linux-kernel - [tip:x86/urgent] x86/pkeys/selftests: Stop using assert()

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Date:   Mon, 14 May 2018 05:41:20 -0700
From:   tip-bot for Dave Hansen <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org,
        dave.hansen@...ux.intel.com, linuxram@...ibm.com, shuah@...nel.org,
        mpe@...erman.id.au, akpm@...ux-foundation.org,
        dave.hansen@...el.com, hpa@...or.com,
        torvalds@...ux-foundation.org, mingo@...nel.org,
        peterz@...radead.org
Subject: [tip:x86/urgent] x86/pkeys/selftests: Stop using assert()

Commit-ID:  86b9eea230edf4c67d4d4a70fba9b74505867a25
Gitweb:     https://git.kernel.org/tip/86b9eea230edf4c67d4d4a70fba9b74505867a25
Author:     Dave Hansen <dave.hansen@...ux.intel.com>
AuthorDate: Wed, 9 May 2018 10:13:40 -0700
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Mon, 14 May 2018 11:14:45 +0200

x86/pkeys/selftests: Stop using assert()

If we use assert(), the program "crashes".  That can be scary to users,
so stop doing it.  Just exit with a >0 exit code instead.

Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Dave Hansen <dave.hansen@...el.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Michael Ellermen <mpe@...erman.id.au>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ram Pai <linuxram@...ibm.com>
Cc: Shuah Khan <shuah@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-mm@...ck.org
Link: http://lkml.kernel.org/r/20180509171340.E63EF7DA@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 tools/testing/selftests/x86/protection_keys.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/x86/protection_keys.c b/tools/testing/selftests/x86/protection_keys.c
index a0f0a732784b..8537a7cfe1cc 100644
--- a/tools/testing/selftests/x86/protection_keys.c
+++ b/tools/testing/selftests/x86/protection_keys.c
@@ -72,10 +72,9 @@ extern void abort_hooks(void);
 				test_nr, iteration_nr);	\
 		dprintf0("errno at assert: %d", errno);	\
 		abort_hooks();			\
-		assert(condition);		\
+		exit(__LINE__);			\
 	}					\
 } while (0)
-#define raw_assert(cond) assert(cond)
 
 void cat_into_file(char *str, char *file)
 {
@@ -87,12 +86,17 @@ void cat_into_file(char *str, char *file)
 	 * these need to be raw because they are called under
 	 * pkey_assert()
 	 */
-	raw_assert(fd >= 0);
+	if (fd < 0) {
+		fprintf(stderr, "error opening '%s'\n", str);
+		perror("error: ");
+		exit(__LINE__);
+	}
+
 	ret = write(fd, str, strlen(str));
 	if (ret != strlen(str)) {
 		perror("write to file failed");
 		fprintf(stderr, "filename: '%s' str: '%s'\n", file, str);
-		raw_assert(0);
+		exit(__LINE__);
 	}
 	close(fd);
 }