isp driver causes panic in 10-stable

[Anton Shterenlikht]

isp0: <Qlogic ISP 2422 PCI FC-AL Adapter> port 0x300-0x3ff mem 0x100000-0x100fff at device 3.0 on pci1

I used this card for years on ia64, from 8-current
to 11-current. Now that ia64 is not supported,
I wanted to move it into sparc64 10-stable box
(SunBlade 1500 silver workstation). The card is
recognised, see above, but shortly after I get
this panic (single user mode):

isp0: <Qlogic ISP 2422 PCI FC-AL Adapter> port 0x300-0x3ff mem 0x100000-0x100fff at device 3.0 on pci1
nexus0: <i2c> mem 0x4000fc64000-0x4000fc6400f type i2c (no driver attached)
nexus0: <syscons> type unknown (no driver attached)
rtc0: <Real-Time Clock> at port 0x70-0x71 on isa0
uart0: <16550 or compatible> at port 0x3f8-0x3ff irq 44 on isa0
uart0: console (9600,n,8,1)
uart1: <16550 or compatible> at port 0x2e8-0x2ef irq 44 on isa0
WITNESS: unable to allocate a new witness object
Timecounter "tick" frequency 1503000000 Hz quality 1000
Timecounter "stick" frequency 12000000 Hz quality 1000
Event timer "tick" frequency 1503000000 Hz quality 1000
Timecounters tick every 1.000 msec
usbus0: 12Mbps Full Speed USB v1.0
usbus1: 12Mbps Full Speed USB v1.0
panic: trap: memory address not aligned (kernel)
KDB: stack backtrace:
vpanic() at vpanic+0xfc
panic() at panic+0x20
trap() at trap+0x5cc
-- memory address not aligned sfar=0x1001ee021 sfsr=0x40029 %o7=0xc0137bac --
userland() at isp_get_ridacq+0x118
user trace: trap %o7=0xc0137bac
pc 0xc0137cb8, sp 0xd766e851
done
KDB: enter: panic
[ thread pid 12 tid 100031 ]
Stopped at      kdb_enter+0x80: ta              %xcc, 1
db> 

Is this a known problem?

with bt I get an endless stream of:

KDB: reentering
KDB: stack backtrace:
kdb_reenter() at kdb_reenter+0x5c
trap() at trap+0x2fc
-- kernel stack fault %o7=0xc00c60b0 --
db_read_bytes() at db_read_bytes+0x44
KDB: reentering
KDB: stack backtrace:
kdb_reenter() at kdb_reenter+0x5c
trap() at trap+0x2fc
-- kernel stack fault %o7=0xc00c60b0 --
db_read_bytes() at db_read_bytes+0x44
KDB: reentering
KDB: stack backtrace:
kdb_reenter() at kdb_reenter+0x5c
trap() at trap+0x2fc
-- kernel stack fault %o7=0xc00c60b0 --
db_read_bytes() at db_read_bytes+0x44
KDB: reentering
KDB: stack backtrace:
kdb_reenter() at kdb_reenter+0x5c
trap() at trap+0x2fc
-- kernel stack fault %o7=0xc00c60b0 --
db_read_bytes() at db_read_bytes+0x44
KDB: reentering
KDB: stack backtrace:
kdb_reenter() at kdb_reenter+0x5c
trap() at trap+0x2fc
-- kernel stack fault %o7=0xc00c60b0 --
db_read_bytes() at db_read_bytes+0x44
KDB: reentering
KDB: stack backtrace:
kdb_reenter() at kdb_reenter+0x5c
trap() at trap+0x2fc
-- kernel stack fault %o7=0xc00c60b0 --
db_read_bytes() at db_read_bytes+0x44
KDB: reentering
KDB: stack backtrace:
kdb_reenter() at kdb_reenter+0x5c
trap() at trap+0x2fc

that never finishes.

Please advise

Thanks

Anton