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From: Jarkko Sakkinen <jarkko@kernel.org>
To: shuah@kernel.org
Cc: linux-kselftest@vger.kernel.org, linux-sgx@vger.kernel.org,
	Reinette Chatre <reinette.chatre@intel.com>,
	Jarkko Sakkinen <jarkko@kernel.org>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v8 3/5] selftests/sgx: Dump enclave memory map
Date: Thu, 10 Jun 2021 11:30:19 +0300	[thread overview]
Message-ID: <20210610083021.392269-3-jarkko@kernel.org> (raw)
In-Reply-To: <20210610083021.392269-1-jarkko@kernel.org>

Often, it's useful to check whether /proc/self/maps looks sane when
dealing with memory mapped objects, especially when they are JIT'ish
dynamically constructed objects. Therefore, dump "/dev/sgx_enclave"
matching lines from the memory map in FIXTURE_SETUP().

Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
---
 tools/testing/selftests/sgx/main.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c
index 6da19b6bf287..14030f8b85ff 100644
--- a/tools/testing/selftests/sgx/main.c
+++ b/tools/testing/selftests/sgx/main.c
@@ -117,6 +117,8 @@ FIXTURE_SETUP(enclave)
 	Elf64_Sym *sgx_enter_enclave_sym = NULL;
 	struct vdso_symtab symtab;
 	struct encl_segment *seg;
+	char maps_line[256];
+	FILE *maps_file;
 	unsigned int i;
 	void *addr;
 
@@ -167,6 +169,18 @@ FIXTURE_SETUP(enclave)
 	memset(&self->run, 0, sizeof(self->run));
 	self->run.tcs = self->encl.encl_base;
 
+	maps_file = fopen("/proc/self/maps", "r");
+	if (maps_file != NULL)  {
+		while (fgets(maps_line, sizeof(maps_line), maps_file) != NULL) {
+			maps_line[strlen(maps_line) - 1] = '\0';
+
+			if (strstr(maps_line, "/dev/sgx_enclave"))
+				TH_LOG("%s", maps_line);
+		}
+
+		fclose(maps_file);
+	}
+
 err:
 	if (!sgx_enter_enclave_sym)
 		encl_delete(&self->encl);
-- 
2.31.1


  parent reply	other threads:[~2021-06-10  8:30 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-10  8:30 [PATCH v8 1/5] selftests/sgx: Rename 'eenter' and 'sgx_call_vdso' Jarkko Sakkinen
2021-06-10  8:30 ` [PATCH v8 2/5] selftests/sgx: Migrate to kselftest harness Jarkko Sakkinen
2021-06-10  8:30 ` Jarkko Sakkinen [this message]
2021-06-11 22:45   ` [PATCH v8 3/5] selftests/sgx: Dump enclave memory map Shuah Khan
2021-06-12  0:34     ` Dave Hansen
2021-06-12  4:27     ` Jarkko Sakkinen
2021-06-14 16:45       ` Shuah Khan
2021-06-15 13:07         ` Jarkko Sakkinen
2021-06-10  8:30 ` [PATCH v8 4/5] selftests/sgx: Add EXPECT_EEXIT() macro Jarkko Sakkinen
2021-06-10  8:30 ` [PATCH v8 5/5] selftests/sgx: Refine the test enclave to have storage Jarkko Sakkinen
2021-06-14 20:16   ` Shuah Khan
2021-06-15 13:13     ` Jarkko Sakkinen
2021-06-15 13:15       ` Jarkko Sakkinen
2021-06-15 21:55         ` Shuah Khan
2021-06-18  9:07           ` Jarkko Sakkinen
2021-06-10 15:45 ` [PATCH v8 1/5] selftests/sgx: Rename 'eenter' and 'sgx_call_vdso' Dave Hansen
2021-06-11 17:35   ` Shuah Khan
2021-06-11 22:47     ` Shuah Khan

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