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 --- Documentation/driver-api/80211/introduction.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 Documentation/driver-api/80211/introduction.rst (limited to 'Documentation/driver-api/80211/introduction.rst') diff --git a/Documentation/driver-api/80211/introduction.rst b/Documentation/driver-api/80211/introduction.rst new file mode 100644 index 000000000..4938fa876 --- /dev/null +++ b/Documentation/driver-api/80211/introduction.rst @@ -0,0 +1,17 @@ +============ +Introduction +============ + +Explaining wireless 802.11 networking in the Linux kernel + +Copyright 2007-2009 Johannes Berg + +These books attempt to give a description of the various subsystems +that play a role in 802.11 wireless networking in Linux. Since these +books are for kernel developers they attempts to document the +structures and functions used in the kernel as well as giving a +higher-level overview. + +The reader is expected to be familiar with the 802.11 standard as +published by the IEEE in 802.11-2007 (or possibly later versions). +References to this standard will be given as "802.11-2007 8.1.5". -- cgit v1.3.1