linux-kernel - [PATCH 8/9] drm/nouveau/kms: Fix runtime PM leak in nouveau_display_acpi

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>] [day] [month] [year] [list]

Message-Id: <20200729213703.119137-9-lyude@redhat.com>
Date:   Wed, 29 Jul 2020 17:37:02 -0400
From:   Lyude Paul <lyude@...hat.com>
To:     nouveau@...ts.freedesktop.org
Cc:     stable@...r.kernel.org, Ben Skeggs <bskeggs@...hat.com>,
        dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 8/9] drm/nouveau/kms: Fix runtime PM leak in nouveau_display_acpi_ntfy()

Signed-off-by: Lyude Paul <lyude@...hat.com>
Fixes: 79e765ad665d ("drm/nouveau/drm/nouveau: Prevent handling ACPI HPD events too early")
Cc: stable@...r.kernel.org
Cc: Ben Skeggs <bskeggs@...hat.com>
Cc: dri-devel@...ts.freedesktop.org
Cc: nouveau@...ts.freedesktop.org
Cc: <stable@...r.kernel.org> # v4.19+
---
 drivers/gpu/drm/nouveau/nouveau_display.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index 96c9e7f550537..ad63d4f052deb 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -479,6 +479,8 @@ nouveau_display_acpi_ntfy(struct notifier_block *nb, unsigned long val,
 	} else {
 		NV_WARN(drm, "Dropped ACPI reprobe event due to RPM error: %d\n",
 			ret);
+		pm_runtime_mark_last_busy(drm->dev->dev);
+		pm_runtime_put_autosuspend(drm->dev->dev);
 	}
 
 	/* acpi-video should not generate keypresses for this */
-- 
2.26.2