From: Dan Carpenter <dan.carpenter@oracle.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>,
linux-serial@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] serial: icom: dereference after free in load_code()
Date: Fri, 8 Nov 2013 12:53:48 +0300 [thread overview]
Message-ID: <20131108095348.GL27977@elgon.mountain> (raw)
We use "fw" in the next line after we release it. I've shifted the call
to release_firmware() down a couple lines to fix this.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c
index d98e433..6742380 100644
--- a/drivers/tty/serial/icom.c
+++ b/drivers/tty/serial/icom.c
@@ -455,11 +455,11 @@ static void load_code(struct icom_port *icom_port)
for (index = 0; index < fw->size; index++)
new_page[index] = fw->data[index];
- release_firmware(fw);
-
writeb((char) ((fw->size + 16)/16), &icom_port->dram->mac_length);
writel(temp_pci, &icom_port->dram->mac_load_addr);
+ release_firmware(fw);
+
/*Setting the syncReg to 0x80 causes adapter to start downloading
the personality code into adapter instruction RAM.
Once code is loaded, it will begin executing and, based on
reply other threads:[~2013-11-08 9:53 UTC|newest]
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