systemd/systemd-big-endian-reply-matching.patch

---
 src/libsystemd/sd-bus/sd-bus.c |   36 +++++++++++++++++++++++++++++++-----
 1 file changed, 31 insertions(+), 5 deletions(-)

Index: systemd-210/src/libsystemd/sd-bus/sd-bus.c
===================================================================
--- systemd-210.orig/src/libsystemd/sd-bus/sd-bus.c
+++ systemd-210/src/libsystemd/sd-bus/sd-bus.c
@@ -358,6 +358,29 @@ _public_ int sd_bus_set_name(sd_bus *bus
         return 0;
 }
 
+/*
+ * Wrap the hashmap lookups in helper functions to ensure that the
+ * cookie pointer is always cast to 64bit before passing it to any of the
+ * hashmap functions
+ */
+static inline int bus_add_reply_callback(sd_bus *bus, struct reply_callback *c, uint64_t cookie)
+{
+        return hashmap_put(bus->reply_callbacks, &cookie, c);
+}
+
+static inline struct reply_callback *bus_get_reply_callback(sd_bus *bus, uint64_t cookie)
+{
+        return hashmap_remove(bus->reply_callbacks, &cookie);
+}
+
+static inline void bus_drop_reply_callback(sd_bus *bus, const struct reply_callback *c)
+{
+        struct reply_callback *cc;
+
+        cc = bus_get_reply_callback(bus, c->cookie);
+        assert(cc == NULL || cc == c);
+}
+
 static int hello_callback(sd_bus *bus, sd_bus_message *reply, void *userdata, sd_bus_error *error) {
         const char *s;
         int r;
@@ -1757,7 +1780,7 @@ _public_ int sd_bus_call_async(
         c->cookie = BUS_MESSAGE_COOKIE(m);
         c->timeout = calc_elapse(m->timeout);
 
-        r = hashmap_put(bus->reply_callbacks, &c->cookie, c);
+        r = bus_add_reply_callback(bus, c, c->cookie);
         if (r < 0) {
                 free(c);
                 return r;
@@ -1788,7 +1811,7 @@ _public_ int sd_bus_call_async_cancel(sd
         assert_return(cookie != 0, -EINVAL);
         assert_return(!bus_pid_changed(bus), -ECHILD);
 
-        c = hashmap_remove(bus->reply_callbacks, &cookie);
+        c = bus_get_reply_callback(bus, cookie);
         if (!c)
                 return 0;
 
@@ -2062,7 +2085,7 @@ static int process_timeout(sd_bus *bus)
                 return r;
 
         assert_se(prioq_pop(bus->reply_callbacks_prioq) == c);
-        hashmap_remove(bus->reply_callbacks, &c->cookie);
+        bus_drop_reply_callback(bus, c);
 
         bus->current = m;
         bus->iteration_counter ++;
@@ -2110,7 +2133,9 @@ static int process_reply(sd_bus *bus, sd
             m->header->type != SD_BUS_MESSAGE_METHOD_ERROR)
                 return 0;
 
-        c = hashmap_remove(bus->reply_callbacks, &m->reply_cookie);
+        /* caveat emptor: reply_cookie is 32bit, but the hashmap lookup uses a 64bit
+         * cookie pointer - without type checking, */
+        c = bus_get_reply_callback(bus, m->reply_cookie);
         if (!c)
                 return 0;
 
@@ -2370,7 +2395,8 @@ static int process_closing(sd_bus *bus,
                 if (c->timeout != 0)
                         prioq_remove(bus->reply_callbacks_prioq, c, &c->prioq_idx);
 
-                hashmap_remove(bus->reply_callbacks, &c->cookie);
+                /* Remove callback from reply_callbacks hashmap */
+                bus_drop_reply_callback(bus, c);
 
                 bus->current = m;
                 bus->iteration_counter++;