From 36882e98b4b33d48949cfcc3700f39f24489bebd Mon Sep 17 00:00:00 2001
From: Daniel Zheng <zhengdaniel@google.com>
Date: Tue, 15 Aug 2023 13:32:48 -0700
Subject: [PATCH] ZSTD read from wrong buf

Fix zstd to read from ignore_buf rather than buf since that is where we
are first copying the date

Test: zstd ota
Change-Id: I5032300e4628ecd7e49f1fa9f76dc9a828fb58e6
---
 fs_mgr/libsnapshot/libsnapshot_cow/cow_decompress.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs_mgr/libsnapshot/libsnapshot_cow/cow_decompress.cpp b/fs_mgr/libsnapshot/libsnapshot_cow/cow_decompress.cpp
index 3692c1a8a..2aaf3883f 100644
--- a/fs_mgr/libsnapshot/libsnapshot_cow/cow_decompress.cpp
+++ b/fs_mgr/libsnapshot/libsnapshot_cow/cow_decompress.cpp
@@ -351,7 +351,7 @@ class ZstdDecompressor final : public IDecompressor {
             return decompressed_size;
         }
         std::vector<unsigned char> ignore_buf(decompressed_size);
-        if (!Decompress(buffer, decompressed_size)) {
+        if (!Decompress(ignore_buf.data(), decompressed_size)) {
             return -1;
         }
         memcpy(buffer, ignore_buf.data() + ignore_bytes, buffer_size);