--- y/include/linux/sched.h
+++ s/include/linux/sched.h
@@ -933,6 +933,9 @@ struct task_struct {
 	/* Recursion prevention for eventfd_signal() */
 	unsigned			in_eventfd_signal:1;
 #endif
+#ifdef CONFIG_FAULT_INJECTION
+	unsigned			fi_no_dump:1;
+#endif
 
 	unsigned long			atomic_flags; /* Flags requiring atomic access. */
 
--- y/lib/fault-inject.c
+++ x/lib/fault-inject.c
@@ -41,6 +41,8 @@ EXPORT_SYMBOL_GPL(setup_fault_attr);
 
 static void fail_dump(struct fault_attr *attr)
 {
+	if (current->fi_no_dump)
+		return;
 	if (attr->verbose > 0 && __ratelimit(&attr->ratelimit_state)) {
 		printk(KERN_NOTICE "FAULT_INJECTION: forcing a failure.\n"
 		       "name %pd, interval %lu, probability %lu, "
--- y/drivers/tty/pty.c
+++ p/drivers/tty/pty.c
@@ -117,10 +117,17 @@ static int pty_write(struct tty_struct *
 		return 0;
 
 	if (c > 0) {
+#ifdef CONFIG_FAULT_INJECTION
+		current->fi_no_dump = 1;
+#endif
 		spin_lock_irqsave(&to->port->lock, flags);
 		/* Stuff the data into the input queue of the other end */
 		c = tty_insert_flip_string(to->port, buf, c);
 		spin_unlock_irqrestore(&to->port->lock, flags);
+
+#ifdef CONFIG_FAULT_INJECTION
+		current->fi_no_dump = 0;
+#endif
 		/* And shovel */
 		if (c)
 			tty_flip_buffer_push(to->port);
--- y/include/linux/pagemap.h
+++ p/include/linux/pagemap.h
@@ -1085,6 +1085,8 @@ static inline struct page *readahead_pag
 {
 	struct folio *folio = __readahead_folio(ractl);
 
+	if (!folio)
+		return NULL;
 	return &folio->page;
 }
 
--- y/net/unix/af_unix.c
+++ a/net/unix/af_unix.c
@@ -970,15 +970,15 @@ static int unix_autobind(struct socket *
 		goto out;
 
 	err = -ENOMEM;
-	addr = kzalloc(sizeof(*addr) + sizeof(short) + 16, GFP_KERNEL);
+	addr = kzalloc(sizeof(*addr) + 16 + offsetof(struct sockaddr_un, sun_path), GFP_KERNEL);
 	if (!addr)
 		goto out;
 
+	addr->len = offsetof(struct sockaddr_un, sun_path) + 6;
 	addr->name->sun_family = AF_UNIX;
 	refcount_set(&addr->refcnt, 1);
 
 retry:
-	addr->len = sprintf(addr->name->sun_path+1, "%05x", ordernum) + 1 + sizeof(short);
 	addr->hash = unix_hash_fold(csum_partial(addr->name, addr->len, 0));
 	addr->hash ^= sk->sk_type;