Re: tws(4) kernel panic on boot

On 5/21/2013 5:33 AM, Konstantin Belousov wrote:
> On Mon, May 20, 2013 at 07:09:41PM -0700, Andreas Turriff wrote:
>> On migrating one of my servers to -current, I discovered that the tws
>> driver panics on boot; I will follow up with a full backtrace once I
>> have a chance to extract it. In the meantime, there is a PR about a very
>> similar error in twa - 177020. Is it possible those are related, and the
>> same sort of change needs to be made to tws?
> It is possible that the regression was in r246713, but the code is
> structured differently, and there were more tws(4) changes since then.
> You need to provide data for somebody to start looking into the problem.
I know. That's why I said, I'd follow up with more info once I can 
extract it.

The system in question is a Dell PowerEdge 840 server, 8 GiByte RAM, 
with an Intel NIC driven by em(4) and a 3Ware 9750-4i RAID controller. 
There is no src.conf

/etc/make.conf:
CPUTYPE?=core2

Error message:

LSI 3ware device driver for SAS/SATA storage controllers, version: 
10.80.00.005
tws0: <LSI 3ware SAS/SATA Storage Controller> port 0xec00-0xecff mem 
0xfe9fc000-0xfe9fffff,0xfe980000-0xfe9bffff irq 16 at device 0.0 o1
tws0: Using MSIng APIC ID to 4
panic: _bus_dmamap_load_ccb: Unsupported func code 0
cpuid = 0Version 2.0> irqs 0-23 on motherboard
KDB: enter: panic2.0> irqs 32-55 on motherboard
[ thread pid 0 tid 100000 ]
Stopped at      kdb_enter+0x3e: movq    $0,kdb_why

Backtrace

Tracing pid 0 tid 100000 td 0xffffffff81376610
kdb_enter() at kdb_enter+0x3e/frame 0xffffffff8191a340
panic() at panic+0x175/frame 0xffffffff8191a3c0
_bus_dmamap_load_ccb() at _bus_dmamap_load_ccb+0x1c3/frame 
0xffffffff8191a420
bus_dmamap_load_ccb() at bus_dmamap_load_ccb+0x91/frame 0xffffffff8191a480
tws_map_request() at tws_map_request+0x71/frame 0xffffffff8191a4c0
tws_get_param() at tws_get_param+0xdd/frame 0xffffffff8191a520
tws_display_ctlr_info() at tws_display_ctlr_info+0x38/frame 
0xffffffff8191a590
tws_init_ctlr() at tws_init_ctlr+0x6b/frame 0xffffffff8191a5b0
tws_attach() at tws_attach+0xd79/frame 0xffffffff8191a670
device_attach() at device_attach+0x396/frame 0xffffffff8191a6c0
bus_generic_attach() at bus_generic_attach+0x2d/frame 0xffffffff8191a6e0
acpi_pci_attach() at acpi_pci_attach+0x15f/frame 0xffffffff8191a730
device_attach() at device_attach+0x396/frame 0xffffffff8191a780
bus_generic_attach() at bus_generic_attach+0x2d/frame 0xffffffff8191a7a0
acpi_pcib_attach() at acpi_pcib_attach+0x24d/frame 0xffffffff8191a7f0
acpi_pcib_pci_attach() at acpi_pcib_pci_attach+0x9f/frame 0xffffffff8191a830
device_attach() at device_attach+0x396/frame 0xffffffff8191a880
bus_generic_attach() at bus_generic_attach+0x2d/frame 0xffffffff8191a8a0
acpi_pci_attach() at acpi_pci_attach+0x15f/frame 0xffffffff8191a8f0
device_attach() at device_attach+0x396/frame 0xffffffff8191a940
bus_generic_attach() at bus_generic_attach+0x2d/frame 0xffffffff8191a960
acpi_pcib_attach() at acpi_pcib_attach+0x24d/frame 0xffffffff8191a9b0
acpi_pcib_acpi_attach() at acpi_pcib_acpi_attach+0x299/frame 
0xffffffff8191aa00
device_attach() at device_attach+0x396/frame 0xffffffff8191aa50
bus_generic_attach() at bus_generic_attach+0x2d/frame 0xffffffff8191aa70
acpi_attach() at acpi_attach+0xdd6/frame 0xffffffff8191ab30
device_attach() at device_attach+0x396/frame 0xffffffff8191ab80
bus_generic_attach() at bus_generic_attach+0x2d/frame 0xffffffff8191aba0
nexus_acpi_attach() at nexus_acpi_attach+0x76/frame 0xffffffff8191abd0
device_attach() at device_attach+0x396/frame 0xffffffff8191ac20
bus_generic_new_pass() at bus_generic_new_pass+0xe9/frame 0xffffffff8191ac50
bus_set_pass() at bus_set_pass+0x8f/frame 0xffffffff8191ac80
configure() at configure+0xa/frame 0xffffffff8191ac90
mi_startup() at mi_startup+0x118/frame 0xffffffff8191acb0
btext() at btext+0x2c