Date: Thu, 14 Jan 1999 14:02:24 +1030 (CST) From: "Daniel O'Connor" <doconnor@lot.gsoft.com.au> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/9482: cdrecord fails under -current (12/Jan/99) (panic) Message-ID: <199901140332.OAA08095@lot.gsoft.com.au>
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>Number: 9482
>Category: kern
>Synopsis: cdrecord fails under -current (12/Jan/99) (panic)
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Jan 13 19:40:01 PST 1999
>Closed-Date:
>Last-Modified:
>Originator: Daniel O'Connor
>Release: FreeBSD 2.2.7-STABLE i386
>Organization:
Genesis Software
>Environment:
A 3.0-current made on the 12th of January.
cdrecord compiled under 2.2.7+CAM and a recompiled version for 3.0
This is a Supermicro P6SBS (BX) which has a 7895 SCSI controller on the mobo.
The CDR is a Matsushita CW-7502 which works fine on a 2.2.7r+-CAM system.
>Description:
The 2.2.7+CAM causes the machine to hang and then panic.
The CDR is ID 6, and when I run cdrecord -scanbus I get this from the kernel ->
(This happens when it gets to the 6th device, the CDR)
(pass0:ahc0:0:6:0): SCB 0x6 - timed out in command phase, SCSISIGI == 0x96
SEQADDR == 0x7d
SSTAT1 == 0x3
(pass0:ahc0:0:6:0): no longer in timeout, status = 34b
ahc0: Issued Channel A Bus Reset. 1 SCBs aborted
panic: ahc0: brkadrint, (null) at seqaddr = 0x0
(this has happened twice, last time seqaddr was 0x1)
The recompiled version of cdrecord gets the following (immediate panic) ->
(gdb -k from the crash dump)
IdlePTD 2846720
initial pcb at 24fe50
panicstr: from debugger
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x4
fault code = supervisor read, page not present
instruction pointer = 0x8:0xf011ae54
stack pointer = 0x10:0xf4583b64
frame pointer = 0x10:0xf4583b68
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 373 (cdrecord)
interrupt mask =
panic: from debugger
panic: from debugger
dumping to dev 20001, offset 278528
dump 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39
38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12
11 10 9 8 7 6 5 4 3 2 1
---
#0 0xf014c947 in boot ()
(kgdb) where
#0 0xf014c947 in boot ()
#1 0xf014cbe5 in panic ()
#2 0xf012aef1 in db_panic ()
#3 0xf012ae91 in db_command ()
#4 0xf012af56 in db_command_loop ()
#5 0xf012d2a7 in db_trap ()
#6 0xf01f50fe in kdb_trap ()
#7 0xf01ff31c in trap_fatal ()
#8 0xf01feffb in trap_pfault ()
#9 0xf01fec4a in trap ()
#10 0xf011ae54 in xpt_path_comp ()
#11 0xf0119990 in xpt_action ()
#12 0xf0118220 in xptioctl ()
#13 0xf0179c6f in spec_ioctl ()
#14 0xf0179581 in spec_vnoperate ()
#15 0xf01d8519 in ufs_vnoperatespec ()
#16 0xf0174469 in vn_ioctl ()
#17 0xf015694c in ioctl ()
#18 0xf01ff59f in syscall ()
#19 0xf01f5a4c in Xint0x80_syscall ()
#20 0x8051351 in ?? ()
#21 0x80491f2 in ?? ()
#22 0x8048fe1 in ?? ()
>How-To-Repeat:
run cdrecord -scanbus on a 3.0 machine with a CDR attached
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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