Patch "fs/ntfs3: Mark ntfs dirty when on-disk struct is corrupted" has been added to the 6.4-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    fs/ntfs3: Mark ntfs dirty when on-disk struct is corrupted

to the 6.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     fs-ntfs3-mark-ntfs-dirty-when-on-disk-struct-is-corr.patch
and it can be found in the queue-6.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 5cf79e0661746899c2ff4720d1f64ad18af61110
Author: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>
Date:   Mon May 8 11:36:28 2023 +0400

    fs/ntfs3: Mark ntfs dirty when on-disk struct is corrupted
    
    [ Upstream commit e0f363a98830e8d7d70fbaf91c07ae0b7c57aafe ]
    
    Signed-off-by: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/ntfs3/fsntfs.c b/fs/ntfs3/fsntfs.c
index 28cc421102e59..21567e58265c4 100644
--- a/fs/ntfs3/fsntfs.c
+++ b/fs/ntfs3/fsntfs.c
@@ -178,7 +178,7 @@ int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes,
 	/* Check errors. */
 	if ((fo & 1) || fo + fn * sizeof(short) > SECTOR_SIZE || !fn-- ||
 	    fn * SECTOR_SIZE > bytes) {
-		return -EINVAL; /* Native chkntfs returns ok! */
+		return -E_NTFS_CORRUPT;
 	}
 
 	/* Get fixup pointer. */
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 0a48d2d672198..b40da258e6848 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -1113,6 +1113,12 @@ int indx_read(struct ntfs_index *indx, struct ntfs_inode *ni, CLST vbn,
 	*node = in;
 
 out:
+	if (err == -E_NTFS_CORRUPT) {
+		ntfs_inode_err(&ni->vfs_inode, "directory corrupted");
+		ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_ERROR);
+		err = -EINVAL;
+	}
+
 	if (ib != in->index)
 		kfree(ib);
 
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index eb01f7e76479a..2e4be773728df 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -53,6 +53,8 @@ enum utf16_endian;
 #define E_NTFS_NONRESIDENT		556
 /* NTFS specific error code about punch hole. */
 #define E_NTFS_NOTALIGNED		557
+/* NTFS specific error code when on-disk struct is corrupted. */
+#define E_NTFS_CORRUPT			558
 
 
 /* sbi->flags */
diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c
index 7060f784c2d72..7974ca35a15c6 100644
--- a/fs/ntfs3/record.c
+++ b/fs/ntfs3/record.c
@@ -180,6 +180,12 @@ int mi_read(struct mft_inode *mi, bool is_mft)
 	return 0;
 
 out:
+	if (err == -E_NTFS_CORRUPT) {
+		ntfs_err(sbi->sb, "mft corrupted");
+		ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
+		err = -EINVAL;
+	}
+
 	return err;
 }