1 files changed, 0 insertions, 131 deletions
diff --git a/kernel/kcsan/test.c b/kernel/kcsan/test.c
deleted file mode 100644
index d26a052d3383..000000000000
--- a/kernel/kcsan/test.c
+++ /dev/null
@@ -1,131 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/printk.h>
-#include <linux/random.h>
-#include <linux/types.h>
-
-#include "encoding.h"
-
-#define ITERS_PER_TEST 2000
-
-/* Test requirements. */
-static bool test_requires(void)
-{
-	/* random should be initialized for the below tests */
-	return prandom_u32() + prandom_u32() != 0;
-}
-
-/*
- * Test watchpoint encode and decode: check that encoding some access's info,
- * and then subsequent decode preserves the access's info.
- */
-static bool test_encode_decode(void)
-{
-	int i;
-
-	for (i = 0; i < ITERS_PER_TEST; ++i) {
-		size_t size = prandom_u32_max(MAX_ENCODABLE_SIZE) + 1;
-		bool is_write = !!prandom_u32_max(2);
-		unsigned long addr;
-
-		prandom_bytes(&addr, sizeof(addr));
-		if (WARN_ON(!check_encodable(addr, size)))
-			return false;
-
-		/* Encode and decode */
-		{
-			const long encoded_watchpoint =
-				encode_watchpoint(addr, size, is_write);
-			unsigned long verif_masked_addr;
-			size_t verif_size;
-			bool verif_is_write;
-
-			/* Check special watchpoints */
-			if (WARN_ON(decode_watchpoint(
-				    INVALID_WATCHPOINT, &verif_masked_addr,
-				    &verif_size, &verif_is_write)))
-				return false;
-			if (WARN_ON(decode_watchpoint(
-				    CONSUMED_WATCHPOINT, &verif_masked_addr,
-				    &verif_size, &verif_is_write)))
-				return false;
-
-			/* Check decoding watchpoint returns same data */
-			if (WARN_ON(!decode_watchpoint(
-				    encoded_watchpoint, &verif_masked_addr,
-				    &verif_size, &verif_is_write)))
-				return false;
-			if (WARN_ON(verif_masked_addr !=
-				    (addr & WATCHPOINT_ADDR_MASK)))
-				goto fail;
-			if (WARN_ON(verif_size != size))
-				goto fail;
-			if (WARN_ON(is_write != verif_is_write))
-				goto fail;
-
-			continue;
-fail:
-			pr_err("%s fail: %s %zu bytes @ %lx -> encoded: %lx -> %s %zu bytes @ %lx\n",
-			       __func__, is_write ? "write" : "read", size,
-			       addr, encoded_watchpoint,
-			       verif_is_write ? "write" : "read", verif_size,
-			       verif_masked_addr);
-			return false;
-		}
-	}
-
-	return true;
-}
-
-/* Test access matching function. */
-static bool test_matching_access(void)
-{
-	if (WARN_ON(!matching_access(10, 1, 10, 1)))
-		return false;
-	if (WARN_ON(!matching_access(10, 2, 11, 1)))
-		return false;
-	if (WARN_ON(!matching_access(10, 1, 9, 2)))
-		return false;
-	if (WARN_ON(matching_access(10, 1, 11, 1)))
-		return false;
-	if (WARN_ON(matching_access(9, 1, 10, 1)))
-		return false;
-
-	/*
-	 * An access of size 0 could match another access, as demonstrated here.
-	 * Rather than add more comparisons to 'matching_access()', which would
-	 * end up in the fast-path for *all* checks, check_access() simply
-	 * returns for all accesses of size 0.
-	 */
-	if (WARN_ON(!matching_access(8, 8, 12, 0)))
-		return false;
-
-	return true;
-}
-
-static int __init kcsan_selftest(void)
-{
-	int passed = 0;
-	int total = 0;
-
-#define RUN_TEST(do_test)                                                      \
-	do {                                                                   \
-		++total;                                                       \
-		if (do_test())                                                 \
-			++passed;                                              \
-		else                                                           \
-			pr_err("KCSAN selftest: " #do_test " failed");         \
-	} while (0)
-
-	RUN_TEST(test_requires);
-	RUN_TEST(test_encode_decode);
-	RUN_TEST(test_matching_access);
-
-	pr_info("KCSAN selftest: %d/%d tests passed\n", passed, total);
-	if (passed != total)
-		panic("KCSAN selftests failed");
-	return 0;
-}
-postcore_initcall(kcsan_selftest);