kern/46321: radeondrm generates invalid sysctl

[paul%whooppee.com@localhost]

>Number:         46321
>Category:       kern
>Synopsis:       radeondrm generates invalid sysctl
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Apr 10 17:30:00 +0000 2012
>Originator:     Paul Goyette
>Release:        NetBSD 6.99.2
>Organization:
-------------------------------------------------------------------------
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:       |
| Customer Service | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com    |
| Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette at juniper.net |
| Kernel Developer |                          | pgoyette at netbsd.org  |
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>Environment:
        
        
System: NetBSD screamer.whooppee.com 6.99.2 NetBSD 6.99.2 (WHOOPPEE (shared) 
2012-02-19 03:27:19) #0: Thu Mar 15 10:16:30 PDT 2012 
paul%screamer.whooppee.com@localhost:/build/netbsd-old/obj/amd64/sys/arch/amd64/compile/WHOOPPEE
 amd64
Architecture: x86_64
Machine: amd64
>Description:
        With the radeondrm module loaded, sysctl(8) dumps core.

        This has also been reported on NetBSD 5.1.
        
>How-To-Repeat:
{103} sysctl hw.dri
        hw.dri.card0.name = radeon pci:0001:05:00.0
        hw.dri.card0.vm = radeon pci:0001:05:00.0
        slot offset             size       type flags address            mtrr
           0 0xffff80003f767000 0x00002000  SHM  0x20 0xffff80003f767000 no
           1 0x00000000fbfe0000 0x00010000  REG  0x02 0xffff80023d120000 no
           2 0x00000000d0000000 0x0fff0000   FB  0x10 0x0000000000000000 no
           3 0xffff80023d130000 0x00101000   SG  0x0e 0xffff80023d130000 no
           4 0xffff80023d231000 0x00001000   SG  0x0e 0xffff80023d231000 no
           5 0xffff80023d232000 0x00200000   SG  0x00 0xffff80023d232000 no
           6 0xffff80023d432000 0x01c80000   SG  0x00 0x0000000000000000 no

        hw.dri.card0.clients = radeon pci:0001:05:00.0
        slot offset             size       type flags address            mtrr
           0 0xffff80003f767000 0x00002000  SHM  0x20 0xffff80003f767000 no
           1 0x00000000fbfe0000 0x00010000  REG  0x02 0xffff80023d120000 no
           2 0x00000000d0000000 0x0fff0000   FB  0x10 0x0000000000000000 no
           3 0xffff80023d130000 0x00101000   SG  0x0e 0xffff80023d130000 no
           4 0xffff80023d231000 0x00001000   SG  0x0e 0xffff80023d231000 no
           5 0xffff80023d232000 0x00200000   SG  0x00 0xffff80023d232000 no
           6 0xffff80023d432000 0x01c80000   SG  0x00 0x0000000000000000 no

        a dev   pid    uid      magic     ioctls
        y   0   472     0          1 1424632917
        y   0   912  1000          2         16
        y   0  1013  1000          3         16
        y   0  1019  1000          4         16
        y   0  6736  1000          5         16
        y   0 25818  1000          6         16
        y   0 21693  1000          7         16
        y   0  9625  1000          8         16
        y   0 26860  1000          9         16
        y   0  9543  1000         10         16
        y   0 23446  1000        
        Segmentation fault (core dumped)
        
>Fix:
        

>Unformatted: