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Re: kern/40945: system process locked at 100% CPU

The following reply was made to PR kern/40945; it has been noted by GNATS.

From: okay_awright <>
Subject: Re: kern/40945: system process locked at 100% CPU
Date: Thu, 07 May 2009 16:38:33 +0200

 I haven't pinpointed the actual cause, here's the full conf of the
 working kernel setup:
 include "arch/amd64/conf/std.amd64"
 options         INCLUDE_CONFIG_FILE    
 ident           "$Revision: 280409-1$"
 maxusers        128           
 options         CPURESET_DELAY=500
 options         RTC_OFFSET=0   
 options         NTP            
 options         KTRACE         
 options         SYSVMSG        
 options         SYSVSEM        
 options         SYSVSHM        
 options         MODULAR        
 options         USERCONF       
 options         SYSCTL_INCLUDE_DESCR   
 options         ENHANCED_SPEEDSTEP
 options         BUFQ_PRIOCSCAN
 makeoptions     COPTS="-O2 -fno-omit-frame-pointer"
 options         COMPAT_NETBSD32
 options         COMPAT_LINUX
 options         COMPAT_LINUX32 
 options         EXEC_ELF32
 options         COMPAT_BSDPTY  
 file-system     FFS            
 file-system     LFS            
 file-system     MFS            
 file-system     NFS            
 file-system     CD9660         
 file-system     MSDOSFS        
 file-system     FDESC          
 file-system     KERNFS         
 file-system     NULLFS         
 file-system     OVERLAY        
 file-system     PROCFS         
 file-system     UMAPFS         
 file-system     PTYFS          
 file-system     TMPFS          
 options         QUOTA          
 options         WAPBL          
 options         NFSSERVER      
 options         GATEWAY        
 options         INET           
 options         INET6          
 options         MROUTING       
 options         PFIL_HOOKS     
 options         IPFILTER_LOG   
 options         IPFILTER_LOOKUP
 options         IPFILTER_DEFAULT_BLOCK 
 options         RANDOM_IP_ID
 options         SCSIVERBOSE    
 options         WSEMUL_VT100           
 options         WS_KERNEL_FG=WSCOL_GREEN
 options         WSDISPLAY_COMPAT_PCVT          
 options         WSDISPLAY_COMPAT_SYSCONS       
 options         WSDISPLAY_COMPAT_USL           
 options         WSDISPLAY_COMPAT_RAWKBD        
 config          netbsd  root on ? type ?
 ipmi0           at mainbus?
 acpi0           at mainbus0
 options         ACPI_SCANPCI           
 options         MPBIOS                 
 options         MPBIOS_SCANPCI         
 options         VGA_POST               
 hpet*           at acpi?               
 pckbc*          at acpi?               
 pci*    at mainbus? bus ?
 pci*    at pchb? bus ?
 pci*    at ppb? bus ?
 pchb*   at pci? dev ? function ?       
 pcib*   at pci? dev ? function ?       
 ppb*    at pci? dev ? function ?       
 ichlpcib* at pci? dev ? function ?     
 agp*    at pchb?
 isa0    at ichlpcib?
 pckbd*          at pckbc?              
 vga*            at pci? dev ? function ?
 wsdisplay*      at vga? console ?
 wsdisplay*      at wsemuldisplaydev?
 wskbd*          at pckbd? console ?
 com0    at isa? port 0x3f8 irq 4       
 com1    at isa? port 0x2f8 irq 3
 options         INTEL_CORETEMP
 scsibus* at scsi?
 sd*     at scsibus? target ? lun ?     
 st*     at scsibus? target ? lun ?     
 cd*     at scsibus? target ? lun ?     
 ch*     at scsibus? target ? lun ?     
 ses*    at scsibus? target ? lun ?     
 uk*     at scsibus? target ? lun ?     
 piixide* at pci? dev ? function ?      
 atabus* at ata?
 wd*     at atabus? drive ? flags 0x0000
 atapibus* at atapi?
 cd*     at atapibus? drive ? flags 0x0000      
 sd*     at atapibus? drive ? flags 0x0000      
 st*     at atapibus? drive ? flags 0x0000      
 uk*     at atapibus? drive ? flags 0x0000      
 re*     at pci? dev ? function ?       
 rgephy* at mii? phy ?                  
 ehci*   at pci? dev ? function ?       
 uhci*   at pci? dev ? function ?       
 usb*    at ehci?
 usb*    at uhci?
 uhub*   at usb?
 uhub*   at uhub? port ?
 uhidev* at uhub? port ? configuration ? interface ?
 ukbd*   at uhidev? reportid ?
 wskbd*  at ukbd? console ? mux 1
 uhid*   at uhidev? reportid ?
 umass*  at uhub? port ? configuration ? interface ?
 cinclude "arch/amd64/conf/GENERIC.local"
 pseudo-device   crypto                 
 pseudo-device   swcrypto               
 pseudo-device   bio                    
 pseudo-device   ccd             4      
 pseudo-device   cgd             4      
 pseudo-device   raid            8      
 options         RAID_AUTOCONFIG        
 pseudo-device   fss             4      
 pseudo-device   md              1      
 options         MEMORY_DISK_HOOKS      
 options         MEMORY_DISK_DYNAMIC    
 pseudo-device   vnd                    
 pseudo-device   bpfilter               
 pseudo-device   ipfilter               
 pseudo-device   loop                   
 pseudo-device   ppp                    
 pseudo-device   tun                    
 pseudo-device   tap                    
 pseudo-device   gre                    
 pseudo-device   gif                    
 pseudo-device   stf                    
 pseudo-device   vlan                   
 pseudo-device   bridge                 
 pseudo-device   accf_data              
 pseudo-device   accf_http              
 pseudo-device   pty                    
 pseudo-device   rnd                    
 pseudo-device   clockctl               
 pseudo-device   ksyms                  
 pseudo-device   lockstat               
 pseudo-device   wsmux                  
 pseudo-device   wsfont
 pseudo-device   drvctl
 options         FILEASSOC              
 pseudo-device   veriexec                1
 options         PAX_MPROTECT=0         
 options         PAX_ASLR=0
 P.S. On a side note, I must admit I'm really amazed by the new
 improvements within NetBSD 5 - I've only recently upgraded from version
 2. Rock on.
 David Holland a écrit :
 > The following reply was made to PR kern/40945; it has been noted by GNATS.
 > From: David Holland <>
 > To:
 > Cc: 
 > Subject: Re: kern/40945: system process locked at 100% CPU
 > Date: Wed, 6 May 2009 22:39:14 +0000
 >  On Mon, May 04, 2009 at 03:30:05PM +0000, okay_awright wrote:
 >   >  The bug is still present in the final 5.0 release.
 >   >  The only workaround I was able to find (I'm no kernel hacker or ACPI
 >   >  expert) is to disable every Intel sensor device within the kernel, then
 >   >  the problem disappears and the system process remains idle. Something
 >   >  may be broken or incomplete within the new envsys 2, for information the
 >   >  problem did not appear in the previous (4.0) distribution.
 >  Which drivers specifically do you need to disable? (And do you need to
 >  disable all of them or is there just one that's really causing the
 >  problem? I'd expect the latter.)
 >  -- 
 >  David A. Holland

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