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 v6 3/3] selftests/sgx: Dump enclave memory map
Date: Wed, 26 May 2021 07:46:49 +0300 [thread overview]
Message-ID: <20210526044649.988789-3-jarkko@kernel.org> (raw)
In-Reply-To: <20210526044649.988789-1-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 0a2f20326c66..27e43870a9a1 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
prev parent reply other threads:[~2021-05-26 4:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-26 4:46 [PATCH v6 1/3] selftests/sgx: Rename 'eenter' and 'sgx_call_vdso' Jarkko Sakkinen
2021-05-26 4:46 ` [PATCH v6 2/3] selftests/sgx: Migrate to kselftest harness Jarkko Sakkinen
2021-05-26 4:46 ` Jarkko Sakkinen [this message]
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