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, 56 insertions, 0 deletions

diff --git a/drivers/pinctrl/aspeed/Kconfig b/drivers/pinctrl/aspeed/Kconfig
new file mode 100644
index 000000000..8e1d4da08
--- /dev/null
+++ b/drivers/pinctrl/aspeed/Kconfig
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config PINCTRL_ASPEED
+	bool
+	depends on (ARCH_ASPEED || COMPILE_TEST) && OF
+	select MFD_SYSCON
+	select PINMUX
+	select PINCONF
+	select GENERIC_PINCONF
+	select REGMAP_MMIO
+
+config PINCTRL_ASPEED_G4
+	bool "Aspeed G4 SoC pin control"
+	depends on (MACH_ASPEED_G4 || COMPILE_TEST) && OF
+	select PINCTRL_ASPEED
+	help
+	  Say Y here to enable pin controller support for Aspeed's 4th
+	  generation SoCs. GPIO is provided by a separate GPIO driver.
+
+config PINCTRL_ASPEED_G5
+	bool "Aspeed G5 SoC pin control"
+	depends on (MACH_ASPEED_G5 || COMPILE_TEST) && OF
+	select PINCTRL_ASPEED
+	help
+	  Say Y here to enable pin controller support for Aspeed's 5th
+	  generation SoCs. GPIO is provided by a separate GPIO driver.
+
+config PINCTRL_ASPEED_G6
+	bool "Aspeed G6 SoC pin control"
+	depends on (MACH_ASPEED_G6 || COMPILE_TEST) && OF
+	select PINCTRL_ASPEED
+	help
+	  Say Y here to enable pin controller support for Aspeed's 6th
+	  generation SoCs. GPIO is provided by a separate GPIO driver.
+
+config PINCTRL_ASPEED_G7_SOC0
+	bool "Aspeed G7 SoC pin control"
+	depends on (ARCH_ASPEED || COMPILE_TEST) && OF
+	select PINCTRL_ASPEED
+	help
+	  Say Y here to enable pin controller support for the SoC0 instance
+	  of Aspeed's 7th generation SoCs. GPIO is provided by a separate
+	  GPIO driver.
+
+config PINCTRL_ASPEED_G7_SOC1
+	bool "Aspeed G7 SoC1 pin control"
+	depends on (ARCH_ASPEED || COMPILE_TEST) && OF
+	select MFD_SYSCON
+	select PINMUX
+	select GENERIC_PINCTRL_GROUPS
+	select GENERIC_PINMUX_FUNCTIONS
+	select GENERIC_PINCONF
+	select REGMAP_MMIO
+	help
+	  Say Y here to enable pin controller support for the SoC1 instance
+	  of Aspeed's 7th generation SoCs. GPIO is provided by a separate
+	  GPIO driver.