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/scsi/mvsas/Kconfig | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 drivers/scsi/mvsas/Kconfig (limited to 'drivers/scsi/mvsas/Kconfig') diff --git a/drivers/scsi/mvsas/Kconfig b/drivers/scsi/mvsas/Kconfig new file mode 100644 index 000000000..5ac7fd593 --- /dev/null +++ b/drivers/scsi/mvsas/Kconfig @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Kernel configuration file for 88SE64XX/88SE94XX SAS/SATA driver. +# +# Copyright 2007 Red Hat, Inc. +# Copyright 2008 Marvell. +# Copyright 2009-2011 Marvell. +# + +config SCSI_MVSAS + tristate "Marvell 88SE64XX/88SE94XX SAS/SATA support" + depends on PCI && HAS_IOPORT + select SCSI_SAS_LIBSAS + select FW_LOADER + help + This driver supports Marvell's SAS/SATA 3Gb/s PCI-E 88SE64XX and 6Gb/s + PCI-E 88SE94XX chip based host adapters. + +config SCSI_MVSAS_DEBUG + bool "Compile in debug mode" + default y + depends on SCSI_MVSAS + help + Compiles the 88SE64XX/88SE94XX driver in debug mode. In debug mode, + the driver prints some messages to the console. +config SCSI_MVSAS_TASKLET + bool "Support for interrupt tasklet" + default n + depends on SCSI_MVSAS + help + Compiles the 88SE64xx/88SE94xx driver in interrupt tasklet mode.In this mode, + the interrupt will schedule a tasklet. -- cgit v1.3.1