Hi , 

What might be causing this, any ideas?

Server: Firebird 64bit classic on Ubuntu Linux (2.5.4.26856)

Client: Windows 10

After this error, the connection drops & client app hangs. 

Mar 24 15:05:58 kernel: [2481720.238260] fb_inet_server[10098]: segfault at 0 ip 00007f5cba31bb05 sp 00007f5cb86d4b90 error 4 in libfbembed.so.2.5.6[7f5cba1bf000+4cd000]

Mar 24 15:15:18 kernel: [2482279.943261] fb_inet_server[17806]: segfault at 123 ip 00007f8b42cc6cd0 sp 00007f8b410b9fc0 error 4 in libfbembed.so.2.5.6[7f8b42ba4000+4cd000]

Mar 24 15:25:59 kernel: [2482920.677121] fb_inet_server[30013]: segfault at 8 ip 00007feddb6df308 sp 00007fedd9ad40a0 error 4 in libfbembed.so.2.5.6[7feddb5be000+4cd000]

Mar 24 15:38:53 kernel: [2483694.618628] fb_inet_server[15604]: segfault at 0 ip 00007efc80eb6b05 sp 00007efc7f26fb90 error 4 in libfbembed.so.2.5.6[7efc80d5a000+4cd000]

Mar 24 16:45:33 kernel: [2487694.806177] fb_inet_server[20631]: segfault at 17f6b0109 ip 00007fb38fb92308 sp 00007fb38df870f0 error 4 in libfbembed.so.2.5.6[7fb38fa71000+4cd0