From: jiangfeng@kylinos.cn
To: maarten.lankhorst@linux.intel.com, mripard@kernel.org,
tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch,
rodrigo.vivi@intel.com, andrealmeid@igalia.com,
christian.koenig@amd.com, raag.jadav@intel.com
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Feng Jiang <jiangfeng@kylinos.cn>
Subject: [PATCH] drm: Fix the length of event_string in drm_dev_wedged_event()
Date: Tue, 8 Apr 2025 09:32:19 +0800 [thread overview]
Message-ID: <20250408013219.26006-1-jiangfeng@kylinos.cn> (raw)
From: Feng Jiang <jiangfeng@kylinos.cn>
The format of the event_string value is `WEDGED=<method1>[,..,<methodN>]`,
so method should be appended after 'WEDGED=' rather than overwriting it.
Fixes: b7cf9f4ac1b8 ("drm: Introduce device wedged event")
Signed-off-by: Feng Jiang <jiangfeng@kylinos.cn>
---
drivers/gpu/drm/drm_drv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 17fc5dc708f4..58babdab9e66 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -549,7 +549,8 @@ int drm_dev_wedged_event(struct drm_device *dev, unsigned long method)
if (drm_WARN_ONCE(dev, !recovery, "invalid recovery method %u\n", opt))
break;
- len += scnprintf(event_string + len, sizeof(event_string), "%s,", recovery);
+ len += scnprintf(event_string + len,
+ sizeof(event_string) - len, "%s,", recovery);
}
if (recovery)
--
2.25.1
next reply other threads:[~2025-04-08 1:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-08 1:32 jiangfeng [this message]
2025-04-08 6:31 ` Raag Jadav
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