Re: [ck] Bad page state at free_hot_cold_page

[Jan Engelhardt <jengelh@linux01.gwdg.de>]

>> Greetings,
>> 	(I'm posting this to LKML and CK because I'm not sure if any of 2.6.15-ck1's 
>> changes might cause this scenario)
>> 	Recently I've noticed that after my desktop has been up for a while, my music 
>> playback / mouse cursor movement will on occasion pause briefly. I got 
>> frustrated with it a minute ago and decided to kill artsd, wondering if there 
>> could be issues with both arts and amarok's backend holding the audio device 
>> open at once.
>> 	When running killall artsd, I locked up for a second and found this in dmesg:
>> 
>> Bad page state at free_hot_cold_page (in process 'artsd', page b1761620)
>> flags:0x80000404 mapping:00000000 mapcount:0 count:0
>> Backtrace:
>>  [<b0148e9a>] bad_page+0x84/0xbc
>>  [<b0149699>] free_hot_cold_page+0x65/0x13a
>>  [<b05b6901>] _spin_unlock_irqrestore+0xf/0x23
>>  [<b0153bf1>] zap_pte_range+0x1d1/0x28f
>>  [<b0153d70>] unmap_page_range+0xc1/0x122
>>  [<b0153ebe>] unmap_vmas+0xed/0x242
>>  [<b0158099>] unmap_region+0xb4/0x156
>>  [<b01583e2>] do_munmap+0x108/0x144
>>  [<b015846f>] sys_munmap+0x51/0x76
>>  [<b0102eff>] sysenter_past_esp+0x54/0x75
>> Trying to fix it up, but a reboot is needed

Ftr, I get the same stackdump when shutting down X. But look no 
further: I use an ancient nvidia and 2.6.15 (vanilla). No bad ram here,
even tested last week before install. :)


Jan Engelhardt
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