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/char/ipmi/Makefile | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 drivers/char/ipmi/Makefile (limited to 'drivers/char/ipmi/Makefile') diff --git a/drivers/char/ipmi/Makefile b/drivers/char/ipmi/Makefile new file mode 100644 index 000000000..4ea450a82 --- /dev/null +++ b/drivers/char/ipmi/Makefile @@ -0,0 +1,31 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the ipmi drivers. +# + +ipmi_si-y := ipmi_si_intf.o ipmi_kcs_sm.o ipmi_smic_sm.o ipmi_bt_sm.o \ + ipmi_si_hotmod.o ipmi_si_hardcode.o ipmi_si_platform.o \ + ipmi_si_mem_io.o +ipmi_si-$(CONFIG_HAS_IOPORT) += ipmi_si_port_io.o +ipmi_si-$(CONFIG_PCI) += ipmi_si_pci.o +ipmi_si-$(CONFIG_IPMI_LS2K) += ipmi_si_ls2k.o +ipmi_si-$(CONFIG_PARISC) += ipmi_si_parisc.o + +obj-$(CONFIG_IPMI_HANDLER) += ipmi_msghandler.o +obj-$(CONFIG_IPMI_DEVICE_INTERFACE) += ipmi_devintf.o +obj-$(CONFIG_IPMI_SI) += ipmi_si.o +obj-$(CONFIG_IPMI_DMI_DECODE) += ipmi_dmi.o +obj-$(CONFIG_IPMI_PLAT_DATA) += ipmi_plat_data.o +obj-$(CONFIG_IPMI_SSIF) += ipmi_ssif.o +obj-$(CONFIG_IPMI_IPMB) += ipmi_ipmb.o +obj-$(CONFIG_IPMI_POWERNV) += ipmi_powernv.o +obj-$(CONFIG_IPMI_WATCHDOG) += ipmi_watchdog.o +obj-$(CONFIG_IPMI_POWEROFF) += ipmi_poweroff.o +obj-$(CONFIG_IPMI_KCS_BMC) += kcs_bmc.o +obj-$(CONFIG_IPMI_KCS_BMC_SERIO) += kcs_bmc_serio.o +obj-$(CONFIG_IPMI_KCS_BMC_CDEV_IPMI) += kcs_bmc_cdev_ipmi.o +obj-$(CONFIG_ASPEED_BT_IPMI_BMC) += bt-bmc.o +obj-$(CONFIG_ASPEED_KCS_IPMI_BMC) += kcs_bmc_aspeed.o +obj-$(CONFIG_NPCM7XX_KCS_IPMI_BMC) += kcs_bmc_npcm7xx.o +obj-$(CONFIG_IPMB_DEVICE_INTERFACE) += ipmb_dev_int.o +obj-$(CONFIG_SSIF_IPMI_BMC) += ssif_bmc.o -- cgit v1.3.1