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, 27 insertions, 0 deletions

diff --git a/drivers/ssb/Makefile b/drivers/ssb/Makefile
new file mode 100644
index 000000000..142d33df0
--- /dev/null
+++ b/drivers/ssb/Makefile
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0
+# core
+ssb-y					+= main.o scan.o
+ssb-$(CONFIG_SSB_EMBEDDED)		+= embedded.o
+ssb-$(CONFIG_SSB_SPROM)			+= sprom.o
+
+# host support
+ssb-$(CONFIG_SSB_PCIHOST)		+= pci.o pcihost_wrapper.o
+ssb-$(CONFIG_SSB_PCMCIAHOST)		+= pcmcia.o bridge_pcmcia_80211.o
+ssb-$(CONFIG_SSB_SDIOHOST)		+= sdio.o
+ssb-$(CONFIG_SSB_HOST_SOC)		+= host_soc.o
+
+# built-in drivers
+ssb-y					+= driver_chipcommon.o
+ssb-y					+= driver_chipcommon_pmu.o
+ssb-$(CONFIG_SSB_SFLASH)		+= driver_chipcommon_sflash.o
+ssb-$(CONFIG_SSB_DRIVER_MIPS)		+= driver_mipscore.o
+ssb-$(CONFIG_SSB_DRIVER_EXTIF)		+= driver_extif.o
+ssb-$(CONFIG_SSB_DRIVER_PCICORE)	+= driver_pcicore.o
+ssb-$(CONFIG_SSB_DRIVER_GIGE)		+= driver_gige.o
+ssb-$(CONFIG_SSB_DRIVER_GPIO)		+= driver_gpio.o
+
+# b43 pci-ssb-bridge driver
+# Not strictly a part of SSB, but kept here for convenience
+ssb-$(CONFIG_SSB_B43_PCI_BRIDGE)	+= b43_pci_bridge.o
+
+obj-$(CONFIG_SSB)			+= ssb.o