HI, all
I allocate some 2 pages use kmalloc(), but when I
reserve these pages using
SetPageReserved(), it dump the following message(by dmesg).
what is wrong? Maybe the
"mapcount:0 count:0 " below?
Thanks.
R.wen
==============
Bad page state in process 'events/1'
page:c129d9e0 flags:0x00000400 mapping:00000000 mapcount:0 count:0 (Tainted: P B)
Trying to fix it up, but a reboot is needed
Backtrace:
[<c0448045>] bad_page+0x4a/0x71
[<c044850c>] __free_pages_ok+0x8f/0x153
[<c044d18c>] mod_zone_page_state+0x1c/0x2d
[<c045e15d>] kmem_freepages+0x82/0xa4
[<c045e46c>] slab_destroy+0x62/0x81
[<c045e66c>] drain_freelist+0x5c/0x72
[<c045f9a7>] cache_reap+0x9d/0x100
[<c0429e1c>] run_workqueue+0x78/0xb5
[<c045f90a>] cache_reap+0x0/0x100
[<c042a6dc>] worker_thread+0xd9/0x10d
[<c0415e6c>] default_wake_function+0x0/0xc
[<c042a603>] worker_thread+0x0/0x10d
[<c042cb15>] kthread+0xc0/0xeb
[<c042ca55>] kthread+0x0/0xeb
[<c04029b5>] kernel_thread_helper+0x5/0xb
=======================
page:c129d9e0 flags:0x00000400 mapping:00000000 mapcount:0 count:0 (Tainted: P B)
Trying to fix it up, but a reboot is needed
Backtrace:
[<c0448045>] bad_page+0x4a/0x71
[<c044850c>] __free_pages_ok+0x8f/0x153
[<c044d18c>] mod_zone_page_state+0x1c/0x2d
[<c045e15d>] kmem_freepages+0x82/0xa4
[<c045e46c>] slab_destroy+0x62/0x81
[<c045e66c>] drain_freelist+0x5c/0x72
[<c045f9a7>] cache_reap+0x9d/0x100
[<c0429e1c>] run_workqueue+0x78/0xb5
[<c045f90a>] cache_reap+0x0/0x100
[<c042a6dc>] worker_thread+0xd9/0x10d
[<c0415e6c>] default_wake_function+0x0/0xc
[<c042a603>] worker_thread+0x0/0x10d
[<c042cb15>] kthread+0xc0/0xeb
[<c042ca55>] kthread+0x0/0xeb
[<c04029b5>] kernel_thread_helper+0x5/0xb
=======================
