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 --- include/dt-bindings/clock/berlin2q.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 include/dt-bindings/clock/berlin2q.h (limited to 'include/dt-bindings/clock/berlin2q.h') diff --git a/include/dt-bindings/clock/berlin2q.h b/include/dt-bindings/clock/berlin2q.h new file mode 100644 index 000000000..44b4ac382 --- /dev/null +++ b/include/dt-bindings/clock/berlin2q.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Berlin2 BG2Q clock tree IDs + */ + +#define CLKID_SYS 0 +#define CLKID_DRMFIGO 1 +#define CLKID_CFG 2 +#define CLKID_GFX2D 3 +#define CLKID_ZSP 4 +#define CLKID_PERIF 5 +#define CLKID_PCUBE 6 +#define CLKID_VSCOPE 7 +#define CLKID_NFC_ECC 8 +#define CLKID_VPP 9 +#define CLKID_APP 10 +#define CLKID_SDIO0XIN 11 +#define CLKID_SDIO1XIN 12 +#define CLKID_GFX2DAXI 13 +#define CLKID_GETH0 14 +#define CLKID_SATA 15 +#define CLKID_AHBAPB 16 +#define CLKID_USB0 17 +#define CLKID_USB1 18 +#define CLKID_USB2 19 +#define CLKID_USB3 20 +#define CLKID_PBRIDGE 21 +#define CLKID_SDIO 22 +#define CLKID_NFC 23 +#define CLKID_SMEMC 24 +#define CLKID_PCIE 25 +#define CLKID_TWD 26 +#define CLKID_CPU 27 -- cgit v1.3.1