Here are some details from proc what is happening on our servers. Both running 4.15.0-47-generic.
server13 / uptime 2 days # cat /proc/fs/cifs/Stats Resources in use CIFS Session: 1 Share (unique mount targets): 2 SMB Request/Response Buffer: 1 Pool size: 5 SMB Small Req/Resp Buffer: 1 Pool size: 30 Operations (MIDs): 0 7 session 14 share reconnects Total vfs operations: 7223031 maximum at one time: 102 1) \\server\share SMBs: 13497286 Negotiates: 0 sent 0 failed SessionSetups: 0 sent 0 failed Logoffs: 0 sent 0 failed TreeConnects: 502 sent 0 failed TreeDisconnects: 0 sent 0 failed Creates: 0 sent 466291 failed Closes: 0 sent 2 failed Flushes: 0 sent 0 failed Reads: 0 sent 19 failed Writes: 0 sent 0 failed Locks: 0 sent 0 failed IOCTLs: 0 sent 0 failed Cancels: 0 sent 0 failed Echos: 0 sent 0 failed QueryDirectories: 0 sent 14011 failed ChangeNotifies: 0 sent 0 failed QueryInfos: 0 sent 0 failed SetInfos: 0 sent 0 failed OplockBreaks: 0 sent 16 failed server15 / uptime 5 days # cat /proc/fs/cifs/Stats Resources in use CIFS Session: 1 Share (unique mount targets): 2 SMB Request/Response Buffer: 1 Pool size: 5 SMB Small Req/Resp Buffer: 1 Pool size: 30 Operations (MIDs): 0 1 session 2 share reconnects Total vfs operations: 118861442 maximum at one time: 52 1) \\server\share SMBs: 122017565 Negotiates: 0 sent 0 failed SessionSetups: 0 sent 0 failed Logoffs: 0 sent 0 failed TreeConnects: 19970 sent 0 failed TreeDisconnects: 0 sent 0 failed Creates: 0 sent 738187 failed Closes: 0 sent 0 failed Flushes: 0 sent 0 failed Reads: 0 sent 41 failed Writes: 0 sent 0 failed Locks: 0 sent 0 failed IOCTLs: 0 sent 0 failed Cancels: 0 sent 0 failed Echos: 0 sent 0 failed QueryDirectories: 0 sent 9776 failed ChangeNotifies: 0 sent 0 failed QueryInfos: 0 sent 0 failed SetInfos: 0 sent 0 failed OplockBreaks: 0 sent 3301 failed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1824981 Title: cifs set_oplock buffer overflow in strcat To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1824981/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs