Re: [PATCH] selftests/proc: avoid exit() from SIGALRM handler

[Alexey Dobriyan <adobriyan@gmail.com>]

On Fri, Sep 04, 2026 at 01:37:52PM +0100, Paul Dolan wrote:
> proc-tid0 uses SIGALRM to stop the test after one second, but the
> signal handler calls exit(), which is not async-signal-safe.
> 
> Set a sig_atomic_t flag from the handler instead and let the main loop
> terminate normally. This also preserves the existing atexit cleanup
> that kills the worker child.
> 
> Fixes: 0658a0961b0a ("procfs: do not list TID 0 in /proc/<pid>/task")
> Signed-off-by: Paul Dolan <paul.dolan.dev@gmail.com>

Yeah, yeah.

Reviewed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

>  static void sigalrm(int _)
>  {
> -	exit(0);
> +	alarmed = 1;
>  }