diff options
| -rw-r--r-- | kernel/relay.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/relay.c b/kernel/relay.c index 4335e1d7ee2..ab56a1764d4 100644 --- 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 > UINT_MAX / 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) |