Hi ! I enabled a greater debug level. It seems that cups try to write to a client while the connection is already closed.
Here the log before the crash : -------------------- Returning IPP successful-ok for Get-Job-Attributes (ipp://fichdc:631/printers/AL-C3800_cdi) from 172.16.1.23 cupsdProcessIPPRequest: ippLength(response)=352 cupsdAddSelect(fd=24, read_cb=0x7f8860956d60, write_cb=0x7f8860956720, data=0x7f8861d6c8f0) select_timeout(0): 26 seconds to write dirty config/state files cupsdReadClient(con=0x7f8861d6c8f0(24)) con->http.error=0 con->http.used=0, con->http.state=7 con->data_encoding=HTTP_ENCODE_LENGTH, con->data_remaining=352, con->file=-1 cupsdReadClient: 24 Closing on EOF cupsdCloseClient: 24 cupsdSetBusyState: newbusy="Dirty files", busy="Active clients and dirty files" cupsdRemoveSelect(fd=24) cupsdWriteClient(con=0x7f8861d6c8f0(1642895136)) response=(nil)(-1), file=-1 pipe_pid=0 state=0 cupsdWriteClient: 1587435144 Closing on unknown HTTP state 1641466080 -------------------- First cups open the client for reading on file descriptor 24 : -------------------- cupsdAddSelect(fd=24 ... select_timeout(0): 26 seconds... -------------------- Then Cups read from client (why ?) on fd=24 : -------------------- cupsdReadClient(con=0x7f8861d6c8f0(24) .... cupsdReadClient: 24 Closing on EOF -------------------- Finally cups close the connection : -------------------- cupsdCloseClient: 24 cupsdSetBusyState: newbusy="Dirty files", busy="Active clients and dirty files" cupsdRemoveSelect(fd=24) -------------------- But just after cups try to write again on the same connection con=0x7f8861d6c8f0 where all the structure is nil ! -------------------- cupsdWriteClient(con=0x7f8861d6c8f0(1642895136)) response=(nil)(-1), file=-1 pipe_pid=0 state=0 cupsdWriteClient: 1587435144 Closing on unknown HTTP state 1641466080 -------------------- Everything in less than 1 second. Difficult to understand for me what cups trying to do... Baptiste. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/512220 Title: cupsd crash "Closing on unknown HTTP state 0" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/512220/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
