From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Fri, 4 Sep 2026 10:43:19 +0200 Subject: selftests/bpf: Reject graph kptr use after RCU unlock Add a sleepable verifier test that loads a graph-node local kptr in an explicit RCU read-side critical section, then passes its node to bpf_rbtree_remove() after the section ends. Before the verifier fix, the stale NON_OWN_REF flag makes the node look like a live borrowed reference and the program is accepted. After the fix, the pointer is demoted without NON_OWN_REF and the graph kfunc argument is rejected. Also exercise a graph kptr loaded while a spin lock provides implicit RCU protection. The pointer must be invalidated when the lock is released, which guards the required ordering between non-owning-reference invalidation and RCU demotion. Update the existing fault-protected load test state description. The post-unlock pointer no longer carries NON_OWN_REF, but remains readable because the load is rewritten to use BPF_PROBE_MEM. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- drivers/pinctrl/intel/Makefile | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 drivers/pinctrl/intel/Makefile (limited to 'drivers/pinctrl/intel/Makefile') diff --git a/drivers/pinctrl/intel/Makefile b/drivers/pinctrl/intel/Makefile new file mode 100644 index 000000000..d0d868c9a --- /dev/null +++ b/drivers/pinctrl/intel/Makefile @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: GPL-2.0 +# Intel pin control drivers + +obj-$(CONFIG_PINCTRL_BAYTRAIL) += pinctrl-baytrail.o +obj-$(CONFIG_PINCTRL_CHERRYVIEW) += pinctrl-cherryview.o +obj-$(CONFIG_PINCTRL_LYNXPOINT) += pinctrl-lynxpoint.o +obj-$(CONFIG_PINCTRL_TANGIER) += pinctrl-tangier.o +obj-$(CONFIG_PINCTRL_MERRIFIELD) += pinctrl-merrifield.o +obj-$(CONFIG_PINCTRL_MOOREFIELD) += pinctrl-moorefield.o +obj-$(CONFIG_PINCTRL_INTEL) += pinctrl-intel.o +obj-$(CONFIG_PINCTRL_INTEL_PLATFORM) += pinctrl-intel-platform.o +obj-$(CONFIG_PINCTRL_ALDERLAKE) += pinctrl-alderlake.o +obj-$(CONFIG_PINCTRL_BROXTON) += pinctrl-broxton.o +obj-$(CONFIG_PINCTRL_CANNONLAKE) += pinctrl-cannonlake.o +obj-$(CONFIG_PINCTRL_CEDARFORK) += pinctrl-cedarfork.o +obj-$(CONFIG_PINCTRL_DENVERTON) += pinctrl-denverton.o +obj-$(CONFIG_PINCTRL_ELKHARTLAKE) += pinctrl-elkhartlake.o +obj-$(CONFIG_PINCTRL_EMMITSBURG) += pinctrl-emmitsburg.o +obj-$(CONFIG_PINCTRL_GEMINILAKE) += pinctrl-geminilake.o +obj-$(CONFIG_PINCTRL_ICELAKE) += pinctrl-icelake.o +obj-$(CONFIG_PINCTRL_JASPERLAKE) += pinctrl-jasperlake.o +obj-$(CONFIG_PINCTRL_LAKEFIELD) += pinctrl-lakefield.o +obj-$(CONFIG_PINCTRL_LEWISBURG) += pinctrl-lewisburg.o +obj-$(CONFIG_PINCTRL_METEORLAKE) += pinctrl-meteorlake.o +obj-$(CONFIG_PINCTRL_METEORPOINT) += pinctrl-meteorpoint.o +obj-$(CONFIG_PINCTRL_SUNRISEPOINT) += pinctrl-sunrisepoint.o +obj-$(CONFIG_PINCTRL_TIGERLAKE) += pinctrl-tigerlake.o -- cgit v1.3.1