[ENBD] Kernel oops (nbd-2.4.31) or failed connections

Anders Blomdell anders.blomdell at control.lth.se
Wed May 19 02:16:07 MDT 2004 

>> May 18 16:15:47 newsperry-01 kernel:  <1>Unable to handle kernel NULL
>> pointer dereference at virtual address 00000008
>
> This is a straightforward "norwege, nul points". Null pointer
> dereference.
That much I know, I was hoping for some deeper insight.
> You need to pass this oops through ksymoops. Can you do that?

OK, hare comes log (4 clients started, all dies the same horrible death)

May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #7004[0]: enbd_init 
Network Block Device support by pavel at elf.mj.gts.cz
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #7005[0]: enbd_init 
Network Block Device port to 2.0 by ptb at it.uc3m.es
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #7007[0]: enbd_init 
Network Block Device move networking to user space by amarin at it.uc3m.es
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #7009[0]: enbd_init 
Enhanced Network Block Device 2.4.31 Date: tis maj 18 16:10:24 CEST 
2004 by ptb at it.uc3m.es
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #7027[0]: enbd_init 
registered ENBD at major 43
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client says 
target 0 is newsperry-02:30000
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client channels 
is 2
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client 
identifier is 1_30000
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client cksum 
flag is 1
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client 
negotiation timeout is 0
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client says 
blksize is 1024
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client pulse 
intvl is 60
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client errors 
flag is 1
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1306[0]: enbd_open 
setup device 0
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
opens device /dev/nda again
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager opened NBD device /dev/nda (2b00)
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1353[0]: enbd_open 
reset speed counters to zero for device nda
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) left 
kernel bdflush sync boundary at 80%
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1367[0]: enbd_open 
initialized device nda
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) left 
kernel bdflush async boundary at 25%
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager detaches from shell
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager made pidfile /var/run/enbd-client-1_30000.pid with pid 2460
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
starts introduction sequence on newsperry-02:30000
May 19 08:49:57 newsperry-01 enbd-client: stream  2460: <# 489> 
connect_sock client socket connect failed Connection refused on port 
30000
May 19 08:49:57 newsperry-01 enbd-client: enbd-client  2460: <#2747> 
introduction client (-1) introduction sequence ends FAIL
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client says 
target 0 is newsperry-02:30010
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client channels 
is 2
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client 
identifier is 1_30010
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client cksum 
flag is 1
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client 
negotiation timeout is 0
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client says 
blksize is 1024
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client pulse 
intvl is 60
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client errors 
flag is 1
May 19 08:49:57 newsperry-01 enbd-client: enbd-client  2460: <#2810> 
introduction client (-1) introduction bails out on newsperry-02:30000
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager waits 10s after 0s before retry 1
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1306[1]: enbd_open 
setup device 2
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1353[1]: enbd_open 
reset speed counters to zero for device ndc
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1367[1]: enbd_open 
initialized device ndc
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
opens device /dev/ndc again
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager opened NBD device /dev/ndc (2b20)
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) left 
kernel bdflush sync boundary at 80%
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) left 
kernel bdflush async boundary at 25%
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager detaches from shell
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager made pidfile /var/run/enbd-client-1_30010.pid with pid 2463
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
starts introduction sequence on newsperry-02:30010
May 19 08:49:57 newsperry-01 enbd-client: stream  2463: <# 489> 
connect_sock client socket connect failed Connection refused on port 
30010
May 19 08:49:57 newsperry-01 enbd-client: enbd-client  2463: <#2747> 
introduction client (-1) introduction sequence ends FAIL
May 19 08:49:57 newsperry-01 enbd-client: enbd-client  2463: <#2810> 
introduction client (-1) introduction bails out on newsperry-02:30010
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager waits 10s after 0s before retry 1
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client says 
target 0 is newsperry-03:30000
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client channels 
is 2
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client 
identifier is 2_30000
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client cksum 
flag is 1
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client 
negotiation timeout is 0
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client says 
blksize is 1024
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client pulse 
intvl is 60
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client errors 
flag is 1
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1306[2]: enbd_open 
setup device 1
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1353[2]: enbd_open 
reset speed counters to zero for device ndb
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1367[2]: enbd_open 
initialized device ndb
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
opens device /dev/ndb again
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager opened NBD device /dev/ndb (2b10)
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) left 
kernel bdflush sync boundary at 80%
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) left 
kernel bdflush async boundary at 25%
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager detaches from shell
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager made pidfile /var/run/enbd-client-2_30000.pid with pid 2466
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
starts introduction sequence on newsperry-03:30000
May 19 08:49:57 newsperry-01 enbd-client: stream  2466: <# 489> 
connect_sock client socket connect failed Connection refused on port 
30000
May 19 08:49:57 newsperry-01 enbd-client: enbd-client  2466: <#2747> 
introduction client (-1) introduction sequence ends FAIL
May 19 08:49:57 newsperry-01 enbd-client: enbd-client  2466: <#2810> 
introduction client (-1) introduction bails out on newsperry-03:30000
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager waits 10s after 0s before retry 1
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client says 
target 0 is newsperry-03:30010
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client channels 
is 2
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client 
identifier is 2_30010
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client cksum 
flag is 1
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client 
negotiation timeout is 0
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client says 
blksize is 1024
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client pulse 
intvl is 60
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client errors 
flag is 1
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
opens device /dev/ndd again
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1306[3]: enbd_open 
setup device 3
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1353[3]: enbd_open 
reset speed counters to zero for device ndd
May 19 08:49:57 newsperry-01 kernel: ENBD enbd.c #1367[3]: enbd_open 
initialized device ndd
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager opened NBD device /dev/ndd (2b30)
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) left 
kernel bdflush sync boundary at 80%
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) left 
kernel bdflush async boundary at 25%
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager detaches from shell
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager made pidfile /var/run/enbd-client-2_30010.pid with pid 2469
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
starts introduction sequence on newsperry-03:30010
May 19 08:49:57 newsperry-01 enbd-client: stream  2469: <# 489> 
connect_sock client socket connect failed Connection refused on port 
30010
May 19 08:49:57 newsperry-01 enbd-client: enbd-client  2469: <#2747> 
introduction client (-1) introduction sequence ends FAIL
May 19 08:49:57 newsperry-01 enbd-client: enbd-client  2469: <#2810> 
introduction client (-1) introduction bails out on newsperry-03:30010
May 19 08:49:57 newsperry-01 enbd-client: enbd-client: client (-1) 
manager waits 10s after 0s before retry 1
May 19 08:50:02 newsperry-01 enbd-cstatd: enbd-cstatd: no client 
configured to servers 127.0.0.1:30000 ...
May 19 08:50:02 newsperry-01 enbd-cstatd: enbd-cstatd: no client 
configured to servers 127.0.0.1:30010 ...
May 19 08:50:06 newsperry-01 enbd-cstatd: enbd-cstatd: no client 
configured to servers 127.0.0.1:30000 ...
May 19 08:50:06 newsperry-01 enbd-cstatd: enbd-cstatd: no client 
configured to servers 127.0.0.1:30010 ...
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
starts introduction sequence on newsperry-02:30000
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
size 1011677184
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
starts introduction sequence on newsperry-02:30010
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
size 1011677184
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
starts introduction sequence on newsperry-03:30000
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
size 1011677184
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
signature [1_30000], had []
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
negotiated blksize 1024
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
negotiated pulse_intvl 60
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
session port 30001 ok
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
introduction sequence ends ok
May 19 08:50:07 newsperry-01 kernel: Unable to handle kernel NULL 
pointer dereference at virtual address 00000008
May 19 08:50:07 newsperry-01 kernel:  printing eip:
May 19 08:50:07 newsperry-01 kernel: f8a0a7f2
May 19 08:50:07 newsperry-01 kernel: *pde = 00000000
May 19 08:50:07 newsperry-01 kernel: Oops: 0002
May 19 08:50:07 newsperry-01 kernel: CPU:    1
May 19 08:50:07 newsperry-01 kernel: EIP:    0010:[<f8a0a7f2>]    Not 
tainted
May 19 08:50:07 newsperry-01 kernel: EFLAGS: 00010293
May 19 08:50:07 newsperry-01 kernel: eax: 00000000   ebx: f6b23ae0   
ecx: f6b23ae0   edx: 00000000
May 19 08:50:07 newsperry-01 kernel: esi: 00000000   edi: 00000000   
ebp: f5cfbf7c   esp: f5cfbe94
May 19 08:50:07 newsperry-01 kernel: ds: 0018   es: 0018   ss: 0018
May 19 08:50:07 newsperry-01 kernel: Process enbd-client (pid: 2460, 
stackpage=f5cfb000)
May 19 08:50:07 newsperry-01 kernel: Stack: c013228f f6909360 0804c000 
00000000 00000058 08061458 00000000 00000058
May 19 08:50:07 newsperry-01 kernel:        00000000 00000000 c1b1b510 
f744d480 0804cdd0 00000000 f6909360 c01324f5
May 19 08:50:07 newsperry-01 kernel:        f744d480 f6909360 00000000 
00000000 f6772130 c02d02dc f744d480 f6909360
May 19 08:50:07 newsperry-01 kernel: Call Trace:    [<c013228f>] 
[<c01324f5>] [<c011c298>] [<c012c9f1>] [<c012cd9a>]
May 19 08:50:07 newsperry-01 kernel:   [<c014f1d5>] [<c0158496>] 
[<c010929f>]
May 19 08:50:07 newsperry-01 kernel:
May 19 08:50:07 newsperry-01 kernel: Code: c7 40 08 00 00 00 00 89 f8 
c1 e0 04 8b 95 60 ff ff ff 29 c2
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
starts introduction sequence on newsperry-03:30010
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
signature [1_30010], had []
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
negotiated blksize 1024
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
negotiated pulse_intvl 60
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
session port 30011 ok
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
introduction sequence ends ok
May 19 08:50:07 newsperry-01 kernel:  <1>Unable to handle kernel NULL 
pointer dereference at virtual address 00000008
May 19 08:50:07 newsperry-01 kernel:  printing eip:
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
size 1011677184
May 19 08:50:07 newsperry-01 kernel: f8a0a7f2
May 19 08:50:07 newsperry-01 kernel: *pde = 00000000
May 19 08:50:07 newsperry-01 kernel: Oops: 0002
May 19 08:50:07 newsperry-01 kernel: CPU:    1
May 19 08:50:07 newsperry-01 kernel: EIP:    0010:[<f8a0a7f2>]    Not 
tainted
May 19 08:50:07 newsperry-01 kernel: EFLAGS: 00010297
May 19 08:50:07 newsperry-01 kernel: eax: 00000000   ebx: f6b0c360   
ecx: f6b0c360   edx: 00000020
May 19 08:50:07 newsperry-01 kernel: esi: 00000000   edi: 00000002   
ebp: f5ce9f7c   esp: f5ce9e94
May 19 08:50:07 newsperry-01 kernel: ds: 0018   es: 0018   ss: 0018
May 19 08:50:07 newsperry-01 kernel: Process enbd-client (pid: 2463, 
stackpage=f5ce9000)
May 19 08:50:07 newsperry-01 kernel: Stack: c013228f f684b840 0804c000 
00000000 00000058 08061458 00000000 00000058
May 19 08:50:07 newsperry-01 kernel:        00000000 00000000 c1b1b510 
f7fc9a80 0804cdd0 00000000 f684b840 c01324f5
May 19 08:50:07 newsperry-01 kernel:        f7fc9a80 f684b840 00000020 
00000000 f6a14130 c02d02dc f7fc9a80 f684b840
May 19 08:50:07 newsperry-01 kernel: Call Trace:    [<c013228f>] 
[<c01324f5>] [<c011c298>] [<c012c9f1>] [<c012cd9a>]
May 19 08:50:07 newsperry-01 kernel:   [<c014f1d5>] [<c0158496>] 
[<c010929f>]
May 19 08:50:07 newsperry-01 kernel:
May 19 08:50:07 newsperry-01 kernel: Code: c7 40 08 00 00 00 00 89 f8 
c1 e0 04 8b 95 60 ff ff ff 29 c2
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
signature [2_30000], had []
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
negotiated blksize 1024
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
negotiated pulse_intvl 60
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
session port 30001 ok
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
introduction sequence ends ok
May 19 08:50:07 newsperry-01 kernel:  <1>Unable to handle kernel NULL 
pointer dereference at virtual address 00000008
May 19 08:50:07 newsperry-01 kernel:  printing eip:
May 19 08:50:07 newsperry-01 kernel: f8a0a7f2
May 19 08:50:07 newsperry-01 kernel: *pde = 00000000
May 19 08:50:07 newsperry-01 kernel: Oops: 0002
May 19 08:50:07 newsperry-01 kernel: CPU:    1
May 19 08:50:07 newsperry-01 kernel: EIP:    0010:[<f8a0a7f2>]    Not 
tainted
May 19 08:50:07 newsperry-01 kernel: EFLAGS: 00010293
May 19 08:50:07 newsperry-01 kernel: eax: 00000000   ebx: f6b0f720   
ecx: f6b0f720   edx: 00000010
May 19 08:50:07 newsperry-01 kernel: esi: 00000000   edi: 00000001   
ebp: f5cd1f7c   esp: f5cd1e94
May 19 08:50:07 newsperry-01 kernel: ds: 0018   es: 0018   ss: 0018
May 19 08:50:07 newsperry-01 kernel: Process enbd-client (pid: 2466, 
stackpage=f5cd1000)
May 19 08:50:07 newsperry-01 kernel: Stack: c013228f f684bde0 0804c000 
00000000 00000058 08061458 00000000 00000058
May 19 08:50:07 newsperry-01 kernel:        00000000 00000000 c1b1b510 
f729ef00 0804cdd0 00000000 f684bde0 c01324f5
May 19 08:50:07 newsperry-01 kernel:        f729ef00 f684bde0 00000010 
00000000 f6776130 00000145 f729ef00 f684bde0
May 19 08:50:07 newsperry-01 kernel: Call Trace:    [<c013228f>] 
[<c01324f5>] [<c011c298>] [<c012c9f1>] [<c012cd9a>]
May 19 08:50:07 newsperry-01 kernel:   [<c014f1d5>] [<c0158496>] 
[<c010929f>]
May 19 08:50:07 newsperry-01 kernel:
May 19 08:50:07 newsperry-01 kernel: Code: c7 40 08 00 00 00 00 89 f8 
c1 e0 04 8b 95 60 ff ff ff 29 c2
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
signature [2_30010], had []
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
negotiated blksize 1024
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
negotiated pulse_intvl 60
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) got 
session port 30011 ok
May 19 08:50:07 newsperry-01 enbd-client: enbd-client: client (-1) 
introduction sequence ends ok
May 19 08:50:07 newsperry-01 kernel:  <1>Unable to handle kernel NULL 
pointer dereference at virtual address 00000008
May 19 08:50:07 newsperry-01 kernel:  printing eip:
May 19 08:50:07 newsperry-01 kernel: f8a0a7f2
May 19 08:50:07 newsperry-01 kernel: *pde = 00000000
May 19 08:50:07 newsperry-01 kernel: Oops: 0002
May 19 08:50:07 newsperry-01 kernel: CPU:    1
May 19 08:50:07 newsperry-01 kernel: EIP:    0010:[<f8a0a7f2>]    Not 
tainted
May 19 08:50:07 newsperry-01 kernel: EFLAGS: 00010293
May 19 08:50:07 newsperry-01 kernel: eax: 00000000   ebx: f6b07dc0   
ecx: f6b07dc0   edx: 00000030
May 19 08:50:07 newsperry-01 kernel: esi: 00000000   edi: 00000003   
ebp: f5cbdf7c   esp: f5cbde94
May 19 08:50:07 newsperry-01 kernel: ds: 0018   es: 0018   ss: 0018
May 19 08:50:07 newsperry-01 kernel: Process enbd-client (pid: 2469, 
stackpage=f5cbd000)
May 19 08:50:07 newsperry-01 kernel: Stack: c013228f f6c1fe40 0804c000 
00000000 00000058 08061458 00000000 00000058
May 19 08:50:07 newsperry-01 kernel:        00000000 00000000 c1b1b510 
f729e960 0804cdd0 00000000 f6c1fe40 c01324f5
May 19 08:50:07 newsperry-01 kernel:        f729e960 f6c1fe40 00000030 
00000000 f5cf2130 c02d02dc f729e960 f6c1fe40
May 19 08:50:07 newsperry-01 kernel: Call Trace:    [<c013228f>] 
[<c01324f5>] [<c011c298>] [<c012c9f1>] [<c012cd9a>]
May 19 08:50:07 newsperry-01 kernel:   [<c014f1d5>] [<c0158496>] 
[<c010929f>]
May 19 08:50:07 newsperry-01 kernel:
May 19 08:50:07 newsperry-01 kernel: Code: c7 40 08 00 00 00 00 89 f8 
c1 e0 04 8b 95 60 ff ff ff 29 c2

##
## Ksymoops
##

 >>EIP; f8a0a7f2 <[enbd]enbd_ioctl+b6/1704>   <=====

 >>ebx; f6b07dc0 <_end+36744688/38453928>
 >>ecx; f6b07dc0 <_end+36744688/38453928>
 >>ebp; f5cbdf7c <_end+358fa844/38453928>
 >>esp; f5cbde94 <_end+358fa75c/38453928>

Trace; c013228f <do_no_page+7f/270>
Trace; c01324f5 <handle_mm_fault+75/100>
Trace; c011c298 <do_page_fault+378/52d>
Trace; c012c9f1 <do_sigaction+101/150>
Trace; c012cd9a <sys_rt_sigaction+aa/c0>
Trace; c014f1d5 <blkdev_ioctl+35/40>
Trace; c0158496 <sys_ioctl+f6/2b0>
Trace; c010929f <system_call+33/38>

Code;  f8a0a7f2 <[enbd]enbd_ioctl+b6/1704>
00000000 <_EIP>:
Code;  f8a0a7f2 <[enbd]enbd_ioctl+b6/1704>   <=====
    0:   c7 40 08 00 00 00 00      movl   $0x0,0x8(%eax)   <=====
Code;  f8a0a7f9 <[enbd]enbd_ioctl+bd/1704>
    7:   89 f8                     mov    %edi,%eax
Code;  f8a0a7fb <[enbd]enbd_ioctl+bf/1704>
    9:   c1 e0 04                  shl    $0x4,%eax
Code;  f8a0a7fe <[enbd]enbd_ioctl+c2/1704>
    c:   8b 95 60 ff ff ff         mov    0xffffff60(%ebp),%edx
Code;  f8a0a804 <[enbd]enbd_ioctl+c8/1704>
   12:   29 c2                     sub    %eax,%edx



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