Re: BUG #5121: Segmentation Fault when using pam w/ krb5 - Mailing list pgsql-bugs

Both actually...=20=20

When just the "return" is commented out the routine goes into a loop and
the following shows up in the logs...

<rdouglas@tacacs 10.0.20.38(47254) 2009-10-16 01:12:18.935 EDT>LOG:
could not receive data from client: Connection reset by peer
<rdouglas@tacacs 10.0.20.38(47254) 2009-10-16 01:12:18.935 EDT>LOG:
could not receive data from client: Connection reset by peer
<rdouglas@tacacs 10.0.20.38(47254) 2009-10-16 01:12:18.935 EDT>LOG:
could not receive data from client: Connection reset by peer
<rdouglas@tacacs 10.0.20.38(47254) 2009-10-16 01:12:18.935 EDT>LOG:
could not receive data from client: Connection reset by peer

When just "ereport" is commented out I still get a sigfault...=20

<[unknown]@[unknown]  2009-10-16 01:13:49.211 EDT>LOG:  connection
received: host=3D10.0.20.38 port=3D32815
<@  2009-10-16 01:13:49.258 EDT>LOG:  server process (PID 13201) was
terminated by signal 11: Segmentation fault
<@  2009-10-16 01:13:49.258 EDT>LOG:  terminating any other active
server processes
<@  2009-10-16 01:13:49.262 EDT>LOG:  all server processes terminated;
reinitializing
<@  2009-10-16 01:13:49.381 EDT>LOG:  database system was interrupted;
last known up at 2009-10-16 01:13:37 EDT
<@  2009-10-16 01:13:49.382 EDT>LOG:  database system was not properly
shut down; automatic recovery in progress
<@  2009-10-16 01:13:49.382 EDT>LOG:  record with zero length at
3/B7D75538
<@  2009-10-16 01:13:49.383 EDT>LOG:  redo is not required
<@  2009-10-16 01:13:49.409 EDT>LOG:  autovacuum launcher started
<@  2009-10-16 01:13:49.410 EDT>LOG:  database system is ready to accept
connections


But when both are commented it seems to work...

<[unknown]@[unknown]  2009-10-16 01:15:05.330 EDT>LOG:  connection
received: host=3D10.0.20.38 port=3D32816
<[unknown]@[unknown]  2009-10-16 01:15:17.436 EDT>LOG:  connection
received: host=3D10.0.20.38 port=3D32817
<rdouglas@tacacs 10.0.20.38(32817) 2009-10-16 01:15:17.486 EDT>LOG:
connection authorized: user=3Drdouglas database=3Dtacacs


-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]=20
Sent: Friday, October 16, 2009 1:01 AM
To: Douglas, Ryan
Subject: Re: [BUGS] BUG #5121: Segmentation Fault when using pam w/ krb5


"Douglas, Ryan" <RDouglas@arbinet.com> writes:
> Ok... I compiled 8.2.14 and 8.3.8 with the same configure options.
They
> both segfaut when doing the authentication. Note that when I use -W
> option with psql everything works ok.  I went back to 8.4.1 enabled
the
> max debug level then re-tested and got the info below in the log. I
went
> to line 769 in pqcomm.c and commented the ereport and return EOF lines
> and recompiled.  Now when I connect it works without a segfault. Hope
> this narrows things down.

Which is it that makes the difference ... the ereport or the return?

            regards, tom lane