crasher: add a case that leaks until OOM-kill.
Bug: http://b/63143027
Test: adb shell crasher leak
Change-Id: I6e4105972ef3d86430d0f332938f5fd33ebae100
diff --git a/debuggerd/crasher/crasher.cpp b/debuggerd/crasher/crasher.cpp
index 6970201..f57349b 100644
--- a/debuggerd/crasher/crasher.cpp
+++ b/debuggerd/crasher/crasher.cpp
@@ -134,6 +134,14 @@
free(buf); // GCC is smart enough to warn about this, but we're doing it deliberately.
}
+noinline void leak() {
+ while (true) {
+ void* mapping =
+ mmap(nullptr, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ static_cast<volatile char*>(mapping)[0] = 'a';
+ }
+}
+
noinline void sigsegv_non_null() {
int* a = (int *)(&do_action);
*a = 42;
@@ -160,8 +168,8 @@
fprintf(stderr, " stack-overflow recurse until the stack overflows\n");
fprintf(stderr, " nostack crash with a NULL stack pointer\n");
fprintf(stderr, "\n");
- fprintf(stderr, " heap-corruption cause a libc abort by corrupting the heap\n");
fprintf(stderr, " heap-usage cause a libc abort by abusing a heap function\n");
+ fprintf(stderr, " leak leak memory until we get OOM-killed\n");
fprintf(stderr, "\n");
fprintf(stderr, " abort call abort()\n");
fprintf(stderr, " assert call assert() without a function\n");
@@ -265,6 +273,8 @@
return pthread_join(0, nullptr);
} else if (!strcasecmp(arg, "heap-usage")) {
abuse_heap();
+ } else if (!strcasecmp(arg, "leak")) {
+ leak();
} else if (!strcasecmp(arg, "SIGSEGV-unmapped")) {
char* map = reinterpret_cast<char*>(mmap(nullptr, sizeof(int), PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, -1, 0));