On Sat, 8 Oct 2011, Matthias Dahl wrote:

> > First, please inline the text into your e-mails next time, it's much more 
> > convenient to look at them as such rather than having to process gzipped 
> > attachments.
> 
> Ok, will do. Just thought because of the text size this was inappropriate  or
> would cause trouble with some restricitions of the list.
> 
> > Is it nvidia gfx driver? If so, does the problem appear also with it not 
> > loaded?
> 
> Yes, nvidia 285.05.09 _but_ I just went through  the  trouble to  get nouveau
> up and running and tested with that and I ran into the same problems as well,
> so this is not related to the nvidia blob.
> 
> Here three more incidents.   The first one again with the nvidia blob and the
> following two with nouveau. The last one caused a partial hang up btw.  Don't
> mind the tainted mark on the last one.    By accident I modprobe'd the nvidia
> blob which simply said it found no devices because nouveau was already active
> and did nothing (exited).
> 
> Last but not least, I am now on 3.0.6 and I do not see anything alike at all.

The BUGs below seem different to what you originally reported (execution 
attempt in NX-protected area).

I believe the ones below would be interesting for V4L people. Adding some 
more CCs.

> 
> [ 7353.662147] BUG: unable to handle kernel paging request at ffffffffa00d7040
> [ 7353.662152] IP: [<ffffffffa00d7040>] 0xffffffffa00d703f
> [ 7353.662159] PGD 1561067 PUD 1565063 PMD 21cf28067 PTE 0
> [ 7353.662163] Oops: 0010 [#1] PREEMPT SMP 
> [ 7353.662166] CPU 1 
> [ 7353.662167] Modules linked in: nvidia(P) it87 hwmon_vid coretemp xt_time 
> xt_connlimit xt_realm xt_addrtype iptable_raw xt_comment xt_policy ipt_ULOG 
> ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_LOG ipt_ECN ipt_ecn 
> ipt_ah nf_nat_tftp nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc 
> nf_nat_h323 nf_nat_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda 
> nf_conntrack_sane nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp 
> nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink 
> nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_irc 
> nf_conntrack_h323 nf_conntrack_ftp xt_tcpmss xt_recent xt_pkttype xt_owner 
> xt_NFQUEUE xt_NFLOG nfnetlink_log xt_multiport xt_mark xt_mac xt_limit 
> xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp 
> xt_conntrack xt_connmark xt_CLASSIFY xt_tcpudp xt_state iptable_nat nf_nat 
> nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink 
> iptable_filter ip_tables x_tables snd_pcm_oss snd_mixer_oss xts g
 f1
>  28mul usblp isl6421 cx24116 cx88_vp3054_i2c videobuf_dvb dvb_core 
> snd_hda_codec_hdmi rc_hauppauge tuner cx8800 cx8802 cx88xx ir_lirc_codec 
> lirc_dev snd_hda_codec_realtek ir_mce_kbd_decoder ir_sony_decoder 
> ir_jvc_decoder ir_rc6_decoder ir_rc5_decoder ir_nec_decoder snd_hda_intel 
> rc_core snd_hda_codec i2c_algo_bit snd_virtuoso snd_oxygen_lib tveeprom 
> snd_hwdep v4l2_common snd_pcm videodev v4l2_compat_ioctl32 snd_mpu401_uart 
> btcx_risc snd_rawmidi videobuf_dma_sg snd_timer snd videobuf_core joydev 
> evdev xpad snd_page_alloc soundcore fuse ext2 mbcache dm_snapshot dm_mirror 
> dm_region_hash dm_log scsi_wait_scan usb_storage
> [ 7353.662246] 
> [ 7353.662249] Pid: 20362, comm: knotify4 Tainted: P            3.1.0-rc9 #1 
> Gigabyte Technology Co., Ltd. P55-UD5/P55-UD5
> [ 7353.662253] RIP: 0010:[<ffffffffa00d7040>]  [<ffffffffa00d7040>] 
> 0xffffffffa00d703f
> [ 7353.662261] RSP: 0018:ffff880100c7de70  EFLAGS: 00010282
> [ 7353.662262] RAX: ffffffffa00d7040 RBX: ffff88021d9e7000 RCX: 
> 000000000048e1c1
> [ 7353.662265] RDX: 000000000048e1b9 RSI: 0000000000000001 RDI: 
> ffff88021d119000
> [ 7353.662267] RBP: ffff880100c7dea8 R08: 0000000000000000 R09: 
> 0000000000000000
> [ 7353.662269] R10: ffff8801eaba5310 R11: 0000000000000246 R12: 
> ffff8801fe815800
> [ 7353.662271] R13: ffff8801eaba5300 R14: ffff88021d9e7218 R15: 
> ffff88021d9e7070
> [ 7353.662274] FS:  00007f8123191780(0000) GS:ffff880227c40000(0000) 
> knlGS:0000000000000000
> [ 7353.662276] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 7353.662278] CR2: ffffffffa00d7040 CR3: 00000001c0c8b000 CR4: 
> 00000000000006e0
> [ 7353.662281] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 
> 0000000000000000
> [ 7353.662283] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 
> 0000000000000400
> [ 7353.662286] Process knotify4 (pid: 20362, threadinfo ffff880100c7c000, 
> task ffff88021d884e00)
> [ 7353.662287] Stack:
> [ 7353.662289]  ffffffffa00bfc6a ffff88020a3accf0 ffff88021d112000 
> ffff8801eaba5300
> [ 7353.662293]  ffff8802007742a8 ffff880201c64d80 ffff88021d16cd00 
> ffff880100c7dec8
> [ 7353.662296]  ffffffffa01171eb ffff8801eaba5300 0000000000000008 
> ffff880100c7df18
> [ 7353.662300] Call Trace:
> [ 7353.662307]  [<ffffffffa00bfc6a>] ? video_release+0xda/0x1e0 [cx8800]
> [ 7353.662315]  [<ffffffffa01171eb>] v4l2_release+0x4b/0x70 [videodev]
> [ 7353.662320]  [<ffffffff810d81e2>] fput+0xd2/0x200
> [ 7353.662324]  [<ffffffff810d4a21>] filp_close+0x61/0x90
> [ 7353.662327]  [<ffffffff810d4b01>] sys_close+0xb1/0x110
> [ 7353.662331]  [<ffffffff813df03b>] system_call_fastpath+0x16/0x1b
> [ 7353.662333] Code:  Bad RIP value.
> [ 7353.662337] RIP  [<ffffffffa00d7040>] 0xffffffffa00d703f
> [ 7353.662343]  RSP <ffff880100c7de70>
> [ 7353.662345] CR2: ffffffffa00d7040
> [ 7353.662347] ---[ end trace f0533e94307d7f16 ]---
> 
> 
> [   17.271064] nouveau 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 
> 16
> [   17.271074] nouveau 0000:01:00.0: setting latency timer to 64
> [   17.274536] [drm] nouveau 0000:01:00.0: Detected an NVc0 generation card 
> (0x0c0680a3)
> [   17.290213] [drm] nouveau 0000:01:00.0: Attempting to load BIOS image from 
> PRAMIN
> [   17.389788] [drm] nouveau 0000:01:00.0: ... appears to be valid
> [   17.389791] [drm] nouveau 0000:01:00.0: BIT BIOS found
> [   17.389794] [drm] nouveau 0000:01:00.0: Bios version 70.00.35.00
> [   17.389797] [drm] nouveau 0000:01:00.0: TMDS table version 2.0
> [   17.389799] [drm] nouveau 0000:01:00.0: Found Display Configuration Block 
> version 4.0
> [   17.389801] [drm] nouveau 0000:01:00.0: Raw DCB entry 0: 02000300 00000000
> [   17.389804] [drm] nouveau 0000:01:00.0: Raw DCB entry 1: 01000302 00020030
> [   17.389806] [drm] nouveau 0000:01:00.0: Raw DCB entry 2: 04011380 00000000
> [   17.389807] [drm] nouveau 0000:01:00.0: Raw DCB entry 3: 08011382 00020030
> [   17.389809] [drm] nouveau 0000:01:00.0: Raw DCB entry 4: 02022362 00020010
> [   17.389812] [drm] nouveau 0000:01:00.0: DCB connector table: VHER 0x40 5 
> 16 4
> [   17.389815] [drm] nouveau 0000:01:00.0:   0: 0x00001030: type 0x30 idx 0 
> tag 0x07
> [   17.389817] [drm] nouveau 0000:01:00.0:   1: 0x00010130: type 0x30 idx 1 
> tag 0x51
> [   17.389819] [drm] nouveau 0000:01:00.0:   2: 0x00002261: type 0x61 idx 2 
> tag 0x08
> [   17.389823] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 0 at 
> offset 0x6ABA
> [   17.423234] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 1 at 
> offset 0x7151
> [   17.436199] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 2 at 
> offset 0x83C0
> [   17.436202] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 3 at 
> offset 0x83CA
> [   17.436275] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 4 at 
> offset 0x85D3
> [   17.436277] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table at offset 
> 0x8638
> [   17.456226] [drm] nouveau 0000:01:00.0: 0x8638: Condition still not met 
> after 20ms, skipping following opcodes
> [   17.456237] [drm] nouveau 0000:01:00.0: voltage table 0x40 unknown
> [   17.475304] [drm] nouveau 0000:01:00.0: 4 available performance level(s)
> [   17.475308] [drm] nouveau 0000:01:00.0: 0: memory 135MHz core 50MHz shader 
> 101MHz timing 2
> [   17.475311] [drm] nouveau 0000:01:00.0: 1: memory 324MHz core 405MHz 
> shader 810MHz voltage 10mV timing 1
> [   17.475314] [drm] nouveau 0000:01:00.0: 2: memory 1701MHz core 405MHz 
> shader 810MHz voltage 20mV timing 0
> [   17.475318] [drm] nouveau 0000:01:00.0: 3: memory 1701MHz core 656MHz 
> shader 1312MHz voltage 20mV timing 0
> [   17.482694] [TTM] Zone  kernel: Available graphics memory: 4081528 kiB.
> [   17.482696] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB.
> [   17.482697] [TTM] Initializing pool allocator.
> [   17.482708] [drm] nouveau 0000:01:00.0: Detected 1280MiB VRAM
> [   17.482713] mtrr: type mismatch for d8000000,8000000 old: write-back new: 
> write-combining
> [   17.482723] [drm] nouveau 0000:01:00.0: 512 MiB GART (aperture)
> [   17.494676] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
> [   17.494678] [drm] No driver support for vblank timestamp query.
> [   17.809336] [drm] nouveau 0000:01:00.0: allocated 1920x1200 fb: 0x1e0000, 
> bo ffff88021d07e000
> [   17.809362] fbcon: nouveaufb (fb0) is primary device
> [   17.856515] Console: switching to colour frame buffer device 240x75
> [   17.863092] fb0: nouveaufb frame buffer device
> [   17.863093] drm: registered panic notifier
> [   17.863097] [drm] Initialized nouveau 0.0.16 20090420 for 0000:01:00.0 on 
> minor 0
> [   18.694798] usbcore: registered new interface driver usblp
> [   21.982736] EXT4-fs (md127p1): re-mounted. Opts: 
> commit=45,barrier=1,stripe=32,data=ordered
> [   22.156848] EXT4-fs (md127p2): mounted filesystem with ordered data mode. 
> Opts: commit=45,barrier=1,stripe=32,data=ordered
> [   22.231456] EXT4-fs (md127p3): mounted filesystem with ordered data mode. 
> Opts: commit=45,barrier=1,stripe=32,data=ordered
> [   22.252325] EXT4-fs (sdb2): mounted filesystem with ordered data mode. 
> Opts: commit=15,barrier=1,data=ordered
> [   25.469675] Adding 4000060k swap on /dev/mapper/crypt-swap.  Priority:-1 
> extents:1 across:4000060k 
> [   27.615512] ip_tables: (C) 2000-2006 Netfilter Core Team
> [   29.426771] Netfilter messages via NETLINK v0.30.
> [   29.449860] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
> [   29.705214] ctnetlink v0.93: registering with nfnetlink.
> [   30.215031] xt_time: kernel timezone is +0200
> [   31.525180] r8169 0000:02:00.0: eth0: link down
> [   31.525185] r8169 0000:02:00.0: eth0: link down
> [   33.197522] r8169 0000:02:00.0: eth0: link up
> [   48.210515] it87: Found IT8720F chip at 0x290, revision 8
> [   48.210526] it87: VID is disabled (pins used for GPIO)
> [   48.210538] it87: Routing internal VCCH to in7
> [   48.210544] it87: Beeping is supported
> [  159.977593] ata1.00: configured for UDMA/133
> [  159.977601] ata1: EH complete
> [  159.999115] ata2.00: configured for UDMA/133
> [  159.999123] ata2: EH complete
> [  160.105969] ata3.00: configured for UDMA/133
> [  160.105976] ata3: EH complete
> [  160.271205] ata4.00: configured for UDMA/133
> [  160.271212] ata4: EH complete
> [  161.567449] EXT4-fs (md127p1): re-mounted. Opts: 
> commit=45,barrier=1,stripe=32,data=ordered,commit=0
> [  161.952021] EXT4-fs (md127p2): re-mounted. Opts: 
> commit=45,barrier=1,stripe=32,data=ordered,commit=0
> [  161.955064] EXT4-fs (md127p3): re-mounted. Opts: 
> commit=45,barrier=1,stripe=32,data=ordered,commit=0
> [  182.843219] kernel tried to execute NX-protected page - exploit attempt? 
> (uid: 1000)
> [  182.843251] BUG: unable to handle kernel paging request at ffff8802140dfd80
> [  182.843275] IP: [<ffff8802140dfd80>] 0xffff8802140dfd7f
> [  182.843300] PGD 1560063 PUD 227ffa067 PMD 80000002140001e3 
> [  182.843324] Oops: 0011 [#1] PREEMPT SMP 
> [  182.843343] CPU 7 
> [  182.843351] Modules linked in: it87 hwmon_vid coretemp xt_time 
> xt_connlimit xt_realm xt_addrtype iptable_raw xt_comment xt_policy ipt_ULOG 
> ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_LOG ipt_ECN ipt_ecn 
> ipt_ah nf_nat_tftp nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc 
> nf_nat_h323 nf_nat_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda 
> nf_conntrack_sane nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp 
> nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink 
> nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_irc 
> nf_conntrack_h323 nf_conntrack_ftp xt_tcpmss xt_recent xt_pkttype xt_owner 
> xt_NFQUEUE xt_NFLOG nfnetlink_log xt_multiport xt_mark xt_mac xt_limit 
> xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp 
> xt_conntrack xt_connmark xt_CLASSIFY xt_tcpudp xt_state iptable_nat nf_nat 
> nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink 
> iptable_filter ip_tables x_tables snd_pcm_oss snd_mixer_oss xts gf128mul us
 bl
>  p snd_hda_codec_hdmi isl6421 cx24116 nouveau cx88_vp3054_i2c videobuf_dvb 
> dvb_core snd_hda_codec_realtek rc_hauppauge snd_hda_intel snd_hda_codec 
> ir_lirc_codec lirc_dev ir_mce_kbd_decoder ir_sony_decoder fbcon 
> ir_jvc_decoder tuner ttm snd_virtuoso font bitblit softcursor ir_rc6_decoder 
> drm_kms_helper cx8802 snd_oxygen_lib ir_rc5_decoder snd_hwdep cx8800 drm 
> cx88xx snd_pcm ir_nec_decoder rc_core snd_mpu401_uart snd_timer snd_rawmidi 
> fb snd tveeprom fbdev i2c_algo_bit v4l2_common cfbcopyarea mxm_wmi videodev 
> v4l2_compat_ioctl32 btcx_risc videobuf_dma_sg xpad soundcore videobuf_core 
> wmi snd_page_alloc evdev cfbimgblt cfbfillrect joydev fuse ext2 mbcache 
> dm_snapshot dm_mirror dm_region_hash dm_log scsi_wait_scan usb_storage
> [  182.844113] 
> [  182.844123] Pid: 15327, comm: knotify4 Not tainted 3.1.0-rc9 #2 Gigabyte 
> Technology Co., Ltd. P55-UD5/P55-UD5
> [  182.844154] RIP: 0010:[<ffff8802140dfd80>]  [<ffff8802140dfd80>] 
> 0xffff8802140dfd7f
> [  182.844182] RSP: 0018:ffff8801f05d1ea0  EFLAGS: 00010282
> [  182.844197] RAX: ffffffffa0116040 RBX: ffff8801f3b8c400 RCX: 
> 00000000000257bf
> [  182.844215] RDX: 00000000000257b7 RSI: 0000000000000001 RDI: 
> ffff88021ea2e000
> [  182.844232] RBP: ffff88021db53530 R08: 0000000000000000 R09: 
> 0000000000000000
> [  182.844251] R10: ffff8801ddedf490 R11: 0000000000000246 R12: 
> ffffffffa0261c6a
> [  182.844273] R13: ffff880214150cf0 R14: ffff88021d836000 R15: 
> ffff8801ddedf480
> [  182.844292] FS:  00007faee290c780(0000) GS:ffff880227dc0000(0000) 
> knlGS:0000000000000000
> [  182.844311] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [  182.844327] CR2: ffff8802140dfd80 CR3: 00000001f0571000 CR4: 
> 00000000000006e0
> [  182.844344] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 
> 0000000000000000
> [  182.844362] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 
> 0000000000000400
> [  182.844380] Process knotify4 (pid: 15327, threadinfo ffff8801f05d0000, 
> task ffff88021d91d400)
> [  182.844399] Stack:
> [  182.844408]  ffff88021d14b300 ffff8801f05d1ec8 ffffffffa00d51eb 
> ffff8801ddedf480
> [  182.844437]  0000000000000008 ffff8801f05d1f18 ffffffff810d81e2 
> ffff8801f05d1ef8
> [  182.844466]  ffff8801ddedf490 00000000fffffffe ffff8801ddedf480 
> ffff88021cc86ec0
> [  182.844495] Call Trace:
> [  182.844517]  [<ffffffffa00d51eb>] ? v4l2_release+0x4b/0x70 [videodev]
> [  182.844539]  [<ffffffff810d81e2>] ? fput+0xd2/0x200
> [  182.844556]  [<ffffffff810d4a21>] ? filp_close+0x61/0x90
> [  182.844575]  [<ffffffff810d4b01>] ? sys_close+0xb1/0x110
> [  182.844593]  [<ffffffff813df03b>] ? system_call_fastpath+0x16/0x1b
> [  182.844608] Code: 88 ff ff d0 15 14 14 02 88 ff ff 60 fd 0d 14 02 88 ff ff 
> 60 fd 0d 14 02 88 ff ff b0 43 4e 1c 02 88 ff ff b0 43 4e 1c 02 88 ff ff 
> [  182.844764]  00 00 00 04 00 00 00 00 00 00 00 00 00 00 00 30 f5 fa 1e 02 
> [  182.844839] RIP  [<ffff8802140dfd80>] 0xffff8802140dfd7f
> [  182.844862]  RSP <ffff8801f05d1ea0>
> [  182.844872] CR2: ffff8802140dfd80
> [  182.865521] ---[ end trace f5fb49efc531d0ed ]---
> 
> 
> [    9.787983] MXM: GUID detected in BIOS
> [    9.788028] nouveau 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 
> 16
> [    9.788036] nouveau 0000:01:00.0: setting latency timer to 64
> [    9.790142] cx88[0]: subsystem: 0070:6906, board: Hauppauge 
> WinTV-HVR4000(Lite) DVB-S/S2 [card=69,autodetected], frontend(s): 1
> [    9.790149] cx88[0]: TV tuner type -1, Radio tuner type -1
> [    9.790788] [drm] nouveau 0000:01:00.0: Detected an NVc0 generation card 
> (0x0c0680a3)
> [    9.795664] IR RC6 protocol handler initialized
> [    9.806440] snd_virtuoso 0000:06:04.0: PCI INT A -> GSI 16 (level, low) -> 
> IRQ 16
> [    9.806581] cx88/2: cx2388x MPEG-TS Driver Manager version 0.0.9 loaded
> [    9.808168] [drm] nouveau 0000:01:00.0: Attempting to load BIOS image from 
> PRAMIN
> [    9.876155] IR JVC protocol handler initialized
> [    9.907779] [drm] nouveau 0000:01:00.0: ... appears to be valid
> [    9.907782] [drm] nouveau 0000:01:00.0: BIT BIOS found
> [    9.907784] [drm] nouveau 0000:01:00.0: Bios version 70.00.35.00
> [    9.907787] [drm] nouveau 0000:01:00.0: TMDS table version 2.0
> [    9.907789] [drm] nouveau 0000:01:00.0: Found Display Configuration Block 
> version 4.0
> [    9.907791] [drm] nouveau 0000:01:00.0: Raw DCB entry 0: 02000300 00000000
> [    9.907793] [drm] nouveau 0000:01:00.0: Raw DCB entry 1: 01000302 00020030
> [    9.907795] [drm] nouveau 0000:01:00.0: Raw DCB entry 2: 04011380 00000000
> [    9.907797] [drm] nouveau 0000:01:00.0: Raw DCB entry 3: 08011382 00020030
> [    9.907799] [drm] nouveau 0000:01:00.0: Raw DCB entry 4: 02022362 00020010
> [    9.907801] [drm] nouveau 0000:01:00.0: DCB connector table: VHER 0x40 5 
> 16 4
> [    9.907804] [drm] nouveau 0000:01:00.0:   0: 0x00001030: type 0x30 idx 0 
> tag 0x07
> [    9.907806] [drm] nouveau 0000:01:00.0:   1: 0x00010130: type 0x30 idx 1 
> tag 0x51
> [    9.907809] [drm] nouveau 0000:01:00.0:   2: 0x00002261: type 0x61 idx 2 
> tag 0x08
> [    9.907812] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 0 at 
> offset 0x6ABA
> [    9.924879] IR Sony protocol handler initialized
> [    9.933606] IR MCE Keyboard/mouse protocol handler initialized
> [    9.941191] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 1 at 
> offset 0x7151
> [    9.941703] snd_hda_intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) 
> -> IRQ 22
> [    9.941744] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X
> [    9.941764] snd_hda_intel 0000:00:1b.0: setting latency timer to 64
> [    9.946802] i2c-core: driver [tuner] using legacy suspend method
> [    9.946804] i2c-core: driver [tuner] using legacy resume method
> [    9.947548] lirc_dev: IR Remote Control driver registered, major 251 
> [    9.953617] IR LIRC bridge handler initialized
> [    9.954175] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 2 at 
> offset 0x83C0
> [    9.954178] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 3 at 
> offset 0x83CA
> [    9.954263] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table 4 at 
> offset 0x85D3
> [    9.954264] [drm] nouveau 0000:01:00.0: Parsing VBIOS init table at offset 
> 0x8638
> [    9.973779] [drm] nouveau 0000:01:00.0: 0x8638: Condition still not met 
> after 20ms, skipping following opcodes
> [    9.973789] [drm] nouveau 0000:01:00.0: voltage table 0x40 unknown
> [    9.992860] [drm] nouveau 0000:01:00.0: 4 available performance level(s)
> [    9.992863] [drm] nouveau 0000:01:00.0: 0: memory 135MHz core 50MHz shader 
> 101MHz timing 2
> [    9.992867] [drm] nouveau 0000:01:00.0: 1: memory 324MHz core 405MHz 
> shader 810MHz voltage 10mV timing 1
> [    9.992870] [drm] nouveau 0000:01:00.0: 2: memory 1701MHz core 405MHz 
> shader 810MHz voltage 20mV timing 0
> [    9.992874] [drm] nouveau 0000:01:00.0: 3: memory 1701MHz core 656MHz 
> shader 1312MHz voltage 20mV timing 0
> [   10.000278] [TTM] Zone  kernel: Available graphics memory: 4081528 kiB.
> [   10.000281] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB.
> [   10.000282] [TTM] Initializing pool allocator.
> [   10.000291] [drm] nouveau 0000:01:00.0: Detected 1280MiB VRAM
> [   10.000295] mtrr: type mismatch for d8000000,8000000 old: write-back new: 
> write-combining
> [   10.000305] [drm] nouveau 0000:01:00.0: 512 MiB GART (aperture)
> [   10.002677] tveeprom 1-0050: Hauppauge model 69100, rev B2C3, serial# 
> 5328235
> [   10.002680] tveeprom 1-0050: MAC address is 00:0d:fe:51:4d:6b
> [   10.002682] tveeprom 1-0050: tuner model is Conexant CX24118A (idx 123, 
> type 4)
> [   10.002684] tveeprom 1-0050: TV standards ATSC/DVB Digital (eeprom 0x80)
> [   10.002686] tveeprom 1-0050: audio processor is None (idx 0)
> [   10.002688] tveeprom 1-0050: decoder processor is CX882 (idx 25)
> [   10.002690] tveeprom 1-0050: has no radio, has IR receiver, has no IR 
> transmitter
> [   10.002692] cx88[0]: hauppauge eeprom: model=69100
> [   10.012397] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
> [   10.012399] [drm] No driver support for vblank timestamp query.
> [   10.051943] Registered IR keymap rc-hauppauge
> [   10.052011] input: cx88 IR (Hauppauge WinTV-HVR400 as 
> /devices/pci0000:00/0000:00:1e.0/0000:08:02.0/rc/rc0/input6
> [   10.052033] rc0: cx88 IR (Hauppauge WinTV-HVR400 as 
> /devices/pci0000:00/0000:00:1e.0/0000:08:02.0/rc/rc0
> [   10.052084] input: MCE IR Keyboard/Mouse (cx88xx) as 
> /devices/virtual/input/input7
> [   10.052127] rc rc0: lirc_dev: driver ir-lirc-codec (cx88xx) registered at 
> minor = 0
> [   10.052132] cx88[0]/0: found at 0000:08:02.0, rev: 5, irq: 18, latency: 
> 32, mmio: 0xfa000000
> [   10.052210] cx88[0]/0: registered device video0 [v4l2]
> [   10.052224] cx88[0]/0: registered device vbi0
> [   10.052237] cx88[0]/2: cx2388x 8802 Driver Manager
> [   10.052245] cx88-mpeg driver manager 0000:08:02.2: PCI INT A -> GSI 18 
> (level, low) -> IRQ 18
> [   10.052251] cx88[0]/2: found at 0000:08:02.2, rev: 5, irq: 18, latency: 
> 32, mmio: 0xf8000000
> [   10.201019] cx88/2: cx2388x dvb driver version 0.0.9 loaded
> [   10.201025] cx88/2: registering cx8802 driver, type: dvb access: shared
> [   10.201032] cx88[0]/2: subsystem: 0070:6906, board: Hauppauge 
> WinTV-HVR4000(Lite) DVB-S/S2 [card=69]
> [   10.201036] cx88[0]/2: cx2388x based DVB/ATSC card
> [   10.201040] cx8802_alloc_frontends() allocating 1 frontend(s)
> [   10.253054] DVB: registering new adapter (cx88[0])
> [   10.253056] DVB: registering adapter 0 frontend 0 (Conexant 
> CX24116/CX24118)...
> [   10.253638] cx88[0]: videobuf_dvb_register_frontend failed (errno = -12)
> [   10.253641] cx88[0]/2: dvb_register failed (err = -12)
> [   10.253643] cx88[0]/2: cx8802 probe failed, err = -12
> [   10.330776] [drm] nouveau 0000:01:00.0: allocated 1920x1200 fb: 0x1e0000, 
> bo ffff88021cc3d000
> [   10.330837] fbcon: nouveaufb (fb0) is primary device
> [   10.386001] Console: switching to colour frame buffer device 240x75
> [   10.392578] fb0: nouveaufb frame buffer device
> [   10.392580] drm: registered panic notifier
> [   10.392584] [drm] Initialized nouveau 0.0.16 20090420 for 0000:01:00.0 on 
> minor 0
> [   10.392613] snd_hda_intel 0000:01:00.1: PCI INT B -> GSI 17 (level, low) 
> -> IRQ 17
> [   10.392654] snd_hda_intel 0000:01:00.1: irq 48 for MSI/MSI-X
> [   10.392673] snd_hda_intel 0000:01:00.1: setting latency timer to 64
> [   10.606474] HDMI status: Codec=0 Pin=5 Presence_Detect=0 ELD_Valid=0
> [   10.642376] HDMI status: Codec=1 Pin=5 Presence_Detect=0 ELD_Valid=0
> [   10.678281] HDMI status: Codec=2 Pin=5 Presence_Detect=0 ELD_Valid=0
> [   10.714179] HDMI status: Codec=3 Pin=5 Presence_Detect=0 ELD_Valid=0
> [   11.585871] usbcore: registered new interface driver usblp
> [   12.709526] EXT4-fs (md127p1): re-mounted. Opts: 
> commit=45,barrier=1,stripe=32,data=ordered
> [   12.871801] EXT4-fs (md127p2): mounted filesystem with ordered data mode. 
> Opts: commit=45,barrier=1,stripe=32,data=ordered
> [   12.966222] EXT4-fs (md127p3): mounted filesystem with ordered data mode. 
> Opts: commit=45,barrier=1,stripe=32,data=ordered
> [   12.982062] EXT4-fs (sdb2): mounted filesystem with ordered data mode. 
> Opts: commit=15,barrier=1,data=ordered
> [   16.221398] Adding 4000060k swap on /dev/mapper/crypt-swap.  Priority:-1 
> extents:1 across:4000060k 
> [   18.441126] ip_tables: (C) 2000-2006 Netfilter Core Team
> [   20.161017] Netfilter messages via NETLINK v0.30.
> [   20.200707] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
> [   20.464374] ctnetlink v0.93: registering with nfnetlink.
> [   20.999117] xt_time: kernel timezone is +0200
> [   22.235315] r8169 0000:02:00.0: eth0: link down
> [   22.235320] r8169 0000:02:00.0: eth0: link down
> [   23.928564] r8169 0000:02:00.0: eth0: link up
> [   38.085066] it87: Found IT8720F chip at 0x290, revision 8
> [   38.085077] it87: VID is disabled (pins used for GPIO)
> [   38.085089] it87: Routing internal VCCH to in7
> [   38.085095] it87: Beeping is supported
> [  210.607698] ata1.00: configured for UDMA/133
> [  210.607701] ata1: EH complete
> [  210.647399] ata2.00: configured for UDMA/133
> [  210.647402] ata2: EH complete
> [  210.783226] ata3.00: configured for UDMA/133
> [  210.783230] ata3: EH complete
> [  210.979126] ata4.00: configured for UDMA/133
> [  210.979130] ata4: EH complete
> [  214.841875] EXT4-fs (md127p1): re-mounted. Opts: 
> commit=45,barrier=1,stripe=32,data=ordered,commit=0
> [  215.330416] EXT4-fs (md127p2): re-mounted. Opts: 
> commit=45,barrier=1,stripe=32,data=ordered,commit=0
> [  215.332890] EXT4-fs (md127p3): re-mounted. Opts: 
> commit=45,barrier=1,stripe=32,data=ordered,commit=0
> [  234.517728] ------------[ cut here ]------------
> [  234.517736] WARNING: at mm/page_alloc.c:2088 
> __alloc_pages_nodemask+0x163/0x710()
> [  234.517738] Hardware name: P55-UD5
> [  234.517739] Modules linked in: it87 hwmon_vid coretemp xt_time 
> xt_connlimit xt_realm xt_addrtype iptable_raw xt_comment xt_policy ipt_ULOG 
> ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_LOG ipt_ECN ipt_ecn 
> ipt_ah nf_nat_tftp nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc 
> nf_nat_h323 nf_nat_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda 
> nf_conntrack_sane nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp 
> nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink 
> nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_irc 
> nf_conntrack_h323 nf_conntrack_ftp xt_tcpmss xt_recent xt_pkttype xt_owner 
> xt_NFQUEUE xt_NFLOG nfnetlink_log xt_multiport xt_mark xt_mac xt_limit 
> xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp 
> xt_conntrack xt_connmark xt_CLASSIFY xt_tcpudp xt_state iptable_nat nf_nat 
> nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink 
> iptable_filter ip_tables x_tables snd_pcm_oss snd_mixer_oss xts gf128mul us
 bl
>  p snd_hda_codec_hdmi isl6421 cx24116 cx88_vp3054_i2c videobuf_dvb dvb_core 
> snd_hda_codec_realtek rc_hauppauge ir_lirc_codec lirc_dev tuner snd_hda_intel 
> ir_mce_kbd_decoder ir_sony_decoder ir_jvc_decoder cx8802 snd_virtuoso 
> ir_rc6_decoder nouveau snd_hda_codec cx8800 ir_rc5_decoder snd_oxygen_lib 
> cx88xx ir_nec_decoder snd_hwdep rc_core ttm snd_pcm tveeprom snd_timer 
> v4l2_common videodev fbcon font bitblit softcursor drm_kms_helper drm 
> snd_mpu401_uart fb fbdev snd_rawmidi i2c_algo_bit snd cfbcopyarea 
> v4l2_compat_ioctl32 btcx_risc videobuf_dma_sg mxm_wmi cfbimgblt 
> snd_page_alloc wmi videobuf_core joydev xpad cfbfillrect evdev soundcore fuse 
> ext2 mbcache dm_snapshot dm_mirror dm_region_hash dm_log scsi_wait_scan 
> usb_storage
> [  234.518053] Pid: 21406, comm: knotify4 Tainted: P            3.1.0-rc9 #2
> [  234.518054] Call Trace:
> [  234.518060]  [<ffffffff8103c03a>] warn_slowpath_common+0x7a/0xb0
> [  234.518064]  [<ffffffff810b3e28>] ? __do_fault+0x1d8/0x4d0
> [  234.518067]  [<ffffffff8103c085>] warn_slowpath_null+0x15/0x20
> [  234.518070]  [<ffffffff810a1a23>] __alloc_pages_nodemask+0x163/0x710
> [  234.518073]  [<ffffffff810b652c>] ? handle_pte_fault+0x7c/0x7a0
> [  234.518083]  [<ffffffffa01915d0>] ? v4l_printk_ioctl+0x80/0x80 [videodev]
> [  234.518087]  [<ffffffff810e58d5>] ? release_open_intent+0x35/0x40
> [  234.518090]  [<ffffffff810b7ea5>] ? handle_mm_fault+0x165/0x300
> [  234.518093]  [<ffffffff810a1fe2>] __get_free_pages+0x12/0x40
> [  234.518096]  [<ffffffff810ce336>] __kmalloc+0x136/0x150
> [  234.518102]  [<ffffffffa00bd181>] usblp_write+0x1d1/0x310 [usblp]
> [  234.518107]  [<ffffffffa01901eb>] v4l2_release+0x4b/0x70 [videodev]
> [  234.518111]  [<ffffffff810d81e2>] fput+0xd2/0x200
> [  234.518114]  [<ffffffff810d4a21>] filp_close+0x61/0x90
> [  234.518117]  [<ffffffff810d4b01>] sys_close+0xb1/0x110
> [  234.518121]  [<ffffffff813df03b>] system_call_fastpath+0x16/0x1b
> [  234.518130] ---[ end trace 6fb2e5d4254083e3 ]---
> 
> 
> So long,
> matthias.
> 

-- 
Jiri Kosina
SUSE Labs
--
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