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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-09-04 10:43:19 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 07:58:36 -0700 |
| commit | 6668ed271eaefaa63e686bdfbedaeb7b8e492722 (patch) | |
| tree | 58e8288fead484f6755ad0815fc74c3742663761 /drivers/soc/rockchip/Kconfig | |
| download | linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.tar.gz linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.zip | |
selftests/bpf: Reject graph kptr use after RCU unlockgrafted
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 <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/soc/rockchip/Kconfig')
| -rw-r--r-- | drivers/soc/rockchip/Kconfig | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/soc/rockchip/Kconfig b/drivers/soc/rockchip/Kconfig new file mode 100644 index 000000000..785f60c6f --- /dev/null +++ b/drivers/soc/rockchip/Kconfig @@ -0,0 +1,33 @@ +# SPDX-License-Identifier: GPL-2.0-only +if ARCH_ROCKCHIP || COMPILE_TEST + +# +# Rockchip Soc drivers +# + +config ROCKCHIP_GRF + bool "Rockchip General Register Files support" if COMPILE_TEST + default y if ARCH_ROCKCHIP + help + The General Register Files are a central component providing + special additional settings registers for a lot of soc-components. + In a lot of cases there also need to be default settings initialized + to make some of them conform to expectations of the kernel. + +config ROCKCHIP_IODOMAIN + tristate "Rockchip IO domain support" + depends on OF + help + Say y here to enable support io domains on Rockchip SoCs. It is + necessary for the io domain setting of the SoC to match the + voltage supplied by the regulators. + +config ROCKCHIP_DTPM + tristate "Rockchip DTPM hierarchy" + depends on DTPM && m + help + Describe the hierarchy for the Dynamic Thermal Power Management tree + on this platform. That will create all the power capping capable + devices. + +endif |