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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 /net/rfkill/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 'net/rfkill/Kconfig')
| -rw-r--r-- | net/rfkill/Kconfig | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/net/rfkill/Kconfig b/net/rfkill/Kconfig new file mode 100644 index 000000000..83a7af898 --- /dev/null +++ b/net/rfkill/Kconfig @@ -0,0 +1,34 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# RF switch subsystem configuration +# +menuconfig RFKILL + tristate "RF switch subsystem support" + help + Say Y here if you want to have control over RF switches + found on many WiFi and Bluetooth cards. + + To compile this driver as a module, choose M here: the + module will be called rfkill. + +# LED trigger support +config RFKILL_LEDS + bool + depends on RFKILL + depends on LEDS_TRIGGERS = y || RFKILL = LEDS_TRIGGERS + default y + +config RFKILL_INPUT + bool "RF switch input support" if EXPERT + depends on RFKILL + depends on INPUT = y || RFKILL = INPUT + default y if !EXPERT + +config RFKILL_GPIO + tristate "GPIO RFKILL driver" + depends on RFKILL + depends on GPIOLIB || COMPILE_TEST + default n + help + If you say yes here you get support of a generic gpio RFKILL + driver. |