michaelh/zephyr
1
0
Fork 0
Code Releases Activity

tests: userspace: check TLS location

Browse source 
Ensure that the TLS region is within the stack object.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2020-05-26 10:00:52 -07:00 • committed by Carles Cufí
commit 4cdaa71444
1 changed files with 39 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

40
tests/kernel/mem_protect/userspace/src/main.c
View file

@ -1224,6 +1224,43 @@ void test_tls_leakage(void)
_current->userspace_local_data, NULL, NULL);
}
#define TLS_SIZE 4096
struct k_thread tls_thread;
K_THREAD_STACK_DEFINE(tls_stack, TLS_SIZE);
void tls_entry(void *p1, void *p2, void *p3)
{
printk("tls_entry\n");
}
void test_tls_pointer(void)
{
k_thread_create(&tls_thread, tls_stack, TLS_SIZE, tls_entry,
NULL, NULL, NULL, 1, K_USER, K_FOREVER);
printk("tls pointer for thread %p: %p\n",
&tls_thread, (void *)tls_thread.userspace_local_data);
printk("stack buffer reported bounds: [%p, %p)\n",
(void *)tls_thread.stack_info.start,
(void *)(tls_thread.stack_info.start +
tls_thread.stack_info.size));
printk("stack object bounds: [%p, %p)\n",
tls_stack, tls_stack + sizeof(tls_stack));
uintptr_t tls_start = (uintptr_t)tls_thread.userspace_local_data;
uintptr_t tls_end = tls_start +
sizeof(struct _thread_userspace_local_data);
if ((tls_start < (uintptr_t)tls_stack) ||
(tls_end > (uintptr_t)tls_stack + sizeof(tls_stack))) {
printk("tls area out of bounds\n");
ztest_test_fail();
}
}
void test_main(void)
{
struct k_mem_partition *parts[] = {&part0, &part1,
@ -1288,7 +1325,8 @@ void test_main(void)
ztest_user_unit_test(test_oops_stackcheck),
ztest_unit_test(test_object_recycle),
ztest_user_unit_test(test_syscall_context),
ztest_unit_test(test_tls_leakage)
ztest_unit_test(test_tls_leakage),
ztest_unit_test(test_tls_pointer)
);
ztest_run_test_suite(userspace);
}