Forwarded: KMSAN: uninit-value in n_tty_receive_buf_closing (3)

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Subject: KMSAN: uninit-value in n_tty_receive_buf_closing (3)
Author: rampxxxx@xxxxxxxxx

#syz test

---

diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 79f0ff94ce00..b297e3fafdf7 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -177,7 +177,7 @@ static struct tty_buffer *tty_buffer_alloc(struct
tty_port *port, size_t size)
        */
       if (atomic_read(&port->buf.mem_used) > port->buf.mem_limit)
               return NULL;
-       p = kmalloc(struct_size(p, data, 2 * size), GFP_ATOMIC | __GFP_NOWARN);
+       p = kzalloc(struct_size(p, data, 2 * size), GFP_ATOMIC | __GFP_NOWARN);
       if (p == NULL)
               return NULL;