makefile. +GCC_PLUGIN := $(gcc-plugin-y) $(gcc-plugin-external-y) +export GCC_PLUGIN -- cgit v1.3.1