[mythtv-commits] Ticket #1316: Exiting Live TV with HD5000 results in "Bad page state" in dmesg; backtrace included

[MythTV]

#1316: Exiting Live TV with HD5000 results in "Bad page state" in dmesg; backtrace
included
-------------------------------------------+--------------------------------
 Reporter:  Yeechang Lee <ylee at pobox.com>  |       Owner:  xris
     Type:  defect                         |      Status:  new 
 Priority:  minor                          |   Milestone:      
Component:  mythweb                        |     Version:  0.19
 Severity:  low                            |  
-------------------------------------------+--------------------------------
 When I exit Live TV (whether by switching to another tuner or by exiting
 to the main menu) using a HD5000 AirStar2 ATSC card, I see the following
 in dmesg:
 {{{
 Bad page state at free_hot_cold_page (in process 'mythfrontend', page
 c161d700)
 flags:0x80000400 mapping:00000000 mapcount:0 count:0 (Tainted: PF   B)
 Backtrace:
  [<c014d91e>] bad_page+0x8c/0xc3     [<c014e21c>]
 free_hot_cold_page+0x3a/0x126
  [<c01f5c0e>] pci_bus_read_config_dword+0x61/0x6b     [<f96726f7>]
 nv_vm_free_pages+0xb6/0x10f [nvidia]
  [<f967130a>] nv_free_pages+0x290/0x2b2 [nvidia]     [<f946d2ba>]
 _nv002097rm+0x4e/0x58 [nvidia]
  [<f946d299>] _nv002097rm+0x2d/0x58 [nvidia]     [<f959b8ab>]
 _nv004517rm+0x23/0x28 [nvidia]
  [<f944daaa>] _nv007899rm+0x9a/0xd4 [nvidia]     [<f94571ca>]
 _nv001474rm+0x8e/0x9c [nvidia]
  [<f959b801>] _nv004519rm+0x19/0x40 [nvidia]     [<f9456fb2>]
 _nv001479rm+0x82/0x190 [nvidia]
  [<f9456ff1>] _nv001479rm+0xc1/0x190 [nvidia]     [<f944fc30>]
 _nv007916rm+0x40/0x5c [nvidia]
  [<f9473a66>] rm_disable_interrupts+0x42/0x54 [nvidia]     [<f9456254>]
 _nv001492rm+0x13c/0x260 [nvidia]
  [<f9672d36>] os_acquire_sema+0x57/0x60 [nvidia]     [<f946d10a>]
 _nv002123rm+0x12/0x18 [nvidia]
  [<f945199b>] _nv002944rm+0x33/0x9c [nvidia]     [<f94519d1>]
 _nv002944rm+0x69/0x9c [nvidia]
  [<f9474d0d>] _nv001447rm+0x3d/0x5e4 [nvidia]     [<f9474ee3>]
 _nv001447rm+0x213/0x5e4 [nvidia]
  [<f9473d73>] rm_ioctl+0x23/0x38 [nvidia]     [<c01f1468>]
 copy_from_user+0x42/0x7a
  [<f966fef1>] nv_kern_ioctl+0x2cf/0x353 [nvidia]     [<c0104629>]
 irq_entries_start+0x4c1/0x8f8
  [<c017b124>] do_ioctl+0x64/0x6d     [<c017b287>] vfs_ioctl+0x56/0x1c4
  [<c01084cd>] do_syscall_trace+0x1ac/0x1c4     [<c017b452>]
 sys_ioctl+0x5d/0x6f
  [<c0104035>] syscall_call+0x7/0xb     [<c0104629>]
 irq_entries_start+0x4c1/0x8f8
 Trying to fix it up, but a reboot is needed
 }}}

 Curiously, despite the warning about a reboot being needed, as far as I
 can tell the system (mythbackend, mythfrontend, etc.) continues to run
 fine. I wouldn't have even noticed the error except that on my system
 syslog sends warning messages to 'wall'. This issue does *not* occur when
 stopping a recording from the HD5000.

 I am using the ATrpms RPM package of 0.19 with the ATrpms Nvidia 7676
 drivers on a Pentium 4 3.0GHz frontend/backend running Fedora Core 4 and
 the latest 2.6.15-1831_FC4smp kernel. I previously used the 0.18.1 ATrpms
 package with no such error messages.

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/1316>
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