[notmuch] Segfault searching for tags

[Jeffrey Ollie]

On Thu, Nov 19, 2009 at 9:45 AM, Adrian Perez de Castro
<aperez at igalia.com> wrote:
> On Wed, 18 Nov 2009 12:00:10 -0600, Jeffrey wrote:
>
>> Getting the following segfault with 306635c2 on Fedora 12.  Seems to
>> be happening with any 'tag:' search that returns results.  For
>> example, 'notmuch search tag:inbox' and 'notmuch search tag:unread'
>> segfault but 'notmuch search tag:nosuchtag', 'notmuch search
>> subject:logwatch' and 'notmuch search video' seem to work fine.
>>
>> Core was generated by `/usr/bin/notmuch search --sort=oldest-first tag:inbox'.
>> Program terminated with signal 11, Segmentation fault.
>> \#0  Xapian::TermIterator::operator* (this=<value optimized out>)
>>     at api/omtermlistiterator.cc:78
>> 78        RETURN(internal->get_termname());
>> Current language:  auto
>> The current source language is "auto; currently c++".
>
> I have hit what I believe is exactly the same problem. In my case, some
> results are printed when I execute "notmuch search tag:inbox", and then
> the program crashes in the same exact place.
>
> The thing is that in notmuch_message_get_in_reply_to(), line 288, a NULL
> instance of Xapian::TermIterator is dereferenced. In my particular case,
> the culpript is a cache file of Claws-Mail, as seen in the following GDB
> session:
> [...]
> As you can see, there "filename" points to a Claws-Mail cache file, which
> is a binary file (I can provide a copy if needed). I suspect that this is
> related to the fact that the iterator ends up being NULL somehow.

I straced some of the crashes, and the last file that was read before
the crash was a malformed message.  I've attached one of the messages.
 I've been using offlineimap to sync my gmail mailbox to my laptop so
that I can use notmuch.  offlineimap isn't the most stable program,
but I'm not sure yet if offlineimap is causing the problem or if
that's the way the message is in gmail.

-- 
Jeff Ollie
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