SuperSavage/IXC 64 hassle making DRI and SELinux work together

[Daniel J Walsh]

jfrieben at freesurf.fr wrote:

>I am experimenting with DRI on my IBM Thinkpad T23 running FC4. For this
>purpose, I rebuilt M. Harris' testing X.org 6.8.99.14 package with activated
>"savage" DRI support. After starting the graphical environment, X reports
>"(II) SAVAGE(0): Direct rendering enabled" which is rather satisfactory :)
>In the beginning, "SELinux" used to be enabled by default. However, this
>lead to segmentation faults when calling applications which depend on
>OpenGL, e.g. in the case of "glxinfo". The corresponding "dmesg" entry read:
>
>"Unable to handle kernel paging request at virtual address e0c10000
>printing eip:
>e0a2e458 *pde = 1d11c067
>Oops: 0002 [#1]
>Modules linked in: nvram parport_pc lp parport autofs4 rfcomm l2cap
>bluetooth sunrpc pcmcia ipt_REJECT ipt_state ip_conntrack iptable_filter
>ip_tables ibm_acpi(U) kqemu(U) savage(U) drm(U) md5 ipv6 video button
>battery ac yenta_socket rsrc_nonstatic pcmcia_core uhci_hcd shpchp hw_random
>i2c_i801 i2c_core snd_intel8x0 snd_ac97_codec snd_seq_dummy snd_seq_oss
>snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm
>snd_timer snd soundcore snd_page_alloc e100
>mii floppy dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod
>CPU:    0
>EIP:    0060:[<e0a2e458>]    Tainted: P      VLI
>EFLAGS: 00010282   (2.6.12-1.1398_FC4)
>EIP is at savage_bci_emit_event+0x7e/0xe4 [savage]
>eax: e0c10000   ebx: c0030000   ecx: d61a6000   edx: 00000002
>esi: dacb7e00   edi: 00000135   ebp: 00000135   esp: ce70fef4
>ds: 007b   es: 007b   ss: 0068
>Process glxinfo (pid: 3338, threadinfo=ce70f000 task=d0614aa0)
>Stack: badc0ded ce70ff20 cf8740e0 dacb7e00 ce6dfa20 e0a30274 ce70ff58
>c01f7485       ce70ff58 00100100 00200200 00000003 00000000 00000003 e0a301bc
>       e0a36638       00000042 e0a1ec0f bfb111a4 00000001 d5406000 d0614aa0
>d0614aa0
>       ce556fc0Call Trace:
> [<e0a30274>] savage_bci_event_emit+0xb8/0xe6 [savage]
> [<c01f7485>] selinux_file_ioctl+0xce/0x2d9
> [<e0a301bc>] savage_bci_event_emit+0x0/0xe6 [savage]
> [<e0a1ec0f>] drm_ioctl+0x98/0x1dc [drm]
> [<e0a1eb77>] drm_ioctl+0x0/0x1dc [drm]
> [<c01931b1>] do_ioctl+0x51/0x55
> [<c01932a7>] vfs_ioctl+0x50/0x1aa
> [<c019345e>] sys_ioctl+0x5d/0x6b
> [<c0103a51>] syscall_call+0x7/0xb
>Code: e3 00 00 fe ff 81 eb 00 00 fe 3f 89 d8 0d 00 00 01 00 80 e2 02 0f 45
>d8 ba 02 00 00 00 89 f0 ff 96 2c 01 00 00 8b 86 d0 00 00 00 <89> 18 83 c0 04
>81 cf 00 00 00 98 89 38 89 e8 5b 5e 5f 5d c3 83"
>
>There is a prior entry saying:
>
>"mtrr: base(0xe4000000) is not aligned on a size(0x5000000) boundary"
>
>The curious thing is that when "SELinux" is disabled at boot time through
>option "selinux=disabled" in "", DRI works correctly. Sure, the 3D
>performance is pretty poor, but anyway. Has anybody observed this behaviour,
>too? Any clues how to make SELinux and DRI make play together peacefully?
>
>
>  
>
Are you seeing any AVC messages in /var/log/messages or 
/var/log/audit/audit.log?

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