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xen-devel
RE: [Xen-devel] Kernel BUGatarch/x86_64/mm/../../i386/mm/hypervisor.c:19
> When running on 4GB of total memory instead of 12GB,
> everything is just fine. (the three virtual machines, Dom0 +
> 2 x DomU are assigned 1GB of memory each, in both test runs).
> Does that help?
Is this with the kernel and xen from -unstabele/3.0.3 ? Have you
changed the config?
What storage device do you have? What NIC?
Are you setting mem=4096M on the Xen command line? If you removed DIMMs
to get 4GB in the machine some of the memory willl still be mapped above
4GB.
It seems hard to imagine this is a lurking 4GB issue (especially on
x86_64 rather tha PAE).
Ian
> If you have any ideas where I should do more debugging,
> please tell me.
> We would really like to get this machine going.
>
> > Oct 3 23:27:28 tuek BUG: soft lockup detected on CPU#0!
> > Oct 3 23:27:28 tuek CPU 0:
> > Oct 3 23:27:28 tuek Modules linked in: nfsd exportfs Oct
> 3 23:27:28
> > tuek Pid: 3988, comm: gmetad Not tainted 2.6.16.29-xen-xenU
> #2 Oct 3
> > 23:27:28 tuek RIP: e030:[<ffffffff8010722a>]
> > <ffffffff8010722a>{hypercall_page+554}
> > Oct 3 23:27:28 tuek RSP: e02b:ffff88003e32f9e0 EFLAGS:
> 00000246 Oct
> > 3 23:27:28 tuek RAX: 0000000000030000 RBX: ffff8800017ea448 RCX:
> > ffffffff8010722a Oct 3 23:27:28 tuek RDX: ffffffffff5fd000 RSI:
> > 0000000000000000 RDI: 0000000000000000 Oct 3 23:27:28 tuek RBP:
> > ffff88003e32f9f8 R08: 0000000000000000 R09: 0000000000000000 Oct 3
> > 23:27:28 tuek R10: 0000000000007ff0 R11: 0000000000000246 R12:
> > 0000000000001000 Oct 3 23:27:28 tuek R13: ffff88003e32fd38 R14:
> > 0000000000005000 R15: 0000000000000002 Oct 3 23:27:28 tuek FS:
> > 00002aeaaa684b00(0000) GS:ffffffff804bf000(0000)
> > knlGS:0000000000000000 Oct 3 23:27:28 tuek CS: e033 DS: 0000 ES:
> > 0000 Oct 3 23:27:28 tuek Oct 3 23:27:28 tuek Call Trace:
> > <ffffffff802dc47e>{force_evtchn_callback+14}
> > Oct 3 23:27:28 tuek <ffffffff803d4ab6>{do_page_fault+214}
> > <ffffffff8010b6fb>{error_exit+0} Oct 3 23:27:28 tuek
> > <ffffffff8010b6fb>{error_exit+0}
> > <ffffffff8014f50e>{file_read_actor+62}
> > Oct 3 23:27:28 tuek <ffffffff8014f57c>{file_read_actor+172}
> > <ffffffff8014d19c>{do_generic_mapping_read+412}
> > Oct 3 23:27:28 tuek <ffffffff8014f4d0>{file_read_actor+0}
> > <ffffffff8014dce8>{__generic_file_aio_read+424}
> > Oct 3 23:27:28 tuek <ffffffff8014dd98>{generic_file_aio_read+56}
> > <ffffffff801f8f51>{nfs_file_read+129}
> > Oct 3 23:27:28 tuek <ffffffff80172dd0>{do_sync_read+240}
> > <ffffffff80161981>{vma_link+129} Oct 3 23:27:28 tuek
> > <ffffffff80140500>{autoremove_wake_function+0}
> > <ffffffff80162b02>{do_mmap_pgoff+1458}
> > Oct 3 23:27:28 tuek <ffffffff8017381b>{vfs_read+187}
> > <ffffffff80173ce0>{sys_read+80} Oct 3 23:27:28 tuek
> > <ffffffff8010afbe>{system_call+134}
> <ffffffff8010af38>{system_call+0}
> >
> > Oct 3 23:27:52 tuek Bad page state in process 'bash'
> > Oct 3 23:27:52 tuek page:ffff880001c72bc8 flags:0x0000000000000000
> > mapping:0000000000000000 mapcount:1 count:1 Oct 3 23:27:52 tuek
> > Trying to fix it up, but a reboot is needed Oct 3 23:27:52
> tuek Backtrace:
> > Oct 3 23:27:52 tuek
> > Oct 3 23:27:52 tuek Call Trace: <ffffffff801512ad>{bad_page+93}
> > <ffffffff80151d57>{get_page_from_freelist+775}
> > Oct 3 23:27:52 tuek <ffffffff80151f1d>{__alloc_pages+157}
> > <ffffffff80152249>{get_zeroed_page+73}
> > Oct 3 23:27:52 tuek <ffffffff80158cf4>{__pmd_alloc+36}
> > <ffffffff8015e55e>{copy_page_range+1262}
> > Oct 3 23:27:52 tuek <ffffffff802a6bea>{rb_insert_color+250}
> > <ffffffff80127cb7>{copy_process+3079}
> > Oct 3 23:27:52 tuek <ffffffff80128c8e>{do_fork+238}
> > <ffffffff801710d6>{fd_install+54} Oct 3 23:27:52 tuek
> > <ffffffff80134e8c>{sigprocmask+220}
> > <ffffffff8010afbe>{system_call+134}
> > Oct 3 23:27:52 tuek <ffffffff801094b3>{sys_clone+35}
> > <ffffffff8010b3e9>{ptregscall_common+61}
> >
> > Oct 3 23:27:52 tuek ----------- [cut here ] --------- [please bite
> > here ] --------- Oct 3 23:27:52 tuek Kernel BUG at
> > arch/x86_64/mm/../../i386/mm/hypervisor.c:198
> > Oct 3 23:27:52 tuek invalid opcode: 0000 [1] SMP Oct 3
> 23:27:52 tuek
> > CPU 3 Oct 3 23:27:52 tuek Modules linked in: nfsd exportfs
> > Oct 3 23:27:52 tuek Pid: 4617, comm: bash Tainted: G B
> 2.6.16.29-xen-xenU #2
> > Oct 3 23:27:52 tuek RIP: e030:[<ffffffff80117cb5>]
> > <ffffffff80117cb5>{xen_pgd_pin+85}
> > Oct 3 23:27:52 tuek RSP: e02b:ffff880038ed9d58 EFLAGS:
> 00010282 Oct
> > 3 23:27:52 tuek RAX: 00000000ffffffea RBX: ffff880000e098c0 RCX:
> > 000000000001dc48 Oct 3 23:27:52 tuek RDX: 0000000000000000 RSI:
> > 0000000000000001 RDI: ffff880038ed9d58 Oct 3 23:27:52 tuek RBP:
> > ffff880038ed9d78 R08: ffff880038e7fff8 R09: ffff880038e7fff8 Oct 3
> > 23:27:52 tuek R10: 0000000000007ff0 R11: ffff880002d39008 R12:
> > 0000000000000000 Oct 3 23:27:52 tuek R13: ffff8800006383c0 R14:
> > 0000000001200011 R15: ffff8800006383c0 Oct 3 23:27:52 tuek FS:
> > 00002afecc63ae60(0000) GS:ffffffff804bf180(0000)
> > knlGS:0000000000000000 Oct 3 23:27:52 tuek CS: e033 DS: 0000 ES:
> > 0000 Oct 3 23:27:52 tuek Process bash (pid: 4617, threadinfo
> > ffff880038ed8000, task ffff88003f9e0180) Oct 3 23:27:52
> tuek Stack:
> > 0000000000000003 00000000001b3aa7 0000000001200011 ffff880002d39008
> > Oct 3 23:27:52 tuek ffff880038ed9d98 ffffffff80117543
> > 0000000000000000 ffff88003ca4ea28 Oct 3 23:27:52 tuek
> > ffff880038ed9da8 ffffffff801175f2 Oct 3 23:27:52 tuek Call Trace:
> > <ffffffff80117543>{mm_pin+387} <ffffffff801175f2>{_arch_dup_mmap+18}
> > Oct 3 23:27:52 tuek <ffffffff80127cf6>{copy_process+3142}
> > <ffffffff80128c8e>{do_fork+238} Oct 3 23:27:52 tuek
> > <ffffffff801710d6>{fd_install+54}
> <ffffffff80134e8c>{sigprocmask+220}
> > Oct 3 23:27:52 tuek <ffffffff8010afbe>{system_call+134}
> > <ffffffff801094b3>{sys_clone+35} Oct 3 23:27:52 tuek
> > <ffffffff8010b3e9>{ptregscall_common+61}
> > Oct 3 23:27:52 tuek
> > Oct 3 23:27:52 tuek Code: 0f 0b 68 38 d7 3f 80 c2 c6 00 90
> c9 c3 0f
> > 1f 80 00 00 00 00 Oct 3 23:27:52 tuek RIP
> > <ffffffff80117cb5>{xen_pgd_pin+85} RSP <ffff880038ed9d58>
>
>
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