System: PCI-less 486 w/83 MHz Pentium overdrive, Micronics systemboard
32 MB RAM, 1 GB SCSI disk as root partition, SCSI CDROM
VESA Local Bus, Adaptec 2842 SCSI card, VLB ATI Mach32
During the initial portion of the installation, the installer
is told to use the SCSI CDROM for installation. It inserts
the aic7xxx module, the SCSI devices are probed seemingly normally,
but at the end of the usual 5 second SCSI timeout period:
Kernel Panic: aic7xxx: unrecoverable BRKADRINT
In swapper task -- not syncing
The aic7xxx module loads correctly, without options, in 2.2.12-20, 2.2.13,
and all tested 2.3 kernels up to and including the 2.3.99-pre4 series.
Alan Cox's releases of the 2.2.15-preX series were not tested.
A separate boot floppy was created from CDROM, from the files in the
zoot-i386.iso image. All RPM's in the iso image checksum correctly, as does
the MD5 checksum on the entire image. Both boot floppies resulted in the
same kernel panic.
The system is being upgraded to RH 6.2 manually.
I have (verbosely) compiled aic7xxx from 6v0 distribution which works and
compared with 6v2 distribution aic7xxx which fails - the only (reported)
difference being the 6v2 aic7xxx generates the message:
"May 15 19:25:17 duality kernel: enable_irq() unbalanced from c888694a"
before the kernel panic which occurrs immediately after:
"May 15 19:25:17 duality kernel: (scsi1:0:-1:-1) Scanning channel for devices."
I can provide any info required from a Dual Pentium EISA 274x SCSI platform,
The current aic7xxx driver version (5.1.31) solves the problems with BRKADRINT
panixs on aic7770 based controllers including the 2842VLB controllers and the
2742 EISA controllers.