userspace app receive SIGSEGV, but not is crash, why?

[Rik van Riel]

On Mon, 2016-10-10 at 22:36 +0800, Lucha Chen wrote:
> Dear All,
>   userspace app receive SIGSEGV, but not crash, why?
>   The mtk kernel log is :
> <4>[67330.976640] -(6)[25390:ndroid.systemui][25390:ndroid.systemui]
> sig 11 to [25390:ndroid.systemui] stat=R
> 
The userspace application can tell the kernel
it has a handler for SIGSEGV. If it does that,
the kernel will make sure that the handler is
invoked when SIGSEGV is sent to the process.