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    SubjectRe: [Xen-devel] Re: kernel BUG at mm/swapfile.c:2527! [was 3.0.0 Xen pv guest - BUG: Unable to handle]
    On Mon, Aug 29, 2011 at 10:39:25AM -0400, Christopher S. Aker wrote:
    > And another related from 2.6.39:

    I just don't get how you are the only person seeing this - and you have
    been seeing this from 2.6.32... The dom0 you have - is it printing at least
    something when this happens (or before)? Or the Xen hypervisor:
    maybe a message about L1 pages not found?

    And the dom0 is 2.6.18, right? - Did you update it (I know that the Red Hat guys
    have been updating a couple of things on it).

    Any chance I can get access to your setup and try to work with somebody
    to reproduce this?

    >
    > ------------[ cut here ]------------
    > kernel BUG at mm/swapfile.c:2527!
    > invalid opcode: 0000 [#1] SMP
    > last sysfs file: /sys/devices/system/cpu/cpu3/topology/core_id
    > Modules linked in:
    >
    > Pid: 17680, comm: postgres Tainted: G B 2.6.39-linode33 #3
    > EIP: 0061:[<c01b4b26>] EFLAGS: 00210246 CPU: 0
    > EIP is at swap_count_continued+0x176/0x180
    > EAX: f57bac57 EBX: eba2c200 ECX: f57ba000 EDX: 00000000
    > ESI: ebfd7c20 EDI: 00000080 EBP: 00000c57 ESP: c670fe0c
    > DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069
    > Process postgres (pid: 17680, ti=c670e000 task=e93415d0 task.ti=c670e000)
    > Stack:
    > e9e3a340 00013c57 ee15fc57 00000000 c01b60b1 c0731000 c06982d5 401b4b73
    > ceebc988 e9e3a340 00013c57 00000000 c01b60f7 ceebc988 b7731000 c670ff04
    > c01a7183 4646e045 80000005 e62ce348 28999063 c0103fc5 7f662000 00278ae0
    > Call Trace:
    > [<c01b60b1>] ? swap_entry_free+0x121/0x140
    > [<c06982d5>] ? _raw_spin_lock+0x5/0x10
    > [<c01b60f7>] ? free_swap_and_cache+0x27/0xd0
    > [<c01a7183>] ? zap_pte_range+0x1b3/0x480
    > [<c0103fc5>] ? pte_pfn_to_mfn+0xb5/0xd0
    > [<c01a7568>] ? unmap_page_range+0x118/0x1a0
    > [<c0105b17>] ? xen_force_evtchn_callback+0x17/0x30
    > [<c01a771b>] ? unmap_vmas+0x12b/0x1e0
    > [<c01aba01>] ? exit_mmap+0x91/0x140
    > [<c0134b2b>] ? mmput+0x2b/0xc0
    > [<c01386ba>] ? exit_mm+0xfa/0x130
    > [<c0698330>] ? _raw_spin_lock_irq+0x10/0x20
    > [<c013a2b5>] ? do_exit+0x125/0x360
    > [<c0105b17>] ? xen_force_evtchn_callback+0x17/0x30
    > [<c013a52c>] ? do_group_exit+0x3c/0xa0
    > [<c013a5a1>] ? sys_exit_group+0x11/0x20
    > [<c0698631>] ? syscall_call+0x7/0xb
    > Code: ff 89 d8 e8 7d ec f6 ff 01 e8 8d 76 00 c6 00 00 ba 01 00 00 00
    > eb b2 89 f8 3c 80 0f 94 c0
    > e9 b9 fe ff ff 0f 0b eb fe 0f 0b eb fe <0f> 0b eb fe 0f 0b eb fe 66
    > 90 53 31 db 83 ec 0c 85 c0 7
    > 4 39 89
    > EIP: [<c01b4b26>] swap_count_continued+0x176/0x180 SS:ESP 0069:c670fe0c
    > ---[ end trace c2dcb41c89b0a9f7 ]---
    >
    > Thanks,
    > -Chris
    >
    >
    > _______________________________________________
    > Xen-devel mailing list
    > Xen-devel@lists.xensource.com
    > http://lists.xensource.com/xen-devel


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