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selftests/sgx: Dump enclave memory map

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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().

Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Jarkko Sakkinen 2021-06-10 11:30:19 +03:00 committed by Shuah Khan
parent 235d1c9c63
commit 040efd1c35
1 changed files with 14 additions and 0 deletions
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14
tools/testing/selftests/sgx/main.c
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@ -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);