bogofilter/bogoutil concurrency crash?

[David Relson]

Hi Jim,

Interesting...  I think another Mac OS-X person will need to confirm this 
problem.  A quick test on my Linux box worked properly.  In the grand 
tradition of pointing the finger, my guess is that it's either a locking 
problem or a berkeleydb problem.

Have you run "make check"?  One of the things it does is to stress test 
file locking.  Other OS-X users are running bogofilter, but possibly they 
haven't tried your scenario.

In actual usage, it's rarely necessary to run bogoutil.  For those times 
when you need to dump the database, you _could_ make a copy of it and dump 
the copy.  That would avoid any delays caused by bogoutil locking the 
production database.

Anyhow, I think we need to hear from others more familiar with OS-X than am I.

David

At 07:10 PM 4/6/03, Jim Correia wrote:

>Hi,
>
>I just build the latest stable release of bogofilter (0.11.1.3) on Mac OS 
>X with Berkeley DB 4.1.25.
>
>Then I trained it with a bunch of messages (1135 spam, 16546 good).
>
>While I was training it, I ran into a crash. I was running a script which 
>was doing
>
>bogofilter -n -I mbox
>
>and while that was running in one terminal, I was using bogoutil in 
>another, and bogofilter in the 1st died.
>
>Command:    bogofilter
>PID:        27945
>
>Exception:  EXC_BAD_ACCESS (0x0001)
>Codes:      KERN_INVALID_ADDRESS (0x0001) at 0xdbdbdbd8
>
>Thread 0 Crashed:
>  #0   0xdbdbdbd8 in 0xdbdbdbd8
>  #1   0x0000a2f4 in db_getvalue (datastore_db.c:240)
>  #2   0x00006704 in open_wordlists (wordlists.c:157)
>  #3   0x00002c0c in main (main.c:80)
>  #4   0x00002788 in _start (crt.c:267)
>  #5   0x00002608 in start
>
>I can reproduce this at will by doing the following:
>
>In one terminal execute
>
>bogoutil -d goodlist.db | more
>
>leave that running, and in another do
>
>bogofilter -p
>
>bogofilter dies in the way described.
>
>Is anyone aware of the bug? (I'm not familiar with the source or Berkeley 
>db, but I can try to debug the problem given pointers.)
>
>I was about to put bogofilter into production use in my .procmailrc
>
>Should I be concerned about this problem and hold off? (I didn't seem to 
>be able to recreate the crash with 2 bogofilters, but definitely with a 
>bogofilter and a bogoutil running.)
>
>Jim
>
>
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