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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/amlogic/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/amlogic/Kconfig')
| -rw-r--r-- | drivers/soc/amlogic/Kconfig | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/soc/amlogic/Kconfig b/drivers/soc/amlogic/Kconfig new file mode 100644 index 000000000..d08e398bd --- /dev/null +++ b/drivers/soc/amlogic/Kconfig @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: GPL-2.0-only +menu "Amlogic SoC drivers" + +config MESON_CANVAS + tristate "Amlogic Meson Canvas driver" + depends on ARCH_MESON || COMPILE_TEST + default n + help + Say yes to support the canvas IP for Amlogic SoCs. + +config MESON_CLK_MEASURE + tristate "Amlogic Meson SoC Clock Measure driver" + depends on ARCH_MESON || COMPILE_TEST + default ARCH_MESON + select REGMAP_MMIO + help + Say yes to support of Measuring a set of internal SoC clocks + from the debugfs interface. + +config MESON_GX_SOCINFO + bool "Amlogic Meson GX SoC Information driver" + depends on (ARM64 && ARCH_MESON) || COMPILE_TEST + default ARCH_MESON + select SOC_BUS + help + Say yes to support decoding of Amlogic Meson GX SoC family + information about the type, package and version. + +config MESON_MX_SOCINFO + bool "Amlogic Meson MX SoC Information driver" + depends on (ARM && ARCH_MESON) || COMPILE_TEST + default ARCH_MESON + select SOC_BUS + help + Say yes to support decoding of Amlogic Meson6, Meson8, + Meson8b and Meson8m2 SoC family information about the type + and version. + +endmenu |