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, 23 insertions, 0 deletions

diff --git a/drivers/hid/intel-thc-hid/Makefile b/drivers/hid/intel-thc-hid/Makefile
new file mode 100644
index 000000000..f1182253b
--- /dev/null
+++ b/drivers/hid/intel-thc-hid/Makefile
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile - Intel Touch Host Controller (THC) drivers
+# Copyright (c) 2024, Intel Corporation.
+#
+#
+
+obj-$(CONFIG_INTEL_THC_HID) += intel-thc.o
+intel-thc-objs += intel-thc/intel-thc-dev.o
+intel-thc-objs += intel-thc/intel-thc-dma.o
+intel-thc-objs += intel-thc/intel-thc-wot.o
+
+obj-$(CONFIG_INTEL_QUICKSPI) += intel-quickspi.o
+intel-quickspi-objs += intel-quickspi/pci-quickspi.o
+intel-quickspi-objs += intel-quickspi/quickspi-hid.o
+intel-quickspi-objs += intel-quickspi/quickspi-protocol.o
+
+obj-$(CONFIG_INTEL_QUICKI2C) += intel-quicki2c.o
+intel-quicki2c-objs += intel-quicki2c/pci-quicki2c.o
+intel-quicki2c-objs += intel-quicki2c/quicki2c-hid.o
+intel-quicki2c-objs += intel-quicki2c/quicki2c-protocol.o
+
+ccflags-y += -I $(src)/intel-thc