Attachment 916270 Details for Bug 1117137 – The dmesg lines that triggered the oops

The dmesg lines that triggered the oops

locking.txt (text/plain), 7.86 KB, created by Mikko Tiihonen on 2014-07-08 06:46:47 UTC

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Creator: Mikko Tiihonen

Created: 2014-07-08 06:46:47 UTC

Size: 7.86 KB

patch

obsolete

>[    3.759951] usbcore: registered new interface driver cdc_mbim
>[    3.772912] nouveau  [  PTHERM][0000:01:00.0] FAN control: none / external
>[    3.772925] nouveau  [  PTHERM][0000:01:00.0] fan management: automatic
>[    3.773107] nouveau  [  PTHERM][0000:01:00.0] internal sensor: yes
>[    3.773247] nouveau  [     CLK][0000:01:00.0] 03: core 50 MHz memory 135 MHz 
>[    3.773253] nouveau  [     CLK][0000:01:00.0] 07: core 202 MHz memory 324 MHz 
>[    3.773258] nouveau  [     CLK][0000:01:00.0] 0f: core 700 MHz memory 900 MHz 
>[    3.773422] nouveau  [     CLK][0000:01:00.0] --: core 202 MHz memory 324 MHz 
>[    3.778488] [TTM] Zone  kernel: Available graphics memory: 8176754 kiB
>[    3.778490] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
>[    3.778492] [TTM] Initializing pool allocator
>[    3.778523] [TTM] Initializing DMA pool allocator
>[    3.778714] nouveau  [     DRM] VRAM: 1024 MiB
>[    3.778716] nouveau  [     DRM] GART: 1048576 MiB
>[    3.778720] nouveau  [     DRM] TMDS table version 2.0
>[    3.778722] nouveau  [     DRM] DCB version 4.0
>[    3.778724] nouveau  [     DRM] DCB outp 00: 01800323 00010034
>[    3.778726] nouveau  [     DRM] DCB outp 01: 02011300 00000000
>[    3.778727] nouveau  [     DRM] DCB outp 02: 028223a6 0f220010
>[    3.778729] nouveau  [     DRM] DCB outp 03: 02822362 00020010
>[    3.778730] nouveau  [     DRM] DCB outp 04: 048333b6 0f220010
>[    3.778731] nouveau  [     DRM] DCB outp 05: 04833372 00020010
>[    3.778733] nouveau  [     DRM] DCB outp 06: 088443c6 0f220010
>[    3.778734] nouveau  [     DRM] DCB outp 07: 08844382 00020010
>[    3.778736] nouveau  [     DRM] DCB conn 00: 00000040
>[    3.778738] nouveau  [     DRM] DCB conn 01: 00000100
>[    3.778739] nouveau  [     DRM] DCB conn 02: 00101246
>[    3.778741] nouveau  [     DRM] DCB conn 03: 00202346
>[    3.778742] nouveau  [     DRM] DCB conn 04: 00410446
>[    3.783006] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
>[    3.783008] [drm] Driver supports precise vblank timestamp query.
>
>[    3.783273] =============================================
>[    3.783277] [ INFO: possible recursive locking detected ]
>[    3.783282] 3.16.0-0.rc3.git3.1.fc21.x86_64 #1 Not tainted
>[    3.783286] ---------------------------------------------
>[    3.783291] systemd-udevd/292 is trying to acquire lock:
>[    3.783296]  (&(&backlight_notifier)->rwsem){++++..}, at: [<ffffffff810cf3d5>] __blocking_notifier_call_chain+0x35/0x70
>[    3.783313] 
>but task is already holding lock:
>[    3.783318]  (&(&backlight_notifier)->rwsem){++++..}, at: [<ffffffff810cf3d5>] __blocking_notifier_call_chain+0x35/0x70
>[    3.783337] 
>other info that might help us debug this:
>[    3.783343]  Possible unsafe locking scenario:
>
>[    3.783348]        CPU0
>[    3.783351]        ----
>[    3.783354]   lock(&(&backlight_notifier)->rwsem);
>[    3.783359]   lock(&(&backlight_notifier)->rwsem);
>[    3.783365] 
> *** DEADLOCK ***
>
>[    3.783370]  May be due to missing lock nesting notation
>
>[    3.783377] 5 locks held by systemd-udevd/292:
>[    3.783382]  #0:  (&dev->mutex){......}, at: [<ffffffff815200f3>] __driver_attach+0x43/0x90
>[    3.783397]  #1:  (&dev->mutex){......}, at: [<ffffffff81520101>] __driver_attach+0x51/0x90
>[    3.783410]  #2:  (drm_global_mutex){+.+.+.}, at: [<ffffffffa00bb242>] drm_dev_register+0x22/0x100 [drm]
>[    3.783431]  #3:  (&(&backlight_notifier)->rwsem){++++..}, at: [<ffffffff810cf3d5>] __blocking_notifier_call_chain+0x35/0x70
>[    3.783445]  #4:  (&video->device_list_lock){+.+.+.}, at: [<ffffffffa0000987>] acpi_video_bus_unregister_backlight+0x44/0xff [video]
>[    3.783457] 
>stack backtrace:
>[    3.783462] CPU: 1 PID: 292 Comm: systemd-udevd Not tainted 3.16.0-0.rc3.git3.1.fc21.x86_64 #1
>[    3.783466] Hardware name: LENOVO 42844DG/42844DG, BIOS 8BET57WW (1.37 ) 04/06/2012
>[    3.783470]  0000000000000000 00000000982d2231 ffff880425af7620 ffffffff81807cec
>[    3.783476]  ffffffff82bb9da0 ffff880425af7700 ffffffff81100fd0 0af1c00c00000000
>[    3.783481]  0af1c00cd865e26f ffffffff00000004 ffff880100000000 0af1c00cd865e268
>[    3.783487] Call Trace:
>[    3.783493]  [<ffffffff81807cec>] dump_stack+0x4d/0x66
>[    3.783498]  [<ffffffff81100fd0>] __lock_acquire+0x1450/0x1ca0
>[    3.783502]  [<ffffffff81102104>] lock_acquire+0xa4/0x1d0
>[    3.783506]  [<ffffffff810cf3d5>] ? __blocking_notifier_call_chain+0x35/0x70
>[    3.783511]  [<ffffffff8180f481>] down_read+0x51/0xa0
>[    3.783515]  [<ffffffff810cf3d5>] ? __blocking_notifier_call_chain+0x35/0x70
>[    3.783519]  [<ffffffff810cf3d5>] __blocking_notifier_call_chain+0x35/0x70
>[    3.783523]  [<ffffffff810cf426>] blocking_notifier_call_chain+0x16/0x20
>[    3.783529]  [<ffffffff8145dd69>] backlight_device_unregister+0x59/0xa0
>[    3.783534]  [<ffffffffa00009ab>] acpi_video_bus_unregister_backlight+0x68/0xff [video]
>[    3.783540]  [<ffffffffa00015f4>] acpi_video_backlight_notify+0x46/0x53 [video]
>[    3.783545]  [<ffffffff810cf002>] notifier_call_chain+0x62/0x140
>[    3.783549]  [<ffffffff810cf3ed>] __blocking_notifier_call_chain+0x4d/0x70
>[    3.783553]  [<ffffffff810cf426>] blocking_notifier_call_chain+0x16/0x20
>[    3.783557]  [<ffffffff8145e123>] backlight_device_register+0x193/0x270
>[    3.783592]  [<ffffffffa01fd122>] nouveau_backlight_init+0x1d2/0x300 [nouveau]
>[    3.783622]  [<ffffffffa01de878>] nouveau_display_create+0x4e8/0x730 [nouveau]
>[    3.783667]  [<ffffffffa01cc523>] nouveau_drm_load+0x343/0x960 [nouveau]
>[    3.783675]  [<ffffffff810ff72d>] ? trace_hardirqs_on_caller+0x15d/0x200
>[    3.783690]  [<ffffffffa00bb2cd>] drm_dev_register+0xad/0x100 [drm]
>[    3.783705]  [<ffffffffa00be0fd>] drm_get_pci_dev+0x8d/0x200 [drm]
>[    3.783743]  [<ffffffffa01ccdaa>] nouveau_drm_probe+0x26a/0x2b0 [nouveau]
>[    3.783755]  [<ffffffff81430055>] local_pci_probe+0x45/0xa0
>[    3.783763]  [<ffffffff81431335>] ? pci_match_device+0xe5/0x110
>[    3.783769]  [<ffffffff81431499>] pci_device_probe+0xf9/0x150
>[    3.783775]  [<ffffffff8151fd13>] driver_probe_device+0xa3/0x400
>[    3.783781]  [<ffffffff8152013b>] __driver_attach+0x8b/0x90
>[    3.783786]  [<ffffffff815200b0>] ? __device_attach+0x40/0x40
>[    3.783792]  [<ffffffff8151d993>] bus_for_each_dev+0x73/0xc0
>[    3.783797]  [<ffffffff8151f76e>] driver_attach+0x1e/0x20
>[    3.783803]  [<ffffffff8151f338>] bus_add_driver+0x188/0x260
>[    3.783809]  [<ffffffff81520c14>] driver_register+0x64/0xf0
>[    3.783814]  [<ffffffff8142f900>] __pci_register_driver+0x60/0x70
>[    3.783824]  [<ffffffffa00be37a>] drm_pci_init+0x10a/0x140 [drm]
>[    3.783829]  [<ffffffffa027c000>] ? 0xffffffffa027bfff
>[    3.783852]  [<ffffffffa027c042>] nouveau_drm_init+0x42/0x1000 [nouveau]
>[    3.783858]  [<ffffffff81002148>] do_one_initcall+0xd8/0x210
>[    3.783862]  [<ffffffff81206dda>] ? __vunmap+0xba/0x120
>[    3.783867]  [<ffffffff8113afa0>] load_module+0x2110/0x2740
>[    3.783871]  [<ffffffff81136210>] ? store_uevent+0x70/0x70
>[    3.783876]  [<ffffffff810fc24f>] ? lock_release_holdtime.part.28+0xf/0x200
>[    3.783881]  [<ffffffff811025f6>] ? lock_release_non_nested+0x3c6/0x3d0
>[    3.783885]  [<ffffffff8113b6b7>] SyS_init_module+0xe7/0x140
>[    3.783890]  [<ffffffff818118e9>] system_call_fastpath+0x16/0x1b
>[    3.783914] systemd-udevd[293]: renamed network interface wwan0 to wwp0s29u1u4i6
>[    3.791148] nouveau  [     DRM] MM: using COPY0 for buffer copies
>[    3.802911] systemd-udevd[289]: renamed network interface eth0 to em1
>[    3.888058] random: nonblocking pool is initialized
>[    4.085182] firewire_core 0000:0d:00.3: created device fw0: GUID f0def1ff5ee648ff, S400
>[    4.108119] Switched to clocksource tsc
>[    5.024777] nouveau  [     DRM] allocated 1600x900 fb: 0x60000, bo ffff880425aff800
>[    5.025017] fbcon: nouveaufb (fb0) is primary device
>[    5.333087] Console: switching to colour frame buffer device 200x56
>[    5.335447] nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device
>[    5.335472] nouveau 0000:01:00.0: registered panic notifier
>[    5.337714] [drm] Initialized nouveau 1.1.1 20120801 for 0000:01:00.0 on minor 0
>

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Attachments on bug 1117137: 916270