fs/squashfs: sqfs_close/sqfs_read_sblk: set ctxt.sblk to NULL after free
This will prevent a double free error if sqfs_close() is called twice.
Signed-off-by: Richard Genoud <richard.genoud@posteo.net>
diff --git a/fs/squashfs/sqfs.c b/fs/squashfs/sqfs.c
index 608a2bb..5de69ac 100644
--- a/fs/squashfs/sqfs.c
+++ b/fs/squashfs/sqfs.c
@@ -49,6 +49,7 @@
if (sqfs_disk_read(0, 1, *sblk) != 1) {
free(*sblk);
+ sblk = NULL;
return -EINVAL;
}
@@ -1689,9 +1690,10 @@
void sqfs_close(void)
{
+ sqfs_decompressor_cleanup(&ctxt);
free(ctxt.sblk);
+ ctxt.sblk = NULL;
ctxt.cur_dev = NULL;
- sqfs_decompressor_cleanup(&ctxt);
}
void sqfs_closedir(struct fs_dir_stream *dirs)