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, 78 insertions, 0 deletions

diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig
new file mode 100644
index 000000000..d4e189fff
--- /dev/null
+++ b/drivers/phy/freescale/Kconfig
@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+if (ARCH_MXC && ARM64) || COMPILE_TEST
+
+config PHY_FSL_IMX8MQ_USB
+	tristate "Freescale i.MX8M USB3 PHY"
+	depends on OF && HAS_IOMEM
+	depends on TYPEC || TYPEC=n
+	select GENERIC_PHY
+	default ARCH_MXC && ARM64
+
+config PHY_MIXEL_LVDS_PHY
+	tristate "Mixel LVDS PHY support"
+	depends on OF
+	select GENERIC_PHY
+	select REGMAP_MMIO
+	help
+	  Enable this to add support for the Mixel LVDS PHY as found
+	  on NXP's i.MX8qm SoC.
+
+config PHY_MIXEL_MIPI_DPHY
+	tristate "Mixel MIPI DSI PHY support"
+	depends on OF && HAS_IOMEM
+	select GENERIC_PHY
+	select GENERIC_PHY_MIPI_DPHY
+	select REGMAP_MMIO
+	help
+	  Enable this to add support for the Mixel DSI PHY as found
+	  on NXP's i.MX8 family of SOCs.
+
+config PHY_FSL_IMX8M_PCIE
+	tristate "Freescale i.MX8M PCIE PHY"
+	depends on OF && HAS_IOMEM
+	select GENERIC_PHY
+	help
+	  Enable this to add support for the PCIE PHY as found on
+	  i.MX8M family of SOCs.
+
+config PHY_FSL_IMX8QM_HSIO
+	tristate "Freescale i.MX8QM HSIO PHY"
+	depends on OF && HAS_IOMEM
+	select GENERIC_PHY
+	help
+	  Enable this to add support for the HSIO PHY as found on
+	  i.MX8QM family of SOCs.
+
+config PHY_FSL_SAMSUNG_HDMI_PHY
+	tristate "Samsung HDMI PHY support"
+	depends on OF && HAS_IOMEM && COMMON_CLK
+	help
+	  Enable this to add support for the Samsung HDMI PHY in i.MX8MP.
+endif
+
+config PHY_FSL_LYNX_CORE
+	tristate
+
+config PHY_FSL_LYNX_10G
+	tristate "Freescale Layerscape Lynx 10G SerDes PHY support"
+	depends on OF
+	depends on ARCH_LAYERSCAPE || COMPILE_TEST
+	select FSL_GUTS
+	select GENERIC_PHY
+	select PHY_FSL_LYNX_CORE
+	help
+	  Enable this to add support for the Lynx 10G SerDes PHY as found on
+	  NXP's Layerscape platform such as LS1088A or LS1028A.
+
+config PHY_FSL_LYNX_28G
+	tristate "Freescale Layerscape Lynx 28G SerDes PHY support"
+	depends on OF
+	depends on ARCH_LAYERSCAPE || COMPILE_TEST
+	select GENERIC_PHY
+	select PHY_FSL_LYNX_CORE
+	help
+	  Enable this to add support for the Lynx SerDes 28G PHY as
+	  found on NXP's Layerscape platforms such as LX2160A.
+	  Used to change the protocol running on SerDes lanes at runtime.
+	  Only useful for a restricted set of Ethernet protocols.