From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001
From: Eduard Zingerman <eddyz87@gmail.com>
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 <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---
 Documentation/fb/index.rst | 52 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 Documentation/fb/index.rst

(limited to 'Documentation/fb/index.rst')

diff --git a/Documentation/fb/index.rst b/Documentation/fb/index.rst
new file mode 100644
index 000000000..fe9ca3570
--- /dev/null
+++ b/Documentation/fb/index.rst
@@ -0,0 +1,52 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+============
+Frame Buffer
+============
+
+General information
+===================
+
+.. toctree::
+   :maxdepth: 1
+
+   api
+   cmap_xfbdev
+   deferred_io
+   fbcon
+   framebuffer
+   internals
+   modedb
+
+Driver documentation
+====================
+
+.. toctree::
+   :maxdepth: 1
+
+   arkfb
+   aty128fb
+   cirrusfb
+   efifb
+   ep93xx-fb
+   gxfb
+   intel810
+   lxfb
+   matroxfb
+   metronomefb
+   pvr2fb
+   pxafb
+   s3fb
+   sa1100fb
+   sh7760fb
+   sisfb
+   sm501
+   sm712fb
+   sstfb
+   tgafb
+   tridentfb
+   udlfb
+   uvesafb
+   vesafb
+   viafb
+   vt8623fb
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