This happened on Alpha (Miata, Digital Workstation 500au), with plain
2.6.15 when trying to run esd to talk to ALSA (snd-es18xx). In earlier
versions this did not happen, however sound still did not work properly
-- it was looping with no interrupts counted in /proc/interrupts for
that device. Kernel was built with CONFIG_ALPHA_GENERIC, as opposed to
CONFIG_ALPHA_MIATA because CONFIG_ALPHA_MIATA for some reason disabled
serial interrupts.
--- 8< ---
Jan 4 08:24:19 dvk3 kernel: Bad page state at free_hot_cold_page (in
process 'esd', page fffffc0000481438)
Jan 4 08:24:19 dvk3 kernel: flags:0x0000000000000414
mapping:0000000000000000 mapcount:0 count:0
Jan 4 08:24:19 dvk3 kernel: Backtrace:
Jan 4 08:24:19 dvk3 kernel: fffffc00095d3c88 0000000000000000
fffffc000105b218 0000000000000000
Jan 4 08:24:19 dvk3 kernel: fffffc0001062afc fffffc0000481438
0000000000063309 fffffc0009f9d328
Jan 4 08:24:19 dvk3 kernel: 00000200004ca000 00000000000006d0
fffffc0001062608 fffffc000a6e18c0
Jan 4 08:24:19 dvk3 kernel: fffffc0001072c4c fffffc00016afc00
fffffc0001068038 fffffc0000481438
Jan 4 08:24:19 dvk3 kernel: fffffc0001068278 00000200004d8000
fffffc00089e4000 fffffc00095d3e28
Jan 4 08:24:19 dvk3 kernel: fffffc000892a800 0000000000000000
fffffc000892a800 00000200004d8000
Jan 4 08:24:19 dvk3 kernel: Trace:
Jan 4 08:24:19 dvk3 kernel: [free_hot_cold_page+160/364]
free_hot_cold_page+0xa0/0x16c
Jan 4 08:24:19 dvk3 kernel: [__page_cache_release+236/256]
__page_cache_release+0xec/0x100
Jan 4 08:24:19 dvk3 kernel: [put_page+208/228] put_page+0xd0/0xe4
Jan 4 08:24:19 dvk3 kernel: [free_page_and_swap_cache+112/136]
free_page_and_swap_cache+0x70/0x88
Jan 4 08:24:19 dvk3 kernel: [zap_pte_range+464/644]
zap_pte_range+0x1d0/0x284
Jan 4 08:24:19 dvk3 kernel: [unmap_page_range+396/516]
unmap_page_range+0x18c/0x204
Jan 4 08:24:19 dvk3 kernel: [context_switch+280/372]
context_switch+0x118/0x174
Jan 4 08:24:19 dvk3 kernel: [unmap_vmas+276/544] unmap_vmas+0x114/0x220
Jan 4 08:24:19 dvk3 kernel: [unmap_region+176/364] unmap_region+0xb0/0x16c
Jan 4 08:24:19 dvk3 kernel: [do_munmap+304/352] do_munmap+0x130/0x160
Jan 4 08:24:19 dvk3 kernel: [sys_munmap+128/216] sys_munmap+0x80/0xd8
Jan 4 08:24:19 dvk3 kernel: [entSys+164/192] entSys+0xa4/0xc0
Jan 4 08:24:19 dvk3 kernel:
Jan 4 08:24:19 dvk3 kernel: Trying to fix it up, but a reboot is needed
--- >8 ---
(identical entries followed in the log).
This looks similar to what was reported for 2.6.15-rc1-mm2, except that
this is 2.6.15.
--
Alex Belits
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