wimax/i2400m: fix oops when the TX FIFO fills up due to a missing check
When the TX FIFO filled up and i2400m_tx_new() failed to allocate a
new TX message header, a missing check for said condition was causing a
kernel oops when trying to dereference a NULL i2400m->tx_msg pointer.
Found and diagnosed by Cindy H. Kao.
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
diff --git a/drivers/net/wimax/i2400m/tx.c b/drivers/net/wimax/i2400m/tx.c
index 4295dcf..fa16ccf 100644
--- a/drivers/net/wimax/i2400m/tx.c
+++ b/drivers/net/wimax/i2400m/tx.c
@@ -653,6 +653,8 @@
i2400m_tx_close(i2400m);
i2400m_tx_new(i2400m);
}
+ if (i2400m->tx_msg == NULL)
+ goto error_tx_new;
if (i2400m->tx_msg->size + padded_len > I2400M_TX_BUF_SIZE / 2) {
d_printf(2, dev, "TX: message too big, going new\n");
i2400m_tx_close(i2400m);
