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Subject[BUG] ide-scsi in 2.4.20-pre2-ac3
Hello,

I've been using successfully the last 2.4.19-rcX-ac series but when i
switched to the last 2.4.20-pre2-ac3, i got problems with the ide-scsi
module. It was reseting all the time and i had to reboot.

Hardware :

[root@leloo] # hdparm -iv /dev/hdc

/dev/hdc:
HDIO_GET_MULTCOUNT failed: Input/output error
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
BLKRAGET failed: Input/output error
HDIO_GETGEO failed: Invalid argument

Model=SONY DVD-ROM DDU1211, FwRev=IYH1, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=yes, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no

[root@leloo] # cat /proc/cmdline
quiet hdc=ide-scsi hdd=ide-scsi root=/dev/hda2 idebus=66

What happens :

When using transcode to access my dvd drive (hdc) for an encoding
session, the ide-scsi module tells me that there's a timeout and it
must reset the bus. When i switch back to a previous 2.4.19-rc ac
series kernel, all works fine.

Here's the log when starting the transcode program :

Aug 17 21:31:30 leloo kernel: Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
Aug 17 21:31:30 leloo kernel: Attached scsi CD-ROM sr1 at scsi0, channel 0, id 1, lun 0
Aug 17 21:31:30 leloo kernel: sr0: scsi3-mmc drive: 0x/40x cd/rw xa/form2 cdda tray
Aug 17 21:31:30 leloo kernel: Uniform CD-ROM driver Revision: 3.12
Aug 17 21:31:30 leloo kernel: sr1: scsi3-mmc drive: 32x/32x writer cd/rw xa/form2 cdda tray
Aug 17 21:31:30 leloo kernel: kernel BUG in header file at line 157
Aug 17 21:31:30 leloo kernel: kernel BUG at panic.c:286!
Aug 17 21:31:30 leloo kernel: invalid operand: 0000
Aug 17 21:31:30 leloo kernel: CPU: 0
Aug 17 21:31:30 leloo kernel: EIP: 0010:[<c01194c7>] Tainted: P
Aug 17 21:31:30 leloo kernel: EFLAGS: 00010282
Aug 17 21:31:30 leloo kernel: eax: 00000026 ebx: 00000000 ecx: 00000001 edx: c4d6e0a4
Aug 17 21:31:30 leloo kernel: esi: 00000000 edi: 00001000 ebp: 00000000 esp: c5289d08
Aug 17 21:31:30 leloo kernel: ds: 0018 es: 0018 ss: 0018
Aug 17 21:31:30 leloo kernel: Process tcprobe (pid: 5933, stackpage=c5289000)
Aug 17 21:31:30 leloo kernel: Stack: c01e8c60 0000009d c01894c1 0000009d 00000000 00000014 00000028 00000002
Aug 17 21:31:30 leloo kernel: d7ec0000 d7ec3000 c0267180 00000000 d4fa2e00 c01896ac c02670d0 d4fa2e00
Aug 17 21:31:30 leloo kernel: d7ec2180 00000000 c02670d0 c02670d0 c0267180 d4fa2e00 d4fa2e00 c0189bc7
Aug 17 21:31:30 leloo kernel: Call Trace: [<c01894c1>] [<c01896ac>] [<c0189bc7>] [<d8840c41>] [<c01858c1>]
Aug 17 21:31:30 leloo kernel: [<c0185a3b>] [<c0186100>] [<d8841661>] [<d8831642>] [<d88372a0>] [<d8837010>]
Aug 17 21:31:30 leloo kernel: [<d8838d4e>] [<d99e4720>] [<c017c4d6>] [<c011e7da>] [<c014039f>] [<c012bc5d>]
Aug 17 21:31:30 leloo kernel: [<c012c66e>] [<c012ca10>] [<c012cb58>] [<c012ca10>] [<c013bce3>] [<c01090bf>]
Aug 17 21:31:30 leloo kernel:
Aug 17 21:31:30 leloo kernel: Code: 0f 0b 1e 01 99 86 1e c0 90 eb fe 8d b4 26 00 00 00 00 8d bc
Aug 17 21:32:00 leloo kernel: scsi : aborting command due to timeout : pid 19, scsi0, channel 0, id 0, lun 0 0x28 00 00 00 01 00 00 00 04 00
Aug 17 21:32:00 leloo kernel: scsi : aborting command due to timeout : pid 20, scsi0, channel 0, id 0, lun 0 0x00 00 00 00 00 00
Aug 17 21:32:30 leloo kernel: scsi : aborting command due to timeout : pid 19, scsi0, channel 0, id 0, lun 0 0x28 00 00 00 01 00 00 00 04 00
Aug 17 21:32:30 leloo kernel: SCSI host 0 abort (pid 19) timed out - resetting
Aug 17 21:32:30 leloo kernel: SCSI bus is being reset for host 0 channel 0.

Then the 4 last lines were repeated until the reboot. I'm sorry bit i had not System.map to map the call to symbol names

--
Edouard Gomez
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