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Message-Id: <1355509370-5883-3-git-send-email-peter@hurleysoftware.com>
Date: Fri, 14 Dec 2012 13:22:41 -0500
From: Peter Hurley <peter@...leysoftware.com>
To: Alan Cox <alan@...ux.intel.com>, Jiri Slaby <jslaby@...e.cz>
Cc: linux-serial@...r.kernel.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Ilya Zykov <ilya@...x.ru>,
Sasha Levin <levinsasha928@...il.com>,
linux-kernel@...r.kernel.org,
Peter Hurley <peter@...leysoftware.com>
Subject: [PATCH v2 02/11] tty: WARN if buffer work racing with tty free
Signed-off-by: Peter Hurley <peter@...leysoftware.com>
---
drivers/tty/tty_io.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 78c3000..3d2b6d7 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -1511,6 +1511,8 @@ static void queue_release_one_tty(struct kref *kref)
{
struct tty_struct *tty = container_of(kref, struct tty_struct, kref);
+ WARN_ON(work_pending(&tty->port->buf.work));
+
/* The hangup queue is now free so we can reuse it rather than
waste a chunk of memory for each port */
INIT_WORK(&tty->hangup_work, release_one_tty);
--
1.8.0.1
--
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