Module: check_mk Branch: master Commit: 9d0692ed2ec575d53e2fba1bb55d502b669dca3d URL: http://git.mathias-kettner.de/git/?p=check_mk.git;a=commit;h=9d0692ed2ec575… Author: Sven Panne <sp(a)mathias-kettner.de> Date: Thu Mar 22 14:39:56 2018 +0100 Don't change a dictionary during iteration. 8-month old bug... Change-Id: I2fdfd6e2d8f108589ed93a17ac1a38c352ddb590 --- cmk/ec/main.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/cmk/ec/main.py b/cmk/ec/main.py index 1e17751..26534b5 100644 --- a/cmk/ec/main.py +++ b/cmk/ec/main.py @@ -1639,7 +1639,8 @@ class EventServer(ECServerThread): client_sockets[client_socket.fileno()] = (client_socket, address, "") # Read data from existing event unix socket connections - for fd, (cs, address, previous_data) in client_sockets.iteritems(): + # NOTE: We modify client_socket in the loop, so we need to copy below! + for fd, (cs, address, previous_data) in list(client_sockets.iteritems()): if fd in readable: # Receive next part of data try: