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, 53 insertions, 0 deletions

diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
new file mode 100644
index 000000000..41ebc3b9a
--- /dev/null
+++ b/drivers/pci/Makefile
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the PCI bus specific drivers.
+
+obj-$(CONFIG_PCI)		+= access.o bus.o probe.o host-bridge.o \
+				   remove.o pci.o pci-driver.o search.o \
+				   rebar.o rom.o setup-res.o irq.o vpd.o \
+				   setup-bus.o vc.o mmap.o devres.o
+
+obj-$(CONFIG_PCI)		+= msi/
+obj-$(CONFIG_PCI)		+= pcie/
+obj-$(CONFIG_PCI)		+= pwrctrl/
+
+ifdef CONFIG_PCI
+obj-$(CONFIG_PROC_FS)		+= proc.o
+obj-$(CONFIG_SYSFS)		+= pci-sysfs.o slot.o
+obj-$(CONFIG_ACPI)		+= pci-acpi.o
+obj-$(CONFIG_GENERIC_PCI_IOMAP) += iomap.o
+endif
+
+obj-$(CONFIG_OF)		+= of.o
+obj-$(CONFIG_PCI_QUIRKS)	+= quirks.o
+obj-$(CONFIG_HOTPLUG_PCI)	+= hotplug/
+obj-$(CONFIG_PCI_ATS)		+= ats.o
+obj-$(CONFIG_PCI_IOV)		+= iov.o
+obj-$(CONFIG_PCI_BRIDGE_EMUL)	+= pci-bridge-emul.o
+obj-$(CONFIG_PCI_LABEL)		+= pci-label.o
+obj-$(CONFIG_X86_INTEL_MID)	+= pci-mid.o
+obj-$(CONFIG_PCI_SYSCALL)	+= syscall.o
+obj-$(CONFIG_PCI_STUB)		+= pci-stub.o
+obj-$(CONFIG_PCI_PF_STUB)	+= pci-pf-stub.o
+obj-$(CONFIG_PCI_ECAM)		+= ecam.o
+obj-$(CONFIG_PCI_P2PDMA)	+= p2pdma.o
+obj-$(CONFIG_XEN_PCIDEV_FRONTEND) += xen-pcifront.o
+obj-$(CONFIG_VGA_ARB)		+= vgaarb.o
+obj-$(CONFIG_PCI_DOE)		+= doe.o
+obj-$(CONFIG_PCI_IDE)		+= ide.o
+obj-$(CONFIG_PCI_TSM)		+= tsm.o
+obj-$(CONFIG_PCI_DYNAMIC_OF_NODES) += of_property.o
+obj-$(CONFIG_PCI_NPEM)		+= npem.o
+obj-$(CONFIG_PCIE_TPH)		+= tph.o
+obj-$(CONFIG_CARDBUS)		+= setup-cardbus.o
+
+# Endpoint library must be initialized before its users
+obj-$(CONFIG_PCI_ENDPOINT)	+= endpoint/
+
+obj-y				+= controller/
+obj-y				+= switch/
+
+subdir-ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG
+
+CFLAGS_trace.o := -I$(src)
+obj-$(CONFIG_TRACING)		+= trace.o