Thread (8 messages) 8 messages, 2 authors, 2021-12-03
STALE1639d

[PATCH 6/6] lib/ext2fs: call ext2fs_free_mem() to free &io->name in exception branch

From: zhanchengbin <hidden>
Date: 2021-12-03 06:31:17
Subsystem: library code, the rest · Maintainers: Andrew Morton, Linus Torvalds

In the exception branch,if we donot call ext2fs_free_mem() to
free &io->name, memory leak will occur.

Signed-off-by: zhanchengbin <redacted>
Signed-off-by: Zhiqiang Liu <redacted>
---
  lib/ext2fs/test_io.c | 2 ++
  lib/ext2fs/undo_io.c | 2 ++
  2 files changed, 4 insertions(+)
diff --git a/lib/ext2fs/test_io.c b/lib/ext2fs/test_io.c
index 480e68fc..6843edbc 100644
--- a/lib/ext2fs/test_io.c
+++ b/lib/ext2fs/test_io.c
@@ -248,6 +248,8 @@ static errcode_t test_open(const char *name, int 
flags, io_channel *channel)
      return 0;

  cleanup:
+    if (io && io->name)
+        ext2fs_free_mem(&io->name);
      if (io)
          ext2fs_free_mem(&io);
      if (data)
diff --git a/lib/ext2fs/undo_io.c b/lib/ext2fs/undo_io.c
index eb56f53d..0d4915cb 100644
--- a/lib/ext2fs/undo_io.c
+++ b/lib/ext2fs/undo_io.c
@@ -788,6 +788,8 @@ cleanup:
          free(data->tdb_file);
      if (data && data->real)
          io_channel_close(data->real);
+    if (io && io->name)
+        ext2fs_free_mem(&io->name);
      if (data)
          ext2fs_free_mem(&data);
      if (io)
-- 
2.23.0
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