linux-kernel - [PATCH 5.15 009/201] Revert "selftest/vm: verify mmap addr in mremap

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Message-Id: <20220727161027.337601368@linuxfoundation.org>
Date:   Wed, 27 Jul 2022 18:08:33 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        "sidhartha.kumar@...cle.com, stable@...r.kernel.org, Oleksandr
        Tymoshenko" <ovt@...gle.com>, Oleksandr Tymoshenko <ovt@...gle.com>
Subject: [PATCH 5.15 009/201] Revert "selftest/vm: verify mmap addr in mremap_test"

From: Oleksandr Tymoshenko <ovt@...gle.com>

This reverts commit e8b9989597daac896b3400b7005f24bf15233d9a.

The upstream commit 9c85a9bae267 ("selftest/vm: verify mmap addr in
mremap_test") was backported as commit a17404fcbfd0 ("selftest/vm:
verify mmap addr in mremap_test"). Repeated backport introduced the
duplicate of function get_mmap_min_addr to the file breakign the vm
selftest build.

Fixes: e8b9989597da ("selftest/vm: verify mmap addr in mremap_test")
Signed-off-by: Oleksandr Tymoshenko <ovt@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 tools/testing/selftests/vm/mremap_test.c |   29 -----------------------------
 1 file changed, 29 deletions(-)

--- a/tools/testing/selftests/vm/mremap_test.c
+++ b/tools/testing/selftests/vm/mremap_test.c
@@ -66,35 +66,6 @@ enum {
 	.expect_failure = should_fail				\
 }
 
-/* Returns mmap_min_addr sysctl tunable from procfs */
-static unsigned long long get_mmap_min_addr(void)
-{
-	FILE *fp;
-	int n_matched;
-	static unsigned long long addr;
-
-	if (addr)
-		return addr;
-
-	fp = fopen("/proc/sys/vm/mmap_min_addr", "r");
-	if (fp == NULL) {
-		ksft_print_msg("Failed to open /proc/sys/vm/mmap_min_addr: %s\n",
-			strerror(errno));
-		exit(KSFT_SKIP);
-	}
-
-	n_matched = fscanf(fp, "%llu", &addr);
-	if (n_matched != 1) {
-		ksft_print_msg("Failed to read /proc/sys/vm/mmap_min_addr: %s\n",
-			strerror(errno));
-		fclose(fp);
-		exit(KSFT_SKIP);
-	}
-
-	fclose(fp);
-	return addr;
-}
-
 /*
  * Returns false if the requested remap region overlaps with an
  * existing mapping (e.g text, stack) else returns true.