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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/pinctrl/realtek/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/pinctrl/realtek/Kconfig')
| -rw-r--r-- | drivers/pinctrl/realtek/Kconfig | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/pinctrl/realtek/Kconfig b/drivers/pinctrl/realtek/Kconfig new file mode 100644 index 000000000..a156c4ef5 --- /dev/null +++ b/drivers/pinctrl/realtek/Kconfig @@ -0,0 +1,38 @@ +# SPDX-License-Identifier: GPL-2.0-or-later + +config PINCTRL_RTD + tristate "Realtek DHC core pin controller driver" + depends on ARCH_REALTEK || (COMPILE_TEST && OF) + default ARCH_REALTEK + select PINMUX + select GENERIC_PINCONF + select REGMAP_MMIO + +config PINCTRL_RTD1619B + tristate "Realtek DHC 1619B pin controller driver" + depends on PINCTRL_RTD + default ARCH_REALTEK + +config PINCTRL_RTD1319D + tristate "Realtek DHC 1319D pin controller driver" + depends on PINCTRL_RTD + default ARCH_REALTEK + +config PINCTRL_RTD1315E + tristate "Realtek DHC 1315E pin controller driver" + depends on PINCTRL_RTD + default ARCH_REALTEK + +config PINCTRL_RTD1625 + tristate "Realtek DHC 1625 pin controller driver" + depends on PINCTRL_RTD + default ARCH_REALTEK + help + This driver enables support for the pin controller on the Realtek + RTD1625 SoCs. + + It implements pin multiplexing for function selection and GPIO enabling. + It also utilizes the generic pin configuration interface to manage + electrical properties for both individual pins and pin groups. + + Say Y here to enable the pinctrl driver for RTD1625 SoCs
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