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From: Tilman Linneweh <tilman@arved.de>
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Date: Sat, 27 Sep 2003 14:25:28 +0200
Subject: ATAng panic?
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Hi,
Updated my -CURRENT yesterday and got the following panic:

[...]
atapci0: <AcerLabs Aladdin UDMA33 controller> port 0xb800-0xb80f at
device 15.0 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata0: [MPSAFE]
ata1: at 0x170 irq 15 on atapci0
ata1: [MPSAFE]
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port
0x3f7,0x3f2-0x3f5 irq 6 drq 2 on acpi0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ppc0 port 0x778-0x77b,0x378-0x37f irq 7 drq 3 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/7 bytes threshold
ppbus0: <Parallel port bus> on ppc0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A, console
sio1 port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse, device ID 3
orm0: <Option ROM> at iomem 0xc0000-0xc7fff on isa0
pmtimer0 on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x100>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on
isa0
Timecounter "TSC" frequency 400910809 Hz quality 800
Timecounters tick every 10.000 msec
IPsec: Initialized Security Association Processing.
GEOM: create disk ad0 dp=0xc18eec70
ad0: 8063MB <IBM-DHEA-38451> [16383/16/63] at ata0-master UDMA33
ad0: WARNING - READ_DMA recovered from missing interrupt
GEOM: create disk ad1 dp=0xc18eee70
ad1: 19541MB <Maxtor 92041U4> [39703/16/63] at ata0-slave UDMA33
acd0: CDROM <CD-ROM 56X/AKH> at ata1-slave PIO4
Waiting 15 seconds for SCSI devices to settle
ad0: WARNING - READ_DMA recovered from missing interrupt
ad1: WARNING - READ_DMA recovered from missing interrupt
ad1: WARNING - READ_DMA recovered from missing interrupt
cd0 at sym0 bus 0 target 4 lun 0
cd0: <PLEXTOR CD-R   PX-R820T 1.06> Removable CD-ROM SCSI-2 device
cd0: 10.000MB/s transfers (10.000MHz, offset 8)
cd0: Attempt to query device size failed: NOT READY, Medium not present
- tray closed
ad1: WARNING - READ_DMA recovered from missing interrupt
Mounting root from ufs:/dev/ad0s1a
setrootbyname failed
ffs_mountroot: can't find rootvp
Root mount failed: 6

Manual root filesystem specification:
  <fstype>:<device>  Mount <device> using filesystem <fstype>
                       eg. ufs:da0s1a
  ?                  List valid disk boot devices
  <empty line>       Abort manual input

mountroot> ?
panic: Root mount failed, startup aborted.
Debugger("panic")
Stopped at      Debugger+0x54:  xchgl   %ebx,in_Debugger.0
db> where
Debugger(c041b1ac,c04a4560,c042237c,c8921c8c,100) at Debugger+0x54
panic(c042237c,c0235770,c0b80d3c,c8921d0c,c02357db) at panic+0xd5
vfs_mountroot(c04a28a0,1,c0417f4b,218,0) at vfs_mountroot+0xce
start_init(0,c8921d48,c0418c4e,314,0) at start_init+0x6b
fork_exit(c0235770,0,c8921d48) at fork_exit+0xcf
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xc8921d7c, ebp = 0 ---

A working version looks like this:

FreeBSD 5.1-CURRENT #1: Sat Aug 16 10:11:52 CEST 2003
    tilman@sauna.arved.de:/usr/obj/usr/source/CURRENT/sys/POLLY
Preloaded elf kernel "/boot/kernel.safe/kernel" at 0xc0583000.
Preloaded elf module "/boot/kernel.safe/acpi.ko" at 0xc05831fc.
Timecounter "i8254" frequency 1193182 Hz
CPU: AMD-K6(tm) 3D processor (400.91-MHz 586-class CPU)
  Origin = "AuthenticAMD"  Id = 0x58c  Stepping = 12
  Features=0x8021bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,PGE,MMX>
  AMD Features=0x80000800<SYSCALL,3DNow!>
real memory  = 134201344 (127 MB)
avail memory = 124452864 (118 MB)
K6-family MTRR support enabled (2 registers)
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <ASUS   P5A     > on motherboard
pcibios: BIOS version 2.10
Using $PIR table, 8 entries at 0xc00f0d00
acpi0: power button is handled as a fixed feature programming model.
acpi_cpu0: <CPU> port 0x530-0x537 on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib0: slot 9 INTA is routed to irq 9
pcib0: slot 11 INTA is routed to irq 10
pcib0: slot 12 INTA is routed to irq 11
pcib0: slot 13 INTA is routed to irq 9
agp0: <Ali M1541 host to AGP bridge> mem 0xe0000000-0xe3ffffff at device
0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci0: <bridge, PCI-unknown> at device 3.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
xl0: <3Com 3c905B-TX Fast Etherlink XL> port 0xd800-0xd87f mem
0xdf000000-0xdf00007f irq 9 at device 9.0 on pci0
xl0: Ethernet address: 00:50:04:33:15:8b
miibus0: <MII bus> on xl0
xlphy0: <3Com internal media interface> on miibus0
xlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
sym0: <875> port 0xd400-0xd4ff mem
0xde000000-0xde000fff,0xde800000-0xde8000ff irq 10 at device 11.0 on
pci0
sym0: No NVRAM, ID 7, Fast-20, SE, parity checking
pci0: <display, VGA> at device 12.0 (no driver attached)
rl0: <RealTek 8139 10/100BaseTX, rev. A> port 0xd000-0xd0ff mem
0xd7800000-0xd78000ff irq 9 at device 13.0 on pci0
rl0: Ethernet address: 00:e0:7d:72:6d:7e
miibus1: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus1
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
atapci0: <AcerLabs Aladdin UDMA33 controller> port 0xb800-0xb80f at
device 15.0 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port
0x3f7,0x3f2-0x3f5 irq 6 drq 2 on acpi0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ppc0 port 0x778-0x77b,0x378-0x37f irq 7 drq 3 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/7 bytes threshold
ppbus0: <Parallel port bus> on ppc0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A, console
sio1 port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse, device ID 3
orm0: <Option ROM> at iomem 0xc0000-0xc7fff on isa0
pmtimer0 on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x100>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on
isa0
Timecounter "TSC" frequency 400910258 Hz
Timecounters tick every 10.000 msec
IPsec: Initialized Security Association Processing.
ad0: 8063MB <IBM-DHEA-38451> [16383/16/63] at ata0-master UDMA33
ad1: 19541MB <Maxtor 92041U4> [39703/16/63] at ata0-slave UDMA33
acd0: CDROM <CD-ROM 56X/AKH> at ata1-slave PIO4
Waiting 15 seconds for SCSI devices to settle
Mounting root from ufs:/dev/ad0s1a
cd0 at sym0 bus 0 target 4 lun 0
cd0: <PLEXTOR CD-R   PX-R820T 1.06> Removable CD-ROM SCSI-2 device
cd0: 10.000MB/s transfers (10.000MHz, offset 8)
cd0: Attempt to query device size failed: NOT READY, Medium not present
- tray closed

Any ideas?