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, 98 insertions, 0 deletions

diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
new file mode 100644
index 000000000..0474604ab
--- /dev/null
+++ b/arch/x86/kvm/Makefile
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: GPL-2.0
+
+ccflags-y += -I $(srctree)/arch/x86/kvm
+ccflags-$(CONFIG_KVM_WERROR) += -Werror
+
+include $(srctree)/virt/kvm/Makefile.kvm
+
+kvm-y			+= x86.o emulate.o irq.o lapic.o cpuid.o msrs.o pmu.o regs.o \
+			   mtrr.o debugfs.o mmu/mmu.o mmu/page_track.o mmu/spte.o
+
+kvm-$(CONFIG_X86_64) += mmu/tdp_iter.o mmu/tdp_mmu.o
+kvm-$(CONFIG_KVM_IOAPIC) += i8259.o i8254.o ioapic.o
+kvm-$(CONFIG_KVM_HYPERV) += hyperv.o
+kvm-$(CONFIG_KVM_XEN)	+= xen.o
+kvm-$(CONFIG_KVM_SMM)	+= smm.o
+
+kvm-intel-y		+= vmx/vmx.o vmx/vmenter.o vmx/pmu_intel.o vmx/vmcs12.o \
+			   vmx/nested.o vmx/posted_intr.o vmx/main.o
+
+kvm-intel-$(CONFIG_X86_SGX_KVM)	+= vmx/sgx.o
+kvm-intel-$(CONFIG_KVM_HYPERV)	+= vmx/hyperv.o vmx/hyperv_evmcs.o
+kvm-intel-$(CONFIG_KVM_INTEL_TDX)	+= vmx/tdx.o
+
+kvm-amd-y		+= svm/svm.o svm/vmenter.o svm/pmu.o svm/nested.o svm/avic.o
+
+kvm-amd-$(CONFIG_KVM_AMD_SEV)	+= svm/sev.o
+kvm-amd-$(CONFIG_KVM_HYPERV)	+= svm/hyperv.o
+
+ifdef CONFIG_HYPERV
+kvm-y			+= kvm_onhyperv.o
+kvm-intel-y		+= vmx/vmx_onhyperv.o vmx/hyperv_evmcs.o
+kvm-amd-y		+= svm/svm_onhyperv.o
+endif
+
+obj-$(CONFIG_KVM_X86)	+= kvm.o
+obj-$(CONFIG_KVM_INTEL)	+= kvm-intel.o
+obj-$(CONFIG_KVM_AMD)	+= kvm-amd.o
+
+AFLAGS_svm/vmenter.o    := -iquote $(obj)
+$(obj)/svm/vmenter.o: $(obj)/kvm-asm-offsets.h
+
+AFLAGS_vmx/vmenter.o    := -iquote $(obj)
+$(obj)/vmx/vmenter.o: $(obj)/kvm-asm-offsets.h
+
+$(obj)/kvm-asm-offsets.h: $(obj)/kvm-asm-offsets.s FORCE
+	$(call filechk,offsets,__KVM_ASM_OFFSETS_H__)
+
+targets += kvm-asm-offsets.s
+clean-files += kvm-asm-offsets.h
+
+
+# Fail the build if there is unexpected EXPORT_SYMBOL_GPL (or EXPORT_SYMBOL)
+# usage.  All KVM-internal exports should use EXPORT_SYMBOL_FOR_KVM_INTERNAL.
+# Only a handful of exports intended for other modules (VFIO, KVMGT) should
+# use EXPORT_SYMBOL_GPL, and EXPORT_SYMBOL should never be used.
+ifdef CONFIG_KVM_X86
+# Search recursively for whole words and print line numbers.  Filter out the
+# allowed set of exports, i.e. those that are intended for external usage.
+exports_grep_trailer := --include='*.[ch]' -nrw $(srctree)/virt/kvm $(srctree)/arch/x86/kvm | \
+			grep -v -e kvm_page_track_register_notifier \
+				-e kvm_page_track_unregister_notifier \
+				-e kvm_write_track_add_gfn \
+				-e kvm_write_track_remove_gfn \
+				-e kvm_get_kvm \
+				-e kvm_get_kvm_safe \
+				-e kvm_put_kvm
+
+# Force grep to emit a goofy group separator that can in turn be replaced with
+# the above newline macro (newlines in Make are a nightmare).  Note, grep only
+# prints the group separator when N lines of context are requested via -C,
+# a.k.a. --NUM.  Simply request zero lines.  Print the separator only after
+# filtering out expected exports to avoid extra newlines in the error message.
+define get_kvm_exports
+$(shell grep "$(1)" -C0 $(exports_grep_trailer) | grep "$(1)" -C0 --group-separator="!SEP!")
+endef
+
+define check_kvm_exports
+nr_kvm_exports := $(shell grep "$(1)" $(exports_grep_trailer) | wc -l)
+
+ifneq (0,$$(nr_kvm_exports))
+$$(error ERROR ***\
+$$(newline)found $$(nr_kvm_exports) unwanted occurrences of $(1):\
+$$(newline)  $(subst !SEP!,$$(newline) ,$(call get_kvm_exports,$(1)))\
+$$(newline)in directories:\
+$$(newline)  $(srctree)/arch/x86/kvm\
+$$(newline)  $(srctree)/virt/kvm\
+$$(newline)Use EXPORT_SYMBOL_FOR_KVM_INTERNAL, not $(1))
+endif # nr_kvm_exports != 0
+undefine nr_kvm_exports
+endef # check_kvm_exports
+
+$(eval $(call check_kvm_exports,EXPORT_SYMBOL_GPL))
+$(eval $(call check_kvm_exports,EXPORT_SYMBOL))
+
+undefine check_kvm_exports
+undefine get_kvm_exports
+undefine exports_grep_trailer
+endif # CONFIG_KVM_X86