Re: port-i386/37982: i486DX system panics while probing for NPX on isa bus

[christos%zoulas.com@localhost (Christos Zoulas)]

The following reply was made to PR port-i386/37982; it has been noted by GNATS.

From: christos%zoulas.com@localhost (Christos Zoulas)
To: gnats-bugs%NetBSD.org@localhost, port-i386-maintainer%netbsd.org@localhost, 
        gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-i386/37982: i486DX system panics while probing for NPX on isa 
bus
Date: Fri, 8 Feb 2008 12:45:05 -0500

 On Feb 8,  4:30pm, jarle%uninett.no@localhost (jarle%uninett.no@localhost) 
wrote:
 -- Subject: port-i386/37982: i486DX system panics while probing for NPX on is
 
 | >Number:         37982
 | >Category:       port-i386
 | >Synopsis:       i486DX system panics while probing for NPX on isa bus
 | >Confidential:   no
 | >Severity:       serious
 | >Priority:       high
 | >Responsible:    port-i386-maintainer
 | >State:          open
 | >Class:          sw-bug
 | >Submitter-Id:   net
 | >Arrival-Date:   Fri Feb 08 16:30:00 +0000 2008
 | >Originator:     Jarle Greipsland
 | >Release:        NetBSD -current
 | >Organization:
 |      
 | >Environment:
 |      
 |      
 | System: NetBSD 4.99.53
 | Architecture: i386
 | Machine: i386
 | >Description:
 | I just compiled a custom -current kernel for my i486DX2-based system, and
 | when I tried to boot it it panicked during the autoconfigure stage.  The
 | ten finger console log is:
 | 
 | panic: idt_vec_reserve: failed to reserve vec 45
 | Stopped in pid 0.1 (system) at netbsd:breakpoint+0x4: popl  %ebp
 | db> trace
 | breakpoint(...)
 | panic(...)
 | idt_vec_reserve(2d,f0,0,0,0) at netbsd:idt_vec_reserve+0x39
 | npxprobe1(0,f0,d,0,c043a9ec) at netbsd:npxprobe1+0x1aa
 | npx_isa_probe(...) at netbsd:npx_isa_probe+0x7e
 | isasearch(...)
 | mapply(...)
 | config_search(...)
 | isarescan(...)
 | isaattach(...)
 | config_attach_loc(...)
 | config_found_ia(...)
 | mainbus_attach(...)
 | config_attach_loc(...)
 | config_attach(...)
 | config_rootfound(...)
 | cpu_configure(...)
 | configure(...)
 | main(...)
 
 Try this:
 Index: npx.c
 ===================================================================
 RCS file: /cvsroot/src/sys/arch/i386/isa/npx.c,v
 retrieving revision 1.125
 diff -u -u -r1.125 npx.c
 --- npx.c      20 Jan 2008 21:49:57 -0000      1.125
 +++ npx.c      8 Feb 2008 17:44:14 -0000
 @@ -273,7 +273,6 @@
  
        irqmask = i8259_setmask(irqmask);
  
 -      idt_vec_reserve(NRSVIDT + irq);
        idt[NRSVIDT + irq] = save_idt_npxintr;
  
        idt[16] = save_idt_npxtrap;
 
 We should not reserve the vector since we are not using it after the probe.
 
 christos