[Bug 31052] drm radeon modesetting enabled hits Linux kernel BUG null pointer

Sat Oct 23 16:48:00 PDT 2010

https://bugs.freedesktop.org/show_bug.cgi?id=31052

--- Comment #2 from Chris <bitbytebit at gmail.com> 2010-10-23 16:48:00 PDT ---
Now I've confirmed it has nothing to do with the AVGA card special bios, this
occurs if I flash that to be a normal Radeon HD 2600 and also on a Radeon HD
4350 pcie card too.  Log below of the 4350 doing this....

[drm] Initialized drm 1.1.0 20060810
[drm] radeon kernel modesetting enabled.
radeon 0000:01:00.0: setting latency timer to 64
[drm] initializing kernel modesetting (RV710 0x1002:0x954F).
[drm] register mmio base: 0xE0A00000
[drm] register mmio size: 65536
ATOM BIOS: RV710
radeon 0000:01:00.0: VRAM: 512M 0x00000000 - 0x1FFFFFFF (512M used)
radeon 0000:01:00.0: GTT: 512M 0x20000000 - 0x3FFFFFFF
[drm] Detected VRAM RAM=512M, BAR=256M
[drm] RAM width 64bits DDR
[TTM] Zone  kernel: Available graphics memory: 512964 kiB.
[TTM] Initializing pool allocator.
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffffa0397101>] ttm_bo_init_mm+0x81/0x120 [ttm]
PGD 3ce1b067 PUD 3dafb067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
last sysfs file: /sys/devices/platform/r600_cp.0/firmware/r600_cp.0/loading
CPU 1
Modules linked in: radeon(+) ttm drm_kms_helper drm agpgart hwmon i2c_algo_bit
ipv6 nfsd snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss
snd_mixer_oss ath9k mac80211 snd_hda_codec_atihdmi snd_hda_codec_realtek
ath9k_common ath9k_hw ath snd_hda_intel snd_hda_codec cfg80211 snd_pcm rfkill
rtc_cmos hid_logitech floppy pcspkr rtc_core snd_timer rtc_lib snd led_class
soundcore snd_page_alloc tg3 libphy e1000 nfs lockd sunrpc jfs raid10 raid456
async_raid6_recov async_memcpy async_pq raid6_pq async_xor xor async_tx raid1
raid0 dm_snapshot dm_crypt dm_mirror dm_region_hash dm_log dm_mod
scsi_wait_scan sl811_hcd usbhid ohci_hcd uhci_hcd usb_storage ehci_hcd usbcore
aic94xx libsas lpfc qla2xxx megaraid_sas megaraid_mbox megaraid_mm megaraid
aacraid sx8 DAC960 cciss 3w_9xxx 3w_xxxx mptsas scsi_transport_sas mptfc
scsi_transport_fc mptspi mptscsih mptbase atp870u dc395x qla1280 dmx3191d
sym53c8xx gdth advansys initio BusLogic arcmsr aic7xxx aic79xx
scsi_transport_spi sg pdc_adma sata_mv ahci libahci sata_qstor sata_vsc
sata_uli sata_sis sata_sx4 sata_nv sata_via sata_svw sata_sil24 sata_sil
sata_promise pata_sis [last unloaded: drm]

Pid: 11916, comm: modprobe Not tainted 2.6.36 #1 0A68h/HP xw4400 Workstation
RIP: 0010:[<ffffffffa0397101>]  [<ffffffffa0397101>] ttm_bo_init_mm+0x81/0x120
[ttm]
RSP: 0018:ffff88003ef83b68  EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff88003eaaa510 RCX: ffff88003f3f3e10
RDX: 0000000000000000 RSI: 0000000000020000 RDI: ffff88003eaaa5c8
RBP: ffff88003ef83ba8 R08: 0000000000000000 R09: ffff88003f3f3e00
R10: 0000000000000000 R11: dead000000200200 R12: 0000000000000002
R13: 0000000000000002 R14: ffff88003eaaa5a0 R15: ffff88003eaaa5c8
FS:  00007f167cf28700(0000) GS:ffff880001680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 000000003f3c7000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process modprobe (pid: 11916, threadinfo ffff88003ef82000, task
ffff88003faa4930)
Stack:
 ffff880000000000 0000000000020000 0000000000400025 ffff88003eaaa000
<0> ffff88003eaaa510 00000000fffffff4 0000000000400025 0000000000000000
<0> ffff88003ef83be8 ffffffffa0af2786 ffff88003ef83be8 ffff88003eaaa000
Call Trace:
 [<ffffffffa0af2786>] radeon_ttm_init+0x116/0x440 [radeon]
 [<ffffffffa0af343e>] radeon_bo_init+0x7e/0x90 [radeon]
 [<ffffffffa0b3c8cc>] rv770_init+0x10c/0x2b0 [radeon]
 [<ffffffffa0adc4c2>] radeon_device_init+0x332/0x490 [radeon]
 [<ffffffffa0addd32>] radeon_driver_load_kms+0xa2/0x180 [radeon]
 [<ffffffffa0797fb0>] drm_get_pci_dev+0x180/0x2a0 [drm]
 [<ffffffffa0b6580e>] radeon_pci_probe+0x10/0x271 [radeon]
 [<ffffffff8122b132>] local_pci_probe+0x12/0x20
 [<ffffffff8122bac0>] pci_device_probe+0x80/0xb0
 [<ffffffff812a6dfa>] ? driver_sysfs_add+0x7a/0xb0
 [<ffffffff812a6f3d>] driver_probe_device+0x8d/0x1a0
 [<ffffffff812a7050>] ? __driver_attach+0x0/0xa0
 [<ffffffff812a70e3>] __driver_attach+0x93/0xa0
 [<ffffffff812a7050>] ? __driver_attach+0x0/0xa0
 [<ffffffff812a6648>] bus_for_each_dev+0x68/0x90
 [<ffffffff812a6d79>] driver_attach+0x19/0x20
 [<ffffffff812a5f28>] bus_add_driver+0x1d8/0x270
 [<ffffffffa04a1000>] ? radeon_init+0x0/0xc1 [radeon]
 [<ffffffff812a73d8>] driver_register+0x78/0x140
 [<ffffffffa04a1000>] ? radeon_init+0x0/0xc1 [radeon]
 [<ffffffff8122bd71>] __pci_register_driver+0x51/0xd0
 [<ffffffffa04a1000>] ? radeon_init+0x0/0xc1 [radeon]
 [<ffffffffa079819f>] drm_pci_init+0xcf/0xe0 [drm]
 [<ffffffffa04a1000>] ? radeon_init+0x0/0xc1 [radeon]
 [<ffffffffa0790953>] drm_init+0x53/0x70 [drm]
 [<ffffffffa04a10bf>] radeon_init+0xbf/0xc1 [radeon]
 [<ffffffff810001de>] do_one_initcall+0x3e/0x170
 [<ffffffff8106a912>] sys_init_module+0xb2/0x200
 [<ffffffff810023ab>] system_call_fastpath+0x16/0x1b
Code: ff 50 10 89 c2 85 c0 75 59 49 89 5e 28 45 85 e4 74 22 48 83 7d c8 00 0f
84 8b 00 00 00 49 8b 46 50 48 8b 75 c8 89 55 c0 4c 89 ff <ff> 10 8b 55 c0 85 c0
75 46 4b 8d 4c ed 00 48 c1 e1 03 48 8d 04
RIP  [<ffffffffa0397101>] ttm_bo_init_mm+0x81/0x120 [ttm]
 RSP <ffff88003ef83b68>
CR2: 0000000000000000
---[ end trace ac441a0c39e96a14 ]---

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