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Subject: media: v4l: async: Fix duplicated list deletion
Author: Sebastian Reichel <s...@kernel.org>
Date: Mon Nov 13 23:57:23 2023 +0100
The list deletion call dropped here is already called from the
helper function in the line before. Having a second list_del()
call results in either a warning (with CONFIG_DEBUG_LIST=y):
list_del corruption, c46c8198->next is LIST_POISON1 (00000100)
If CONFIG_DEBUG_LIST is disabled the operation results in a
kernel error due to NULL pointer dereference.
Fixes: 28a1295795d8 ("media: v4l: async: Allow multiple connections between
entities")
Signed-off-by: Sebastian Reichel <s...@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/v4l2-core/v4l2-async.c | 1 -
1 file changed, 1 deletion(-)
---
diff --git a/drivers/media/v4l2-core/v4l2-async.c
b/drivers/media/v4l2-core/v4l2-async.c
index 091e8cf4114b..8cfd593d293d 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -880,7 +880,6 @@ void v4l2_async_unregister_subdev(struct v4l2_subdev *sd)
&asc->notifier->waiting_list);
v4l2_async_unbind_subdev_one(asc->notifier, asc);
- list_del(&asc->asc_subdev_entry);
}
}
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