Hello there,

[linux-4.2-rc2/arch/um/drivers/net_user.c:258]: (error) va_list 'ap' was opened 
but not closed by va_end().

Source code is

    va_start(ap, str);
    while ((arg = va_arg(ap, char **)) != NULL) {
        if (*str == '\0')
            return NULL;
        end = strchr(str, ',');
        if (end != str)
            *arg = str;
        if (end == NULL)
            return NULL;
        *end++ = '\0';
        str = end;
    }
    va_end(ap);
    return str;

If va_end needs to be called for successful return, it probably also
needs to be called for NULL return (twice).

Regards

David Binderman

                                          
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