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List: dri-devel
Subject: [Bug 17201] New: Kernel NULL pointer dereference in
From: bugzilla-daemon () bugzilla ! kernel ! org
Date: 2010-08-28 19:50:02
Message-ID: bug-17201-2300 () https ! bugzilla ! kernel ! org/
[Download RAW message or body]
https://bugzilla.kernel.org/show_bug.cgi?id=17201
Summary: Kernel NULL pointer dereference in
r600_ioctl_wait_idle
Product: Drivers
Version: 2.5
Kernel Version: 2.6.35.2
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - non Intel)
AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
ReportedBy: steve@sk2.org
Regression: Yes
Created an attachment (id=28211)
--> (https://bugzilla.kernel.org/attachment.cgi?id=28211)
Xorg log file
Hi,
With 2.6.35.2 (as packaged in Debian; I haven't tried 2.6.35.4, but as far as I
can see it doesn't contain relevant changes), X fails to display; the kernel
logs fills with repeats of the same Oops, copied below:
[ 72.920167] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 72.920176] IP: [<fab2a7a4>] r600_ioctl_wait_idle+0x4f/0x98 [radeon]
[ 72.920208] *pdpt = 000000003690d001 *pde = 0000000000000000
[ 72.920214] Oops: 0000 [#1] SMP
[ 72.920218] last sysfs file:
/sys/devices/pci0000:00/0000:00:1e.0/0000:02:0c.0/resource
[ 72.920223] Modules linked in: binfmt_misc microcode fuse ext4 jbd2 crc16
sha256_generic aes_i586 aes_generic cbc iT
CO_wdt iTCO_vendor_support tcp_diag inet_diag autofs4 loop grip w83627hf
hwmon_vid dm_crypt snd_hda_codec_atihdmi cx227
02 cx88_dvb cx88_vp3054_i2c videobuf_dvb dvb_core snd_hda_intel
rc_hauppauge_new snd_intel8x0 radeon snd_hda_codec tune
r_simple tuner_types snd_ac97_codec snd_wavefront snd_cs4236 snd_usb_audio
ac97_bus cx88_alsa snd_wss_lib snd_pcm_oss s
nd_opl3_lib snd_mixer_oss snd_hwdep snd_usbmidi_lib snd_mpu401 snd_mpu401_uart
btusb tuner joydev snd_seq_midi snd_pcm
ttm bluetooth snd_rawmidi usblp rfkill hid_logitech cx8800 pwc ir_sony_decoder
cx8802 snd_seq_midi_event ff_memless ir_
jvc_decoder cx88xx drm_kms_helper snd_seq ir_rc6_decoder ir_rc5_decoder
ir_nec_decoder v4l2_common ir_common snd_timer
snd_seq_device ir_core videodev drm v4l1_compat evdev tveeprom videobuf_dma_sg
videobuf_core btcx_risc parport_pc i2c_a
lgo_bit tpm_tis snd i2c_i801 ns558 parport psmouse tpm gameport shpchp tpm_bios
serio_raw processor rng_core i2c_core p
cspkr soundcore button pci_hotplug snd_page_alloc ext3 jbd mbcache dm_mod raid1
raid0 md_mod usbhid hid sg sr_mod sd_mo
d cdrom crc_t10dif ata_generic uhci_hcd ata_piix libata aic7xxx ehci_hcd
aic79xx 3w_xxxx scsi_transport_spi usbcore scs
i_mod firewire_ohci floppy firewire_core thermal skge crc_itu_t thermal_sys
nls_base [last unloaded: scsi_wait_scan]
[ 72.920354]
[ 72.920359] Pid: 3603, comm: Xorg Not tainted 2.6.35-trunk-686-bigmem #1
P4P800/To Be Filled By O.E.M.
[ 72.920363] EIP: 0060:[<fab2a7a4>] EFLAGS: 00013246 CPU: 0
[ 72.920383] EIP is at r600_ioctl_wait_idle+0x4f/0x98 [radeon]
[ 72.920386] EAX: 00000000 EBX: f62109c0 ECX: faf80000 EDX: 00000000
[ 72.920389] ESI: f6026600 EDI: 00000000 EBP: f63abe84 ESP: f63abe5c
[ 72.920392] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 72.920396] Process Xorg (pid: 3603, ti=f63aa000 task=f6508840
task.ti=f63aa000)
[ 72.920399] Stack:
[ 72.920401] f62109c0 fab0dc33 f6a4c580 f64ae000 00000064 f90709f4 c0086464
fab697d4
[ 72.920409] <0> fab0dbf0 bfb84228 00000001 00000000 00000000 00000000
00004000 00000000
[ 72.920417] <0> 00000000 00000001 c10906aa f6a4c280 c10909e6 c143d4c0
c10265c2 fffff000
[ 72.920427] Call Trace:
[ 72.920451] [<fab0dc33>] ? radeon_gem_wait_idle_ioctl+0x43/0x50 [radeon]
[ 72.920472] [<f90709f4>] ? drm_ioctl+0x1e6/0x2aa [drm]
[ 72.920494] [<fab0dbf0>] ? radeon_gem_wait_idle_ioctl+0x0/0x50 [radeon]
[ 72.920503] [<c10906aa>] ? lock_page+0x8/0x1d
[ 72.920507] [<c10909e6>] ? filemap_fault+0xb9/0x2ef
[ 72.920514] [<c10265c2>] ? kmap_atomic_prot+0xcb/0xe7
[ 72.920518] [<c102645c>] ? kunmap_atomic+0x48/0x57
[ 72.920525] [<c10a29fc>] ? __do_fault+0x3f8/0x42e
[ 72.920540] [<f907080e>] ? drm_ioctl+0x0/0x2aa [drm]
[ 72.920546] [<c10c6596>] ? vfs_ioctl+0x1c/0x7d
[ 72.920550] [<c10c6b0e>] ? do_vfs_ioctl+0x472/0x4ac
[ 72.920555] [<c10a70a2>] ? mmap_region+0x342/0x415
[ 72.920559] [<c10c6b8c>] ? sys_ioctl+0x44/0x64
[ 72.920564] [<c1007cdf>] ? sysenter_do_call+0x12/0x28
[ 72.920566] Code: 00 76 10 8b 88 9c 00 00 00 31 c0 89 81 34 2f 00 00 eb 18
8b 98 9c 00 00 00 b9 34 2f 00 00 89 0b 8b 88 9c 00 00 00 31 c0 89 41 04 <8b> 02
eb 43 83 b8 98 00 00 00 00 77 0c 81 b8 94 00 00 00 80 54
[ 72.920619] EIP: [<fab2a7a4>] r600_ioctl_wait_idle+0x4f/0x98 [radeon] SS:ESP
0068:f63abe5c
[ 72.920641] CR2: 0000000000000000
[ 72.920645] ---[ end trace 57bf3e55b0124490 ]---
[ 72.921123] [drm:drm_release] *ERROR* Device busy: 1
I'm also attaching the Xorg.log. I've got a rather unusual system, running a
Pentium 4 (32-bit only) with 3GB of RAM and an AGP HD 4650 with 1GB of VRAM;
the AGP aperture is only 32MB because Linux fails to boot with anything larger.
Regards,
Stephen
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