Re: [Xen-devel] [PATCH 5/7] libxl: fork: Provide libxl_childproc_sigchld_occurred

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2014-01-16 at 17:22 +0000, Ian Jackson wrote:
> +        if (got == -1) {
> +            LIBXL__EVENT_DISASTER
> +                (egc, "waitpid() gave ECHILD but we have a child",
> +                 ECHILD, 0);
> +            /* it must have finished but we don't know its status */
> +            status = 255<<8; /* no wait.h macro for this! */
> +            assert(WIFEXITED(status));
> +            assert(WEXITSTATUS(status)==255);
> +            assert(!WIFSIGNALED(status));
> +            assert(!WIFSTOPPED(status));

This is quite exciting! How can this happen? Kernel bug or similar?

Either way, I suppose this is the best we can do under the circumstances
so:
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>



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