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/interconnect/qcom/icc-common.c | 39 ++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 drivers/interconnect/qcom/icc-common.c (limited to 'drivers/interconnect/qcom/icc-common.c') diff --git a/drivers/interconnect/qcom/icc-common.c b/drivers/interconnect/qcom/icc-common.c new file mode 100644 index 000000000..a25564fe1 --- /dev/null +++ b/drivers/interconnect/qcom/icc-common.c @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2022 Linaro Ltd. + */ + +#include +#include +#include + +#include "icc-common.h" + +struct icc_node_data *qcom_icc_xlate_extended(const struct of_phandle_args *spec, + void *data) +{ + struct icc_node_data *ndata; + struct icc_node *node; + + node = of_icc_xlate_onecell(spec, data); + if (IS_ERR(node)) + return ERR_CAST(node); + + ndata = kzalloc_obj(*ndata); + if (!ndata) + return ERR_PTR(-ENOMEM); + + ndata->node = node; + + if (spec->args_count == 2) + ndata->tag = spec->args[1]; + + if (spec->args_count > 2) + pr_warn("%pOF: Too many arguments, path tag is not parsed\n", spec->np); + + return ndata; +} +EXPORT_SYMBOL_GPL(qcom_icc_xlate_extended); + +MODULE_DESCRIPTION("Qualcomm interconnect common functions"); +MODULE_LICENSE("GPL"); -- cgit v1.3.1