[Dovecot] backtrace from postgres dict

[Steffen Kaiser]

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Hi,

since I enabled ACLs I get following backtrace. It looks like that it 
happens if the ACLs had been changed only. Also, it looks like that it 
always happens 1 minute after last "dict: Info: pgsql(localhost): 
Connected to database dovecot", no matter if the user is logged in (and 
idle) or logged off. Postgres logs: "could not receive data from client: 
Connection reset by peer" and "unexpected EOF on client connection".

Is there some TCP keep alive issue?
Postgres is using the "system default" for TCP keep alive.
I'm currently testing ACLs via telnet, so the activity with the ACL dict 
is pretty low, hence, an idle timeout would make much sense.

# ../../sbin/dovecot --version
2.1.10 (a4f02f6c0d32)

dict connect string:
connect = host=localhost dbname=db user=user



2012-11-28 10:03:39 dict: Info: pgsql(localhost): Connected to database 
dovecot
2012-11-28 10:03:39 dict: Info: pgsql(localhost): Connected to database 
dovecot
2012-11-28 10:03:39 dict: Info: pgsql(localhost): Connected to database 
dovecot

2012-11-28 10:03:58 IMAP(user) [22922]: Info: Disconnected: Logged out 
in=23 out=763

2012-11-28 10:04:41 dict: Panic: file driver-pgsql.c: line 84 
(driver_pgsql_set_state): assertion failed: (state == SQL_DB_STATE_BUSY || 
db->cur_result == NULL)

2012-11-28 10:04:41 dict: Error: Raw backtrace: 
/usr/local/dovecot-2.1.10/lib/dovecot/libdovecot.so.0(+0x4857a) 
[0x7f91f511157a] -> 
/usr/local/dovecot-2.1.10/lib/dovecot/libdovecot.so.0(+0x485c6) 
[0x7f91f51115c6] -> 
/usr/local/dovecot-2.1.10/lib/dovecot/libdovecot.so.0(i_error+0) 
[0x7f91f50e4eaf] -> dovecot2.1/dict() [0x40aa36] -> dovecot2.1/dict() 
[0x40aa91] -> dovecot2.1/dict() [0x40bed3] -> dovecot2.1/dict() [0x409504] 
- -> dovecot2.1/dict(sql_db_cache_deinit+0x20) [0x408a60] -> 
dovecot2.1/dict(main+0x169) [0x405a59] -> 
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f91f4b5cc8d] -> 
dovecot2.1/dict() [0x404bb9]

2012-11-28 10:04:41 dict: Fatal: master: service(dict): child 22923 killed 
with signal 6 (core not dumped)


- -- 
Steffen Kaiser
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