Submitted by: @hvlad

Crash of Firebird 2.5 on Linux was reported by user, below is call stack

#⁠1 0x00007fb4bf20dc64 in EDS::Statement::close (this=0x7fb4a37c38f0, tdbb=0x7fb4bd608680) at ../src/jrd/extds/ExtDS.cpp:1570
#⁠2 0x00007fb4bf1171e8 in EXE_unwind (tdbb=0x7fb4bd608680, request=0x7fb4afa69010) at ../src/jrd/exe.cpp:1103
#⁠3 0x00007fb4bf1a5879 in close_procedure (tdbb=0x7fb4bc1ff188, rsb=<value optimized out>) at ../src/jrd/rse.cpp:625
#⁠4 0x00007fb4bf117180 in EXE_unwind (tdbb=0x7fb4bd608680, request=0x7fb4a8359040) at ../src/jrd/exe.cpp:1092
#⁠5 0x00007fb4bf14db1b in JRD_unwind_request (tdbb=0x7fb4bd608680, request=0x7fb4a8359040, level=0) at ../src/jrd/jrd.cpp:7342
#⁠6 0x00007fb4bf286127 in close_cursor (tdbb=0x7fb4bd608680, request=0x7fb4a86fcd78) at ../src/dsql/dsql.cpp:925
#⁠7 0x00007fb4bf287c68 in DSQL_free_statement (tdbb=0x7fb4bd608680, request=0x7fb4a86fcd78, option=1) at ../src/dsql/dsql.cpp:572
#⁠8 0x00007fb4bf1d9487 in TRA_release_transaction (tdbb=0x7fb4bd608680, transaction=0x7fb4b4ecca48, trace=0x7fb4bd6082b0) at ../src/jrd/tra.cpp:1364
#⁠9 0x00007fb4bf1d9d71 in TRA_rollback (tdbb=0x7fb4bd608680, transaction=0x7fb4b4ecca48, retaining_flag=false, force_flag=false) at ../src/jrd/tra.cpp:1532
#⁠10 0x00007fb4bf15401c in rollback (tdbb=0x7fb4bd608680, transaction=<value optimized out>, retaining_flag=false) at ../src/jrd/jrd.cpp:5852
#⁠11 0x00007fb4bf1541a6 in JRD_rollback_transaction (tdbb=0x7fb4bc1ff188, transaction=0x7fb4bd60abb8) at ../src/jrd/jrd.cpp:7140
#⁠12 0x00007fb4bf155b11 in jrd8_rollback_transaction (user_status=0x7fb4bd608910, tra_handle=0x7fb4bd60abb8) at ../src/jrd/jrd.cpp:3251
#⁠13 0x00007fb4bf01e79e in isc_rollback_transaction (user_status=<value optimized out>, tra_handle=0x7fb4bc1ff290) at ../src/jrd/why.cpp:4491
#⁠14 0x00007fb4bf35a499 in rem_port::disconnect (this=0x7fb4bd611a08, sendL=0x7fb4bc1f8208, receiveL=0x7fb4bc1f8630) at ../src/remote/server.cpp:1776
#⁠15 0x00007fb4bf35d9a2 in process_packet (port=0x7fb4bd611a08, sendL=0x7fb4bc1f8208, receive=0x7fb4bc1f8630, result=0x7fb4bd608e28) at ../src/remote/server.cpp:3604
#⁠16 0x00007fb4bf35f177 in loopThread () at ../src/remote/server.cpp:5289
#⁠17 0x00007fb4bf011e50 in run (arg=0x7fb4a37c66c8) at ../src/jrd/ThreadStart.cpp:128
#⁠18 (anonymous namespace)::threadStart (arg=0x7fb4a37c66c8) at ../src/jrd/ThreadStart.cpp:139
#⁠19 0x00007fb4bdfd9aa1 in start_thread () from /lib64/libpthread.so.0
#⁠20 0x00007fb4bdd26bcd in clone () from /lib64/libc.so.6

Commits: 860f179 8ff0571 3f241d6

====== Test Details ======

After discussion with hvlad (letter 19.12.2017 15:18) - it seems that (unfortunately) test can not be implemented.