selftests/bpf: Check that JMP32 pointer vs zero jumps are not predictedgrafted

Add jmp32_ptr_vs_zero_jne: the fall-through of the 32-bit compare, which
the verifier used to skip, contains an out of bounds map value access,
hence w/o the previous patch the program is accepted. See previous patch
for detailed description.

Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260904083325.2083493-6-eddyz87@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/rust/helpers/clk.c b/rust/helpers/clk.c
new file mode 100644
index 000000000..15fd7e469
--- /dev/null
+++ b/rust/helpers/clk.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/clk.h>
+
+/*
+ * The "inline" implementation of below helpers are only available when
+ * CONFIG_HAVE_CLK or CONFIG_HAVE_CLK_PREPARE aren't set.
+ */
+#ifndef CONFIG_HAVE_CLK
+__rust_helper struct clk *rust_helper_clk_get(struct device *dev,
+					      const char *id)
+{
+	return clk_get(dev, id);
+}
+
+__rust_helper void rust_helper_clk_put(struct clk *clk)
+{
+	clk_put(clk);
+}
+
+__rust_helper int rust_helper_clk_enable(struct clk *clk)
+{
+	return clk_enable(clk);
+}
+
+__rust_helper void rust_helper_clk_disable(struct clk *clk)
+{
+	clk_disable(clk);
+}
+
+__rust_helper unsigned long rust_helper_clk_get_rate(struct clk *clk)
+{
+	return clk_get_rate(clk);
+}
+
+__rust_helper int rust_helper_clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	return clk_set_rate(clk, rate);
+}
+#endif
+
+#ifndef CONFIG_HAVE_CLK_PREPARE
+__rust_helper int rust_helper_clk_prepare(struct clk *clk)
+{
+	return clk_prepare(clk);
+}
+
+__rust_helper void rust_helper_clk_unprepare(struct clk *clk)
+{
+	clk_unprepare(clk);
+}
+#endif
+
+__rust_helper struct clk *rust_helper_clk_get_optional(struct device *dev,
+						       const char *id)
+{
+	return clk_get_optional(dev, id);
+}
+
+__rust_helper int rust_helper_clk_prepare_enable(struct clk *clk)
+{
+	return clk_prepare_enable(clk);
+}
+
+__rust_helper void rust_helper_clk_disable_unprepare(struct clk *clk)
+{
+	clk_disable_unprepare(clk);
+}