Winboard Forum

by **Miguel A. Ballicora** » 02 Mar 2009, 15:54

Is this problem due to Xboard?

I got a crash with this message on the terminal (see below this message):
I am using Ubuntu 8.10. Unfortunately, I was not saving xboard debug files. :-(

I was running series of two-game matches (-mg 2) between two engines in a loop, calling xboard from a ruby script.
I have used this script with xboard more than 10000 times.

Miguel

Code: Select all: *** buffer overflow detected ***: /home/miguel/cc/xboard15/xboard terminated ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x48)[0xb7c686d8] /lib/tls/i686/cmov/libc.so.6[0xb7c66800] /lib/tls/i686/cmov/libc.so.6[0xb7c65ef8] /lib/tls/i686/cmov/libc.so.6(_IO_default_xsputn+0xc8)[0xb7bdba78] /lib/tls/i686/cmov/libc.so.6(_IO_vfprintf+0x371b)[0xb7bb10db] /lib/tls/i686/cmov/libc.so.6(__vsprintf_chk+0xa4)[0xb7c65fa4] /lib/tls/i686/cmov/libc.so.6(__sprintf_chk+0x2d)[0xb7c65eed] /home/miguel/cc/xboard15/xboard[0x805038e] /home/miguel/cc/xboard15/xboard[0x8062309] /home/miguel/cc/xboard15/xboard[0x8075647] /home/miguel/cc/xboard15/xboard[0x80760a9] /home/miguel/cc/xboard15/xboard[0x804fcf9] /usr/lib/libXt.so.6[0xb7e4aec6] /usr/lib/libXt.so.6(XtAppNextEvent+0xb2)[0xb7e4b0e2] /usr/lib/libXt.so.6(XtAppMainLoop+0x44)[0xb7e3dea4] /home/miguel/cc/xboard15/xboard[0x805bf77] /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5)[0xb7b84685] /home/miguel/cc/xboard15/xboard[0x804b791] ======= Memory map: ======== 08048000-08149000 r-xp 00000000 08:06 4565300 /home/miguel/cc/xboard15/xboard 08149000-0814a000 r--p 00101000 08:06 4565300 /home/miguel/cc/xboard15/xboard 0814a000-08181000 rw-p 00102000 08:06 4565300 /home/miguel/cc/xboard15/xboard 08181000-082c6000 rw-p 08181000 00:00 0 0833f000-083a2000 rw-p 0833f000 00:00 0 [heap] b7b10000-b7b1d000 r-xp 00000000 08:06 1695765 /lib/libgcc_s.so.1 b7b1d000-b7b1e000 r--p 0000c000 08:06 1695765 /lib/libgcc_s.so.1 b7b1e000-b7b1f000 rw-p 0000d000 08:06 1695765 /lib/libgcc_s.so.1 b7b2c000-b7b30000 r-xp 00000000 08:06 4860 /usr/lib/libXfixes.so.3.1.0 b7b30000-b7b31000 rw-p 00003000 08:06 4860 /usr/lib/libXfixes.so.3.1.0 b7b31000-b7b39000 r-xp 00000000 08:06 4880 /usr/lib/libXrender.so.1.3.0 b7b39000-b7b3a000 r--p 00007000 08:06 4880 /usr/lib/libXrender.so.1.3.0 b7b3a000-b7b3b000 rw-p 00008000 08:06 4880 /usr/lib/libXrender.so.1.3.0 b7b3b000-b7b43000 r-xp 00000000 08:06 4850 /usr/lib/libXcursor.so.1.0.2 b7b43000-b7b44000 rw-p 00007000 08:06 4850 /usr/lib/libXcursor.so.1.0.2 b7b44000-b7b45000 rw-p b7b44000 00:00 0 b7b45000-b7b49000 r-xp 00000000 08:06 4854 /usr/lib/libXdmcp.so.6.0.0 b7b49000-b7b4a000 rw-p 00003000 08:06 4854 /usr/lib/libXdmcp.so.6.0.0 b7b4a000-b7b4b000 rw-p b7b4a000 00:00 0 b7b4b000-b7b4d000 r-xp 00000000 08:06 1712963 /lib/tls/i686/cmov/libdl-2.8.90.so b7b4d000-b7b4e000 r--p 00001000 08:06 1712963 /lib/tls/i686/cmov/libdl-2.8.90.so b7b4e000-b7b4f000 rw-p 00002000 08:06 1712963 /lib/tls/i686/cmov/libdl-2.8.90.so b7b4f000-b7b66000 r-xp 00000000 08:06 5784 /usr/lib/libxcb.so.1.0.0 b7b66000-b7b67000 r--p 00016000 08:06 5784 /usr/lib/libxcb.so.1.0.0 b7b67000-b7b68000 rw-p 00017000 08:06 5784 /usr/lib/libxcb.so.1.0.0 b7b68000-b7b69000 r-xp 00000000 08:06 5782 /usr/lib/libxcb-xlib.so.0.0.0 b7b69000-b7b6a000 r--p 00000000 08:06 5782 /usr/lib/libxcb-xlib.so.0.0.0 b7b6a000-b7b6b000 rw-p 00001000 08:06 5782 /usr/lib/libxcb-xlib.so.0.0.0 b7b6b000-b7b6d000 r-xp 00000000 08:06 4843 /usr/lib/libXau.so.6.0.0 b7b6d000-b7b6e000 rw-p 00001000 08:06 4843 /usr/lib/libXau.so.6.0.0 b7b6e000-b7cc6000 r-xp 00000000 08:06 1712960 /lib/tls/i686/cmov/libc-2.8.90.so b7cc6000-b7cc8000 r--p 00158000 08:06 1712960 /lib/tls/i686/cmov/libc-2.8.90.so b7cc8000-b7cc9000 rw-p 0015a000 08:06 1712960 /lib/tls/i686/cmov/libc-2.8.90.so b7cc9000-b7ccd000 rw-p b7cc9000 00:00 0 b7ccd000-b7cf1000 r-xp 00000000 08:06 1712964 /lib/tls/i686/cmov/libm-2.8.90.so b7cf1000-b7cf2000 r--p 00023000 08:06 1712964 /lib/tls/i686/cmov/libm-2.8.90.so b7cf2000-b7cf3000 rw-p 00024000 08:06 1712964 /lib/tls/i686/cmov/libm-2.8.90.so b7cf3000-b7dde000 r-xp 00000000 08:06 4027 /usr/lib/libX11.so.6.2.0 b7dde000-b7ddf000 r--p 000ea000 08:06 4027 /usr/lib/libX11.so.6.2.0 b7ddf000-b7de1000 rw-p 000eb000 08:06 4027 /usr/lib/libX11.so.6.2.0 b7de1000-b7de2000 rw-p b7de1000 00:00 0 b7de2000-b7df7000 r-xp 00000000 08:06 4802 /usr/lib/libICE.so.6.3.0 b7df7000-b7df8000 rw[1]+ Done gedit gauntlet-replay.rb

by **H.G.Muller** » 02 Mar 2009, 17:01

XBoard is not written in a safe way w.r.t. buffer overflow. So if the engines send it long-enough messages, it can indeed crash XBoard. What engines were you running?

by **Miguel A. Ballicora** » 02 Mar 2009, 17:47

H.G.Muller wrote:XBoard is not written in a safe way w.r.t. buffer overflow. So if the engines send it long-enough messages, it can indeed crash XBoard. What engines were you running?

Gaviota and Chispa 4.0.3 at the moment of the crash.

At the end is the last part of the Gaviota's logfile. After Gaviota sent the move Kb7, it did not hear anymore from xboard. Xboard messages to gaviota are the ones with "received". For instance:

Code: Select all: move Kb7 received <-- time 2245 [time 2245 HAS BEEN SENT BY XBOARD]

I am sorry I do not have a better log.

Miguel

Code: Select all: -------------- NEW ITERATION ---------------- Signature[1]: e470c247 k7/P7/8/1N6/8/8/4K3/8 b - - 86 234 +-----------------+ | k . . . . . . . | [Black] | P . . . . . . . | | . . . . . . . . | | . N . . . . . . | Castling: | . . . . . . . . | ep: - | . . . . . . . . | | . . . . K . . . | | . . . . . . . . | +-----------------+ legal moves available = 1 --------------------------------------------- move Kb7 received <-- time 2245 Game Time: 95.539000 time --> param->rem_time: 2245 received <-- otim 303 Game Time: 95.539000 received <-- usermove Kd2 Game Time: 95.539000 Kd2 --> move received trying to stop pondering it was not pondering... -------------- NEW ITERATION ---------------- Signature[1]: 5937ade7 8/Pk6/8/1N6/8/8/3K4/8 b - - 88 236 +-----------------+ | . . . . . . . . | [Black] | P k . . . . . . | | . . . . . . . . | | . N . . . . . . | Castling: | . . . . . . . . | ep: - | . . . . . . . . | | . . . K . . . . | | . . . . . . . . | +-----------------+ legal moves available = 5 Creating thread... ********* Starts iterative deepening 10 1 0.0 -8.50 Kc6 119.a8=Q+ Kxb5 21 1 0.0 -4.53 Ka8 21 1: 0.0 -4.53 Ka8 39 2 0.0 -4.52 Ka8 119.Kd1 50 2: 0.0 -4.52 Ka8 119.Kd1 100 3 0.0 -4.51 Ka8 119.Kd1 Kb7 127 3: 0.0 -4.51 Ka8 119.Kd1 Kb7 291 4 0.0 -4.52 Ka8 119.Kd1 Kb7 120.Ke2 331 4: 0.0 -4.52 Ka8 119.Kd1 Kb7 120.Ke2 345 5 0.0 :-) Ka8 359 5 0.0 +0.00 Ka8 119.Kd1 <=TABLE 363 5: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 377 6 0.0 +0.00 Ka8 119.Kd1 <=TABLE 381 6: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 395 7 0.0 +0.00 Ka8 119.Kd1 <=TABLE 399 7: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 413 8 0.0 +0.00 Ka8 119.Kd1 <=TABLE 417 8: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 431 9 0.0 +0.00 Ka8 119.Kd1 <=TABLE 435 9: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 449 10 0.0 +0.00 Ka8 119.Kd1 <=TABLE 453 10: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 467 11 0.0 +0.00 Ka8 119.Kd1 <=TABLE 471 11: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 485 12 0.0 +0.00 Ka8 119.Kd1 <=TABLE 489 12: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 503 13 0.0 +0.00 Ka8 119.Kd1 <=TABLE 507 13: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 521 14 0.0 +0.00 Ka8 119.Kd1 <=TABLE 525 14: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 539 15 0.0 +0.00 Ka8 119.Kd1 <=TABLE 543 15: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 557 16 0.0 +0.00 Ka8 119.Kd1 <=TABLE 561 16: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 575 17 0.0 +0.00 Ka8 119.Kd1 <=TABLE 579 17: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 593 18 0.0 +0.00 Ka8 119.Kd1 <=TABLE 597 18: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 611 19 0.0 +0.00 Ka8 119.Kd1 <=TABLE 615 19: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 629 20 0.0 +0.00 Ka8 119.Kd1 <=TABLE 633 20: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 647 21 0.0 +0.00 Ka8 119.Kd1 <=TABLE 651 21: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 665 22 0.0 +0.00 Ka8 119.Kd1 <=TABLE 669 22: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 683 23 0.0 +0.00 Ka8 119.Kd1 <=TABLE 687 23: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 701 24 0.0 +0.00 Ka8 119.Kd1 <=TABLE 705 24: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 719 25 0.0 +0.00 Ka8 119.Kd1 <=TABLE 723 25: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 737 26 0.0 +0.00 Ka8 119.Kd1 <=TABLE 741 26: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 755 27 0.0 +0.00 Ka8 119.Kd1 <=TABLE 759 27: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 773 28 0.0 +0.00 Ka8 119.Kd1 <=TABLE 777 28: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 791 29 0.0 +0.00 Ka8 119.Kd1 <=TABLE 795 29: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 809 30 0.0 +0.00 Ka8 119.Kd1 <=TABLE 813 30: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 827 31 0.0 +0.00 Ka8 119.Kd1 <=TABLE 831 31: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 845 32 0.0 +0.00 Ka8 119.Kd1 <=TABLE 849 32: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 863 33 0.0 +0.00 Ka8 119.Kd1 <=TABLE 867 33: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 881 34 0.0 +0.00 Ka8 119.Kd1 <=TABLE 885 34: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 899 35 0.0 +0.00 Ka8 119.Kd1 <=TABLE 903 35: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 917 36 0.0 +0.00 Ka8 119.Kd1 <=TABLE 921 36: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 935 37 0.0 +0.00 Ka8 119.Kd1 <=TABLE 939 37: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 953 38 0.0 +0.00 Ka8 119.Kd1 <=TABLE 957 38: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 971 39 0.0 +0.00 Ka8 119.Kd1 <=TABLE 975 39: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 989 40 0.0 +0.00 Ka8 119.Kd1 <=TABLE 993 40: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1007 41 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1011 41: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1025 42 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1029 42: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1043 43 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1047 43: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1061 44 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1065 44: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1079 45 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1083 45: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1097 46 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1101 46: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1115 47 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1119 47: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1133 48 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1137 48: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1151 49 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1155 49: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1169 50 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1173 50: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1187 51 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1191 51: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1205 52 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1209 52: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1223 53 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1227 53: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1241 54 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1245 54: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1259 55 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1263 55: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1277 56 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1281 56: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1295 57 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1299 57: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1313 58 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1317 58: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1331 59 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1335 59: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1349 60 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1353 60: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1367 61 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1371 61: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1385 62 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1389 62: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1403 63 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1407 63: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1421 64 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1425 64: 0.0 +0.00 Ka8 119.Kd1 <=TABLE Game Time: 95.554000 Ply: 64 Kb7-a8 Kd2-d1 <-tableb Score: 0.00 (0) Evals: 197 Time: 0.0s nps: 95000 Q/all: 0.04 ------------------------------------------------------------------- nodes cutoffs missed tree_exp ------------------------------------------------------------------- path 1374 53 0 1.00 quies 51 21 2 1.10 all 1425 74 2 1.03 ------------------------------------------------------------------- hashtable= attempts: 1132 hits: 90.3% perfect: 71.6% GTB CACHE STATS probes: 9593 efficiency: 95.2% average searches 26.6 occupancy: 8.4% --------------------------------------------- move Ka8 received <-- time 2243 Game Time: 95.609000 time --> param->rem_time: 2243 received <-- otim 298 Game Time: 95.609000 received <-- usermove Kc2 Game Time: 95.609000 Kc2 --> move received trying to stop pondering it was not pondering... -------------- NEW ITERATION ---------------- Signature[1]: 7cc202 k7/P7/8/1N6/8/8/2K5/8 b - - 90 238 +-----------------+ | k . . . . . . . | [Black] | P . . . . . . . | | . . . . . . . . | | . N . . . . . . | Castling: | . . . . . . . . | ep: - | . . . . . . . . | | . . K . . . . . | | . . . . . . . . | +-----------------+ legal moves available = 1 --------------------------------------------- move Kb7-------------- NEW ITERATION ---------------- Signature[1]: e470c247 k7/P7/8/1N6/8/8/4K3/8 b - - 86 234 +-----------------+ | k . . . . . . . | [Black] | P . . . . . . . | | . . . . . . . . | | . N . . . . . . | Castling: | . . . . . . . . | ep: - | . . . . . . . . | | . . . . K . . . | | . . . . . . . . | +-----------------+ legal moves available = 1 --------------------------------------------- move Kb7 received <-- time 2245 Game Time: 95.539000 time --> param->rem_time: 2245 received <-- otim 303 Game Time: 95.539000 received <-- usermove Kd2 Game Time: 95.539000 Kd2 --> move received trying to stop pondering it was not pondering... -------------- NEW ITERATION ---------------- Signature[1]: 5937ade7 8/Pk6/8/1N6/8/8/3K4/8 b - - 88 236 +-----------------+ | . . . . . . . . | [Black] | P k . . . . . . | | . . . . . . . . | | . N . . . . . . | Castling: | . . . . . . . . | ep: - | . . . . . . . . | | . . . K . . . . | | . . . . . . . . | +-----------------+ legal moves available = 5 Creating thread... ********* Starts iterative deepening 10 1 0.0 -8.50 Kc6 119.a8=Q+ Kxb5 21 1 0.0 -4.53 Ka8 21 1: 0.0 -4.53 Ka8 39 2 0.0 -4.52 Ka8 119.Kd1 50 2: 0.0 -4.52 Ka8 119.Kd1 100 3 0.0 -4.51 Ka8 119.Kd1 Kb7 127 3: 0.0 -4.51 Ka8 119.Kd1 Kb7 291 4 0.0 -4.52 Ka8 119.Kd1 Kb7 120.Ke2 331 4: 0.0 -4.52 Ka8 119.Kd1 Kb7 120.Ke2 345 5 0.0 :-) Ka8 359 5 0.0 +0.00 Ka8 119.Kd1 <=TABLE 363 5: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 377 6 0.0 +0.00 Ka8 119.Kd1 <=TABLE 381 6: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 395 7 0.0 +0.00 Ka8 119.Kd1 <=TABLE 399 7: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 413 8 0.0 +0.00 Ka8 119.Kd1 <=TABLE 417 8: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 431 9 0.0 +0.00 Ka8 119.Kd1 <=TABLE 435 9: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 449 10 0.0 +0.00 Ka8 119.Kd1 <=TABLE 453 10: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 467 11 0.0 +0.00 Ka8 119.Kd1 <=TABLE 471 11: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 485 12 0.0 +0.00 Ka8 119.Kd1 <=TABLE 489 12: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 503 13 0.0 +0.00 Ka8 119.Kd1 <=TABLE 507 13: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 521 14 0.0 +0.00 Ka8 119.Kd1 <=TABLE 525 14: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 539 15 0.0 +0.00 Ka8 119.Kd1 <=TABLE 543 15: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 557 16 0.0 +0.00 Ka8 119.Kd1 <=TABLE 561 16: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 575 17 0.0 +0.00 Ka8 119.Kd1 <=TABLE 579 17: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 593 18 0.0 +0.00 Ka8 119.Kd1 <=TABLE 597 18: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 611 19 0.0 +0.00 Ka8 119.Kd1 <=TABLE 615 19: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 629 20 0.0 +0.00 Ka8 119.Kd1 <=TABLE 633 20: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 647 21 0.0 +0.00 Ka8 119.Kd1 <=TABLE 651 21: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 665 22 0.0 +0.00 Ka8 119.Kd1 <=TABLE 669 22: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 683 23 0.0 +0.00 Ka8 119.Kd1 <=TABLE 687 23: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 701 24 0.0 +0.00 Ka8 119.Kd1 <=TABLE 705 24: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 719 25 0.0 +0.00 Ka8 119.Kd1 <=TABLE 723 25: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 737 26 0.0 +0.00 Ka8 119.Kd1 <=TABLE 741 26: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 755 27 0.0 +0.00 Ka8 119.Kd1 <=TABLE 759 27: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 773 28 0.0 +0.00 Ka8 119.Kd1 <=TABLE 777 28: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 791 29 0.0 +0.00 Ka8 119.Kd1 <=TABLE 795 29: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 809 30 0.0 +0.00 Ka8 119.Kd1 <=TABLE 813 30: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 827 31 0.0 +0.00 Ka8 119.Kd1 <=TABLE 831 31: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 845 32 0.0 +0.00 Ka8 119.Kd1 <=TABLE 849 32: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 863 33 0.0 +0.00 Ka8 119.Kd1 <=TABLE 867 33: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 881 34 0.0 +0.00 Ka8 119.Kd1 <=TABLE 885 34: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 899 35 0.0 +0.00 Ka8 119.Kd1 <=TABLE 903 35: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 917 36 0.0 +0.00 Ka8 119.Kd1 <=TABLE 921 36: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 935 37 0.0 +0.00 Ka8 119.Kd1 <=TABLE 939 37: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 953 38 0.0 +0.00 Ka8 119.Kd1 <=TABLE 957 38: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 971 39 0.0 +0.00 Ka8 119.Kd1 <=TABLE 975 39: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 989 40 0.0 +0.00 Ka8 119.Kd1 <=TABLE 993 40: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1007 41 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1011 41: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1025 42 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1029 42: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1043 43 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1047 43: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1061 44 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1065 44: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1079 45 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1083 45: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1097 46 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1101 46: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1115 47 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1119 47: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1133 48 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1137 48: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1151 49 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1155 49: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1169 50 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1173 50: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1187 51 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1191 51: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1205 52 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1209 52: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1223 53 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1227 53: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1241 54 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1245 54: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1259 55 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1263 55: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1277 56 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1281 56: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1295 57 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1299 57: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1313 58 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1317 58: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1331 59 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1335 59: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1349 60 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1353 60: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1367 61 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1371 61: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1385 62 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1389 62: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1403 63 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1407 63: 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1421 64 0.0 +0.00 Ka8 119.Kd1 <=TABLE 1425 64: 0.0 +0.00 Ka8 119.Kd1 <=TABLE Game Time: 95.554000 Ply: 64 Kb7-a8 Kd2-d1 <-tableb Score: 0.00 (0) Evals: 197 Time: 0.0s nps: 95000 Q/all: 0.04 ------------------------------------------------------------------- nodes cutoffs missed tree_exp ------------------------------------------------------------------- path 1374 53 0 1.00 quies 51 21 2 1.10 all 1425 74 2 1.03 ------------------------------------------------------------------- hashtable= attempts: 1132 hits: 90.3% perfect: 71.6% GTB CACHE STATS probes: 9593 efficiency: 95.2% average searches 26.6 occupancy: 8.4% --------------------------------------------- move Ka8 received <-- time 2243 Game Time: 95.609000 time --> param->rem_time: 2243 received <-- otim 298 Game Time: 95.609000 received <-- usermove Kc2 Game Time: 95.609000 Kc2 --> move received trying to stop pondering it was not pondering... -------------- NEW ITERATION ---------------- Signature[1]: 7cc202 k7/P7/8/1N6/8/8/2K5/8 b - - 90 238 +-----------------+ | k . . . . . . . | [Black] | P . . . . . . . | | . . . . . . . . | | . N . . . . . . | Castling: | . . . . . . . . | ep: - | . . . . . . . . | | . . K . . . . . | | . . . . . . . . | +-----------------+ legal moves available = 1 --------------------------------------------- move Kb7

by **H.G.Muller** » 03 Mar 2009, 09:30

From the stack dump it seems that you crash somewhere in the libc.so.6 library, while working on an sprintf call. It is most likely related to the trouble you report in the other thread. What makes it harder to figure out is that in the calling of XBoard routines the stack dump reports them by memory address, rather than routine name. So I have no idea what it is actually doing at the moment of the crash (and thus where to look for the offending sprintf).

I am not too experienced in Linux. Could this be a consequence of the symbol table being stripped off the executable during the final linking? If so, it would be helpful if we could somehow link without this happening (e.g. by hand, typing "gcc *.o -o xboard"), and provoke the error again.

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buffer overflow detected

buffer overflow detected

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Re: buffer overflow detected

Re: buffer overflow detected

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