Segfault in libxapian when searching

[Sebastian Poeplau]

Sorry, I just discovered that the problem has been reported before for
the Arch package "xapian-core" [0] and upstream with the Xapian project
[1]. It seems to be a bug on their side that should be fixed in the next
release.

Anyway, if anyone runs into the same issue they can now find the
references on this list also ;)

Cheers,
Sebastian

[0] https://bugs.archlinux.org/task/64273?project=1&string=xapian-core
[1] https://trac.xapian.org/ticket/796


Sebastian Poeplau <sebastian.poeplau at eurecom.fr> writes:

> Hi all,
>
> After a recent upgrade to Notmuch 0.29.2 and Xapian 1.4.13 I see Notmuch
> fail with a segmentation fault inside libxapian.so when executing
> queries that I've been running regularly and without problems before.
>
> Let me start with the stack trace:
>
> Stack trace of thread 3133:
> #0  0x00007fe0eb4ecee4 n/a (libxapian.so.30)
> #1  0x00007fe0eb4f06fe n/a (libxapian.so.30)
> #2  0x00007fe0eb4f7284 n/a (libxapian.so.30)
> #3  0x00007fe0eb4161f8 _ZNK6Xapian7Enquire8Internal8get_msetEjjjPKNS_4RSetEPKNS_12MatchDeciderE (libxapian.so.30)
> #4  0x00007fe0eb416466 _ZNK6Xapian7Enquire8get_msetEjjjPKNS_4RSetEPKNS_12MatchDeciderE (libxapian.so.30)
> #5  0x00007fe0ebbc49ca n/a (libnotmuch.so.5)
> #6  0x00007fe0ebbc527e notmuch_query_search_threads (libnotmuch.so.5)
> #7  0x0000557fc9f05c68 n/a (notmuch)
> #8  0x0000557fc9efa12c n/a (notmuch)
> #9  0x00007fe0eb5d7153 __libc_start_main (libc.so.6)
> #10 0x0000557fc9efa2ee n/a (notmuch)
>
> The type of query in question is the following: "not tag:notmuch-list
> and to:notmuch at notmuchmail.org". It crashes, but only if there is a
> matching message. Quoting the email address separately doesn't change
> anything. I have several such queries for different lists in my post-new
> hook, and the problem seems to apply to all of them.
>
> When I run the search with NOTMUCH_DEBUG_QUERY=1, I get the following
> query information:
>
> Query string is:
> not tag:notmuch-list and to:notmuch at notmuchmail.org
> Exclude query is:
> Query((Kdeleted OR Kspam))
> Final query is:
> Query(((Tmail AND ((<alldocuments> AND_NOT Knotmuch-list) AND (XTOnotmuch at 1 PHRASE 3 XTOnotmuchmail at 2 PHRASE 3 XTOorg at 3))) AND_NOT (Kdeleted OR Kspam)))
>
> Does anyone have an idea where the problem could be or how to
> investigate further?
>
> Thanks,
> Sebastian