fs/ntfs3: Fix general protection fault in run_is_mapped_full

commit a33fb01 upstream. Fixed deleating of a non-resident attribute in ntfs_create_inode() rollback. Reported-by: [email protected] Signed-off-by: Konstantin Komarov <[email protected]> Signed-off-by: Bin Lan <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
frank-w · Nov 17, 2024 · 509c1c6 · 509c1c6
1 parent ba0b09a
commit 509c1c6
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
@@ -1646,6 +1646,15 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
 			  le16_to_cpu(new_de->key_size), sbi);
 	/* ni_unlock(dir_ni); will be called later. */
 out6:
+	attr = ni_find_attr(ni, NULL, NULL, ATTR_EA, NULL, 0, NULL, NULL);
+	if (attr && attr->non_res) {
+		/* Delete ATTR_EA, if non-resident. */
+		struct runs_tree run;
+		run_init(&run);
+		attr_set_size(ni, ATTR_EA, NULL, 0, &run, 0, NULL, false, NULL);
+		run_close(&run);
+	}
+
 	if (rp_inserted)
 		ntfs_remove_reparse(sbi, IO_REPARSE_TAG_SYMLINK, &new_de->ref);