From: Nicolas Pitre <nicolas.pitre@linaro.org>
Date: Wed, 9 Jan 2019 03:55:00 +0000 (-0500)
Subject: vt: always call notifier with the console lock held
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0fef97ac145287bbf83e70bf84632fd506995018;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

vt: always call notifier with the console lock held

[ Upstream commit 7e1d226345f89ad5d0216a9092c81386c89b4983 ]

Every invocation of notify_write() and notify_update() is performed
under the console lock, except for one case. Let's fix that.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 1fb5e7f409c4..6ff921cf9a9e 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -2435,8 +2435,8 @@ rescan_last_byte:
 	}
 	con_flush(vc, draw_from, draw_to, &draw_x);
 	console_conditional_schedule();
-	console_unlock();
 	notify_update(vc);
+	console_unlock();
 	return n;
 }