[Xen-users] DomU crash while scp'ing a file

[Rich Wales <richw@xxxxxxxxx>]

I was trying tonight to transfer a large file to one of my domU's (from
a source computer that is not part of my Xen cluster).

Partway through the transfer, the domU in question crashed.  See the
attached file with the console output.  After this console output, the
domU was frozen.

I did this twice, with the same outcome each time.

Other domU's on the same box continued to run just fine.

I'm running Xen 3.1 / Ubuntu 7.10, kernel 2.6.22-14-xen, on an AMD
Athlon XP 2700+ box with 3 GB of RAM.  There were no errors of any sort
logged on the dom0 at the time of the domU crash.

Any ideas or suggestions?

--
Rich Wales      ===      Palo Alto, CA, USA      ===     richw@xxxxxxxxx
http://www.richw.org   ===   http://en.wikipedia.org/wiki/User:Richwales

[1317343.477166] ------------[ cut here ]------------
[1317343.477564] kernel BUG at include2/asm/mach-xen/asm/maddr.h:34!
[1317343.478268] invalid opcode: 0000 [#1]
[1317343.478501] SMP 
[1317343.479009] Modules linked in: ipv6 evdev 8250 serial_core ext3 jbd 
mbcache dm_mirror dm_snapshot dm_mod fuse apparmor commoncap
[1317343.481150] CPU:    0
[1317343.481152] EIP:    0061:[<c0118dd7>]    Not tainted VLI
[1317343.481153] EFLAGS: 00010206   (2.6.22-14-xen #1)
[1317343.481534] EIP is at xen_l1_entry_update+0x97/0xb0
[1317343.481826] eax: 00030800   ebx: 0804b000   ecx: 00000000   edx: 000357f6
[1317343.482026] esi: 357f6258   edi: c1643420   ebp: 00000000   esp: c219bd64
[1317343.482206] ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0069
[1317343.482346] Process kswapd0 (pid: 61, ti=c219a000 task=c21cd4c0 
task.ti=c219a000)
[1317343.482505] Stack: 6116c005 c219e200 f57f6258 00000061 80000000 0804b000 
ed48d540 c1643420 
[1317343.484048]        00000000 c016b5a0 c219bda8 c219bddc 6116c005 00000000 
ed48d540 f57f6258 
[1317343.485654]        00000020 c1fbf24c c1643420 c1732cac c1fa0260 00000000 
c016b62c c1643448 
[1317343.487223] Call Trace:
[1317343.487540]  [<c016b5a0>] page_referenced_one+0x180/0x190
[1317343.487861]  [<c016b62c>] page_referenced_file+0x7c/0xb0
[1317343.488296]  [<c016c5cf>] page_referenced+0x11f/0x130
[1317343.488672]  [<c015b2ec>] shrink_inactive_list+0x1fc/0x910
[1317343.489023]  [<ee02d43e>] mb_cache_shrink_fn+0x1e/0x100 [mbcache]
[1317343.489380]  [<c015bab4>] shrink_zone+0xb4/0x120
[1317343.489789]  [<c015c08c>] kswapd+0x33c/0x470
[1317343.490109]  [<c01365d0>] autoremove_wake_function+0x0/0x50
[1317343.490457]  [<c015bd50>] kswapd+0x0/0x470
[1317343.490812]  [<c0136312>] kthread+0x42/0x70
[1317343.491111]  [<c01362d0>] kthread+0x0/0x70
[1317343.491407]  [<c0105927>] kernel_thread_helper+0x7/0x10
[1317343.491737]  =======================
[1317343.491910] Code: 24 04 be f0 7f 00 00 89 4c 24 0c b9 01 00 00 00 89 54 24 
10 31 d2 e8 59 82 fe ff 85 c0 78 15 83 c4 14 5b 5e 5f 5d c3 39 c2 72 93 <0f> 0b 
eb fe 90 8d 74 26 00 0f 0b eb fe 8d b6 00 00 00 00 8d bf 
[1317343.502515] EIP: [<c0118dd7>] xen_l1_entry_update+0x97/0xb0 SS:ESP 
0069:c219bd64
[1317343.503236] note: kswapd0[61] exited with preempt_count 1
[1317343.519216] ------------[ cut here ]------------
[1317343.519561] kernel BUG at 
/build/buildd/linux-source-2.6.22-2.6.22/debian/build/custom-source-xen/arch/i386/mm/highmem-xen.c:38!
[1317343.519860] invalid opcode: 0000 [#2]
[1317343.520043] SMP 
[1317343.520655] Modules linked in: ipv6 evdev 8250 serial_core ext3 jbd 
mbcache dm_mirror dm_snapshot dm_mod fuse apparmor commoncap
[1317343.522855] CPU:    0
[1317343.522856] EIP:    0061:[<c0118462>]    Not tainted VLI
[1317343.522858] EFLAGS: 00010202   (2.6.22-14-xen #1)
[1317343.523189] EIP is at kmap_atomic_prot+0x172/0x180
[1317343.523310] eax: 601ed061   ebx: c1fa69a0   ecx: 00000000   edx: c19c1fb0
[1317343.523429] esi: 00000061   edi: 80000000   ebp: 00000007   esp: ed485e18
[1317343.523545] ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0069
[1317343.523654] Process klogd (pid: 3209, ti=ed484000 task=e9fdca60 
task.ti=ed484000)
[1317343.523775] Stack: ed485e58 ed485f24 00000000 ed485e7c c19c1fb0 00000000 
e9f94700 00000000 
[1317343.525308]        e9f9fe40 00000000 60e32067 00000000 ed485efc c01644e9 
00000061 80000000 
[1317343.526927]        00000000 c031ebe0 ed485ed8 ed485f60 c0423d80 c0284b5d 
b7e6fef0 e9ef8948 
[1317343.528442] Call Trace:
[1317343.528840]  [<c01644e9>] __handle_mm_fault+0x179/0x1a80
[1317343.529354]  [<c0284b5d>] sock_aio_write+0x11d/0x130
[1317343.529782]  [<c017a6d5>] do_sync_write+0xd5/0x120
[1317343.530134]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.531151]  [<c0302bbe>] do_page_fault+0x2fe/0xdf0
[1317343.531674]  [<c011531b>] check_pgt_cache+0x1b/0x20
[1317343.532049]  [<c017b027>] vfs_write+0x127/0x170
[1317343.532479]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.532842]  [<c0301685>] error_code+0x35/0x40
[1317343.533181]  =======================
[1317343.533358] Code: 0c 89 f9 89 f3 25 ff 0f 00 00 30 d2 09 c3 09 d1 89 5c 24 
18 89 4c 24 1c e9 4d ff ff ff 83 c4 24 89 d8 5b 5e 5f 5d e9 5e 5c 04 00 <0f> 0b 
eb fe 0f 0b eb fe 8d b6 00 00 00 00 53 83 ec 08 8b 1d 5c 
[1317343.543230] EIP: [<c0118462>] kmap_atomic_prot+0x172/0x180 SS:ESP 
0069:ed485e18
[1317343.544546] note: klogd[3209] exited with preempt_count 1
[1317343.544878] BUG: scheduling while atomic: klogd/0x10000001/3209
[1317343.545048]  [<c02ff3f0>] schedule+0x550/0x900
[1317343.545435]  [<c0258b7a>] force_evtchn_callback+0xa/0x10
[1317343.545870]  [<c0122450>] vprintk+0x300/0x3c0
[1317343.546276]  [<c011d0a6>] __cond_resched+0x16/0x40
[1317343.546728]  [<c02ff81a>] cond_resched+0x2a/0x40
[1317343.547116]  [<c0139c78>] down_read+0x8/0x20
[1317343.547502]  [<c0145c49>] acct_collect+0x39/0x180
[1317343.547866]  [<c012506c>] do_exit+0x10c/0x850
[1317343.548312]  [<c01061ff>] die+0x25f/0x260
[1317343.548725]  [<c0106520>] do_invalid_op+0x0/0x90
[1317343.549124]  [<c01065a1>] do_invalid_op+0x81/0x90
[1317343.549538]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.549946]  [<c017676c>] __slab_alloc+0x2dc/0x520
[1317343.550314]  [<c011a059>] __wake_up_common+0x39/0x60
[1317343.550651]  [<c0301685>] error_code+0x35/0x40
[1317343.551086]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.551483]  [<c01644e9>] __handle_mm_fault+0x179/0x1a80
[1317343.551865]  [<c0284b5d>] sock_aio_write+0x11d/0x130
[1317343.552308]  [<c017a6d5>] do_sync_write+0xd5/0x120
[1317343.552786]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.553190]  [<c0302bbe>] do_page_fault+0x2fe/0xdf0
[1317343.553565]  [<c011531b>] check_pgt_cache+0x1b/0x20
[1317343.553998]  [<c017b027>] vfs_write+0x127/0x170
[1317343.554435]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.554808]  [<c0301685>] error_code+0x35/0x40
[1317343.555182]  =======================
[1317343.570619] ------------[ cut here ]------------
[1317343.570640] kernel BUG at 
/build/buildd/linux-source-2.6.22-2.6.22/debian/build/custom-source-xen/arch/i386/mm/highmem-xen.c:38!
[1317343.570649] invalid opcode: 0000 [#3]
[1317343.570652] SMP 
[1317343.570658] Modules linked in: ipv6 evdev 8250 serial_core ext3 jbd 
mbcache dm_mirror dm_snapshot dm_mod fuse apparmor commoncap
[1317343.570680] CPU:    0
[1317343.570681] EIP:    0061:[<c0118462>]    Not tainted VLI
[1317343.570682] EFLAGS: 00010202   (2.6.22-14-xen #1)
[1317343.570699] EIP is at kmap_atomic_prot+0x172/0x180
[1317343.570704] eax: 601ed061   ebx: c1fa6340   ecx: 00000000   edx: c19c1fb0
[1317343.570710] esi: 00000061   edi: 80000000   ebp: 00000007   esp: e99afe18
[1317343.570716] ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0069
[1317343.570722] Process syslogd (pid: 3186, ti=e99ae000 task=c1788000 
task.ti=e99ae000)
[1317343.570727] Stack: e99afe4c 00000057 e9f3ce60 e99afe88 c19c1fb0 00000006 
c01543ce e99afed0 
[1317343.570742]        00000001 00000000 60e65067 00000000 e99afefc c01644e9 
00000061 80000000 
[1317343.570756]        e9f5c500 e9f3cdf0 ee0c05c0 000774c2 c0423d80 e99afe88 
b7ee80d0 e989f370 
[1317343.570770] Call Trace:
[1317343.570776]  [<c01543ce>] generic_file_aio_write+0x5e/0xd0
[1317343.570787]  [<c01644e9>] __handle_mm_fault+0x179/0x1a80
[1317343.570797]  [<ee0c05c0>] ext3_file_write+0x30/0xc0 [ext3]
[1317343.570818]  [<c01365d0>] autoremove_wake_function+0x0/0x50
[1317343.570829]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.570839]  [<c0302bbe>] do_page_fault+0x2fe/0xdf0
[1317343.570848]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.570854]  [<c0301685>] error_code+0x35/0x40
[1317343.570862]  =======================
[1317343.570866] Code: 0c 89 f9 89 f3 25 ff 0f 00 00 30 d2 09 c3 09 d1 89 5c 24 
18 89 4c 24 1c e9 4d ff ff ff 83 c4 24 89 d8 5b 5e 5f 5d e9 5e 5c 04 00 <0f> 0b 
eb fe 0f 0b eb fe 8d b6 00 00 00 00 53 83 ec 08 8b 1d 5c 
[1317343.570926] EIP: [<c0118462>] kmap_atomic_prot+0x172/0x180 SS:ESP 
0069:e99afe18
[1317343.570940] note: syslogd[3186] exited with preempt_count 1
[1317343.570948] BUG: scheduling while atomic: syslogd/0x10000001/3186
[1317343.570953]  [<c02ff3f0>] schedule+0x550/0x900
[1317343.570959]  [<c0121f87>] release_console_sem+0x207/0x230
[1317343.570968]  [<c0122331>] vprintk+0x1e1/0x3c0
[1317343.570975]  [<c011d0a6>] __cond_resched+0x16/0x40
[1317343.570981]  [<c02ff81a>] cond_resched+0x2a/0x40
[1317343.570987]  [<c0139c78>] down_read+0x8/0x20
[1317343.570994]  [<c0145c49>] acct_collect+0x39/0x180
[1317343.571003]  [<c012506c>] do_exit+0x10c/0x850
[1317343.571009]  [<c011a628>] __wake_up+0x38/0x50
[1317343.571017]  [<c01061ff>] die+0x25f/0x260
[1317343.571024]  [<c0106520>] do_invalid_op+0x0/0x90
[1317343.571030]  [<c01065a1>] do_invalid_op+0x81/0x90
[1317343.571037]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.571043]  [<c040ae00>] smp_prepare_cpus+0xe0/0x1e0
[1317343.571051]  [<ee0ca1a4>] __ext3_journal_stop+0x24/0x50 [ext3]
[1317343.571065]  [<c0198a7c>] __mark_inode_dirty+0x5c/0x190
[1317343.571073]  [<c040ae00>] smp_prepare_cpus+0xe0/0x1e0
[1317343.571079]  [<c0126df1>] current_fs_time+0x41/0x50
[1317343.571086]  [<c01540a5>] __generic_file_aio_write_nolock+0x275/0x540
[1317343.571094]  [<c0301685>] error_code+0x35/0x40
[1317343.571101]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.571107]  [<c01543ce>] generic_file_aio_write+0x5e/0xd0
[1317343.571114]  [<c01644e9>] __handle_mm_fault+0x179/0x1a80
[1317343.571121]  [<ee0c05c0>] ext3_file_write+0x30/0xc0 [ext3]
[1317343.571133]  [<c01365d0>] autoremove_wake_function+0x0/0x50
[1317343.571141]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.571147]  [<c0302bbe>] do_page_fault+0x2fe/0xdf0
[1317343.571155]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.571161]  [<c0301685>] error_code+0x35/0x40
[1317343.571168]  =======================
[1317343.575564] ------------[ cut here ]------------
[1317343.575573] kernel BUG at 
/build/buildd/linux-source-2.6.22-2.6.22/debian/build/custom-source-xen/arch/i386/mm/highmem-xen.c:38!
[1317343.575580] invalid opcode: 0000 [#4]
[1317343.575584] SMP 
[1317343.575588] Modules linked in: ipv6 evdev 8250 serial_core ext3 jbd 
mbcache dm_mirror dm_snapshot dm_mod fuse apparmor commoncap
[1317343.575606] CPU:    0
[1317343.575607] EIP:    0061:[<c0118462>]    Not tainted VLI
[1317343.575609] EFLAGS: 00010202   (2.6.22-14-xen #1)
[1317343.575620] EIP is at kmap_atomic_prot+0x172/0x180
[1317343.575625] eax: 601ed061   ebx: c1fa6300   ecx: 00000000   edx: c19c1fb0
[1317343.575630] esi: 00000063   edi: 80000000   ebp: 00000007   esp: e99afb8c
[1317343.575635] ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0069
[1317343.575640] Process syslogd (pid: 3186, ti=e99ae000 task=c1788000 
task.ti=e99ae000)
[1317343.575645] Stack: 00000000 c0122331 e99afbba c037f8e8 c19c1fb0 001419df 
0008b720 00000034 
[1317343.575657]        220b56c1 00000000 60e67067 00000000 c0437158 c016078d 
00000063 80000000 
[1317343.575670]        c000205d c012252b c037b246 0804efff e99afbe8 c0105afa 
0002f198 00000000 
[1317343.575682] Call Trace:
[1317343.575687]  [<c0122331>] vprintk+0x1e1/0x3c0
[1317343.575694]  [<c016078d>] unmap_vmas+0x4cd/0xbf0
[1317343.575701]  [<c012252b>] printk+0x1b/0x20
[1317343.575707]  [<c0105afa>] print_trace_address+0x1a/0x30
[1317343.575715]  [<c040f000>] fib_rules_init+0x30/0x60
[1317343.575724]  [<c040f010>] fib_rules_init+0x40/0x60
[1317343.575731]  [<c0167757>] exit_mmap+0x77/0xf0
[1317343.575738]  [<c011f8e8>] mmput+0x38/0xa0
[1317343.575744]  [<c0125081>] do_exit+0x121/0x850
[1317343.575750]  [<c011a628>] __wake_up+0x38/0x50
[1317343.575757]  [<c01061ff>] die+0x25f/0x260
[1317343.575763]  [<c0106520>] do_invalid_op+0x0/0x90
[1317343.575770]  [<c01065a1>] do_invalid_op+0x81/0x90
[1317343.575776]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.575783]  [<c040ae00>] smp_prepare_cpus+0xe0/0x1e0
[1317343.575789]  [<ee0ca1a4>] __ext3_journal_stop+0x24/0x50 [ext3]
[1317343.575803]  [<c0198a7c>] __mark_inode_dirty+0x5c/0x190
[1317343.575810]  [<c040ae00>] smp_prepare_cpus+0xe0/0x1e0
[1317343.595308]  [<c0126df1>] current_fs_time+0x41/0x50
[1317343.595660]  [<c01540a5>] __generic_file_aio_write_nolock+0x275/0x540
[1317343.596068]  [<c0301685>] error_code+0x35/0x40
[1317343.596491]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.596855]  [<c01543ce>] generic_file_aio_write+0x5e/0xd0
[1317343.597219]  [<c01644e9>] __handle_mm_fault+0x179/0x1a80
[1317343.597533]  [<ee0c05c0>] ext3_file_write+0x30/0xc0 [ext3]
[1317343.597949]  [<c01365d0>] autoremove_wake_function+0x0/0x50
[1317343.598319]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.598657]  [<c0302bbe>] do_page_fault+0x2fe/0xdf0
[1317343.599030]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.599329]  [<c0301685>] error_code+0x35/0x40
[1317343.599676]  =======================
[1317343.599847] Code: 0c 89 f9 89 f3 25 ff 0f 00 00 30 d2 09 c3 09 d1 89 5c 24 
18 89 4c 24 1c e9 4d ff ff ff 83 c4 24 89 d8 5b 5e 5f 5d e9 5e 5c 04 00 <0f> 0b 
eb fe 0f 0b eb fe 8d b6 00 00 00 00 53 83 ec 08 8b 1d 5c 
[1317343.609854] EIP: [<c0118462>] kmap_atomic_prot+0x172/0x180 SS:ESP 
0069:e99afb8c
[1317343.611340] Fixing recursive fault but reboot is needed!
[1317343.611667] BUG: scheduling while atomic: syslogd/0x00000002/3186
[1317343.612089]  [<c02ff3f0>] schedule+0x550/0x900
[1317343.612559]  [<c0259946>] evtchn_do_upcall+0xb6/0xf0
[1317343.612947]  [<c01255bb>] do_exit+0x65b/0x850
[1317343.613353]  [<c01061ff>] die+0x25f/0x260
[1317343.613779]  [<c0106520>] do_invalid_op+0x0/0x90
[1317343.614168]  [<c01065a1>] do_invalid_op+0x81/0x90
[1317343.614582]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.614979]  [<c01040dd>] __switch_to+0x23d/0x490
[1317343.615378]  [<c02483fa>] scrup+0x7a/0xf0
[1317343.615775]  [<c0301685>] error_code+0x35/0x40
[1317343.616288]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.616778]  [<c0122331>] vprintk+0x1e1/0x3c0
[1317343.617181]  [<c016078d>] unmap_vmas+0x4cd/0xbf0
[1317343.617537]  [<c012252b>] printk+0x1b/0x20
[1317343.617948]  [<c0105afa>] print_trace_address+0x1a/0x30
[1317343.618341]  [<c040f000>] fib_rules_init+0x30/0x60
[1317343.618717]  [<c040f010>] fib_rules_init+0x40/0x60
[1317343.619045]  [<c0167757>] exit_mmap+0x77/0xf0
[1317343.619436]  [<c011f8e8>] mmput+0x38/0xa0
[1317343.619775]  [<c0125081>] do_exit+0x121/0x850
[1317343.620165]  [<c011a628>] __wake_up+0x38/0x50
[1317343.620638]  [<c01061ff>] die+0x25f/0x260
[1317343.620977]  [<c0106520>] do_invalid_op+0x0/0x90
[1317343.621327]  [<c01065a1>] do_invalid_op+0x81/0x90
[1317343.621644]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.622039]  [<c040ae00>] smp_prepare_cpus+0xe0/0x1e0
[1317343.622395]  [<ee0ca1a4>] __ext3_journal_stop+0x24/0x50 [ext3]
[1317343.622670]  [<c0198a7c>] __mark_inode_dirty+0x5c/0x190
[1317343.622932]  [<c040ae00>] smp_prepare_cpus+0xe0/0x1e0
[1317343.623182]  [<c0126df1>] current_fs_time+0x41/0x50
[1317343.623442]  [<c01540a5>] __generic_file_aio_write_nolock+0x275/0x540
[1317343.623724]  [<c0301685>] error_code+0x35/0x40
[1317343.623981]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.624303]  [<c01543ce>] generic_file_aio_write+0x5e/0xd0
[1317343.624606]  [<c01644e9>] __handle_mm_fault+0x179/0x1a80
[1317343.624885]  [<ee0c05c0>] ext3_file_write+0x30/0xc0 [ext3]
[1317343.625153]  [<c01365d0>] autoremove_wake_function+0x0/0x50
[1317343.625431]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.625686]  [<c0302bbe>] do_page_fault+0x2fe/0xdf0
[1317343.625984]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.626249]  [<c0301685>] error_code+0x35/0x40
[1317343.626505]  =======================
[1317343.674187] ------------[ cut here ]------------
[1317343.674549] kernel BUG at 
/build/buildd/linux-source-2.6.22-2.6.22/debian/build/custom-source-xen/arch/i386/mm/highmem-xen.c:38!
[1317343.674875] invalid opcode: 0000 [#5]
[1317343.675035] SMP 
[1317343.675458] Modules linked in: ipv6 evdev 8250 serial_core ext3 jbd 
mbcache dm_mirror dm_snapshot dm_mod fuse apparmor commoncap
[1317343.677673] CPU:    0
[1317343.677674] EIP:    0061:[<c0118462>]    Not tainted VLI
[1317343.677676] EFLAGS: 00010202   (2.6.22-14-xen #1)
[1317343.678174] EIP is at kmap_atomic_prot+0x172/0x180
[1317343.678294] eax: 601ed061   ebx: c1fa6980   ecx: 00000000   edx: c19c1fb0
[1317343.678409] esi: 00000063   edi: 80000000   ebp: 00000007   esp: ed485b8c
[1317343.678552] ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0069
[1317343.678666] Process klogd (pid: 3209, ti=ed484000 task=e9fdca60 
task.ti=ed484000)
[1317343.678883] Stack: c043bfd9 c0122450 ed485bba c037f8e8 c19c1fb0 001419df 
000878ae 00000034 
[1317343.680574]        211768d6 00000000 60e33067 00000000 c0437158 c016078d 
00000063 80000000 
[1317343.682062]        c000205d c012252b c037b246 0804cfff ed485be8 c0105afa 
0002f1cc 00000000 
[1317343.683491] Call Trace:
[1317343.683787]  [<c0122450>] vprintk+0x300/0x3c0
[1317343.684159]  [<c016078d>] unmap_vmas+0x4cd/0xbf0
[1317343.684626]  [<c012252b>] printk+0x1b/0x20
[1317343.685241]  [<c0105afa>] print_trace_address+0x1a/0x30
[1317343.685558]  [<c0167757>] exit_mmap+0x77/0xf0
[1317343.685971]  [<c011f8e8>] mmput+0x38/0xa0
[1317343.686317]  [<c0125081>] do_exit+0x121/0x850
[1317343.686677]  [<c01061ff>] die+0x25f/0x260
[1317343.687061]  [<c0106520>] do_invalid_op+0x0/0x90
[1317343.687384]  [<c01065a1>] do_invalid_op+0x81/0x90
[1317343.687718]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.688054]  [<c017676c>] __slab_alloc+0x2dc/0x520
[1317343.688454]  [<c011a059>] __wake_up_common+0x39/0x60
[1317343.688765]  [<c0301685>] error_code+0x35/0x40
[1317343.689154]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.689489]  [<c01644e9>] __handle_mm_fault+0x179/0x1a80
[1317343.689891]  [<c0284b5d>] sock_aio_write+0x11d/0x130
[1317343.690291]  [<c017a6d5>] do_sync_write+0xd5/0x120
[1317343.690678]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.691021]  [<c0302bbe>] do_page_fault+0x2fe/0xdf0
[1317343.691393]  [<c011531b>] check_pgt_cache+0x1b/0x20
[1317343.691756]  [<c017b027>] vfs_write+0x127/0x170
[1317343.692146]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.692616]  [<c0301685>] error_code+0x35/0x40
[1317343.692964]  =======================
[1317343.693118] Code: 0c 89 f9 89 f3 25 ff 0f 00 00 30 d2 09 c3 09 d1 89 5c 24 
18 89 4c 24 1c e9 4d ff ff ff 83 c4 24 89 d8 5b 5e 5f 5d e9 5e 5c 04 00 <0f> 0b 
eb fe 0f 0b eb fe 8d b6 00 00 00 00 53 83 ec 08 8b 1d 5c 
[1317343.703377] EIP: [<c0118462>] kmap_atomic_prot+0x172/0x180 SS:ESP 
0069:ed485b8c
[1317343.704142] Fixing recursive fault but reboot is needed!
[1317343.705423] BUG: scheduling while atomic: klogd/0x00000002/3209
[1317343.705892]  [<c02ff3f0>] schedule+0x550/0x900
[1317343.706318]  [<c0259946>] evtchn_do_upcall+0xb6/0xf0
[1317343.706718]  [<c01255bb>] do_exit+0x65b/0x850
[1317343.707125]  [<c01061ff>] die+0x25f/0x260
[1317343.707516]  [<c0106520>] do_invalid_op+0x0/0x90
[1317343.707870]  [<c01065a1>] do_invalid_op+0x81/0x90
[1317343.708336]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.708751]  [<c01040dd>] __switch_to+0x23d/0x490
[1317343.709076]  [<c0106e20>] do_IRQ+0x40/0x70
[1317343.709495]  [<c0259946>] evtchn_do_upcall+0xb6/0xf0
[1317343.710004]  [<c0301685>] error_code+0x35/0x40
[1317343.710411]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.710426]  [<c0122450>] vprintk+0x300/0x3c0
[1317343.710436]  [<c016078d>] unmap_vmas+0x4cd/0xbf0
[1317343.710445]  [<c012252b>] printk+0x1b/0x20
[1317343.710451]  [<c0105afa>] print_trace_address+0x1a/0x30
[1317343.710463]  [<c0167757>] exit_mmap+0x77/0xf0
[1317343.710470]  [<c011f8e8>] mmput+0x38/0xa0
[1317343.710476]  [<c0125081>] do_exit+0x121/0x850
[1317343.710484]  [<c01061ff>] die+0x25f/0x260
[1317343.710491]  [<c0106520>] do_invalid_op+0x0/0x90
[1317343.710497]  [<c01065a1>] do_invalid_op+0x81/0x90
[1317343.710504]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.710512]  [<c017676c>] __slab_alloc+0x2dc/0x520
[1317343.710522]  [<c011a059>] __wake_up_common+0x39/0x60
[1317343.710529]  [<c0301685>] error_code+0x35/0x40
[1317343.710537]  [<c0118462>] kmap_atomic_prot+0x172/0x180
[1317343.710545]  [<c01644e9>] __handle_mm_fault+0x179/0x1a80
[1317343.710552]  [<c0284b5d>] sock_aio_write+0x11d/0x130
[1317343.710564]  [<c017a6d5>] do_sync_write+0xd5/0x120
[1317343.710572]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.710579]  [<c0302bbe>] do_page_fault+0x2fe/0xdf0
[1317343.710586]  [<c011531b>] check_pgt_cache+0x1b/0x20
[1317343.710593]  [<c017b027>] vfs_write+0x127/0x170
[1317343.710600]  [<c03028c0>] do_page_fault+0x0/0xdf0
[1317343.710606]  [<c0301685>] error_code+0x35/0x40
[1317343.710614]  =======================

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