6.0-REL problems with ISA ed0, FFS corruption and ancient hardware

Fabian Keil freebsd-listen at fabiankeil.de
Sun Mar 19 17:19:43 UTC 2006

"Matt Emmerton" <matt at compar.com> wrote:

> I recently upgraded a 4.11-REL machine to 6.0-REL and have run into
> some snags.  While the installation from CD went fine, after
> configuring and enabling my ed0 NIC, bad things start to happen.
> FWIW, this machine is an ancient (hardware circa 1991, BIOS circa
> 1994) dual-Pentium 133 MHz machine, with EISA/PCI and onboard SCSI.

At least it got "lots" of memory, last week I installed FreeBSD
6.1-PRERELEASE on a P90 with 16MB RAM.

> So far I can reliably reproduce two panics, one appears to be a ed
> driver bug (based on reports of similar panics with different NICs,
> notably nge) and one is a filesystem corruption problem.
> Here's the process that I go through to reliably reproduce both
> problems. 1) Boot machine in multi-user mode
> 2) After ifconfig ed0, machine panics with a trap 12 in ithread_loop.
> 3) In debugger, reset (or panic to get vmcore)
> 4) Reboot in multi-user mode, but set "hint.ed.0.disabled=1" in the
> boot loader (to avoid ifconifg panic)
> 5) Root filesystem is fsckd; all other filesystems are scheduled for
> background fsck
> 6) Encounter panic "ffs_valloc: dup alloc"
> 7) In debugger, reset (or panic to get vmcore)

Did you try to do a foreground fsck in single user mode?

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