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Open Issues

This is a list of open issues that need to be resolved for FreeBSD 5.1. If you have any updates for this list, please e-mail re@FreeBSD.org.

Must Resolve Issues for 5.1-RELEASE

IssueStatusResponsibleDescription
ipfw/ipfw2 alignment issues on alpha/sparc64 In progress &a.luigi; There are reports of alignment problems with ipfw and/or ipfw2 on 64-bit platforms (specifically alpha and sparc64).
ia64 stability -- -- &a.kris; reports high instability of 5.0-CURRENT on ia64 machines, such as the pluto* machines. These problems need to be fixed in order to get a successful package build.
MAC Framework devfs path fixes In progress &a.rwatson; &a.green; has submitted patches to improve the consistency of the pathnames passed into the MAC Framework devfs labeling entry points. These patches need to be thoroughly reviewed and tested, then merged.
Panic on load/unload a kernel module for a driver already statically linked into the kernel. Patch approved &a.mux; If a network device driver, possibly any driver, is linked into the kernel and then loaded and unloaded as a module, the kernel will panic. This has been observed with both if_dc and if_fxp.
rtld-elf thread-safety patch submitted &a.kan; Update the run-time link editor (rtld) thread-safe with libpthread.
rpc.lockd(8) stability In progress &a.rwatson; rpc.lockd(8) client-side and server-side NFS locking appears to have a number of serious bugs which prevent NFS locking from working properly in a number of common scenarios. These bugs must be resolved to ship 5.1-RELEASE. Work is underway to classify and track the bugs.
data corruption reports In progress &a.peter;, &a.bmilekic; There have been reports of memory/data corruption on some systems; one working hypothesis is that this corresponds to an undocumented bug in a particular line of Intel and AMD processors, but it's unclear whether current work-arounds are correcting or masking the problem. Patches are being circulated to test this hypothesis, but developers are encouraged to be on the lookout for possible data corruption bugs.

Desired Features for 5.1-RELEASE

- - - - - - -
IssueStatusResponsibleDescription
Race conditions in truss Errata candidate &a.robert; 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 appears to exist 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.
amd/mountd bugspatch approved&a.mbr;If amd(8) does mount more than one fs from a host, the second call - to mountd on the server gets aborted even if the read does return - EAGAIN. This is definitly a bug in the nonblocking rpc code. If truss - or ktrace is attached on mountd, the bug happens almost all times, - else 3-10 times of 10 trys. Since there have been several reports - of amd irregularity on 5.1-BETA, it's important to get this fixed - for the release.

Documentation items that must be resolved for 5.1

IssueStatusResponsibleDescription
busdma man page In progress &a.hmp; As BUSDMA is now the required driver API for DMA access in hardware device drivers as of 5.1-RELEASE, we need to make sure it's properly documented. A man page is in progress and needs to be appropriately reviewed and committed prior to the release.

Areas requiring immediate testing

IssueStatusResponsibleDescription
Fresh ACPI-CA import -- -- The 20030228 vendor sources have been imported. Further testing is appreciated.
PAE support for i386 -- -- PAE support allows the use of up to 64GB of RAM on Pentium Pro and above systems. Virtual addresses are still constrained to 32-bits.
if_wi problems on Lucent hardware -- -- The recently upgraded if_wi driver is more tuned to Prism hardware than to Lucent hardware, resulting in system lockups and poor performance when using Lucent hardware. These problems are believed to be fixed but more testing is welcome.
UFS2 as installation, newfs default -- &a.rwatson; For 5.1-RELEASE, the default file system type for newly created file systems is UFS2 rather than UFS1. newfs(8) and sysinstall(8) have been updated to use this new default. Testing to make sure all goes well after the change (committed on April 20, 2003) is vital.
NSSwitch support -- &a.nectar; Support for pluggable directory services using NSS, including adaptations of current directory services (local databases, NIS), and support for new services (LDAP, Active Directory, etc). This change has been committed, and requires broader testing.
Spurious alpha panics -- -- &a.kris; reports that he has seen several unique panics on the alpha machines, but since gdb -k doesn't work on alpha I haven't been able to get more than a DDB traceback. No-one has looked into them.
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