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>
---
 drivers/crypto/caam/compat.h | 52 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 drivers/crypto/caam/compat.h

(limited to 'drivers/crypto/caam/compat.h')

diff --git a/drivers/crypto/caam/compat.h b/drivers/crypto/caam/compat.h
new file mode 100644
index 000000000..c4f797641
--- /dev/null
+++ b/drivers/crypto/caam/compat.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2008-2011 Freescale Semiconductor, Inc.
+ */
+
+#ifndef CAAM_COMPAT_H
+#define CAAM_COMPAT_H
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/crypto.h>
+#include <linux/hash.h>
+#include <linux/hw_random.h>
+#include <linux/of_platform.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/iommu.h>
+#include <linux/spinlock.h>
+#include <linux/rtnetlink.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/debugfs.h>
+#include <linux/circ_buf.h>
+#include <linux/clk.h>
+#include <net/xfrm.h>
+
+#include <crypto/algapi.h>
+#include <crypto/null.h>
+#include <crypto/aes.h>
+#include <crypto/ctr.h>
+#include <crypto/internal/des.h>
+#include <crypto/gcm.h>
+#include <crypto/sha1.h>
+#include <crypto/sha2.h>
+#include <crypto/md5.h>
+#include <crypto/chacha.h>
+#include <crypto/poly1305.h>
+#include <crypto/internal/aead.h>
+#include <crypto/authenc.h>
+#include <crypto/akcipher.h>
+#include <crypto/scatterwalk.h>
+#include <crypto/skcipher.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/internal/hash.h>
+#include <crypto/internal/rsa.h>
+#include <crypto/internal/akcipher.h>
+
+#endif /* !defined(CAAM_COMPAT_H) */
-- 
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