tty: vt: fix up tabstops properly

[pandora-kernel.git] / kernel / relay.c

diff --git a/kernel/relay.c b/kernel/relay.c
index 226fade..8995ceb 100644 (file)
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -164,10 +164,14 @@ depopulate:
  */
 static struct rchan_buf *relay_create_buf(struct rchan *chan)
 {
-       struct rchan_buf *buf = kzalloc(sizeof(struct rchan_buf), GFP_KERNEL);
-       if (!buf)
+       struct rchan_buf *buf;
+
+       if (chan->n_subbufs > KMALLOC_MAX_SIZE / sizeof(size_t *))
                return NULL;
 
+       buf = kzalloc(sizeof(struct rchan_buf), GFP_KERNEL);
+       if (!buf)
+               return NULL;
        buf->padding = kmalloc(chan->n_subbufs * sizeof(size_t *), GFP_KERNEL);
        if (!buf->padding)
                goto free_buf;
@@ -574,6 +578,8 @@ struct rchan *relay_open(const char *base_filename,
 
        if (!(subbuf_size && n_subbufs))
                return NULL;
+       if (subbuf_size > UINT_MAX / n_subbufs)
+               return NULL;
 
        chan = kzalloc(sizeof(struct rchan), GFP_KERNEL);
        if (!chan)
@@ -1229,6 +1235,7 @@ static ssize_t subbuf_splice_actor(struct file *in,
        struct splice_pipe_desc spd = {
                .pages = pages,
                .nr_pages = 0,
+               .nr_pages_max = PIPE_DEF_BUFFERS,
                .partial = partial,
                .flags = flags,
                .ops = &relay_pipe_buf_ops,
@@ -1296,8 +1303,8 @@ static ssize_t subbuf_splice_actor(struct file *in,
                 ret += padding;
 
 out:
-       splice_shrink_spd(pipe, &spd);
-        return ret;
+       splice_shrink_spd(&spd);
+       return ret;
 }
 
 static ssize_t relay_file_splice_read(struct file *in,