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 --- arch/mips/generic/proc.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 arch/mips/generic/proc.c (limited to 'arch/mips/generic/proc.c') diff --git a/arch/mips/generic/proc.c b/arch/mips/generic/proc.c new file mode 100644 index 000000000..cce2fde21 --- /dev/null +++ b/arch/mips/generic/proc.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2016 Imagination Technologies + * Author: Paul Burton + */ + +#include + +#include + +char *system_type; + +const char *get_system_type(void) +{ + const char *str; + int err; + + if (system_type) + return system_type; + + err = of_property_read_string(of_root, "model", &str); + if (!err) + return str; + + err = of_property_read_string_index(of_root, "compatible", 0, &str); + if (!err) + return str; + + return "Unknown"; +} -- cgit v1.3.1