[Firebird-devel] Crash at fbtcs SQL_EVENT_02 with 2.5 branch

[Adriano d. S. F. <adr...@gm...>]

Hi!

I got a crash running this test against current 2.5 branch in
super-classic mode. I can't reproduce it anymore.

Here is what I got. "xdrs" points to freed memory.

------------
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff28cc700 (LWP 5640)]
0x000000000042960d in inet_putbytes (xdrs=0x7ffff7fc4e08,
buff=0x7ffff28cb94c "", count=4) at ../src/remote/inet.cpp:2798
2798			*xdrs->x_private++ = *buff++;
(gdb) bt
#0  0x000000000042960d in inet_putbytes (xdrs=0x7ffff7fc4e08,
buff=0x7ffff28cb94c "", count=4) at ../src/remote/inet.cpp:2798
#1  0x0000000000429679 in inet_putlong (xdrs=0x7ffff7fc4e08,
lp=0x7ffff28cb97c) at ../src/remote/inet.cpp:2818
#2  0x00000000004343e2 in xdr_enum (xdrs=0x7ffff7fc4e08,
ip=0x7ffff7fc4290) at ../src/remote/xdr.cpp:337
#3  0x000000000042cff9 in xdr_protocol (xdrs=0x7ffff7fc4e08,
p=0x7ffff7fc4290) at ../src/remote/protocol.cpp:271
#4  0x0000000000428e08 in send_full (port=0x7ffff7fc4ce8,
packet=0x7ffff7fc4290) at ../src/remote/inet.cpp:2438
#5  0x0000000000432c68 in rem_port::send (this=0x7ffff7fc4ce8,
pckt=0x7ffff7fc4290) at ../src/remote/remote.cpp:661
#6  0x000000000040b195 in rem_port::disconnect (this=0x7ffff7fc3790,
sendL=0x7ffff7fc3a18, receiveL=0x7ffff7fc3e28) at
../src/remote/server.cpp:1676
#7  0x000000000040ee36 in process_packet (port=0x7ffff7fc3790,
sendL=0x7ffff7fc3a18, receive=0x7ffff7fc3e28, result=0x7ffff28cbdc0) at
../src/remote/server.cpp:3357
#8  0x0000000000412157 in loopThread () at ../src/remote/server.cpp:5212
#9  0x00007ffff725e60c in (anonymous namespace)::ThreadArgs::run
(this=0x7ffff28cbe50) at ../src/jrd/ThreadStart.cpp:128
#10 0x00007ffff725e68d in (anonymous namespace)::threadStart
(arg=0x7ffff7f70e80) at ../src/jrd/ThreadStart.cpp:139
#11 0x00007ffff6da4d8c in start_thread () from
/lib/x86_64-linux-gnu/libpthread.so.0
#12 0x00007ffff610b04d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#13 0x0000000000000000 in ?? ()
(gdb) print buff
$1 = (const SCHAR *) 0x7ffff28cb94c ""
(gdb) print xdrs
$2 = (XDR *) 0x7ffff7fc4e08
(gdb) print *xdrs
$3 = {x_op = 3735928559, x_ops = 0xdeadbeefdeadbeef, x_public =
0xdeadbeefdeadbeef <Address 0xdeadbeefdeadbeef out of bounds>, x_private
= 0xdeadbeefdeadbeef <Address 0xdeadbeefdeadbeef out of bounds>,
  x_base = 0xdeadbeefdeadbeef <Address 0xdeadbeefdeadbeef out of
bounds>, x_handy = 8191}
------------


Adriano