Saw this valgrind report about the issue ==30891== Syscall param sendmsg(msg.msg_iov[0]) points to uninitialised byte(s) ==30891== at 0x3B8FF01850: __sendmsg_nocancel (syscall-template.S:81) ==30891== by 0x410602: classic_send_message (dbus.c:561) ==30891== by 0x40F4A1: message_write_handler (dbus.c:173) ==30891== by 0x419D56: io_callback (io.c:138) ==30891== by 0x40BBC2: l_main_run (main.c:346) ==30891== by 0x401ECF: main (main.c:160) ==30891== Address 0x4c59304 is 4 bytes inside a block of size 12 alloc'd ==30891== at 0x4A06BCF: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==30891== by 0x4A08A9D: realloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==30891== by 0x409A7D: l_realloc (util.c:92) ==30891== by 0x413A3E: message_new_common (dbus-message.c:201) ==30891== by 0x414B73: _dbus_message_new_method_call (dbus-message.c:221) ==30891== by 0x408A8B: send_request (agent.c:102) ==30891== by 0x408D28: agent_finalize_pending (agent.c:157) ==30891== by 0x408F9D: request_timeout (agent.c:241) ==30891== by 0x40C349: timeout_callback (timeout.c:78) ==30891== by 0x40BBC2: l_main_run (main.c:346) ==30891== by 0x401ECF: main (main.c:160) ==30891== --- ell/dbus-message.c | 1 + 1 file changed, 1 insertion(+) diff --git a/ell/dbus-message.c b/ell/dbus-message.c index 159df82..8743d66 100644 --- a/ell/dbus-message.c +++ b/ell/dbus-message.c @@ -200,6 +200,7 @@ static struct l_dbus_message *message_new_common(uint8_t type, uint8_t flags, */ message->header = l_realloc(NULL, 12); message->header_size = 12; + memset(message->header, 0, 12); hdr = message->header; hdr->endian = DBUS_NATIVE_ENDIAN; -- 2.1.0