bpf: mark a NULL kfunc argument precisegrafted

check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.

Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/arch/mips/kvm/Makefile b/arch/mips/kvm/Makefile
new file mode 100644
index 000000000..805aeea21
--- /dev/null
+++ b/arch/mips/kvm/Makefile
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0
+# Makefile for KVM support for MIPS
+#
+
+include $(srctree)/virt/kvm/Makefile.kvm
+
+ccflags-y += -Ivirt/kvm -Iarch/mips/kvm
+
+kvm-$(CONFIG_CPU_HAS_MSA) += msa.o
+
+kvm-y +=    mips.o emulate.o entry.o \
+	    interrupt.o stats.o \
+	    fpu.o
+kvm-y += hypcall.o
+kvm-y += mmu.o
+kvm-$(CONFIG_CPU_LOONGSON64) += loongson_ipi.o
+
+kvm-y		+= vz.o
+obj-$(CONFIG_KVM)	+= kvm.o
+obj-y			+= tlb.o