crash with latest audio changes

[Dave Tyson <dtyson%anduin.org.uk@localhost>]

I updated a DELL system from 7.99.39 (Oct 13th) to the latest current (Dec 
16th). When I bring up KDE the newer kernel panics in the audio code, works 
fine with older kernel. I guess this relates to the recent in-kernel mixer 
changes.

NetBSD 7.99.50 (GENERIC) #0: Fri Dec 16 13:49:41 GMT 2016
        root%dell.anduin.org.uk@localhost:/usr/obj/sys/arch/amd64/compile/GENERIC
total memory = 4060 MB
avail memory = 3922 MB
rnd: seeded with 128 bits
timecounter: Timecounters tick every 10.000 msec
Kernelized RAIDframe activated
running cgd selftest aes-xts-256 aes-xts-512 done
timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
Dell Inc. Vostro 230                    (00)
mainbus0 (root)
ACPI: RSDP 0x00000000000F96F0 000024 (v02 ACPIAM)
ACPI: XSDT 0x00000000BDD30100 00005C (v01 DELL   WN09     20100707 MSFT 
00000097)
ACPI: FACP 0x00000000BDD30290 0000F4 (v04 DELL   FACP0152 20100707 MSFT 
00000097)
ACPI: DSDT 0x00000000BDD305C0 0058F2 (v02 1AAAA  1AAAA000 00000000 INTL 
20051117)
ACPI: FACS 0x00000000BDD3E000 000040
ACPI: FACS 0x00000000BDD3E000 000040
ACPI: APIC 0x00000000BDD30390 00006C (v02 DELL   APIC0152 20100707 MSFT 
00000097)
ACPI: MCFG 0x00000000BDD30400 00003C (v01 DELL   OEMMCFG  20100707 MSFT 
00000097)
ACPI: SLIC 0x00000000BDD30440 000176 (v01 DELL   WN09     20100707 MSFT 
00000097)
ACPI: OEMB 0x00000000BDD3E040 000072 (v01 DELL   OEMB0152 20100707 MSFT 
00000097)
ACPI: HPET 0x00000000BDD3A5C0 000038 (v01 DELL   OEMHPET  20100707 MSFT 
00000097)
ACPI: GSCI 0x00000000BDD3E0C0 002024 (v01 DELL   GMCHSCI  20100707 MSFT 
00000097)
ACPI: Executed 1 blocks of module-level executable AML code
ACPI: 1 ACPI AML tables successfully acquired and loaded
ioapic0 at mainbus0 apid 2: pa 0xfec00000, version 0x20, 24 pins
cpu0 at mainbus0 apid 0
cpu0: Pentium(R) Dual-Core  CPU      E6500  @ 2.93GHz, id 0x1067a
cpu1 at mainbus0 apid 1
cpu1: Pentium(R) Dual-Core  CPU      E6500  @ 2.93GHz, id 0x1067a
acpi0 at mainbus0: Intel ACPICA 20160930
acpi0: X/RSDT: OemId <DELL  , WN09   ,20100707>, AslId <MSFT,00000097>
acpi0: MCFG: segment 0, bus 0-255, address 0x00000000e0000000
acpi0: SCI interrupting at int 9
timecounter: Timecounter "ACPI-Fast" frequency 3579545 Hz quality 1000
hpet0 at acpi0: high precision event timer (mem 0xfed00000-0xfed00400)
timecounter: Timecounter "hpet0" frequency 14318180 Hz quality 2000
MCH (PNP0C01) at acpi0 not configured
attimer1 at acpi0 (TMR, PNP0100): io 0x40-0x43 irq 0
pcppi1 at acpi0 (SPKR, PNP0800): io 0x61
spkr0 at pcppi1: PC Speaker
midi0 at pcppi1: PC speaker
sysbeep0 at pcppi1
UAR1 (PNP0501) at acpi0 not configured
pckbc1 at acpi0 (PS2K, PNP0303) (kbd port): io 0x60,0x64 irq 1
SIOR (PNP0C02) at acpi0 not configured
RMSC (PNP0C02) at acpi0 not configured
FWH (INT0800) at acpi0 not configured
FWHE (PNP0C02) at acpi0 not configured
OMSC (PNP0C02) at acpi0 not configured
PCIE (PNP0C02) at acpi0 not configured
RMEM (PNP0C01) at acpi0 not configured
acpibut0 at acpi0 (PWRB, PNP0C0C-170): ACPI Power Button
ACPI: Enabled 2 GPEs in block 00 to 1F
attimer1: attached to pcppi1
pckbd0 at pckbc1 (kbd slot)
pckbc1: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0: vendor 8086 product 2e30 (rev. 0x03)
agp0 at pchb0: G4X-family chipset
agp0: detected 32252k stolen memory
agp0: aperture at 0xd0000000, size 0x10000000
i915drmkms0 at pci0 dev 2 function 0: vendor 8086 product 2e32 (rev. 0x03)
drm: Memory usable by graphics device = 512M
drm: Supports vblank timestamp caching Rev 2 (21.10.2013).
drm: Driver supports precise vblank timestamp query.
i915drmkms0: interrupting at ioapic0 pin 16 (i915)
intelfb0 at i915drmkms0
i915drmkms0: info: registered panic notifier
intelfb0: framebuffer at 0xffff800048190000, size 1280x1024, depth 32, stride 
5120
wsdisplay0 at intelfb0 kbdmux 1: console (default, vt100 emulation), using 
wskbd0
wsmux1: connecting to wsdisplay0
hdaudio0 at pci0 dev 27 function 0: HD Audio Controller
hdaudio0: interrupting at msi0 vec 0
hdafg0 at hdaudio0: vendor 10ec product 0662
hdafg0: DAC00 2ch: Speaker [Jack]
hdafg0: DAC01 2ch: HP Out [Jack]
hdafg0: ADC02 2ch: Line In [Jack], Mic In [Jack]
hdafg0: ADC03 2ch: Mic In [Jack]
hdafg0: 2ch/2ch 44100Hz 48000Hz 96000Hz PCM16 PCM20 PCM24 AC3
audio0 at hdafg0: full duplex, playback, capture, mmap, independent
spkr1 at audio0: PC Speaker (synthesized)
ppb0 at pci0 dev 28 function 0: vendor 8086 product 27d0 (rev. 0x01)
ppb0: PCI Express capability version 1 <Root Port of PCI-E Root Complex> x1 @ 
2.5GT/s
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled, rd/line, wr/inv ok
ppb1 at pci0 dev 28 function 2: vendor 8086 product 27d4 (rev. 0x01)
ppb1: PCI Express capability version 1 <Root Port of PCI-E Root Complex> x1 @ 
2.5GT/s
pci2 at ppb1 bus 2
pci2: i/o space, memory space enabled, rd/line, wr/inv ok
bge0 at pci2 dev 0 function 0: Broadcom BCM57788 Fast Ethernet
bge0: interrupting at msi1 vec 0
bge0: HW config 000a0554, 00004004, 00000008, 00000000 00000000
bge0: ASIC BCM57780 A1 (0x57780001), Ethernet address b8:ac:6f:c3:50:df
bge0: setting short Tx thresholds
brgphy0 at bge0 phy 1: BCM57780 1000BASE-T media interface, rev. 1
brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-
FDX, auto
uhci0 at pci0 dev 29 function 0: vendor 8086 product 27c8 (rev. 0x01)
uhci0: interrupting at ioapic0 pin 23
usb0 at uhci0: USB revision 1.0
uhci1 at pci0 dev 29 function 1: vendor 8086 product 27c9 (rev. 0x01)
uhci1: interrupting at ioapic0 pin 19
usb1 at uhci1: USB revision 1.0
uhci2 at pci0 dev 29 function 2: vendor 8086 product 27ca (rev. 0x01)
uhci2: interrupting at ioapic0 pin 18
usb2 at uhci2: USB revision 1.0
uhci3 at pci0 dev 29 function 3: vendor 8086 product 27cb (rev. 0x01)
uhci3: interrupting at ioapic0 pin 16
usb3 at uhci3: USB revision 1.0
ehci0 at pci0 dev 29 function 7: vendor 8086 product 27cc (rev. 0x01)
ehci0: interrupting at ioapic0 pin 23
ehci0: EHCI version 1.0
ehci0: companion controllers, 2 ports each: uhci0 uhci1 uhci2 uhci3
usb4 at ehci0: USB revision 2.0
ppb2 at pci0 dev 30 function 0: vendor 8086 product 244e (rev. 0xe1)
pci3 at ppb2 bus 3
pci3: i/o space, memory space enabled
ichlpcib0 at pci0 dev 31 function 0: vendor 8086 product 27b8 (rev. 0x01)
timecounter: Timecounter "ichlpcib0" frequency 3579545 Hz quality 1000
ichlpcib0: 24-bit timer
tco0 at ichlpcib0: TCO (watchdog) timer configured.
tco0: Min/Max interval 1/367 seconds
piixide0 at pci0 dev 31 function 2: Intel 82801GB/GR Serial ATA/Raid 
Controller (ICH7) (rev. 0x01)
piixide0: bus-master DMA support present
piixide0: primary channel configured to native-PCI mode
piixide0: using ioapic0 pin 19 for native-PCI interrupt
atabus0 at piixide0 channel 0
piixide0: secondary channel configured to native-PCI mode
atabus1 at piixide0 channel 1
ichsmb0 at pci0 dev 31 function 3: vendor 8086 product 27da (rev. 0x01)
ichsmb0: interrupting at ioapic0 pin 19
iic0 at ichsmb0: I2C bus
isa0 at ichlpcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
acpicpu0 at cpu0: ACPI CPU
acpicpu0: C1: HLT, lat   0 us, pow     0 mW
coretemp0 at cpu0: thermal sensor, 1 C resolution, Tjmax=100
acpicpu1 at cpu1: ACPI CPU
coretemp1 at cpu1: thermal sensor, 1 C resolution, Tjmax=100
timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
IPsec: Initialized Security Association Processing.
uhub0 at usb0: vendor 8086 UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhub1 at usb1: vendor 8086 UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
atapibus0 at atabus0: 2 targets
uhub2 at usb2: vendor 8086 UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
cd0 at atapibus0 drive 1: <PLDS DVD+/-RW DH-16A6S, , YD11> cdrom removable
uhub3 at usb3: vendor 8086 UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
uhub4 at usb4: vendor 8086 EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub4: 8 ports with 8 removable, self powered
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd0 at atabus0 drive 0
wd0: <HDT722516DLA380>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 153 GB, 319120 cyl, 16 head, 63 sec, 512 bytes/sect x 321672960 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd0(piixide0:0:0): using PIO mode 4, Ultra-DMA mode 6 (Ultra/133) (using DMA)
cd0(piixide0:0:1): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using DMA)
ehci0: handing over full speed device on port 1 to uhci0
ehci0: handing over full speed device on port 2 to uhci0
pad0: outputs: 44100Hz, 16-bit, stereo
audio1 at pad0: half duplex, playback, capture
spkr2 at audio1: PC Speaker (synthesized)
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
kern.module.path=/stand/amd64/7.99.50/modules
uhidev0 at uhub0 port 1 configuration 1 interface 0
uhidev0: Logitech USB Receiver, rev 2.00/22.00, addr 2, iclass 3/1
ums0 at uhidev0: 16 buttons, W and Z dirs
wsmouse0 at ums0 mux 0
uhidev1 at uhub0 port 1 configuration 1 interface 1
uhidev1: Logitech USB Receiver, rev 2.00/22.00, addr 2, iclass 3/0
uhidev1: 17 report ids
uhid0 at uhidev1 reportid 3: input=4, output=0, feature=0
uhid1 at uhidev1 reportid 16: input=6, output=6, feature=0
uhid2 at uhidev1 reportid 17: input=19, output=19, feature=0
umass0 at uhub0 port 2 configuration 1 interface 0
umass0: vendor 058f USB Reader, rev 1.10/1.00, addr 3
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, 4 luns per target
sd0 at scsibus0 target 0 lun 0: <Generic, USB SD Reader, 1.00> disk removable
sd0: drive offline
sd1 at scsibus0 target 0 lun 1: <Generic, USB CF Reader, 1.01> disk removable
sd1: drive offline
sd2 at scsibus0 target 0 lun 2: <Generic, USB SM Reader, 1.02> disk removable
sd2: drive offline
sd3 at scsibus0 target 0 lun 3: <Generic, USB MS Reader, 1.03> disk removable
sd3: drive offline
wsdisplay0: screen 1 added (default, vt100 emulation)
wsdisplay0: screen 2 added (default, vt100 emulation)
wsdisplay0: screen 3 added (default, vt100 emulation)
wsdisplay0: screen 4 added (default, vt100 emulation)
uvm_fault(0xfffffe812361a1a0, 0x0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff80641c6f cs 8 rflags 10246 cr2 71a ilevel 0 rsp 
fffffe8040419c00
curlwp 0xfffffe8120697a40 pid 995.1 lowest kstack 0xfffffe80404162c0
panic: trap
cpu0: Begin traceback...
vpanic() at netbsd:vpanic+0x140
snprintf() at netbsd:snprintf
trap() at netbsd:trap+0xc76
--- trap (number 6) ---
audio_get_port() at netbsd:audio_get_port+0x7e
audioioctl() at netbsd:audioioctl+0x84
VOP_IOCTL() at netbsd:VOP_IOCTL+0x3b
vn_ioctl() at netbsd:vn_ioctl+0xa6
sys_ioctl() at netbsd:sys_ioctl+0x101
syscall() at netbsd:syscall+0x1df
--- syscall (number 54) ---
7f3d656e933a:
cpu0: End traceback...
7f3d656e933a:


Dropping into configure and disabling audio* is a workaround, but not really 
satisfactory. crash dump available on request.

Dave

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