[Dovecot] Internal login failure

[Jaeson Schultz]

[root at co-nundrum root]# gdb /usr/local/libexec/dovecot/dovecot-auth 26340
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Copyright 2004 Free Software Foundation, Inc.
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There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as
"i386-redhat-linux-gnu".../usr/local/libexec/dovecot/dovecot-auth: No such
file or directory.

Attaching to process 26340
Reading symbols from /usr/libexec/dovecot/dovecot-auth...done.
Using host libthread_db library "/lib/tls/libthread_db.so.1".
Reading symbols from /lib/libcrypt.so.1...done.
Loaded symbols for /lib/libcrypt.so.1
Reading symbols from /lib/libcrypto.so.4...done.
Loaded symbols for /lib/libcrypto.so.4
Reading symbols from /lib/libpam.so.0...done.
Loaded symbols for /lib/libpam.so.0
Reading symbols from /usr/lib/libpq.so.3...done.
Loaded symbols for /usr/lib/libpq.so.3
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/tls/libc.so.6...done.
Loaded symbols for /lib/tls/libc.so.6
Reading symbols from /usr/lib/libgssapi_krb5.so.2...done.
Loaded symbols for /usr/lib/libgssapi_krb5.so.2
Reading symbols from /usr/lib/libkrb5.so.3...done.
Loaded symbols for /usr/lib/libkrb5.so.3
Reading symbols from /lib/libcom_err.so.2...done.
Loaded symbols for /lib/libcom_err.so.2
Reading symbols from /usr/lib/libk5crypto.so.3...done.
Loaded symbols for /usr/lib/libk5crypto.so.3
Reading symbols from /lib/libresolv.so.2...done.
Loaded symbols for /lib/libresolv.so.2
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /lib/libssl.so.4...done.
Loaded symbols for /lib/libssl.so.4
Reading symbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/tls/libpthread.so.0...done.
[Thread debugging using libthread_db enabled]
[New Thread -151047520 (LWP 26340)]
Loaded symbols for /lib/tls/libpthread.so.0
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
0x00a4f7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
(gdb) cont
Continuing.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -151047520 (LWP 26340)]
0x00ac93d4 in _int_free () from /lib/tls/libc.so.6
(gdb) bt full
#0  0x00ac93d4 in _int_free () from /lib/tls/libc.so.6
No symbol table info available.
#1  0x00aca72b in free () from /lib/tls/libc.so.6
No symbol table info available.
#2  0x0805495e in i_free (mem=0x97dfe28) at imem.c:37
No locals.
#3  0x08051554 in pgsql_lookup_pass (auth_request=0x97dfc30,
pgsql_request=0xb7ffdc) at passdb-pgsql.c:117
        conn = (struct pgsql_connection *) 0x97dfe28
        query = 0x9800000 <Address 0x9800000 out of bounds>
        str = (string_t *) 0xb81760
#4  0x0804f723 in mech_plain_auth_continue (auth_request=0x97dfc30,
request=0x9800000, data=0x97dfe20 "", callback=0x9800000) at mech-plain.c:68
        authenid = 0x97d9509 "jaeson"
        pass = 0x97bb060 "secret"
        i = 131553
        count = 2
#5  0x0804f05e in mech_request_continue (conn=0x97d4e00, request=0xfeea6dc0,
data=0x97d9508 "", callback=0x804de34 <request_callback>) at mech.c:121
        auth_request = (struct auth_request *) 0x97dfc30
#6  0x0804dffe in login_input_request (conn=0x97d4e00) at
login-connection.c:138
        request = {type = AUTH_LOGIN_REQUEST_CONTINUE, id = 1, data_size =
15}
        data = (unsigned char *) 0x97d9508 ""
        size = 27
#7  0x080560cc in io_loop_handler_run (ioloop=0x97bfd40) at
ioloop-poll.c:214
        data = (struct ioloop_handler_data *) 0x97bfd60
        pollfd = (struct pollfd *) 0x97bfd98
        tv = {tv_sec = 2, tv_usec = 446220}
        io = (struct io *) 0x97d4f30
        io_p = (struct io **) 0x97cf840
        t_id = 2
        msecs = 159383552
        ret = 0
        call = 1
#8  0x08055b69 in io_loop_run (ioloop=0x97bfd40) at ioloop.c:259
No locals.
#9  0x0804e610 in main (argc=1, argv=0xfeea6ef4) at main.c:121
No locals.

-----Original Message-----
From: Timo Sirainen [mailto:tss at iki.fi] 
Sent: Monday, December 13, 2004 11:52 AM
To: Jaeson Schultz
Cc: dovecot at dovecot.org
Subject: Re: [Dovecot] Internal login failure


On 12.12.2004, at 23:08, Jaeson Schultz wrote:

>  dovecot: Dec 12 01:15:59 Error: child 9845 (auth) killed with signal
> 11

So, this is the real problem. For some reason it crashes before doing 
userdb lookup. gdb backtrace from this would be helpful. Easiest way to 
do this would be:

gdb /usr/local/libexec/dovecot/dovecot-auth `pidof dovecot-auth` cont <wait
for crash> bt full

and mail it to me.

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