kernel panic with pccard insert on recent 7.0 CURRENT

[M. Warner Losh]

In message: <20070617024935.GU4602 at funkthat.com>
            John-Mark Gurney <gurney_j at resnet.uoregon.edu> writes:
: Warner Losh wrote this message on Sat, Jun 16, 2007 at 17:33 -0600:
: > Also, I'm unclear on the difference between FILTER_STRAY and
: > FILTER_HANDLED.
: 
: The interrupt filter is suppose to return one of FILTER_STRAY or
: FILTER_HANDLED...  If you _HANDLED it return that, otherwise return
: _STRAY...  If you need to schedule the ithread, return _HANDLED or'd
: with _SCHEDULE_THREAD...

Will _HANDLED cause all the other handlers to not get called, or just
the stray interrupt code from not happening?

: I thought piso fixed the comments, but apparently he hasn't (or hasn't
: finished committing the patch that includes the comment fixes)...  The
: comments in bus.h are incorrect...
: 
: > In message: <626eb4530706160525o54234621s2de098e64cdeb4fe at mail.gmail.com>
: >             "Hidetoshi Shimokawa" <simokawa at freebsd.org> writes:
: > : I think the following patch fix the problem.
: > : 
: > : RCS file: /home/ncvs/src/sys/dev/pccard/pccard.c,v
: > : retrieving revision 1.118
: > : diff -u -r1.118 pccard.c
: > : --- pccard.c    31 May 2007 19:29:20 -0000      1.118
: > : +++ pccard.c    16 Jun 2007 12:23:35 -0000
: > : @@ -1238,7 +1238,7 @@
: > :         if (pf->intr_filter != NULL || pf->intr_handler != NULL)
: > :                 panic("Only one interrupt handler per function allowed");
: > :         err = bus_generic_setup_intr(dev, child, irq, flags, pccard_filter,
: > : -           pccard_intr, pf, cookiep);
: > : +           intr ? pccard_intr : NULL, pf, cookiep);
: > :         if (err != 0)
: > :                 return (err);
: > :         pf->intr_filter = filt;
: > : 
: > : 
: > : On 6/16/07, ?????? <wsk at gddsn.org.cn> wrote:
: > : > hi, lists
: > : > i always get Fatal trap while insert a pccard with recent 7.0 current.
: > : > It seems that Can't recognize the pccard address?
: > : > thanks with any reply.
: > : >
: > : > pccard0:Allocation failed for cfe 13
: > : > pccard0:Allocation failed for cfe 21
: > : > uart0: <Bora Telecom Inc Bora 3600 Rev 1.1> at port 0x3e8-0x3ef irq 11
: > : > function 0 config 29 on pccard0
: > : > uart0:[FILTER]
: > : >
: > : > Fatal trap 12: page fault while in kernel mode
: > : > cpuid = 0; apic id = 00
: > : > fault virtual address = 0x0
: > : > fault code = supervisor read, page not present
: > : > instruction pointer = 0x20:0x0
: > : > stack pointer = 0x28:0xe2996cb0
: > : > frame pointer = 0x28:0xe2996cb8
: > : > code segment = base 0x0, limit 0xfffff, type 0x1b
: > : > = DPL 0, pres 1, def32 1, gran 1
: > : > processor eflags = interrupt enable, resume, IOPL = 0
: > : > current process = 21 (irq11: cbb0 cbb1+*)
: > : > [thread pid 21 tid 100013 ]
: > : > Stopped at 0: *** error reading from address 0 ***
: > : > db>bt
: > : > Tracing pid 21 tid 100013 td 0xc3f05c00
: > : > pccard_intr(c4285e00) at pccard_intr+0x12
: > : > cbb_func_intr(c4103140,0,c0a493ae,40b,c3f00064,...) at cbb_func_intr|0x51
: > : > ithread_loop(c404fab0,e2996d38,83fb5be8,ff06fc46,c3f4b804,...) at
: > : > ithread_loop+0
: > : > x1b5
: > : > fork_exit(c074ccd0,c404fab0,e2996d38) at fork_exit+0x57
: > : > fork_trampoline() at fork_trampoline+0x8
: > : > --- trap 0, eip = 0, esp = 0xe2996d70, ebp = 0 ---
: 
: -- 
:   John-Mark Gurney				Voice: +1 415 225 5579
: 
:      "All that I will do, has been done, All that I have, has not."
: 
: