linux-kernel - [PATCH] fix for tty-serial-move-port

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Date:	Thu, 4 Dec 2008 20:16:17 +0300
From:	Alexander Beregalov <a.beregalov@...il.com>
To:	linux-next@...r.kernel.org, alan@...rguk.ukuu.org.uk,
	linux-kernel@...r.kernel.org
Subject: [PATCH] fix for tty-serial-move-port

Hi Alan

next-20081204 crashes with the following message:

BUG: unable to handle kernel paging request at ffff88007d320248
IP: [<ffffffff803de934>] uart_remove_one_port+0xef/0x111
                kfree(info);
     393:       49 8d 7d 10             lea    0x10(%r13),%rdi
     397:       e8 00 00 00 00          callq  39c <uart_remove_one_port+0xef>

Signed-off-by: Alexander Beregalov <a.beregalov@...il.com>
---

 drivers/serial/serial_core.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index e99a269..4fc25e4 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -2530,10 +2530,8 @@ int uart_remove_one_port(struct uart_driver *drv, struct uart_port *port)
 	/*
 	 * Kill the tasklet, and free resources.
 	 */
-	if (info) {
+	if (info)
 		tasklet_kill(&info->tlet);
-		kfree(info);
-	}
 
 	state->port = NULL;
 	mutex_unlock(&port_mutex);
--
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