Bug#422284: Happened again

[Rob Leslie <rob@mars.org>]

The problem occurred again today during installation of a new  
package, this time against package version 2.6.18.dfsg.1-12etch2:


Bad page state in process 'dpkg-preconfigu'
page:c1209300 flags:0x80000000 mapping:00000000 mapcount:0 count:8192
Trying to fix it up, but a reboot is needed
Backtrace:
[<c0144f15>] bad_page+0x41/0x67
[<c01456b3>] get_page_from_freelist+0x22e/0x36e
[<c0145841>] __alloc_pages+0x4e/0x275
[<c0146b97>] __do_page_cache_readahead+0xc8/0x1e8
[<e09bb97d>] dm_any_congested+0x2f/0x35 [dm_mod]
[<e09bd2da>] dm_table_any_congested+0x32/0x48 [dm_mod]
[<c0146cfd>] blockable_page_cache_readahead+0x46/0x99
[<c0146dc0>] make_ahead_window+0x70/0x8d
[<c0146f31>] page_cache_readahead+0x154/0x177
[<c0141da0>] do_generic_mapping_read+0x137/0x42a
[<c01428d2>] __generic_file_aio_read+0x16b/0x1b2
[<c01415bb>] file_read_actor+0x0/0xca
[<c0142954>] generic_file_aio_read+0x3b/0x42
[<c0159e13>] do_sync_read+0xb6/0xf1
[<c012d92d>] autoremove_wake_function+0x0/0x2d
[<c0159d5d>] do_sync_read+0x0/0xf1
[<c015a71c>] vfs_read+0x9f/0x141
[<c015ab68>] sys_read+0x3c/0x63
[<c0102c11>] sysenter_past_esp+0x56/0x79


I'm not sure what other info would be helpful to assess the  
situation, so if anyone can think of something, please let me know.

Thanks.

--
Rob Leslie
rob@mars.org