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 --- arch/mips/bmips/Kconfig | 83 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 arch/mips/bmips/Kconfig (limited to 'arch/mips/bmips/Kconfig') diff --git a/arch/mips/bmips/Kconfig b/arch/mips/bmips/Kconfig new file mode 100644 index 000000000..63dfc6950 --- /dev/null +++ b/arch/mips/bmips/Kconfig @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: GPL-2.0 +if BMIPS_GENERIC + +choice + prompt "Built-in device tree" + help + Legacy bootloaders do not pass a DTB pointer to the kernel, so + if a "wrapper" is not being used, the kernel will need to include + a device tree that matches the target board. + + The builtin DTB will only be used if the firmware does not supply + a valid DTB. + +config DT_NONE + bool "None" + +config DT_BCM93384WVG + bool "BCM93384WVG Zephyr CPU" + select BUILTIN_DTB + +config DT_BCM93384WVG_VIPER + bool "BCM93384WVG Viper CPU (EXPERIMENTAL)" + select BUILTIN_DTB + +config DT_BCM96368MVWG + bool "BCM96368MVWG" + select BUILTIN_DTB + +config DT_BCM9EJTAGPRB + bool "BCM9EJTAGPRB" + select BUILTIN_DTB + +config DT_BCM97125CBMB + bool "BCM97125CBMB" + select BUILTIN_DTB + +config DT_BCM97346DBSMB + bool "BCM97346DBSMB" + select BUILTIN_DTB + +config DT_BCM97358SVMB + bool "BCM97358SVMB" + select BUILTIN_DTB + +config DT_BCM97360SVMB + bool "BCM97360SVMB" + select BUILTIN_DTB + +config DT_BCM97362SVMB + bool "BCM97362SVMB" + select BUILTIN_DTB + +config DT_BCM97420C + bool "BCM97420C" + select BUILTIN_DTB + +config DT_BCM97425SVMB + bool "BCM97425SVMB" + select BUILTIN_DTB + +config DT_BCM97435SVMB + bool "BCM97435SVMB" + select BUILTIN_DTB + +config DT_COMTREND_VR3032U + bool "Comtrend VR-3032u" + select BUILTIN_DTB + +config DT_NETGEAR_CVG834G + bool "NETGEAR CVG834G" + select BUILTIN_DTB + +config DT_SFR_NEUFBOX4_SERCOMM + bool "SFR Neufbox 4 (Sercomm)" + select BUILTIN_DTB + +config DT_SFR_NEUFBOX6_SERCOMM + bool "SFR Neufbox 6 (Sercomm)" + select BUILTIN_DTB + +endchoice + +endif -- cgit v1.3.1