libvncserver: multithread support
obmc-ikvm runs with two seprated thread to handle connection from user
(bmcweb::kvm_websocket) and video device (libvncserver), however both
these two thread access to rfb*() API. It leads to client socket double
free issue.
cl->sock has been set to RFB_INVALID_SOCKET(-1) with first clientClose
call.
And the second call to clientClose uses -1 in FD_CLR() generates buffer
overflow.
```
obmc-ikvm[672]: 24/08/2021 08:45:11 rfbClientConnectionGone: c1=75900748
obmc-ikvm[672]: 24/08/2021 08:45:11 rfbClientConnectionGone: c1=75900748
obmc-ikvm[672]: 24/08/2021 08:45:11 rfbSendUpdateBuf: write: Broken pipe
obmc-ikvm[672]: *** buffer overflow detected ***: terminated
systemd[1]: start-ipkvm.service: Main process exited, code=dumped,
status=6/ABRT
systemd[1]: start-ipkvm.service: Failed with result 'core-dump'.
systemd[1]: start-ipkvm.service: Scheduled restart job, restart counter
is at 1.
systemd[1]: Stopped OpenBMC ipKVM daemon.
```
Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
Change-Id: I4bbe69c6d7006e44c5f4a532fb54f9ae9c9cd52b
diff --git a/meta-phosphor/recipes-graphics/libvncserver/libvncserver_%.bbappend b/meta-phosphor/recipes-graphics/libvncserver/libvncserver_%.bbappend
index fa15047..76d915c 100644
--- a/meta-phosphor/recipes-graphics/libvncserver/libvncserver_%.bbappend
+++ b/meta-phosphor/recipes-graphics/libvncserver/libvncserver_%.bbappend
@@ -1 +1 @@
-PACKAGECONFIG = "jpeg lzo systemd zlib openssl"
+PACKAGECONFIG = "jpeg lzo systemd zlib openssl pthread"