Patch "selftests/powerpc: Fix compile error on tlbie_test due to newer gcc" has been added to the 4.14-stable tree

[gregkh at linuxfoundation.org]

This is a note to let you know that I've just added the patch titled

    selftests/powerpc: Fix compile error on tlbie_test due to newer gcc

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     selftests-powerpc-fix-compile-error-on-tlbie_test-due-to-newer-gcc.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.


>From foo at baz Fri 08 Nov 2019 05:55:09 PM CET
From: Sandipan Das <sandipan at linux.ibm.com>
Date: Thu, 17 Oct 2019 13:35:05 +0530
Subject: selftests/powerpc: Fix compile error on tlbie_test due to newer gcc
To: gregkh at linuxfoundation.org
Cc: stable at vger.kernel.org, aneesh.kumar at linux.ibm.com, mpe at ellerman.id.au, linuxppc-dev at lists.ozlabs.org, "Desnes A. Nunes do Rosario" <desnesn at linux.ibm.com>
Message-ID: <20191017080505.8348-6-sandipan at linux.ibm.com>

From: Desnes A. Nunes do Rosario <desnesn at linux.ibm.com>

commit 5b216ea1c40cf06eead15054c70e238c9bd4729e upstream.

Newer versions of GCC (>= 9) demand that the size of the string to be
copied must be explicitly smaller than the size of the destination.
Thus, the NULL char has to be taken into account on strncpy.

This will avoid the following compiling error:

  tlbie_test.c: In function 'main':
  tlbie_test.c:639:4: error: 'strncpy' specified bound 100 equals destination size
      strncpy(logdir, optarg, LOGDIR_NAME_SIZE);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  cc1: all warnings being treated as errors

Cc: stable at vger.kernel.org # v4.14
Signed-off-by: Desnes A. Nunes do Rosario <desnesn at linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
Link: https://lore.kernel.org/r/20191003211010.9711-1-desnesn@linux.ibm.com
[sandipan: Backported to v4.14]
Signed-off-by: Sandipan Das <sandipan at linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 tools/testing/selftests/powerpc/mm/tlbie_test.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/powerpc/mm/tlbie_test.c
+++ b/tools/testing/selftests/powerpc/mm/tlbie_test.c
@@ -636,7 +636,7 @@ int main(int argc, char *argv[])
 			nrthreads = strtoul(optarg, NULL, 10);
 			break;
 		case 'l':
-			strncpy(logdir, optarg, LOGDIR_NAME_SIZE);
+			strncpy(logdir, optarg, LOGDIR_NAME_SIZE - 1);
 			break;
 		case 't':
 			run_time = strtoul(optarg, NULL, 10);


Patches currently in stable-queue which might be from sandipan at linux.ibm.com are

queue-4.14/powerpc-book3s64-mm-don-t-do-tlbie-fixup-for-some-hardware-revisions.patch
queue-4.14/selftests-powerpc-add-test-case-for-tlbie-vs-mtpidr-ordering-issue.patch
queue-4.14/selftests-powerpc-fix-compile-error-on-tlbie_test-due-to-newer-gcc.patch
queue-4.14/powerpc-mm-fixup-tlbie-vs-mtpidr-mtlpidr-ordering-issue-on-power9.patch
queue-4.14/powerpc-mm-fixup-tlbie-vs-store-ordering-issue-on-power9.patch
queue-4.14/powerpc-book3s64-radix-rename-cpu_ftr_p9_tlbie_bug-feature-flag.patch