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From: Sandipan Das <sandipan@linux.ibm.com>
To: gregkh@linuxfoundation.org
Cc: aneesh.kumar@linux.ibm.com,
	"Desnes A. Nunes do Rosario" <desnesn@linux.ibm.com>,
	linuxppc-dev@lists.ozlabs.org, stable@vger.kernel.org
Subject: [PATCH stable 4.14 6/6] selftests/powerpc: Fix compile error on tlbie_test due to newer gcc
Date: Thu, 17 Oct 2019 13:35:05 +0530
Message-ID: <20191017080505.8348-6-sandipan@linux.ibm.com> (raw)
In-Reply-To: <20191017080505.8348-1-sandipan@linux.ibm.com>

From: "Desnes A. Nunes do Rosario" <desnesn@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@vger.kernel.org # v4.14
Signed-off-by: Desnes A. Nunes do Rosario <desnesn@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@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@linux.ibm.com>
---
 tools/testing/selftests/powerpc/mm/tlbie_test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/powerpc/mm/tlbie_test.c b/tools/testing/selftests/powerpc/mm/tlbie_test.c
index 9868a5ddd847..f85a0938ab25 100644
--- 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);
-- 
2.21.0


  parent reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-17  8:05 [PATCH stable 4.14 1/6] powerpc/mm: Fixup tlbie vs store ordering issue on POWER9 Sandipan Das
2019-10-17  8:05 ` [PATCH stable 4.14 2/6] powerpc/book3s64/mm: Don't do tlbie fixup for some hardware revisions Sandipan Das
2019-11-08 16:56   ` Patch "powerpc/book3s64/mm: Don't do tlbie fixup for some hardware revisions" has been added to the 4.14-stable tree gregkh
2019-10-17  8:05 ` [PATCH stable 4.14 3/6] powerpc/book3s64/radix: Rename CPU_FTR_P9_TLBIE_BUG feature flag Sandipan Das
2019-11-08 16:56   ` Patch "powerpc/book3s64/radix: Rename CPU_FTR_P9_TLBIE_BUG feature flag" has been added to the 4.14-stable tree gregkh
2019-10-17  8:05 ` [PATCH stable 4.14 4/6] powerpc/mm: Fixup tlbie vs mtpidr/mtlpidr ordering issue on POWER9 Sandipan Das
2019-11-08 16:56   ` Patch "powerpc/mm: Fixup tlbie vs mtpidr/mtlpidr ordering issue on POWER9" has been added to the 4.14-stable tree gregkh
2019-10-17  8:05 ` [PATCH stable 4.14 5/6] selftests/powerpc: Add test case for tlbie vs mtpidr ordering issue Sandipan Das
2019-11-08 16:56   ` Patch "selftests/powerpc: Add test case for tlbie vs mtpidr ordering issue" has been added to the 4.14-stable tree gregkh
2019-10-17  8:05 ` Sandipan Das [this message]
2019-11-08 16:56   ` Patch "selftests/powerpc: Fix compile error on tlbie_test due to newer gcc" " gregkh
2019-11-08 16:56 ` Patch "powerpc/mm: Fixup tlbie vs store ordering issue on POWER9" " gregkh

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