On Tue, Mar 31, 2026 at 09:47:59PM +0200, Stefano Brivio wrote:
> Assuming that the kernel version is >= 5.9 (otherwise we don't have
> close_range() at all), you could try something like this:
> 
> ---
> diff --git a/passt.c b/passt.c
> index f84419c..d5dad4c 100644
> --- a/passt.c
> +++ b/passt.c
> @@ -340,6 +340,8 @@ int main(int argc, char **argv)
>  	struct timespec now;
>  	struct sigaction sa;
>  
> +	close_range(STDERR_FILENO + 1, ~0U, CLOSE_RANGE_UNSHARE);
> +
>  	if (clock_gettime(CLOCK_MONOTONIC, &log_start))
>  		die_perror("Failed to get CLOCK_MONOTONIC time");
>  
> ---

Thanks. I've build an updated package for the reporter and will let you
know once I get feedback from him

Johannes
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