I'm having some trouble with 2.6.15-rc1:
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 640k freed
Bad page state at free_hot_cold_page (in process 'init', page 108a24a0)
flags:0x00000400 mapping:00000000 mapcount:0 count:0
Backtrace:
Backtrace:
[<101481cc>] bad_page+0x70/0xc4
[<10148920>] free_hot_cold_page+0x74/0x124
[<10275e68>] uart_shutdown+0xf0/0xf8
[<102775f8>] uart_close+0xc8/0x214
[<1025c710>] release_dev+0x72c/0x734
[<1025cddc>] tty_release+0x10/0x20
[<101680f0>] __fput+0x15c/0x170
[<10166520>] filp_close+0x58/0x94
[<1010d114>] syscall_exit+0x0/0x14
This is on a parisc system, though a very similar tree boots fine on a
different machine. The machine which produces this message is a K460
which uses the Mux serial driver. As far as I can tell, the only call
to free_hot_cold_page() in uart_shutdown() is to free info->xmit.buf
which seems to be always filled by a call to get_zeroed_page().
This problem doesn't show with 2.6.14. I can give access to this
machine to anyone who wants to do some debugging. It has remote power
capabilities ;-)
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