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    SubjectRe: BUG at mm/vmscan.c:904 [mmotm 2009-07-02-19-57]
    From
    Hi, kame.

    Andrew already reverted it.
    It's totally my fault.
    I'll fix it on tomorrow.

    Thanks for notifying me. :)

    On Fri, Jul 3, 2009 at 5:39 PM, KAMEZAWA
    Hiroyuki<kamezawa.hiroyu@jp.fujitsu.com> wrote:
    > On Fri, 03 Jul 2009 10:19:34 +0200
    > Jiri Slaby <jirislaby@gmail.com> wrote:
    >
    >> Hi,
    >>
    >> I don't know what exactly lead to this, but I got it when installing a
    >> kernel rpm (io load) in qemu:
    >>
    > IIUC....
    >
    > plz revert this.
    >
    >  vmscan-dont-attempt-to-reclaim-anon-page-in-lumpy-reclaim-when-no-swap-space-is-available.patch
    >
    > or rewrite as following.
    > ==
    > +       if (nr_swap_pages <= 0 && (PageAnon(page) && !PageSwapCache(page)))
    > +               return -EBUSY;
    > +
    > ==
    >
    > CCed to Minchan and Kosaki.
    >
    > Regards,
    > -Kame
    >
    >
    >
    >> ------------[ cut here ]------------
    >> kernel BUG at mm/vmscan.c:904!
    >> invalid opcode: 0000 [#1] PREEMPT SMP
    >> last sysfs file: /sys/devices/pci0000:00/0000:00:05.0/modalias
    >> CPU 0
    >> Modules linked in: e1000
    >> Pid: 290, comm: kswapd0 Tainted: G       AW  2.6.31-rc1-mm1 #103
    >> RIP: 0010:[<ffffffff81095c96>]  [<ffffffff81095c96>]
    >> isolate_pages_global+0x196/0x260
    >> RSP: 0018:ffff880011943c40  EFLAGS: 00010082
    >> RAX: 00000000ffffffea RBX: ffffea0000050170 RCX: 0000000000000001
    >> RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffea0000050170
    >> RBP: ffff880011943cd0 R08: 0000000000000001 R09: ffffffff81668b00
    >> R10: 00000000ffffffff R11: 0000000000000001 R12: ffffffff81669060
    >> R13: ffffea0000050198 R14: ffff880011943d50 R15: ffffffff81668b00
    >> FS:  0000000000000000(0000) GS:ffff88000176f000(0000) knlGS:0000000000000000
    >> CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
    >> CR2: 00007f5d32981000 CR3: 0000000011adb000 CR4: 00000000000006f0
    >> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    >> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    >> Process kswapd0 (pid: 290, threadinfo ffff880011942000, task
    >> ffff88001254c840)
    >> Stack:
    >>  ffff880011943d68 0000000000000020 0000000000000030 000000020177f4b0
    >> <0> 0000000000000003 000000008103329b 0000000000000001 ffffffffffffffff
    >> <0> 0000000100000003 0000000000000000 0000000000000000 0000000000000000
    >> Call Trace:
    >>  [<ffffffff81096ae6>] shrink_active_list+0xa6/0x330
    >>  [<ffffffff81032fe8>] ? task_rq_lock+0x48/0x90
    >>  [<ffffffff810985c0>] ? kswapd+0x0/0x770
    >>  [<ffffffff81098ab5>] kswapd+0x4f5/0x770
    >>  [<ffffffff81037177>] ? pick_next_task_fair+0xd7/0xf0
    >>  [<ffffffff810985c0>] ? kswapd+0x0/0x770
    >>  [<ffffffff81095b00>] ? isolate_pages_global+0x0/0x260
    >>  [<ffffffff8103f1ed>] ? default_wake_function+0xd/0x10
    >>  [<ffffffff8105aa30>] ? autoremove_wake_function+0x0/0x40
    >>  [<ffffffff813f9978>] ? preempt_schedule+0x38/0x60
    >>  [<ffffffff813fbb40>] ? _spin_unlock_irqrestore+0x30/0x40
    >>  [<ffffffff810985c0>] ? kswapd+0x0/0x770
    >>  [<ffffffff8105a6b6>] kthread+0x96/0xa0
    >>  [<ffffffff8100ceaa>] child_rip+0xa/0x20
    >>  [<ffffffff8105a620>] ? kthread+0x0/0xa0
    >>  [<ffffffff8100cea0>] ? child_rip+0x0/0x20
    >> Code: 80 75 12 8b 55 bc 8b 75 b4 4c 89 ef e8 f4 f9 ff ff 85 c0 74 79 49
    >> ff c7 49 83 c5 38 4c 39 7d 98 77 cf 48 ff 45 c8 e9 e9 fe ff ff <0f> 0b
    >> eb fe 48 8b 53 30 48 8b 4b 28 48 8d 43 28 48 89 51 08 48
    >> RIP  [<ffffffff81095c96>] isolate_pages_global+0x196/0x260
    >>  RSP <ffff880011943c40>
    >> ---[ end trace fc1de39f3465335f ]---
    >> note: kswapd0[290] exited with preempt_count 1
    >>
    >> --
    >> To unsubscribe, send a message with 'unsubscribe linux-mm' in
    >> the body to majordomo@kvack.org.  For more info on Linux MM,
    >> see: http://www.linux-mm.org/ .
    >> Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
    >>
    >
    >



    --
    Kind regards,
    Minchan Kim
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