Fix nullptr access when cow reader open fails

Bug: 260805150 Test: th Change-Id: Id945cc4fa0fce141e3d52b8259241e22ba590ebd
2022-12-02 09:50:44 -08:00 · 2022-12-02 09:50:44 -08:00 · bc1a5b1393
parent ccf13942e0
commit bc1a5b1393
1 changed files with 3 additions and 0 deletions
--- a/fs_mgr/libsnapshot/snapshot_writer.cpp
+++ b/fs_mgr/libsnapshot/snapshot_writer.cpp
@ -93,6 +93,9 @@ bool CompressedSnapshotWriter::VerifyMergeOps() const noexcept {

 std::unique_ptr<FileDescriptor> CompressedSnapshotWriter::OpenReader() {
    auto cow = OpenCowReader();
+    if (cow == nullptr) {
+        return nullptr;
+    }

    auto reader = std::make_unique<CompressedSnapshotReader>();
    if (!reader->SetCow(std::move(cow))) {