From: Jarkko Sakkinen jarkko@kernel.org
mainline inclusion from mainline-v5.14-rc1 commit 040efd1c35f93787cbd26be6fc6493592571f424 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4SIGI CVE: NA
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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().
Intel-SIG: commit 040efd1c35f9 selftests/sgx: Dump enclave memory map Backport for SGX Foundations support
Signed-off-by: Jarkko Sakkinen jarkko@kernel.org Signed-off-by: Shuah Khan skhan@linuxfoundation.org Signed-off-by: Fan Du fan.du@intel.com #openEuler_contributor Signed-off-by: Laibin Qiu qiulaibin@huawei.com Reviewed-by: Bamvor Zhang bamvor.zhang@suse.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- 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);