linux-kernel - [PATCH 03/33] vt: might_sleep() annotation for do_blank

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190520082216.26273-4-daniel.vetter@ffwll.ch>
Date:   Mon, 20 May 2019 10:21:46 +0200
From:   Daniel Vetter <daniel.vetter@...ll.ch>
To:     DRI Development <dri-devel@...ts.freedesktop.org>
Cc:     Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Nicolas Pitre <nicolas.pitre@...aro.org>,
        Adam Borowski <kilobyte@...band.pl>,
        Martin Hostettler <textshell@...uujin.de>,
        Mikulas Patocka <mpatocka@...hat.com>
Subject: [PATCH 03/33] vt: might_sleep() annotation for do_blank_screen

For symmetry reasons with do_unblank_screen, except without the
oops_in_progress special case.

Just a drive-by annotation while I'm trying to untangle the fbcon vs.
fbdev screen blank/unblank maze.

Signed-off-by: Daniel Vetter <daniel.vetter@...el.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Nicolas Pitre <nicolas.pitre@...aro.org>
Cc: Adam Borowski <kilobyte@...band.pl>
Cc: Martin Hostettler <textshell@...uujin.de>
Cc: Daniel Vetter <daniel.vetter@...ll.ch>
Cc: Mikulas Patocka <mpatocka@...hat.com>
---
 drivers/tty/vt/vt.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 650c66886c80..8b4b3a49ec33 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -4158,6 +4158,8 @@ void do_blank_screen(int entering_gfx)
 	struct vc_data *vc = vc_cons[fg_console].d;
 	int i;
 
+	might_sleep();
+
 	WARN_CONSOLE_UNLOCKED();
 
 	if (console_blanked) {
-- 
2.20.1