Kernel panic when reboot on server with a Promise SX4000 and two ATA disks RAID1.

Magnus Kling klingfon at
Mon May 18 07:25:15 UTC 2009

2009/5/18 Alexander Motin <mav at>

> Hi.
> Magnus Kling wrote:
>> After having some trouble with ACPI kernel in 7.1, regarding booting with
>> a Promise SX4000 card in a RAID1 setup, I tried to upgrade to CURRENT to
>> test the bits that John Baldwin wrote and had commited to head.
>>  Result:
>> Well, it boots ok but on reboot I get a kernel panic after the disks have
>> made the sync.
>>  Attached is a bt and panic message.
> According to backtrace, system tried to reference address 0xc while sending
> final flush command to the drive. ATA has no other shutdown actions except
> this, so any contexts and states should not be lost in any case. And as soon
> as your drive was detected, the controller is probably operable. Haven't you
> seen any other ATA error messages during boot or later?
> If my i386 kernel is more or less coherent to your's,
> ata_promise_sx4_command+0x39 address where it have crashed means
>        caddr_t window = rman_get_virtual(ctlr->r_res1);
> line, and especially 'ctlr->r_res1' part. So looks like
>        struct ata_pci_controller *ctlr = device_get_softc(gparent);
> returned NULL there. But the same technique used by many other ATA drivers
> without problems, so I am a bit surprised.
> Is the problem continuously repeatable? Does the controller operates well
> all other time before shutdown? Are you sure that you have rebuilt your
> kernel correctly?
> --
> Alexander Motin

Yes it is repeatable. Happens every reboot or shutdown. Controller works ok
all other time. (I have my homedir mounted to the raidarray.)

The source was synced and then I did a normal:
make buildworld
make buildkernel
make installkernel
reboot to singel user mode and mergemaster -p + make installworld +
mergemaster then reboot.

I will try to compile it again...


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