Re: smtp dump core after stopping scheduler

[Lai Yiu Fai <ccyflai@ust.hk>]

Hello all,

Another incident the smtp transport agent dump core after "scheduler" stop.
Seem it called abort() somewhere in smtp.c, is it normal or intented to do 
that?

# gdb /opt/zmailer/bin/ta/smtp core
GDB is free software and you are welcome to distribute copies of it
 under certain conditions; type "show copying" to see the conditions.
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GDB 4.16 (sparc-sun-solaris2.5), 
Copyright 1996 Free Software Foundation, Inc...
Core was generated by `/opt/zmailer/bin/ta/smtp -s -l /var/log/mail/smtp'.
Program terminated with signal 6, Aborted.
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/libintl.so.1...done.
Reading symbols from /usr/lib/libmp.so.1...done.
Reading symbols from /usr/lib/libw.so.1...done.
Reading symbols from /usr/platform/SUNW,Ultra-1/lib/libc_psr.so.1...done.
Reading symbols from /usr/lib/nss_files.so.1...done.
#0  0xef5f4594 in _kill ()
(gdb) bt
#0  0xef5f4594 in _kill ()
#1  0xef5ba62c in abort ()
#2  0x1ab5c in smtpwrite (SS=0xefffd0a0, saverpt=1, 
    strbuf=0xefffc548 "MAIL From:<csclngo@ug.cs.ust.hk>", pipelining=0,
    syncrp=0x0) at smtp.c:3450
#3  0x1574c in deliver (SS=0xefffd0a0, dp=0x42f80, startrp=0x502c8, endrp=0x0)
    at smtp.c:1166
#4  0x15334 in process (SS=0xefffd0a0, dp=0x42f80, smtpstatus=0, 
    host=0x50900 "relay.net", noMX=0) at smtp.c:1002
#5  0x15044 in main (argc=-268437048, argv=0xeffff9d6) at smtp.c:938
(gdb) #

Rgds,
Ken Lai

On Sat, Dec 20, 1997 at 12:08:24PM +0800, Lai Yiu Fai wrote:
> Hello,
> 
> The problem found in 2.99.49p9 release running on Solaris 2.5.1.  The smtp
> transporter dump core after "router kill scheduler".   It is not repeatable
> but happened intermittently.
> 
> It seems NULL pointer arguments are passing to the vcsetup() in makeconn().
> 
> ====
> # gdb /opt/zmailer/bin/ta/smtp core
> GDB is free software and you are welcome to distribute copies of it
>  under certain conditions; type "show copying" to see the conditions.
> There is absolutely no warranty for GDB; type "show warranty" for details.
> GDB 4.16 (sparc-sun-solaris2.5), 
> Copyright 1996 Free Software Foundation, Inc...
> Core was generated by `/opt/zmailer/bin/ta/smtp -s -l /var/log/mail/smtp'.
> 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/libintl.so.1...done.
> Reading symbols from /usr/lib/libmp.so.1...done.
> Reading symbols from /usr/lib/libw.so.1...done.
> Reading symbols from /usr/platform/SUNW,Ultra-2/lib/libc_psr.so.1...done.
> Reading symbols from /usr/lib/nss_files.so.1...done.
> Reading symbols from /usr/lib/nss_compat.so.1...done.
> #0  0xef66056c in memcpy ()
> (gdb) bt
> #0  0xef66056c in memcpy ()
> #1  0xef5e0f9c in _doprnt ()
> #2  0xef5eb274 in sprintf ()
> #3  0x18d40 in vcsetup (SS=0x0, sa=0x0, fdp=0x0, 
>     hostname=0x3a310000 <Address 0x3a310000 out of bounds>) at smtp.c:2770
> #4  0x18588 in makeconn (SS=0xefffd0a0, ai=0x50590, ismx=-1) at smtp.c:2500
> #5  0x18108 in smtpconn (SS=0xefffd0a0, host=0x46668 "mach.psych.indiana.edu", 
>     noMX=0) at smtp.c:2315
> #6  0x17820 in smtpopen (SS=0xefffd0a0, host=0x46668 "mach.psych.indiana.edu", 
>     noMX=0) at smtp.c:2016
> #7  0x14ecc in main (argc=-268437048, argv=0xeffff9d7) at smtp.c:914
> 
> 
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