On Wed, 12 Oct 2016 10:57:03 +0100 Catalin Marinas <catalin.mari...@arm.com>
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 <a...@linux-foundation.org>
> Cc: Andy Lutomirski <l...@kernel.org>
> Cc: CAI Qian <caiq...@redhat.com>
> Reported-by: CAI Qian <caiq...@redhat.com>
> Signed-off-by: Catalin Marinas <catalin.mari...@arm.com>
I'll add
Cc: <sta...@vger.kernel.org> [4.8.x]
