On Wed, 12 Oct 2016 10:57:03 +0100 Catalin Marinas <[email protected]>
wrote:
> Commit 68f24b08ee89 ("sched/core: Free the stack early if
> CONFIG_THREAD_INFO_IN_TASK") may cause the task->stack to be freed
> during kmemleak_scan() execution, leading to either a NULL pointer
> fault (if task->stack is NULL) or kmemleak accessing already freed
> memory. This patch uses the new try_get_task_stack() API to ensure that
> the task stack is not freed during kmemleak stack scanning.
>
> Fixes: 68f24b08ee89 ("sched/core: Free the stack early if
> CONFIG_THREAD_INFO_IN_TASK")
> Cc: Andrew Morton <[email protected]>
> Cc: Andy Lutomirski <[email protected]>
> Cc: CAI Qian <[email protected]>
> Reported-by: CAI Qian <[email protected]>
> Signed-off-by: Catalin Marinas <[email protected]>
I'll add
Cc: <[email protected]> [4.8.x]
