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Merge "Clean MTE and GWP-ASan runtime flags after use." into rvc-dev

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This commit is contained in:
Evgenii Stepanov
2020-06-04 23:41:57 +00:00
committed by Android (Google) Code Review
parent f9b47aa8c6 5611fa78ca
commit 1a7be751e1
1 changed files with 4 additions and 0 deletions
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core/jni/com_android_internal_os_Zygote.cpp
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@@ -1744,6 +1744,8 @@ static void SpecializeCommon(JNIEnv* env, uid_t uid, gid_t gid, jintArray gids,
heap_tagging_level = M_HEAP_TAGGING_LEVEL_NONE; heap_tagging_level = M_HEAP_TAGGING_LEVEL_NONE;
} }
android_mallopt(M_SET_HEAP_TAGGING_LEVEL, &heap_tagging_level, sizeof(heap_tagging_level)); android_mallopt(M_SET_HEAP_TAGGING_LEVEL, &heap_tagging_level, sizeof(heap_tagging_level));
// Now that we've used the flag, clear it so that we don't pass unknown flags to the ART runtime.
runtime_flags &= ~RuntimeFlags::MEMORY_TAG_LEVEL_MASK;
bool forceEnableGwpAsan = false; bool forceEnableGwpAsan = false;
switch (runtime_flags & RuntimeFlags::GWP_ASAN_LEVEL_MASK) { switch (runtime_flags & RuntimeFlags::GWP_ASAN_LEVEL_MASK) {
@@ -1756,6 +1758,8 @@ static void SpecializeCommon(JNIEnv* env, uid_t uid, gid_t gid, jintArray gids,
case RuntimeFlags::GWP_ASAN_LEVEL_LOTTERY: case RuntimeFlags::GWP_ASAN_LEVEL_LOTTERY:
android_mallopt(M_INITIALIZE_GWP_ASAN, &forceEnableGwpAsan, sizeof(forceEnableGwpAsan)); android_mallopt(M_INITIALIZE_GWP_ASAN, &forceEnableGwpAsan, sizeof(forceEnableGwpAsan));
} }
// Now that we've used the flag, clear it so that we don't pass unknown flags to the ART runtime.
runtime_flags &= ~RuntimeFlags::GWP_ASAN_LEVEL_MASK;
if (NeedsNoRandomizeWorkaround()) { if (NeedsNoRandomizeWorkaround()) {
// Work around ARM kernel ASLR lossage (http://b/5817320). // Work around ARM kernel ASLR lossage (http://b/5817320).