openldap-bugs February 2024

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[Issue 9378] New: Crash in mdb_put() / mdb_page_dirty()
by openldap-its＠openldap.org 15 Apr '26

15 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=9378 Issue ID: 9378 Summary: Crash in mdb_put() / mdb_page_dirty() Product: LMDB Version: 0.9.26 Hardware: All OS: Linux Status: UNCONFIRMED Severity: normal Priority: --- Component: liblmdb Assignee: bugs(a)openldap.org Reporter: nate(a)kde.org Target Milestone: --- The KDE Baloo file indexer uses lmdb as its database (source code available at https://invent.kde.org/frameworks/baloo). Our most common crash, with over 100 duplicate bug reports, is in lmdb. Here's the bug report tracking it: https://bugs.kde.org/show_bug.cgi?id=389848. The version of lmdb does not seem to matter much. We have bug reports from Arch users with lmdb 0.9.26 as well as bug reports from people using many earlier versions. Here's an example backtrace, taken from https://bugs.kde.org/show_bug.cgi?id=426195: #6 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 #7 0x00007f3c0bbb9859 in __GI_abort () at abort.c:79 #8 0x00007f3c0b23ba83 in mdb_assert_fail (env=0x55e2ad710600, expr_txt=expr_txt@entry=0x7f3c0b23e02f "rc == 0", func=func@entry=0x7f3c0b23e978 <__func__.7221> "mdb_page_dirty", line=line@entry=2127, file=0x7f3c0b23e010 "mdb.c") at mdb.c:1542 #9 0x00007f3c0b2306d5 in mdb_page_dirty (mp=<optimized out>, txn=0x55e2ad7109f0) at mdb.c:2114 #10 mdb_page_dirty (txn=0x55e2ad7109f0, mp=<optimized out>) at mdb.c:2114 #11 0x00007f3c0b231966 in mdb_page_alloc (num=num@entry=1, mp=mp@entry=0x7f3c0727aee8, mc=<optimized out>) at mdb.c:2308 #12 0x00007f3c0b231ba3 in mdb_page_touch (mc=mc@entry=0x7f3c0727b420) at mdb.c:2495 #13 0x00007f3c0b2337c7 in mdb_cursor_touch (mc=mc@entry=0x7f3c0727b420) at mdb.c:6523 #14 0x00007f3c0b2368f9 in mdb_cursor_put (mc=mc@entry=0x7f3c0727b420, key=key@entry=0x7f3c0727b810, data=data@entry=0x7f3c0727b820, flags=flags@entry=0) at mdb.c:6657 #15 0x00007f3c0b23976b in mdb_put (txn=0x55e2ad7109f0, dbi=5, key=key@entry=0x7f3c0727b810, data=data@entry=0x7f3c0727b820, flags=flags@entry=0) at mdb.c:9022 #16 0x00007f3c0c7124c5 in Baloo::DocumentDB::put (this=this@entry=0x7f3c0727b960, docId=<optimized out>, docId@entry=27041423333263366, list=...) at ./src/engine/documentdb.cpp:79 #17 0x00007f3c0c743da7 in Baloo::WriteTransaction::replaceDocument (this=0x55e2ad7ea340, doc=..., operations=operations@entry=...) at ./src/engine/writetransaction.cpp:232 #18 0x00007f3c0c736b16 in Baloo::Transaction::replaceDocument (this=this@entry=0x7f3c0727bc10, doc=..., operations=operations@entry=...) at ./src/engine/transaction.cpp:295 #19 0x000055e2ac5d6cbc in Baloo::UnindexedFileIndexer::run (this=0x55e2ad79ca20) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qrefcount.h:60 #20 0x00007f3c0c177f82 in QThreadPoolThread::run (this=0x55e2ad717f20) at thread/qthreadpool.cpp:99 #21 0x00007f3c0c1749d2 in QThreadPrivate::start (arg=0x55e2ad717f20) at thread/qthread_unix.cpp:361 #22 0x00007f3c0b29d609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #23 0x00007f3c0bcb6103 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9736] New: pwrite bug in OSX breaking LMDB promise about the maximum value size
by openldap-its＠openldap.org 15 Apr '26

15 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=9736 Issue ID: 9736 Summary: pwrite bug in OSX breaking LMDB promise about the maximum value size Product: LMDB Version: unspecified Hardware: All OS: Mac OS Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: liblmdb Assignee: bugs(a)openldap.org Reporter: renault.cle(a)gmail.com Target Milestone: --- Hi, I was working with LMDB and found an issue when trying to write a value of approximately 3.3GiB in the database, I dive into the LMDB source code of the mdb_put method using the lldb debugger and found out that it was not related to an issue in LMDB itself but rather a bug in the pwrite function of the Mac OS libc implementation. The pwrite function is given four parameters, the file descriptor, the buffer, the count of bytes to write from the buffer and, the offset of where to write it in the file. On Mac OS the count of bytes is a size_t that must be a 64bits unsigned integer but when you call pwrite with a number bigger or equal to 2^31 it returns an error 22 (invalid argument). LMDB was returning a 22 error from the mdb_put call and not an EINVAL because the error was cause by an internal issue and not something catchable by LMDB. I am not sure about what we can do, can we implement this single pwrite [1] as multiple pwrite with counts smaller than 2^31 in a loop, just for Mac OS? Like for Windows where we do specific things for this operating system too? I also found this issue on the RocksDB repository [2] about a similar problem they have with pwrite and write on Mac OS it seems. I understand that this is not a real promise that LMDB is specifying but rather an "in theory" rule [3]. Thank you for your time, kero [1]: https://github.com/LMDB/lmdb/blob/01b1b7dc204abdf3849536979205dc9e3a0e3ece/… [2]: https://github.com/facebook/rocksdb/issues/5169 [3]: http://www.lmdb.tech/doc/group__mdb.html#structMDB__val -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10054] New: Value size limited to 2,147,479,552 bytes
by openldap-its＠openldap.org 15 Apr '26

15 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=10054 Issue ID: 10054 Summary: Value size limited to 2,147,479,552 bytes Product: LMDB Version: unspecified Hardware: x86_64 OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: liblmdb Assignee: bugs(a)openldap.org Reporter: louis(a)meilisearch.com Target Milestone: --- Hello, According to the documentation[0], a database that is not using `MDB_DUPSORT` can store values up to `0xffffffff` bytes (around 4GB). In practice, under Linux, the actual limit is `0x7ffff000` though (2^31 - 4096, so around 2GB). This is due to the write loop in `mdb_page_flush`. The `wsize` value determining how many bytes will be written can be as big as `4096*dp->mp_pages`[1], and the number of overflow pages grows with the size of the value put inside the DB. The `wsize` is not split in smaller chunks in the case where there are many overflow pages to write, and as a result the call to `pwrite`[2] does not perform a full write, but only a "short" write of 2147479552 bytes (the maximum allowed on a call to `pwrite` on Linux[3]). This would be OK if the short write condition was handled by looping and performing another `pwrite` with the rest of the data, but instead `EIO` is returned[4]. There seems to be a related, but different issue on macOS when trying to `pwrite` more the 2^31 bytes, that was already reported[5]. This issue was reported to me by a Meilisearch user because it causes their database indexing to fail[6]. I had to investigate a bit because their setup was peculiar (high number of documents in their database) and the `EIO` error code is not very descriptive of the underlying issue. I join a C reproducer of the issue that attempts to add a 2147479553 bytes value to the DB and fails with `EIO` (decreasing `nb_items` to a smaller value such as `2107479552` does succeed)[7]. Thank you for making LMDB! Louis Dureuil. [0]: https://github.com/LMDB/lmdb/blob/mdb.master/libraries/liblmdb/lmdb.h#LL284… [1]: https://github.com/LMDB/lmdb/blob/mdb.master/libraries/liblmdb/mdb.c#LL3770… [2]: https://github.com/LMDB/lmdb/blob/mdb.master/libraries/liblmdb/mdb.c#L3820 [3]: https://stackoverflow.com/questions/70368651/why-cant-linux-write-more-than… [4]: https://github.com/LMDB/lmdb/blob/mdb.master/libraries/liblmdb/mdb.c#L3840 [5]: https://bugs.openldap.org/show_bug.cgi?id=9736 [6]: https://github.com/meilisearch/meilisearch/issues/3654 [7]: https://github.com/dureuill/lmdb_3654/tree/main -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10050] New: Use of stack allocated string in mdb_strerror
by openldap-its＠openldap.org 15 Apr '26

15 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=10050 Issue ID: 10050 Summary: Use of stack allocated string in mdb_strerror Product: LMDB Version: unspecified Hardware: All OS: Windows Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: liblmdb Assignee: bugs(a)openldap.org Reporter: es(a)m-labs.hk Target Milestone: --- https://git.openldap.org/openldap/openldap/-/blob/mdb.master/libraries/libl… This piece of code exists from 2014, and these lines are not working outside of MSVC. Moreover, they lead to segfaults in MINGW compiled environments. Please see the patch we use for potential fix: https://github.com/msys2/MINGW-packages/blob/31012dd33a32390d1e5f9b93388799… -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10113] New: make connection debug output more uniform
by openldap-its＠openldap.org 10 Apr '26

10 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=10113 Issue ID: 10113 Summary: make connection debug output more uniform Product: OpenLDAP Version: 2.6.6 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: enhancement Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: hyc(a)openldap.org Target Milestone: --- Here's what some of the debug output looks like currently: 6529a16e.07884bd6 0x7f7a68dff640 daemon: epoll: listen=8 active_threads=0 tvp=NULL 6529a16e.0788551d 0x7f7a68dff640 daemon: activity on 1 descriptor 6529a16e.07885e63 0x7f7a68dff640 daemon: activity on:6529a16e.07886607 0x7f7a68dff640 6529a16e.07886f93 0x7f7a68dff640 daemon: epoll: listen=7 active_threads=0 tvp=NULL 6529a16e.07887737 0x7f7a68dff640 daemon: epoll: listen=8 active_threads=0 tvp=NULL 6529a16e.0788987f 0x7f7a63fff640 tls_write: want=239 error=Broken pipe 6529a16e.0788a369 0x7f7a63fff640 TLS trace: SSL_accept:SSLv3/TLS write session ticket 6529a16e.0788d027 0x7f7a63fff640 connection_read(12): unable to get TLS client DN, error=49 id=1000 6529a16e.0788e6cc 0x7f7a63fff640 conn=1000 fd=12 TLS established tls_ssf=128 ssf=128 tls_proto=TLSv1.3 tls_cipher=TLS_AES_128_GCM_SHA256 6529a16e.078974a9 0x7f7a68dff640 daemon: activity on 2 descriptors 6529a16e.07898cf1 0x7f7a68dff640 daemon: activity on:6529a16e.07899409 0x7f7a68dff640 12r6529a16e.07899ef3 0x7f7a68dff640 6529a16e.0789a839 0x7f7a68dff640 daemon: read active on 12 6529a16e.0789c1de 0x7f7a68dff640 daemon: epoll: listen=7 active_threads=0 tvp=NULL 6529a16e.0789cd0e 0x7f7a68dff640 daemon: epoll: listen=8 active_threads=0 tvp=NULL 6529a16e.0789d9e0 0x7f7a68dff640 daemon: activity on 1 descriptor 6529a16e.0789e36d 0x7f7a68dff640 daemon: activity on:6529a16e.0789eaca 0x7f7a68dff640 6529a16e.0789f26e 0x7f7a68dff640 daemon: epoll: listen=7 active_threads=0 tvp=NULL 6529a16e.0789fd9d 0x7f7a68dff640 daemon: epoll: listen=8 active_threads=0 tvp=NULL 6529a16e.078a0a70 0x7f7a63fff640 connection_get(12) 6529a16e.078a1ea0 0x7f7a63fff640 connection_get(12): got connid=1000 6529a16e.078a25b8 0x7f7a63fff640 connection_read(12): checking for input on id=1000 6529a16e.078a32d0 0x7f7a63fff640 ber_get_next 6529a16e.078a6a78 0x7f7a63fff640 tls_read: want=5, got=5 6529a16e.078a7d91 0x7f7a63fff640 0000: 30 05 02 01 02 0.... 6529a16e.078aa0c2 0x7f7a63fff640 tls_write: want=24 error=Broken pipe 6529a16e.078aa820 0x7f7a63fff640 ldap_read: want=8 error=Broken pipe 6529a16e.078ab121 0x7f7a63fff640 ber_get_next on fd 12 failed errno=32 (Broken pipe) 6529a16e.078aba67 0x7f7a63fff640 connection_read(12): input error=-2 id=1000, closing. 6529a16e.078ac3ae 0x7f7a63fff640 connection_closing: readying conn=1000 sd=12 for close 6529a16e.078ad0c6 0x7f7a63fff640 connection_close: conn=1000 sd=12 6529a16e.078aed26 0x7f7a63fff640 daemon: removing 12 6529a16e.078b2ffd 0x7f7a68dff640 daemon: activity on 1 descriptor 6529a16e.078b4616 0x7f7a63fff640 conn=1000 fd=12 closed (connection lost) Most operations will be logged with "conn=xxxx fd=yy blah blah" but things like connection_close etc log "blah blah conn=xxxx sd=yy" instead. It would be nice if they all uniformly started with "conn=xxxx fd=yy blah blah" This is a trivial change. Could be a good first-time commit for a new dev. -- You are receiving this mail because: You are on the CC list for the issue.

1 4

[Issue 9431] New: back-mdb: Always have an equality index for objectClass
by openldap-its＠openldap.org 10 Apr '26

10 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=9431 Issue ID: 9431 Summary: back-mdb: Always have an equality index for objectClass Product: OpenLDAP Version: 2.5 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: backends Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- Data storage backends require an equality index on objectClass to function correctly. As this is a hard requirement it should be automatic with back-mdb. Why this wasn't done in the past with other backends isn't exactly clear, it may have been due to their requirements to have additional cache layers. That however is not necessary with back-mdb. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9612] New: Change index_hash64 default to on
by openldap-its＠openldap.org 07 Apr '26

07 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=9612 Issue ID: 9612 Summary: Change index_hash64 default to on Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- Change the default value of index_hash64. By default this means slapd won't run on a 32-bit CPU (It will continue to work on 32-bit OSes running on 64-bit CPUs). If someone needs to run slapd on a 32-bit CPU they can turn this option off. In the documentation, mark the option as deprecated for eventual removal in a future release. -- You are receiving this mail because: You are on the CC list for the issue.

1 5

[Issue 9667] New: 2.6 to 2.7 upgrade documentation
by openldap-its＠openldap.org 07 Apr '26

07 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=9667 Issue ID: 9667 Summary: 2.6 to 2.7 upgrade documentation Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: documentation Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- Need to document any upgrade information for going from 2.6 to 2.7 -- You are receiving this mail because: You are on the CC list for the issue.

1 5

[Issue 9343] New: Expand ppolicy policy configuration to allow URL filter
by openldap-its＠openldap.org 07 Apr '26

07 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=9343 Issue ID: 9343 Summary: Expand ppolicy policy configuration to allow URL filter Product: OpenLDAP Version: 2.5 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: overlays Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- Currently, ppolicy only supports a single global default policy, and past that any policies must be manually added to a given user entry if they are supposed to have something other than the default policy. Also, some sites want no default policy, and only a specific subset to have a policy applied to them. For both of these cases, it would be helpful if it were possible to configure a policy to apply to a set of users via a URL similar to the way we handle creating groups of users in dynlist -- You are receiving this mail because: You are on the CC list for the issue.

1 18

[Issue 9596] New: Python test suite
by openldap-its＠openldap.org 07 Apr '26

07 Apr '26

https://bugs.openldap.org/show_bug.cgi?id=9596 Issue ID: 9596 Summary: Python test suite Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: build Assignee: bugs(a)openldap.org Reporter: ondra(a)mistotebe.net Target Milestone: --- The bash test suite is extremely limited, hard to write for and slow. We can't lose it as it is also portable, but something should be introduced for developers/CI on more modern systems and increase coverage. A Python 3 seed for one is in development in MR!347. -- You are receiving this mail because: You are on the CC list for the issue.

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openldap-bugs February 2024