Kernel Crash in ata_pio_read

[Scot Hetzel]

On Wed, 25 Aug 2004 09:12:37 -0500, Scot Hetzel <swhetzel at gmail.com> wrote:
> I have been experiencing a problem where the computer will boot upon
> power up the first time, but a reboot of the system causes a Fatal
> trap 12.
> Powering the system off for 5-30 mins, still won't allow it to boot
> when powered up.  But, turn it off at night (12 mid), and then boot it
> up in the morning (7:30) and the first boot succeeds.
> 
> Below is a hand transcribe of the dmesg and debugger output:
> 
> ATAPI_RESET time = 330us
> ad0: 26105mb <WDC WD273BA/P78oA30A> [53040/16/63] at ata0-master BIOSPIO
> acd0: WARNING - MODE_SENSE_BIG interrupt was seen but taskqueue stalled
> acd0: WARNING - MODE_SENSE_BIG DONEDRQ non conformant device
> acd0: WARNING - MODE_SENSE_BIG read data overrun 65535>5
> acd0: WARNING no status, reselecting device
> acd0: WARNING - MODE_SENSE_BIG DONEDRQ non conformant device
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address  = 0xc14927f0
> fault code             = supervisor write, page not present
> instruction pointer    = 0x8:0xc04ba248
> stack pointer          = 0x10:0xc7a69c68
> frame pointer          = 0x10:0xc7a69c68
> 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        = 28 (swi5: clock sio)
> [thread 100000]
> stopped at    ata_pio_read+0x68: repe insw %dx,%es:(%edi)
> 
I don't experience this problem with a current 5.3 kernel that is
using the 6.0 ata driver.

Thanks for the fix.

Scot