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/input/vivaldi-fmap.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 drivers/input/vivaldi-fmap.c (limited to 'drivers/input/vivaldi-fmap.c') diff --git a/drivers/input/vivaldi-fmap.c b/drivers/input/vivaldi-fmap.c new file mode 100644 index 000000000..978949eba --- /dev/null +++ b/drivers/input/vivaldi-fmap.c @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Helpers for ChromeOS Vivaldi keyboard function row mapping + * + * Copyright (C) 2022 Google, Inc + */ + +#include +#include +#include +#include +#include + +/** + * vivaldi_function_row_physmap_show - Print vivaldi function row physmap attribute + * @data: The vivaldi function row map + * @buf: Buffer to print the function row phsymap to + */ +ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data, + char *buf) +{ + ssize_t size = 0; + int i; + const u32 *physmap = data->function_row_physmap; + + if (!data->num_function_row_keys) + return 0; + + for (i = 0; i < data->num_function_row_keys; i++) + size += sysfs_emit_at(buf, size, + "%s%02X", size ? " " : "", physmap[i]); + if (size) + size += sysfs_emit_at(buf, size, "\n"); + + return size; +} +EXPORT_SYMBOL_GPL(vivaldi_function_row_physmap_show); + +MODULE_DESCRIPTION("Helpers for ChromeOS Vivaldi keyboard function row mapping"); +MODULE_LICENSE("GPL"); -- cgit v1.3.1