From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- drivers/dpll/Kconfig | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 drivers/dpll/Kconfig (limited to 'drivers/dpll/Kconfig') diff --git a/drivers/dpll/Kconfig b/drivers/dpll/Kconfig new file mode 100644 index 000000000..be98969f0 --- /dev/null +++ b/drivers/dpll/Kconfig @@ -0,0 +1,28 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Generic DPLL drivers configuration +# + +menu "DPLL device support" + +config DPLL + bool + +config DPLL_REFCNT_TRACKER + bool "DPLL reference count tracking" + depends on DEBUG_KERNEL && STACKTRACE_SUPPORT && DPLL + select REF_TRACKER + help + Enable reference count tracking for DPLL devices and pins. + This helps debugging reference leaks and use-after-free bugs + by recording stack traces for each get/put operation. + + The tracking information is exposed via debugfs at: + /sys/kernel/debug/ref_tracker/dpll_device_* + /sys/kernel/debug/ref_tracker/dpll_pin_* + + If unsure, say N. + +source "drivers/dpll/zl3073x/Kconfig" + +endmenu -- cgit v1.3.1