【 在 atppp (Big Mouse) 的大作中提到: 】
: 你前面说断线的地方gdb信息一样？能不能进一步调试看看？
: 是不是frame 3里面currboard指针有问题？
掉线前后输入bt的显示的信息是一样的
# gdb /export/home0/bbs/bin/bbsd
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This GDB was configured as "i386-pc-solaris2.9"...
(gdb) attach 19671
Attaching to program `/export/home0/bbs/bin/bbsd', process 19671
Reading symbols from /usr/lib/libnsl.so.1...done.
Loaded symbols for /usr/lib/libnsl.so.1
Reading symbols from /usr/lib/libsocket.so.1...done.
Loaded symbols for /usr/lib/libsocket.so.1
Reading symbols from /usr/local/lib/libz.so.1...done.
Loaded symbols for /usr/local/lib/libz.so.1
Reading symbols from /usr/lib/libpthread.so.1...done.
Loaded symbols for /usr/lib/libpthread.so.1
Reading symbols from /usr/local/lib/libltdl.so.3...done.
Loaded symbols for /usr/local/lib/libltdl.so.3
Reading symbols from /usr/lib/libdl.so.1...done.
Loaded symbols for /usr/lib/libdl.so.1
Reading symbols from /usr/lib/libc.so.1...done.
Loaded symbols for /usr/lib/libc.so.1
Reading symbols from /usr/lib/libmp.so.2...done.
Loaded symbols for /usr/lib/libmp.so.2
Reading symbols from /usr/local/lib/libgcc_s.so.1...done.
Loaded symbols for /usr/local/lib/libgcc_s.so.1
Reading symbols from /usr/lib/libthread.so.1...done.
Loaded symbols for /usr/lib/libthread.so.1
sol-thread active.
Retry #1:
Retry #2:
Retry #3:
Retry #4:
[New LWP 1 ]
[New Thread 1 (LWP 1)]
Symbols already loaded for /usr/lib/libnsl.so.1
Symbols already loaded for /usr/lib/libsocket.so.1
Symbols already loaded for /usr/local/lib/libz.so.1
Symbols already loaded for /usr/lib/libpthread.so.1
Symbols already loaded for /usr/local/lib/libltdl.so.3
Symbols already loaded for /usr/lib/libdl.so.1
Symbols already loaded for /usr/lib/libc.so.1
Symbols already loaded for /usr/lib/libmp.so.2
Symbols already loaded for /usr/local/lib/libgcc_s.so.1
Symbols already loaded for /usr/lib/libthread.so.1
[Switching to Thread 1 (LWP 1)]
0xd118d26d in _poll () from /usr/lib/libc.so.1
掉线前输入bt时的信息：
(gdb) bt
#0 0xd118d26d in _poll () from /usr/lib/libc.so.1
#1 0xd11a9674 in _select () from /usr/lib/libc.so.1
#2 0xd10dda92 in select () from /usr/lib/libthread.so.1
#3 0x080cd381 in igetch () at newio.c:454
#4 0x080cda30 in igetkey () at newio.c:638
#5 0x080880a2 in domenu (menu_name=0xd10a20df "M_ADMIN") at comm_lists.c:605
#6 0x080883bf in domenu (menu_name=0x810ef08 "TOPMENU") at comm_lists.c:651
#7 0x080cbe41 in main_bbs (convit=0, argv=0x8047eac "bbsd:linton")
at newmain_single.c:1141
#8 0x080c4be9 in bbs_main (argv=0x8047eac "bbsd:linton") at bbsd_single.c:771
#9 0x080c4db0 in bbs_standalone_main (argv=0x8047eac "bbsd:linton")
at bbsd_single.c:914
#10 0x080c4eec in main (argc=3, argv=0x8047dd4) at bbsd_single.c:1009
(gdb) l
1009 return (*handlers[mode])(argv[0]);
1010
1011
1012 /*
1013 whee = gethostbyaddr((char*)&sin.sin_addr.s_addr,sizeof(struct in_addr),AF_INET);
1014 if ((whee)&&(whee->h_name[0]))
1015 strncpy(hid, whee->h_name, 17) ;
1016 else
1017 KCN temp change it for trace IP!! don't remove. 2000.8.19 */
1018 }
(gdb) c
Continuing.
Program received signal SIGSEGV, Segmentation fault.
0xd117f6f4 in strlen () from /usr/lib/libc.so.1
掉线后输入bt时的信息：
(gdb) bt
#0 0xd117f6f4 in strlen () from /usr/lib/libc.so.1
#1 0xd11b8640 in _doprnt () from /usr/lib/libc.so.1
#2 0xd11bb278 in sprintf () from /usr/lib/libc.so.1
#3 0x080cc393 in showtitle (title=0xd10a38f8 "系统维护选单",
mid=0x8047880 "KBS测试站") at newmain_single.c:1275
#4 0x080cc75e in docmdtitle (title=0xd10a38f8 "系统维护选单",
prompt=0x81014fd "目前选择：") at newmain_single.c:1392
#5 0x08087a30 in domenu_screen (dopm=0xd10a0f28,
cmdprompt=0x81014fd "目前选择：") at comm_lists.c:469
#6 0x080883de in domenu (menu_name=0xd10a20df "M_ADMIN") at comm_lists.c:655
#7 0x080883bf in domenu (menu_name=0x810ef08 "TOPMENU") at comm_lists.c:651
#8 0x080cbe41 in main_bbs (convit=0, argv=0x8047eac "bbsd:linton")
at newmain_single.c:1141
#9 0x080c4be9 in bbs_main (argv=0x8047eac "bbsd:linton") at bbsd_single.c:771
#10 0x080c4db0 in bbs_standalone_main (argv=0x8047eac "bbsd:linton")
at bbsd_single.c:914
#11 0x080c4eec in main (argc=3, argv=0x8047dd4) at bbsd_single.c:1009
(gdb) list
1009 return (*handlers[mode])(argv[0]);
1010
1011
1012 /*
1013 whee = gethostbyaddr((char*)&sin.sin_addr.s_addr,sizeof(struct in_addr),AF_INET);
1014 if ((whee)&&(whee->h_name[0]))
1015 strncpy(hid, whee->h_name, 17) ;
1016 else
1017 KCN temp change it for trace IP!! don't remove. 2000.8.19 */
1018 }
(gdb) n
Single stepping until exit from function strlen,
which has no line number information.
warning: rw_common (): unable to read at addr 0xd10f6500
warning: rw_common (): unable to read at addr 0xd10f6500
thread_to_lwp: td_ta_map_id2thr Debugger service failed
--
FROM 202.193.15.*