Hit the following running 2.6.33-rc2. Config available at http://swandive.no-ip.com/linux/config
[ 255.807852] BUG: unable to handle kernel paging request at 00000000000013d8
[ 255.807860] IP: [<ffffffff8135e656>] radeon_fence_signaled+0x16/0xc0
[ 255.807868] PGD 1bcb59067 PUD 1b6c89067 PMD 0
[ 255.807876] Oops: 0000 [#1] PREEMPT SMP
[ 255.807881] last sysfs file: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:08/ATK0110:00/hwmon/hwmon0/fan1_input
[ 255.807884] CPU 5
[ 255.807889] Pid: 2805, comm: X Not tainted 2.6.33-rc2 #2 Rampage II Extreme/System Product Name
[ 255.807891] RIP: 0010:[<ffffffff8135e656>] [<ffffffff8135e656>] radeon_fence_signaled+0x16/0xc0
[ 255.807895] RSP: 0018:ffff8801b6f33b78 EFLAGS: 00010286
[ 255.807897] RAX: 0000000100400004 RBX: ffff8801b6faa380 RCX: 0000000000000006
[ 255.807899] RDX: 0000000000000006 RSI: ffff8801b8f98740 RDI: 0000000000000000
[ 255.807902] RBP: ffff8801b6f33b98 R08: 0000000000000000 R09: 0000000000000001
[ 255.807904] R10: 0000000000000001 R11: 0000000000000001 R12: ffff8801bf308000
[ 255.807906] R13: ffff8801b6f33be8 R14: ffff8801bf308be0 R15: 00000000000007bb
[ 255.807908] FS: 00007f6d95c97700(0000) GS:ffff88002e400000(0000) knlGS:0000000000000000
[ 255.807910] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 255.807912] CR2: 00000000000013d8 CR3: 00000001bae72000 CR4: 00000000000006e0
[ 255.807916] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 255.807918] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 255.807921] Process X (pid: 2805, threadinfo ffff8801b6f32000, task ffff8801b8f98000)
[ 255.807923] Stack:
[ 255.807924] ffff8801bf308000 ffff8801b6faa380 ffff8801b6faa380 ffff8801bf308000
[ 255.807932] <0> ffff8801b6f33c48 ffffffff8135e900 ffff8801b8f98000 ffff8801b8f98000
[ 255.807940] <0> ffff8801b6f33c00 00ffffff815fbeb5 ffff8801000007cc 00ff8801bf308d80
[ 255.807948] Call Trace:
[ 255.807951] [<ffffffff8135e900>] radeon_fence_wait+0x200/0x3c0
[ 255.807956] [<ffffffff81083e80>] ? autoremove_wake_function+0x0/0x40
[ 255.807960] [<ffffffff8136f5cf>] radeon_ib_get+0xaf/0x210
[ 255.807964] [<ffffffff8137046f>] radeon_cs_ioctl+0x8f/0x1c0
[ 255.807968] [<ffffffff8131b893>] drm_ioctl+0x1c3/0x490
[ 255.807972] [<ffffffff81098a17>] ? __lock_acquire+0x4f7/0xb30
[ 255.807975] [<ffffffff813703e0>] ? radeon_cs_ioctl+0x0/0x1c0
[ 255.807979] [<ffffffff8108a41d>] ? sched_clock_cpu+0xcd/0x110
[ 255.807982] [<ffffffff810946ea>] ? get_lock_stats+0x2a/0x60
[ 255.807985] [<ffffffff8109472e>] ? put_lock_stats+0xe/0x30
[ 255.807988] [<ffffffff81094803>] ? lock_release_holdtime+0xb3/0x160
[ 255.807992] [<ffffffff81106318>] vfs_ioctl+0x38/0xd0
[ 255.807995] [<ffffffff811064ea>] do_vfs_ioctl+0x8a/0x5b0
[ 255.807999] [<ffffffff8127a7f9>] ? __up_read+0x99/0xc0
[ 255.808002] [<ffffffff81088ac6>] ? up_read+0x26/0x30
[ 255.808006] [<ffffffff81028bba>] ? sysret_check+0x2e/0x69
[ 255.808009] [<ffffffff81106a5a>] sys_ioctl+0x4a/0x80
[ 255.808012] [<ffffffff81028b82>] system_call_fastpath+0x16/0x1b
[ 255.808014] Code: 08 48 8d 7f 08 e8 cb 93 f1 ff 48 89 d8 48 83 c4 08 5b c9 c3 90 55 48 89 e5 48 83 ec 20 48 89 5d f0 4c 89 65 f8 48 89 fb 48 8b 3f <80> bf d8 13 00 00 00 75 61 48 85 db 74 5c 48 81 c7 30 0c 00 00
[ 255.808088] RIP [<ffffffff8135e656>] radeon_fence_signaled+0x16/0xc0
[ 255.808092] RSP <ffff8801b6f33b78>
[ 255.808094] CR2: 00000000000013d8
Cheers,
Grant
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Running Linux 2.6.33-rc2 on x86_64