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 --- net/kcm/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 net/kcm/Kconfig (limited to 'net/kcm/Kconfig') diff --git a/net/kcm/Kconfig b/net/kcm/Kconfig new file mode 100644 index 000000000..66660a06c --- /dev/null +++ b/net/kcm/Kconfig @@ -0,0 +1,11 @@ +# SPDX-License-Identifier: GPL-2.0-only + +config AF_KCM + tristate "KCM sockets" + depends on INET + select BPF_SYSCALL + select STREAM_PARSER + help + KCM (Kernel Connection Multiplexor) sockets provide a method + for multiplexing messages of a message-based application + protocol over kernel connections (e.g. TCP connections). -- cgit v1.3.1