[16899] in Athena Bugs
discuss core
daemon@ATHENA.MIT.EDU (John Hawkinson)
Wed Jun 16 15:07:00 1999
Date: Wed, 16 Jun 1999 15:07:29 -0400 (EDT)
Message-Id: <199906161907.PAA14390@jhawk-foo.bbnplanet.com>
To: bugs@MIT.EDU
From: John Hawkinson <jhawk@MIT.EDU>
I ^C'd an 'ls' in discuss on cvp (8.3.4) and got:
^Cdiscuss (list): Interrupted system call Can't read transaction info
discuss: q
Segmentation fault (core dumped)
contents-vnder-pressvre!jhawk] /var/tmp> gdb discuss core.jhawk
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This GDB was configured as "sparc-sun-solaris2.6"...
Core was generated by `discuss ipb-ec'.
Program terminated with signal 11, Segmentation Fault.
Reading symbols from /usr/lib/libsocket.so.1...done.
Reading symbols from /usr/lib/libnsl.so.1...done.
Reading symbols from /usr/lib/libc.so.1...done.
Reading symbols from /usr/lib/libdl.so.1...done.
Reading symbols from /usr/lib/libmp.so.2...done.
Reading symbols from /usr/lib/nss_files.so.1...done.
Reading symbols from /usr/lib/nss_dns.so.1...done.
Reading symbols from /usr/lib/libresolv.so.2...done.
#0 0xef6a3374 in realfree () from /usr/lib/libc.so.1
(gdb) where
#0 0xef6a3374 in realfree () from /usr/lib/libc.so.1
#1 0xef6a3bcc in cleanfree () from /usr/lib/libc.so.1
#2 0xef6a2e28 in _malloc_unlocked () from /usr/lib/libc.so.1
#3 0xef6a2d30 in malloc () from /usr/lib/libc.so.1
#4 0x2e9f0 in ds (s=0x93d98 "/mit/jhawk/.meetings") at dsname.c:73
#5 0x2d5fc in setdbent (user_id=0x998b0 "jhawk@ATHENA.MIT.EDU")
at dsname.c:260
#6 0x2e20c in dsc_update_mtg_set (user_id=0x998b0 "jhawk@ATHENA.MIT.EDU",
set=0x8e348, num=1, result=0xeffff57c) at dsname.c:532
#7 0x281bc in leave_mtg () at goto.c:247
#8 0x1fd08 in main (argc=0, argv=0xeffff68c) at discuss.c:204
(gdb) shell attach source
attach: /afs/dev.mit.edu/source/src-current attached to /mit/source for filesystem source
(gdb) shell look dsname.c /mit/source/FILES.look
dsname.c ./athena/bin/discuss/libds/dsname.c
(gdb) dir /mit/source/athena/bin/discuss/libds
Source directories searched: /mit/source/athena/bin/discuss/libds:$cdir:$cwd
(gdb) shell look discuss.c /mit/source/FILES.look
discuss.c ./athena/bin/discuss/client/discuss.c
(gdb) dir /mit/source/athena/bin/discuss/client
Source directories searched: /mit/source/athena/bin/discuss/client:/mit/source/athena/bin/discuss/libds:$cdir:$cwd
(gdb)
(gdb) frame 4
#4 0x2e9f0 in ds (s=0x93d98 "/mit/jhawk/.meetings") at dsname.c:73
73 register char *ns = malloc (len);
(gdb) list
68
69 INLINE static char * ds(s)
70 const char *s;
71 {
72 register int len = strlen (s) + 1;
73 register char *ns = malloc (len);
74 memcpy (ns, s, len);
75 return (ns);
76 }
77
Memory corruption?
--jhawk
