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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/clk/aspeed/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/clk/aspeed/Kconfig')
| -rw-r--r-- | drivers/clk/aspeed/Kconfig | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/clk/aspeed/Kconfig b/drivers/clk/aspeed/Kconfig new file mode 100644 index 000000000..ef50481c3 --- /dev/null +++ b/drivers/clk/aspeed/Kconfig @@ -0,0 +1,21 @@ +# SPDX-License-Identifier: GPL-2.0-only + +config COMMON_CLK_ASPEED + bool "Clock driver for Aspeed BMC SoCs" + depends on ARCH_ASPEED || COMPILE_TEST + default ARCH_ASPEED + select MFD_SYSCON + select RESET_CONTROLLER + help + This driver supports the SoC clocks on the Aspeed BMC platforms. + + The G4 and G5 series, including the ast2400 and ast2500, are supported + by this driver. + +config COMMON_CLK_AST2700 + bool "Clock driver for AST2700 SoC" + depends on ARCH_ASPEED || COMPILE_TEST + help + This driver provides support for clock on AST2700 SoC. + The driver is responsible for managing the various clocks required + by the peripherals and cores within the AST2700. |