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/net/af_ieee802154.h | 59 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 include/net/af_ieee802154.h (limited to 'include/net/af_ieee802154.h') diff --git a/include/net/af_ieee802154.h b/include/net/af_ieee802154.h new file mode 100644 index 000000000..c16be82b9 --- /dev/null +++ b/include/net/af_ieee802154.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * IEEE 802.15.4 interface for userspace + * + * Copyright 2007, 2008 Siemens AG + * + * Written by: + * Sergey Lapin + * Dmitry Eremin-Solenikov + */ + +#ifndef _AF_IEEE802154_H +#define _AF_IEEE802154_H + +#include /* for sa_family_t */ + +enum { + IEEE802154_ADDR_NONE = 0x0, + /* RESERVED = 0x01, */ + IEEE802154_ADDR_SHORT = 0x2, /* 16-bit address + PANid */ + IEEE802154_ADDR_LONG = 0x3, /* 64-bit address + PANid */ +}; + +/* address length, octets */ +#define IEEE802154_ADDR_LEN 8 + +struct ieee802154_addr_sa { + int addr_type; + u16 pan_id; + union { + u8 hwaddr[IEEE802154_ADDR_LEN]; + u16 short_addr; + }; +}; + +#define IEEE802154_PANID_BROADCAST 0xffff +#define IEEE802154_ADDR_BROADCAST 0xffff +#define IEEE802154_ADDR_UNDEF 0xfffe + +struct sockaddr_ieee802154 { + sa_family_t family; /* AF_IEEE802154 */ + struct ieee802154_addr_sa addr; +}; + +/* get/setsockopt */ +#define SOL_IEEE802154 0 + +#define WPAN_WANTACK 0 +#define WPAN_SECURITY 1 +#define WPAN_SECURITY_LEVEL 2 +#define WPAN_WANTLQI 3 + +#define WPAN_SECURITY_DEFAULT 0 +#define WPAN_SECURITY_OFF 1 +#define WPAN_SECURITY_ON 2 + +#define WPAN_SECURITY_LEVEL_DEFAULT (-1) + +#endif -- cgit v1.3.1