Re: [syzbot] [ntfs3?] WARNING in indx_insert_into_buffer

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Subject: [ntfs3?] WARNING in indx_insert_into_buffer
Author: eadavis@qq.com

please test WARNING in indx_insert_into_buffer

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 037266a5f723

diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index cf92b2433f7a..a625302a3b1e 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -1909,8 +1909,11 @@ indx_insert_into_buffer(struct ntfs_index *indx, struct ntfs_inode *ni,
 		 * Undo critical operations.
 		 */
 		indx_mark_free(indx, ni, new_vbn >> indx->idx2vbn_bits);
-		memcpy(hdr1, hdr1_saved, used1);
+		kfree(hdr1);
+		hdr1 = (struct INDEX_HDR *)hdr1_saved;
 		indx_write(indx, ni, n1, 0);
+		kfree(up_e);
+		return err;
 	}
 
 out: