ext4: avoid calling ext4fs_mount() twice, which leaks
ext4_write_file() is only called from the "fs" layer, which calls both
ext4fs_mount() and ext4fs_close() before/after calling ext4_write_file().
Fix ext4_write_file() not to call ext4fs_mount() again, since the mount
operation malloc()s some RAM which is leaked when a second mount call
over-writes the pointer to that data, if no intervening close call is
made.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
diff --git a/fs/ext4/ext4_write.c b/fs/ext4/ext4_write.c
index d346c06..e027916 100644
--- a/fs/ext4/ext4_write.c
+++ b/fs/ext4/ext4_write.c
@@ -987,26 +987,17 @@
return -1;
}
- /* mount the filesystem */
- if (!ext4fs_mount(0)) {
- printf("** Error Bad ext4 partition **\n");
- goto fail;
- }
-
ret = ext4fs_write(filename, buf, len);
-
if (ret) {
printf("** Error ext4fs_write() **\n");
goto fail;
}
- ext4fs_close();
*actwrite = len;
return 0;
fail:
- ext4fs_close();
*actwrite = 0;
return -1;