From owner-freebsd-current@FreeBSD.ORG  Tue Nov 18 10:26:41 2003
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Date: Tue, 18 Nov 2003 10:26:40 -0800 (PST)
From: Nate Lawson <nate@root.org>
To: Andy Farkas <andyf@speednet.com.au>
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 <20031118115751.Y30811@hewey.af.speednet.com.au>
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cc: freebsd-scsi@freebsd.org
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Subject: Re: EISA Adaptec 274X SCSI panic (ISRng related)
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On Tue, 18 Nov 2003, Andy Farkas wrote:
> My EISA AHA2740's don't work no more :(
>
> # grep ahc /var/run/dmesg.boot
> ahc0: <Adaptec 274X SCSI adapter> at 0x2c00-0x2cff, irq 10 (level)
> ahc0: on eisa0 slot 2
> ahc1: <Adaptec 274X SCSI adapter> at 0x4c00-0x4cff, irq 11 (level)
> ahc1: on eisa0 slot 4
> ahc2: <Adaptec aic7880 Ultra SCSI adapter> port 0xf800-0xf8ff mem 0xf68fb000-0xf68fbfff irq 17 at device 11.0 on pci1
> ahc2: Using left over BIOS settings
> ahc3: <Adaptec aic7880 Ultra SCSI adapter> port 0xf400-0xf4ff mem 0xf68fa000-0xf68fafff irq 18 at device 12.0 on pci1
> ahc3: Using left over BIOS settings
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address	= 0x0
> fault code		= supervisor write, page not present
> instruction pointer	= 0x8:0xc0649083
> stack pointer	        = 0x10:0xd763ac5c
> frame pointer	        = 0x10:0xd763ac84
> code segment		= base 0x0, limit 0xfffff, type 0x1b
> 			= DPL 0, pres 1, def32 1, gran 1
> processor eflags	= resume, IOPL = 0
> current process		= 14 (idle: cpu0)
> kernel: type 12 trap, code=0
> Stopped at      intr_execute_handlers+0x23:     lock addl       %eax,0(%edx)
> db> tr
> intr_execute_handlers(c06d5084,d763ac9c,d763ace0,c065bbae,7) at intr_execute_handlers+0x23
> atpic_handle_intr(7) at atpic_handle_intr+0x42
> Xatpic_intr7() at Xatpic_intr7+0x1e
> --- interrupt, eip = 0xc064d655, esp = 0xd763ace0, ebp = 0xd763ace0 ---

This is almost certainly addressed by jhb's atpic patch.

-Nate