This is an automated weekly mailing of the FreeBSD 5.3 open issues list. The live version of this list is available at: http://www.FreeBSD.org/releases/5.3R/todo.html Automated mailing of this list will continue through the release of FreeBSD 5.3 FreeBSD 5.3 Open Issues Open Issues This is a list of open issues that need to be resolved for FreeBSD 5.3. If you have any updates for this list, please e-mail re_at_FreeBSD.org. Show stopper defects for 5.3-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |---------------------+-------------+---------------+--------------------| | | | | PREEMPTION appears | | | | | to increase the | | | | | chances of | | | | | triggering a race | | | | | condition in the | | | | | thread context | | PREEMPTION-related | | Scott Long, | management and | | hangs involving | In progress | Julian | scheduling code. | | threads | | Elischer | Patches to | | | | | mitigate the | | | | | problem have been | | | | | developed, with | | | | | on-going work to | | | | | come up with the | | | | | correct solution | | | | | prior to 5.3. | |---------------------+-------------+---------------+--------------------| | | | | Jun Kuriyama has | | | | | reported problems | | | | | with NFS over IPv6 | | | | | not functioning | | | | | correctly as of | | | | | the improved NFS | | | | | support for | | | | | disconnection | | | | | changes. Doug | | | | | White has tracked | | NFS over IPv6 | | | down the source of | | problems | In progress | Doug White | the problem | | | | | (EMSGSIZE being | | | | | returned by IPv6 | | | | | UDP send routine | | | | | due to | | | | | fragmentation), | | | | | and is currently | | | | | exploring possible | | | | | fixes. A patch has | | | | | been generated and | | | | | sent to the KAME | | | | | team for review. | |---------------------+-------------+---------------+--------------------| | | | | ether_input() | | | | | calls | | | | | random_harvest() | | | | | on the mbuf after | | | | | it has been handed | | | | | off to | | | | | ether_demux(), at | | ether_input() may | | Mark Murray, | which point it may | | harvest entropy | In progress | Robert Watson | have been free()'d | | from free()'d mbuf | | | back to the mbuf | | | | | allocator. It also | | | | | passes in a | | | | | pointer to the | | | | | mbuf itself, | | | | | rather than | | | | | ethernet frame | | | | | header. | |---------------------+-------------+---------------+--------------------| | | | | There have been | | | | | several reports of | | | | | if_em cards | | if_em wedging under | | | "wedging" under | | high pps | Not done | - | high | | | | | packets-per-second | | | | | load. This needs | | | | | to be debugged and | | | | | fixed. | |---------------------+-------------+---------------+--------------------| | | | | There are reports | | | | | that racoon is | | | | | unable to complete | | | | | IKE negotiation | | | | | due to a send to | | KAME IPSEC | | | the pfkey socket | | "ENOBUFS" problem | | | returning ENOBUFS. | | with racoon and | In progress | Robert Watson | This appears to be | | mbuma | | | a result of an | | | | | incorrect | | | | | assumption about | | | | | mbuf data size due | | | | | to a change | | | | | resulting from | | | | | mbuma. | |---------------------+-------------+---------------+--------------------| | | | | A recent | | | | | regression in the | | | | | USB code is | | | | | causing panics | | | | | when a USB device | | | | Warner Losh, | detaches, | | Panic on USB detach | Unknown | Scott Long | especially USB | | | | | hubs. Since | | | | | detaching a USB | | | | | device is a common | | | | | event, this must | | | | | be fixed for the | | | | | release. | +------------------------------------------------------------------------+ Required features for 5.3-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |-----------------+-------------+----------------+-----------------------| | BIND9 import | | | BIND9 must be | | into 5-CURRENT | In progress | Doug Barton | imported for | | | | | 5.3-RELEASE. | |-----------------+-------------+----------------+-----------------------| | | | | Kernel bits | | KSE support for | | | implemented, userland | | sparc64 | -- | -- | not implemented. | | | | | Required for | | | | | 5.3-RELEASE. | |-----------------+-------------+----------------+-----------------------| | | | | With improved support | | | | | for threading | | | | | primitives, support | | | | | is now required to | | GDB thread | | David Xu, | ease debugging of | | support | In progress | Marcel | threaded | | | | Moolenaar | applications. | | | | | Ideally, this support | | | | | will work for both | | | | | libthr and libkse | | | | | threading models. | |-----------------+-------------+----------------+-----------------------| | | | | There have been | | | | | several reports that | | | | | growfs(8) works | | | | | improperly with large | | Reports of UFS2 | | | disk sizes, and other | | "large disk" | In progress | Scott Long | size-related nits in | | problems | | | the current disk and | | | | | label management tool | | | | | set. These must be | | | | | resolved for | | | | | 5.3-RELEASE. | |-----------------+-------------+----------------+-----------------------| | | | | Synaptics updates to | | | | | the psm(4) driver | | Synaptics | | | have resulted in poor | | touchpad | In progress | Philip Paeps | interactivity for | | problems | | | taps and button press | | | | | events for some | | | | | users. | |-----------------+-------------+----------------+-----------------------| | | | | Entropy harvesting in | | | | | the interrupt and | | | | | incoming packet paths | | | | | currently involves a | | | | | large number of mutex | | | | | operations. In order | | | | | to improve | | | | | performance, it is | | Entropy | | | desirable to reduce | | harvesting | In progress | Robert Watson, | the number of mutex | | optimizations | | Mark Murray | operations | | | | | substantially. Work | | | | | is in progress to | | | | | improve the | | | | | harvesting code along | | | | | these lines, but has | | | | | not yet been properly | | | | | measured, and | | | | | therefore not yet | | | | | merged to CVS. | +------------------------------------------------------------------------+ Desired features for 5.3-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |------------------+-------------+----------------+----------------------| | | | | Almost all process | | | | | debugging tools have | | | | | been updated to use | | | | | non-procfs kernel | | | | | primitives, with the | | | | | exception of | | | | | truss(1). As procfs | | | | | is considered | | | | | deprecated due to | | | | | its inherent | | | | | security risks, it | | truss support | | | is highly desirable | | for ptrace | -- | -- | to update truss to | | | | | operate in a | | | | | post-procfs world. | | | | | Dag-Erling Smorgrav | | | | | had prototype | | | | | patches; | | | | | Robert Drehmel is | | | | | developing and | | | | | testing patches now. | | | | | Support for system | | | | | call tracing has | | | | | been added to | | | | | ptrace(). | |------------------+-------------+----------------+----------------------| | | | | FAST_IPSEC currently | | | | | cannot be used | | | | | directly with the | | | | | KAME IPv6 | | | | | implementation, | | | | | requiring an | | | | | additional level of | | | | | IP tunnel | | | | | indirection to | | | | | protect IPv6 packets | | FAST_IPSEC and | | | when using hardware | | KAME | Not done | -- | crypto acceleration. | | compatibility | | | This issue must be | | | | | resolved so that the | | | | | two services may | | | | | more easily be used | | | | | together. Among | | | | | other things, this | | | | | will require a | | | | | careful review of | | | | | the handling of mbuf | | | | | header copying and | | | | | m_tag support in the | | | | | KAME IPv6 code. | |------------------+-------------+----------------+----------------------| | | | | A process cannot be | | | | | interrupted while | | | | | waiting on a lock. | | rpc.lockd(8) | | | Fixing this requires | | stability | -- | -- | that the RPC code be | | | | | taught how to deal | | | | | with lock | | | | | cancellation and | | | | | interruption events. | |------------------+-------------+----------------+----------------------| | | | | Kernel modules are | | | | | currently built | | | | | independently from a | | | | | kernel | | | | | configuration, and | | | | | independently from | | | | | one another, | | | | | resulting in | | | | | substantially | | | | | redundant | | | | | compilation of | | | | | objects, as well as | | | | | the inability to | | | | | easily manage | | | | | compile-time options | | Revised kld | | | for kernel objects | | build | Not done | Peter Wemm | (such as MAC, PAE, | | infrastructure | | | etc) that may | | | | | require conditional | | | | | compilation in the | | | | | kernel modules. In | | | | | order to improve | | | | | build performance | | | | | and better support | | | | | options of this | | | | | sort, the KLD build | | | | | infrastructure needs | | | | | to be revamped. | | | | | Peter Wemm has done | | | | | some initial | | | | | prototyping, and | | | | | should be contacted | | | | | before starting on | | | | | this work. | |------------------+-------------+----------------+----------------------| | | | | Apple's Darwin | | | | | operating system has | | | | | fairly extensive | | Merge of Darwin | | | improvements to | | msdosfs, other | Not done | -- | msdosfs and other | | fixes | | | kernel services; | | | | | these fixes must be | | | | | reviewed and merged | | | | | to the FreeBSD tree. | |------------------+-------------+----------------+----------------------| | | | | Truss appears to | | | | | contain a race | | | | | condition during the | | | | | start-up of | | | | | debugging, which can | | | | | result in truss | | | | | failing to attach to | | | | | the process before | | | | | it exits. The | | | | | symptom is that | | | | | truss reports that | | | | | it cannot open the | | | | | procfs node | | | | | supporting the | | | | | process being | | | | | debugged. A bug also | | Race conditions | Errata | Robert Drehmel | appears to exist | | in truss | candidate | | where in truss will | | | | | hang if execve() | | | | | returns ENOENT. A | | | | | further race appears | | | | | to exist in which | | | | | truss will return | | | | | "PIOCWAIT: | | | | | Input/output error" | | | | | occasionally on | | | | | startup. The fix for | | | | | this sufficiently | | | | | changes process | | | | | execution handling | | | | | that we will defer | | | | | the fix to post-5.0 | | | | | and consider this | | | | | errata. | |------------------+-------------+----------------+----------------------| | | | | Truss appears to | | | | | have another | | | | | problem. It is | | | | | repeatable by | | | | | running "truss -f | | More truss | Not done | -- | fsck -p /", | | problems | | | suspending it with | | | | | ^Z, and then killing | | | | | truss. It will leave | | | | | behind the fsck | | | | | processes which will | | | | | be unkillable. | |------------------+-------------+----------------+----------------------| | | | | Many systems | | | | | supporting POSIX.1e | | | | | ACLs permit a minor | | | | | violation to that | | | | | specification, in | | | | | which the ACL_MASK | | ACL_MASK | | | entry overrides the | | override of | Not done | Robert Watson | umask, rather than | | umask support in | | | being intersected | | UFS | | | with it. The | | | | | resulting semantics | | | | | can be useful in | | | | | group-oriented | | | | | environments, and as | | | | | such would be very | | | | | helpful on FreeBSD. | |------------------+-------------+----------------+----------------------| | | | | The LOR reported in | | | | | PR kern/55175 needs | | filedesc LOR | Not done | -- | to be fixed. | | | | | Filedesc locking | | | | | needs to be heavily | | | | | reviewed in general. | |------------------+-------------+----------------+----------------------| | | | | Currently, MAC | | | | | protections are | | | | | enforced only on | | | | | locally originated | | | | | file system | | | | | operations (VOPs), | | | | | and not on RPCs | | | | | generated via the | | | | | NFS server. | | MAC support for | | | Improvements in NFS | | NFS Server | Not done | Robert Watson | server credential | | | | | handling are | | | | | required to correct | | | | | this problem, as | | | | | well as the | | | | | introduction of new | | | | | entry points to | | | | | properly label NFS | | | | | credentials and | | | | | perform enforcement | | | | | properly. | |------------------+-------------+----------------+----------------------| | | | | All PCI drivers must | | | | | use busdma for DMA; | | | | | no use of vtophys() | | busdma in all | In progress | -- | will be permitted | | PCI drivers | | | for any recent | | | | | device driver. ISA | | | | | drivers may be | | | | | exempt. | |------------------+-------------+----------------+----------------------| | | | | Userland bits | | KSE support for | In progress | Marcel | implemented, kernel | | alpha | | Moolenaar | bits not | | | | | implemented. | |------------------+-------------+----------------+----------------------| | | | | For kernel API/ABI | | | | | compatibility | | | | | reasons, it would be | | CAM locking | In progress | Scott Long, | desirable to have | | | | Justin Gibbs | the CAM locking | | | | | strategy determined | | | | | and loosely | | | | | implemented for 5.3. | |------------------+-------------+----------------+----------------------| | | | | When running syscons | | | | | on an Ultra-30 with | | | | | Creator-3D typing | | | | | characters on the | | | | | keyboard produces | | | | | garbage. Problem | | | | | reported by Kris | | syscons not | | | Kennaway. Debugging | | working on | Not done | -- | difficult due to | | Sparc64 Ultra-30 | | | lack of this | | | | | particular | | | | | configuration among | | | | | developers and | | | | | problem isn't | | | | | present on similar | | | | | hardware (e.g. no | | | | | problem on Ultra-60 | | | | | w/Creator-3D). | +------------------------------------------------------------------------+ Documentation items that must be resolved for 5.3 +-------------------------------------------------------------------------------------------------+ | Issue | Status |Responsible| Description | |--------------+-----------+-----------+----------------------------------------------------------| | | |Gavin |The installation documentation doesn't take into account | |i386 Floppy | |Atkinson, |the new floppy images (with a full kernel split across | |Installation |Done |Bruce A. |multiple disks). This should be updated. | |Docs | |Mah |References: | | | | |docs/70485 (closed) | |--------------+-----------+-----------+----------------------------------------------------------| |Finish | |Simon L. |Finish removing mention of individual devices in the | |hardware notes|In progress|Nielsen, |hardware notes and use auto-generated lists, based on | |trimming | |Christian |driver manual pages, instead. | | | |Brueffer | | |--------------+-----------+-----------+----------------------------------------------------------| | | | |The snd(4) and pcm(4) drivers have been renamed but their | | | | |manual pages are still outdated. sound(4) has to be added | | | | |and pcm(4), csa(4), gusc(4), sbc(4), and uaudio(4) should | |sound(4) | | |be revised. Other manual pages which refer to pcm(4) (if | |related manual|In progress|Simon L. |any) should possibly be revised, too. In addition, | |pages | |Nielsen |supported cards list needs to be updated. | | | | |References: | | | | |Manpage for snd_solo on -doc_at_ | | | | |[PATCH] sound(4) related manpages 5.3 TODO item on -doc_at_ | | | | |src/share/man/man4/Makefile rev.1.279 | |--------------+-----------+-----------+----------------------------------------------------------| | | | |This section is outdated, some rewrites are needed for | |Sound section | |Marc |5.3-RELEASE. | |in the |Done |Fonvieille |References: | |Handbook | | |doc/en_US.ISO8859-1/books/handbook/multimedia/chapter.sgml| | | | |rev.1.94 | |--------------+-----------+-----------+----------------------------------------------------------| |FDP | | |With the snd(4) and pcm(4) drivers changes, documentations| |documentations|Not done |-- |(FAQ) regarding the use of these drivers need an update. | |related pcm(4)| | | | |--------------+-----------+-----------+----------------------------------------------------------| | | | |Xin LI pointed out that FreeBSD 5.3-RELEASE is the first | | | | |stable release on 5.X and it is (hopefully) not for early | | | | |adopters. Early Adopter's Guide is still useful, but | |Early | |Bruce A. |contains a bit old information. Some parts of this guide | |Adopter's |Done |Mah, Tom |need a rewrite, and this document should be published as | |Guide | |Rhodes |"4.X to 5.X Migration Guide", which focuses difference | | | | |between 4.X and 5.X. | | | | |References: | | | | |Draft for review | | | | |discussion on -doc_at_ and -current_at_ | |--------------+-----------+-----------+----------------------------------------------------------| | | | |Some parts are outdated. doc/70485 has been committed, but| | | | |more work is needed to reflect the realities. bmah_at_ | | | | |pointed out that we should have "quick-start" installation| |Installation |Not done |Tom Rhodes |guide for each platform instead of the current ones | |Notes | | |because they become too long and difficult to be | | | | |maintained. | | | | |References: | | | | |doc/70485 (closed) | |--------------+-----------+-----------+----------------------------------------------------------| | | |Ken Tom, |Update the X11 chapter of the Handbook for X.Org's X11 | |Xorg |Done |Marc |server. | | | |Fonvieille |References: | | | | |books/handbook/config/chapter.sgml rev.1.147 | |--------------+-----------+-----------+----------------------------------------------------------| | | | |Ch.11.4 and 11.5 of the Handbook must be updated to | | | | |mention the new rc.d scripts and some ports use | |rc.d scripts |In progress|Tom Rhodes |/etc/rc.conf for their configuration. | | | | |References: | | | | |books/handbook/config/chapter.sgml rev.1.170 | | | | |books/handbook/config/chapter.sgml rev.1.172 | |--------------+-----------+-----------+----------------------------------------------------------| |Handbook's | | |Chapter 8 must be updated to match 5.3-RELEASE. | |kernel |Done |Ceri Davies|References: | |configuration | | |docs/70674 (closed) | |chapter | | |books/handbook/kernelconfig/chapter.sgml rev.1.135 | |--------------+-----------+-----------+----------------------------------------------------------| | | | |Some parts of Section 14.10 are outdated and are not | |Handbook's | | |correct for 5.X systems. | |IPsec section |Not done |-- |References: | | | | |ipsec on -doc_at_ | | | | |Problem with IPSEC in handbook on -doc_at_ | |--------------+-----------+-----------+----------------------------------------------------------| |Handbook's |Not done |-- |Vinum chapter needs to be revised for 5.X systems. | |Vinum chapter | | | | +-------------------------------------------------------------------------------------------------+ Testing focuses for 5.3-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |--------------------+---------------+--------------+--------------------| | | | | SCHED_ULE provides | | | | | better | | | | | interactivity, | | | | | higher | | | | | performance, and | | SCHED_ULE as the | | Jeff | the ability to | | default scheduler | Needs testing | Roberson | support pinning | | | | | and affinity. | | | | | Basic HTT | | | | | scheduling | | | | | policies should be | | | | | in place for 5.3 | | | | | also. | |--------------------+---------------+--------------+--------------------| | | | | KSE has matured to | | | | | the point of being | | | | | more stable and | | | | | POSIX-compliant | | | | | than the | | | | | traditional | | | | | libc_r. All Tier-1 | | | | | platforms MUST | | | | | have stable KSE | | | | David Xu, | support for 5.3 in | | KSE as the default | Needs testing | Daniel | order to support a | | threads library | | Eischen | consistent | | | | | transition. | | | | | Additionally, all | | | | | ports that depend | | | | | on the pthreads | | | | | API must be | | | | | modified to | | | | | properly detect | | | | | and support the | | | | | default threading | | | | | library. | |--------------------+---------------+--------------+--------------------| | | | | Binutils needs | | | | | updating in order | | Updated binutils | | David | to support new | | for all platforms | Needs testing | O'Brien | platforms, newer | | | | | GDB versions, and | | | | | Thread Local | | | | | Storage. | |--------------------+---------------+--------------+--------------------| | | | | The previous GCC | | | | | 3.3 snapshot | | | | | included | | | | | regressions in | | | | | alignment of | | | | | floating point | | gcc 3.3 floating | | | arguments, | | point alignment | Needs testing | | resulting in a | | regression | | | substantial | | | | | performance | | | | | degradation. The | | | | | recent GCC 3.4.2 | | | | | import should fix | | | | | this, but more | | | | | testing is needed. | |--------------------+---------------+--------------+--------------------| | | | | Jun Kuriyama has | | | | | reportged a failed | | | | | locking assertion | | | | | with IPv6 TCP | | in6_pcbnotify() | Needs testing | Robert | notifications. A | | panic with TCP | | Watson | patch has been | | | | | committed to the | | | | | CVS HEAD and | | | | | RELENG_5 and needs | | | | | further testing. | |--------------------+---------------+--------------+--------------------| | | | | To complete | | | | | support for | | | | | thread-local | | | | | storage on | | | | | FreeBSD, | | Per-platform | | Doug Rabson, | per-architecture | | Thread-Local | Needs testing | Marcel | changes must be | | Storage | | Moolenaar | made. Currently | | | | | pending platforms | | | | | are amd64, alpha, | | | | | ia64, i386, | | | | | sparc64, and | | | | | powerpc. | |--------------------+---------------+--------------+--------------------| | | | | High load on SMP | | | | | systems appears to | | | | | result in a hard | | | | | hang related to VM | | | | | IPI. Doug White | | SMP instability | | Doug White, | has prepared a | | under load | Needs testing | Alan L. Cox | candidate patch | | | | | that appears to | | | | | resolve this | | | | | instability, which | | | | | is currently in | | | | | testing for merge | | | | | to the CVS HEAD. | |--------------------+---------------+--------------+--------------------| | | | | Significant parts | | | | | of the network | | | | | stack (especially | | | | | IPv4, UNIX domain | | | | | IPC, and sockets) | | | | | now have | | | | | fine-grained | | | | | locking of their | | | | | data structures. | | | | | It's possible to | | | | | run many common | | | | | network subsystems | | | | | and services | | | | | without the Giant | | Fine-grained | | | lock. However, a | | network stack | | Robert | number of device | | locking without | Needs testing | Watson | drivers and less | | Giant | | | mainstream network | | | | | subsystems are | | | | | currently not | | | | | MPSAFE. By | | | | | 5.3-RELEASE, it is | | | | | necessary to have | | | | | the vast majority | | | | | of network code | | | | | running without | | | | | Giant, including | | | | | sockets, | | | | | permitting | | | | | complete | | | | | local<->remote | | | | | delivery without | | | | | grabbing Giant. | |--------------------+---------------+--------------+--------------------| | | | | KLDs work when | | | | | loaded from | | | | | userland, but not | | | | David | from the loader. | | kld support for | Needs testing | O'Brien, Ian | kldxref and loader | | amd64 | | Dowse | support has been | | | | | committed to HEAD | | | | | and RELENG_5 and | | | | | needs final | | | | | testing. | |--------------------+---------------+--------------+--------------------| | | | | Recent changes to | | | | | the ATA driver | | | | | trigger a bug on | | | | So/ren | sparc64 that | | ATA panics under | Needs testing | Schmidt, | causes a panic on | | sparc64 | | Scott Long | boot. This was | | | | | caused by bugs in | | | | | busdma that have | | | | | been hopefully | | | | | fixed. | |--------------------+---------------+--------------+--------------------| | | | | The ifconf() ioctl | | | | | for listing | | | | | network interfaces | | | | | performs a | | | | | copyout() while | | | | | holding the global | | | | | ifnet list mutex. | | | | | This generates a | | ifconf() sleep | | | witness warning in | | warning | Needs testing | Brooks Davis | the event that | | | | | copyout() | | | | | generates a page | | | | | fault, and risks | | | | | more serious | | | | | problems. A patch | | | | | has been committed | | | | | to HEAD and | | | | | RELENG_5, but | | | | | requires testing. | |--------------------+---------------+--------------+--------------------| | | | | There are reports | | | | | of applications | | | | | wedging in poll() | | | | | and select() while | | | | | running the | | | | | network stack | | | | | without the Giant | | | | | lock. A recent | | | | | sleepq change | | | | | appears to have | | | | | caused some of the | | | | | observed problems | | | | | to go away (others | | | | | are difficult to | | poll()/select() | | | test for due to | | application wedge | Needs testing | Robert | recent SMP | | reports with | | Watson | instability). A | | debug.mpsafenet=1 | | | fix has been | | | | | committed to CVS | | | | | HEAD and merged to | | | | | RELENG_5 and | | | | | appears to resolve | | | | | problems with | | | | | poll(); we are | | | | | waiting for | | | | | feedback that it | | | | | has corrected the | | | | | reported problems | | | | | with select() also | | | | | before moving this | | | | | to "testing" | | | | | status. | +------------------------------------------------------------------------+ ---------------------------------------------------------------------- home | contact | legal | (c) 1995-2004 The FreeBSD Project. All rights reserved. Last modified: 2004/09/26 19:31:47Received on Sat Jul 02 2005 - 23:04:02 UTC
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