[PATCH 0/6] kselftest/arm64: MTE fixes

[PATCH 0/6] kselftest/arm64: MTE fixes

[Vincenzo Frascino]

This series contains a set of fixes for the arm64 MTE kselftests [1].

A version of the fixes rebased on 5.10-rc1 can be found at [2].

To verify the fixes it is possible to use the command below:

make -C tools/testing/selftests/ ARCH=arm64 TARGETS=arm64 ARM64_SUBTARGETS=mte \
        CC=<gcc compiler with MTE support>

[1] https://lore.kernel.org/lkml/20201002115630.24683-1-amit.kachhap@arm.com
[2] https://git.gitlab.arm.com/linux-arm/linux-vf.git mte/v5.fixes

Cc: Shuah Khan <shuah@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Gabor Kertesz <gabor.kertesz@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>

Vincenzo Frascino (6):
  kselftest/arm64: Fix check_buffer_fill test
  kselftest/arm64: Fix check_tags_inclusion test
  kselftest/arm64: Fix check_child_memory test
  kselftest/arm64: Fix check_mmap_options test
  kselftest/arm64: Fix check_ksm_options test
  kselftest/arm64: Fix check_user_mem test

 tools/testing/selftests/arm64/mte/check_buffer_fill.c    | 3 +++
 tools/testing/selftests/arm64/mte/check_child_memory.c   | 3 +++
 tools/testing/selftests/arm64/mte/check_ksm_options.c    | 4 ++++
 tools/testing/selftests/arm64/mte/check_mmap_options.c   | 4 ++++
 tools/testing/selftests/arm64/mte/check_tags_inclusion.c | 3 +++
 tools/testing/selftests/arm64/mte/check_user_mem.c       | 4 ++++
 6 files changed, 21 insertions(+)

-- 
2.28.0

[PATCH 1/6] kselftest/arm64: Fix check_buffer_fill test

[Vincenzo Frascino]

The check_buffer_fill test reports the error below because the test
plan is not declared correctly:

  # Planned tests != run tests (0 != 20)

Fix the test adding the correct test plan declaration.

Fixes: e9b60476bea0 ("kselftest/arm64: Add utilities and a test to validate mte memory")
Cc: Shuah Khan <shuah@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Gabor Kertesz <gabor.kertesz@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 tools/testing/selftests/arm64/mte/check_buffer_fill.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/arm64/mte/check_buffer_fill.c b/tools/testing/selftests/arm64/mte/check_buffer_fill.c
index 242635d79035..c9fa141ebdcc 100644
--- a/tools/testing/selftests/arm64/mte/check_buffer_fill.c
+++ b/tools/testing/selftests/arm64/mte/check_buffer_fill.c
@@ -417,6 +417,9 @@ int main(int argc, char *argv[])
 	/* Register SIGSEGV handler */
 	mte_register_signal(SIGSEGV, mte_default_handler);
 
+	/* Set test plan */
+	ksft_set_plan(20);
+
 	/* Buffer by byte tests */
 	evaluate_test(check_buffer_by_byte(USE_MMAP, MTE_SYNC_ERR),
 	"Check buffer correctness by byte with sync err mode and mmap memory\n");
-- 
2.28.0

[PATCH 2/6] kselftest/arm64: Fix check_tags_inclusion test

[Vincenzo Frascino]

The check_tags_inclusion test reports the error below because the test
plan is not declared correctly:

  # Planned tests != run tests (0 != 4)

Fix the test adding the correct test plan declaration.

Fixes: f3b2a26ca78d ("kselftest/arm64: Verify mte tag inclusion via prctl")
Cc: Shuah Khan <shuah@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Gabor Kertesz <gabor.kertesz@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 tools/testing/selftests/arm64/mte/check_tags_inclusion.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/arm64/mte/check_tags_inclusion.c b/tools/testing/selftests/arm64/mte/check_tags_inclusion.c
index 94d245a0ed56..deaef1f61076 100644
--- a/tools/testing/selftests/arm64/mte/check_tags_inclusion.c
+++ b/tools/testing/selftests/arm64/mte/check_tags_inclusion.c
@@ -170,6 +170,9 @@ int main(int argc, char *argv[])
 	/* Register SIGSEGV handler */
 	mte_register_signal(SIGSEGV, mte_default_handler);
 
+	/* Set test plan */
+	ksft_set_plan(4);
+
 	evaluate_test(check_single_included_tags(USE_MMAP, MTE_SYNC_ERR),
 		      "Check an included tag value with sync mode\n");
 	evaluate_test(check_multiple_included_tags(USE_MMAP, MTE_SYNC_ERR),
-- 
2.28.0

[PATCH 3/6] kselftest/arm64: Fix check_child_memory test

[Vincenzo Frascino]

The check_child_memory test reports the error below because the test
plan is not declared correctly:

  # Planned tests != run tests (0 != 12)

Fix the test adding the correct test plan declaration.

Fixes: dfe537cf4718 ("kselftest/arm64: Check forked child mte memory accessibility")
Cc: Shuah Khan <shuah@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Gabor Kertesz <gabor.kertesz@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 tools/testing/selftests/arm64/mte/check_child_memory.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/arm64/mte/check_child_memory.c b/tools/testing/selftests/arm64/mte/check_child_memory.c
index 97bebdecd29e..43bd94f853ba 100644
--- a/tools/testing/selftests/arm64/mte/check_child_memory.c
+++ b/tools/testing/selftests/arm64/mte/check_child_memory.c
@@ -163,6 +163,9 @@ int main(int argc, char *argv[])
 	mte_register_signal(SIGSEGV, mte_default_handler);
 	mte_register_signal(SIGBUS, mte_default_handler);
 
+	/* Set test plan */
+	ksft_set_plan(12);
+
 	evaluate_test(check_child_memory_mapping(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE),
 		"Check child anonymous memory with private mapping, precise mode and mmap memory\n");
 	evaluate_test(check_child_memory_mapping(USE_MMAP, MTE_SYNC_ERR, MAP_SHARED),
-- 
2.28.0

[PATCH 4/6] kselftest/arm64: Fix check_mmap_options test

[Vincenzo Frascino]

The check_mmap_options test reports the error below because the test
plan is not declared correctly:

  # Planned tests != run tests (0 != 22)

Fix the test adding the correct test plan declaration.

Fixes: 53ec81d23213 ("kselftest/arm64: Verify all different mmap MTE options")
Cc: Shuah Khan <shuah@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Gabor Kertesz <gabor.kertesz@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 tools/testing/selftests/arm64/mte/check_mmap_options.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/arm64/mte/check_mmap_options.c b/tools/testing/selftests/arm64/mte/check_mmap_options.c
index 33b13b86199b..a04b12c21ac9 100644
--- a/tools/testing/selftests/arm64/mte/check_mmap_options.c
+++ b/tools/testing/selftests/arm64/mte/check_mmap_options.c
@@ -205,7 +205,11 @@ int main(int argc, char *argv[])
 	mte_register_signal(SIGBUS, mte_default_handler);
 	mte_register_signal(SIGSEGV, mte_default_handler);
 
+	/* Set test plan */
+	ksft_set_plan(22);
+
 	mte_enable_pstate_tco();
+
 	evaluate_test(check_anonymous_memory_mapping(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE, TAG_CHECK_OFF),
 	"Check anonymous memory with private mapping, sync error mode, mmap memory and tag check off\n");
 	evaluate_test(check_file_memory_mapping(USE_MPROTECT, MTE_SYNC_ERR, MAP_PRIVATE, TAG_CHECK_OFF),
-- 
2.28.0

[PATCH 5/6] kselftest/arm64: Fix check_ksm_options test

[Vincenzo Frascino]

The check_ksm_options test reports the error below because the test
plan is not declared correctly:

  # Planned tests != run tests (0 != 4)

Fix the test adding the correct test plan declaration.

Fixes: f981d8fa2646 ("kselftest/arm64: Verify KSM page merge for MTE pages")
Cc: Shuah Khan <shuah@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Gabor Kertesz <gabor.kertesz@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 tools/testing/selftests/arm64/mte/check_ksm_options.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/arm64/mte/check_ksm_options.c b/tools/testing/selftests/arm64/mte/check_ksm_options.c
index bc41ae630c86..3b23c4d61d38 100644
--- a/tools/testing/selftests/arm64/mte/check_ksm_options.c
+++ b/tools/testing/selftests/arm64/mte/check_ksm_options.c
@@ -140,6 +140,10 @@ int main(int argc, char *argv[])
 	/* Register signal handlers */
 	mte_register_signal(SIGBUS, mte_default_handler);
 	mte_register_signal(SIGSEGV, mte_default_handler);
+
+	/* Set test plan */
+	ksft_set_plan(4);
+
 	/* Enable KSM */
 	mte_ksm_setup();
 
-- 
2.28.0

[PATCH 6/6] kselftest/arm64: Fix check_user_mem test

[Vincenzo Frascino]

The check_user_mem test reports the error below because the test
plan is not declared correctly:

  # Planned tests != run tests (0 != 4)

Fix the test adding the correct test plan declaration.

Fixes: 4dafc08d0ba4 ("kselftest/arm64: Check mte tagged user address in kernel")
Cc: Shuah Khan <shuah@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Gabor Kertesz <gabor.kertesz@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 tools/testing/selftests/arm64/mte/check_user_mem.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/arm64/mte/check_user_mem.c b/tools/testing/selftests/arm64/mte/check_user_mem.c
index 594e98e76880..4bfa80f2a8c3 100644
--- a/tools/testing/selftests/arm64/mte/check_user_mem.c
+++ b/tools/testing/selftests/arm64/mte/check_user_mem.c
@@ -92,9 +92,13 @@ int main(int argc, char *argv[])
 	err = mte_default_setup();
 	if (err)
 		return err;
+
 	/* Register signal handlers */
 	mte_register_signal(SIGSEGV, mte_default_handler);
 
+	/* Set test plan */
+	ksft_set_plan(4);
+
 	evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE),
 		"Check memory access from kernel in sync mode, private mapping and mmap memory\n");
 	evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_SYNC_ERR, MAP_SHARED),
-- 
2.28.0

Re: [PATCH 1/6] kselftest/arm64: Fix check_buffer_fill test

[Amit Kachhap]

On 10/26/20 5:42 PM, Vincenzo Frascino wrote:
> The check_buffer_fill test reports the error below because the test
> plan is not declared correctly:
> 
>    # Planned tests != run tests (0 != 20)
> 
> Fix the test adding the correct test plan declaration.

This change is required and got missed earlier.
Acked by: Amit Daniel Kachhap <amit.kachhap@arm.com>

> 
> Fixes: e9b60476bea0 ("kselftest/arm64: Add utilities and a test to validate mte memory")
> Cc: Shuah Khan <shuah@kernel.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Gabor Kertesz <gabor.kertesz@arm.com>
> Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
> ---
>   tools/testing/selftests/arm64/mte/check_buffer_fill.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/tools/testing/selftests/arm64/mte/check_buffer_fill.c b/tools/testing/selftests/arm64/mte/check_buffer_fill.c
> index 242635d79035..c9fa141ebdcc 100644
> --- a/tools/testing/selftests/arm64/mte/check_buffer_fill.c
> +++ b/tools/testing/selftests/arm64/mte/check_buffer_fill.c
> @@ -417,6 +417,9 @@ int main(int argc, char *argv[])
>   	/* Register SIGSEGV handler */
>   	mte_register_signal(SIGSEGV, mte_default_handler);
>   
> +	/* Set test plan */
> +	ksft_set_plan(20);
> +
>   	/* Buffer by byte tests */
>   	evaluate_test(check_buffer_by_byte(USE_MMAP, MTE_SYNC_ERR),
>   	"Check buffer correctness by byte with sync err mode and mmap memory\n");
> 

Re: [PATCH 2/6] kselftest/arm64: Fix check_tags_inclusion test

[Amit Kachhap]

On 10/26/20 5:42 PM, Vincenzo Frascino wrote:
> The check_tags_inclusion test reports the error below because the test
> plan is not declared correctly:
> 
>    # Planned tests != run tests (0 != 4)
> 
> Fix the test adding the correct test plan declaration.

This change is required and got missed earlier.
Acked by: Amit Daniel Kachhap <amit.kachhap@arm.com>

> 
> Fixes: f3b2a26ca78d ("kselftest/arm64: Verify mte tag inclusion via prctl")
> Cc: Shuah Khan <shuah@kernel.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Gabor Kertesz <gabor.kertesz@arm.com>
> Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
> ---
>   tools/testing/selftests/arm64/mte/check_tags_inclusion.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/tools/testing/selftests/arm64/mte/check_tags_inclusion.c b/tools/testing/selftests/arm64/mte/check_tags_inclusion.c
> index 94d245a0ed56..deaef1f61076 100644
> --- a/tools/testing/selftests/arm64/mte/check_tags_inclusion.c
> +++ b/tools/testing/selftests/arm64/mte/check_tags_inclusion.c
> @@ -170,6 +170,9 @@ int main(int argc, char *argv[])
>   	/* Register SIGSEGV handler */
>   	mte_register_signal(SIGSEGV, mte_default_handler);
>   
> +	/* Set test plan */
> +	ksft_set_plan(4);
> +
>   	evaluate_test(check_single_included_tags(USE_MMAP, MTE_SYNC_ERR),
>   		      "Check an included tag value with sync mode\n");
>   	evaluate_test(check_multiple_included_tags(USE_MMAP, MTE_SYNC_ERR),
> 

Re: [PATCH 3/6] kselftest/arm64: Fix check_child_memory test

[Amit Kachhap]

On 10/26/20 5:42 PM, Vincenzo Frascino wrote:
> The check_child_memory test reports the error below because the test
> plan is not declared correctly:
> 
>    # Planned tests != run tests (0 != 12)
> 
> Fix the test adding the correct test plan declaration.

This change is required and got missed earlier.
Acked by: Amit Daniel Kachhap <amit.kachhap@arm.com>

> 
> Fixes: dfe537cf4718 ("kselftest/arm64: Check forked child mte memory accessibility")
> Cc: Shuah Khan <shuah@kernel.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Gabor Kertesz <gabor.kertesz@arm.com>
> Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
> ---
>   tools/testing/selftests/arm64/mte/check_child_memory.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/tools/testing/selftests/arm64/mte/check_child_memory.c b/tools/testing/selftests/arm64/mte/check_child_memory.c
> index 97bebdecd29e..43bd94f853ba 100644
> --- a/tools/testing/selftests/arm64/mte/check_child_memory.c
> +++ b/tools/testing/selftests/arm64/mte/check_child_memory.c
> @@ -163,6 +163,9 @@ int main(int argc, char *argv[])
>   	mte_register_signal(SIGSEGV, mte_default_handler);
>   	mte_register_signal(SIGBUS, mte_default_handler);
>   
> +	/* Set test plan */
> +	ksft_set_plan(12);
> +
>   	evaluate_test(check_child_memory_mapping(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE),
>   		"Check child anonymous memory with private mapping, precise mode and mmap memory\n");
>   	evaluate_test(check_child_memory_mapping(USE_MMAP, MTE_SYNC_ERR, MAP_SHARED),
> 

Re: [PATCH 4/6] kselftest/arm64: Fix check_mmap_options test

[Amit Kachhap]

On 10/26/20 5:42 PM, Vincenzo Frascino wrote:
> The check_mmap_options test reports the error below because the test
> plan is not declared correctly:
> 
>    # Planned tests != run tests (0 != 22)
> 
> Fix the test adding the correct test plan declaration.

This change is required and got missed earlier.
Acked by: Amit Daniel Kachhap <amit.kachhap@arm.com>

> 
> Fixes: 53ec81d23213 ("kselftest/arm64: Verify all different mmap MTE options")
> Cc: Shuah Khan <shuah@kernel.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Gabor Kertesz <gabor.kertesz@arm.com>
> Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
> ---
>   tools/testing/selftests/arm64/mte/check_mmap_options.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/tools/testing/selftests/arm64/mte/check_mmap_options.c b/tools/testing/selftests/arm64/mte/check_mmap_options.c
> index 33b13b86199b..a04b12c21ac9 100644
> --- a/tools/testing/selftests/arm64/mte/check_mmap_options.c
> +++ b/tools/testing/selftests/arm64/mte/check_mmap_options.c
> @@ -205,7 +205,11 @@ int main(int argc, char *argv[])
>   	mte_register_signal(SIGBUS, mte_default_handler);
>   	mte_register_signal(SIGSEGV, mte_default_handler);
>   
> +	/* Set test plan */
> +	ksft_set_plan(22);
> +
>   	mte_enable_pstate_tco();
> +
>   	evaluate_test(check_anonymous_memory_mapping(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE, TAG_CHECK_OFF),
>   	"Check anonymous memory with private mapping, sync error mode, mmap memory and tag check off\n");
>   	evaluate_test(check_file_memory_mapping(USE_MPROTECT, MTE_SYNC_ERR, MAP_PRIVATE, TAG_CHECK_OFF),
> 

Re: [PATCH 5/6] kselftest/arm64: Fix check_ksm_options test

[Amit Kachhap]

On 10/26/20 5:42 PM, Vincenzo Frascino wrote:
> The check_ksm_options test reports the error below because the test
> plan is not declared correctly:
> 
>    # Planned tests != run tests (0 != 4)
> 
> Fix the test adding the correct test plan declaration.
This change makes sense and got missed earlier.
Acked by: Amit Daniel Kachhap <amit.kachhap@arm.com>

> 
> Fixes: f981d8fa2646 ("kselftest/arm64: Verify KSM page merge for MTE pages")
> Cc: Shuah Khan <shuah@kernel.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Gabor Kertesz <gabor.kertesz@arm.com>
> Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
> ---
>   tools/testing/selftests/arm64/mte/check_ksm_options.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/tools/testing/selftests/arm64/mte/check_ksm_options.c b/tools/testing/selftests/arm64/mte/check_ksm_options.c
> index bc41ae630c86..3b23c4d61d38 100644
> --- a/tools/testing/selftests/arm64/mte/check_ksm_options.c
> +++ b/tools/testing/selftests/arm64/mte/check_ksm_options.c
> @@ -140,6 +140,10 @@ int main(int argc, char *argv[])
>   	/* Register signal handlers */
>   	mte_register_signal(SIGBUS, mte_default_handler);
>   	mte_register_signal(SIGSEGV, mte_default_handler);
> +
> +	/* Set test plan */
> +	ksft_set_plan(4);
> +
>   	/* Enable KSM */
>   	mte_ksm_setup();
>   
> 

Re: [PATCH 6/6] kselftest/arm64: Fix check_user_mem test

[Amit Kachhap]

On 10/26/20 5:42 PM, Vincenzo Frascino wrote:
> The check_user_mem test reports the error below because the test
> plan is not declared correctly:
> 
>    # Planned tests != run tests (0 != 4)
> 
> Fix the test adding the correct test plan declaration.

This change looks fine and got missed earlier.
Acked by: Amit Daniel Kachhap <amit.kachhap@arm.com>

> 
> Fixes: 4dafc08d0ba4 ("kselftest/arm64: Check mte tagged user address in kernel")
> Cc: Shuah Khan <shuah@kernel.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Gabor Kertesz <gabor.kertesz@arm.com>
> Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
> ---
>   tools/testing/selftests/arm64/mte/check_user_mem.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/tools/testing/selftests/arm64/mte/check_user_mem.c b/tools/testing/selftests/arm64/mte/check_user_mem.c
> index 594e98e76880..4bfa80f2a8c3 100644
> --- a/tools/testing/selftests/arm64/mte/check_user_mem.c
> +++ b/tools/testing/selftests/arm64/mte/check_user_mem.c
> @@ -92,9 +92,13 @@ int main(int argc, char *argv[])
>   	err = mte_default_setup();
>   	if (err)
>   		return err;
> +
>   	/* Register signal handlers */
>   	mte_register_signal(SIGSEGV, mte_default_handler);
>   
> +	/* Set test plan */
> +	ksft_set_plan(4);
> +
>   	evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE),
>   		"Check memory access from kernel in sync mode, private mapping and mmap memory\n");
>   	evaluate_test(check_usermem_access_fault(USE_MMAP, MTE_SYNC_ERR, MAP_SHARED),
> 

Re: [PATCH 0/6] kselftest/arm64: MTE fixes

[Will Deacon]

On Mon, 26 Oct 2020 12:12:42 +0000, Vincenzo Frascino wrote:
> This series contains a set of fixes for the arm64 MTE kselftests [1].
> 
> A version of the fixes rebased on 5.10-rc1 can be found at [2].
> 
> To verify the fixes it is possible to use the command below:
> 
> make -C tools/testing/selftests/ ARCH=arm64 TARGETS=arm64 ARM64_SUBTARGETS=mte \
>         CC=<gcc compiler with MTE support>
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/6] kselftest/arm64: Fix check_buffer_fill test
      https://git.kernel.org/arm64/c/5bc7c1156f3f
[2/6] kselftest/arm64: Fix check_tags_inclusion test
      https://git.kernel.org/arm64/c/041fa41f5422
[3/6] kselftest/arm64: Fix check_child_memory test
      https://git.kernel.org/arm64/c/386cf789fa6d
[4/6] kselftest/arm64: Fix check_mmap_options test
      https://git.kernel.org/arm64/c/7419390a466e
[5/6] kselftest/arm64: Fix check_ksm_options test
      https://git.kernel.org/arm64/c/cbb268af05de
[6/6] kselftest/arm64: Fix check_user_mem test
      https://git.kernel.org/arm64/c/493b35db0548

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev