Date: Fri, 22 Mar 2002 13:13:09 -0800 From: John Merryweather Cooper <john_m_cooper@yahoo.com> To: freebsd-stable@freebsd.org Subject: More on ata Trap 12 with tagged queuing enabled Message-ID: <3C9B9E65.CA168CF1@yahoo.com>
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As requested, I've recompiled my kernel (after cvsupping) with
options DDB
With tagged queuing enabled in /boot/loader.conf, I get the following
trap and trace:
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x70
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc017705c
stack pointer = 0x10:0xc02ec6fc
frame pointer = 0x10:0xc02ec720
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 = idle
iterrupt mask = net tty bio cam
kernel: type 12 trap, code=0
Stopped at tsleep+0x74: cmpl $0,0x70(%ebx)
db> trace
tsleep(c1dc8100,10,c02b6ce6,2710) at tsleep+0x74
ata_command(c1d812c,ec,0,0,0,0,2) at ata_command+0x4ed
ata_getparam(c1dc812c,ec,c1ee9c00,c1dec340,400000) at ata_getparam+0x23
ata_reinit(c1dc8100,c1dec340,c01482d4,c02ec7d0,c0179ec5) at
ata_reinit+0x1ea
ad_timeout(c1dec340,400000,0,0,ffffffff) at ad_timeout+0x122
softclock(0,10,10,10,ffffffff) at softclock+0xd1
doreti_swi() at doreti_swi+oxf
db>
I hope this helps.
jmc
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