[Bug 47957] kernel 2.6.15-23-686 boot fails during SCSI (BusLogic) initialization

[khaj zrlo]

Public bug reported:

I have 2 systems with BusLogic SCSI controllers that fail during boot at
the time the SCSI subsystem is initialized. These systems are both dual
CPU (PII-450Mhz) with 1GB RAM and multiple SCSI disks.

The SCSI cards are:
SCSI storage controller: BusLogic BT-946C (BA80C30) [MultiMaster 10] (rev 08)
(as reported by lspci)

If I revert to kernel 2.6.12-10-686-smp, the systems boot without
problem.

But the system fails to get past the SCSI initialization with kernel
2.6.15-23-686.

If I turn off the "quiet" kernel boot parameter to see what is going on,
quite a lot of output is printed on the console.

Amongst all the SCSI initialization I see a few errors like this (copied by hand):
0:0:9:0 scsi Device offlined not ready after error recovery

But I didn't see anything that looked like an error preceding that
message.

The SCSI initialization takes much longer than usual (that is, much
longer than a successful boot like with kernel 2.6.12-10-686-smp).

Finally, the screen prints
Done.
Begin. Waiting for root filesystem.

And then it complains that it can't access the root filesystem on
/dev/sda3, prints out more errors about accessing offline devices, and
drops to a BusyBox shell prompt.

This bug looks very similar to bug 41061
https://launchpad.net/distros/ubuntu/+source/linux-source-2.6.15/+bug/41061
I opened a new bug because it concerns a different SCSI driver, but if it is determined to be a dup of that bug, that's ok.

** Affects: linux-source-2.6.15 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

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kernel 2.6.15-23-686 boot fails during SCSI (BusLogic) initialization
https://launchpad.net/bugs/47957