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Panic in tcp_v4_syn_recv_sock. Running tux 2.0 w/ specweb99



TUX 2.0 server in Redhat 7.1 (2.4.2-2smp) running w/SPECweb99
hangs.  I captured the oops messages twice. Call sequence
in both cases appears to be

...<sys_tux+22/90>
     <system_call+33/38>
          <tcp_v4_syn_recv_sock+237/2a0> ... panic.


At the end of this email are the ksymoops messages for two panic
cases.

Here are the details of the test:   TUX 2.0 in Redhat 7.1,
2.4.2-2smp kernel out of the box in one case and a recompiled
kernel in another case.

Hardware:  Dual PIII, 1 GHz with 1 or 2 GB of memory.
One 3COM985 (acenic) fiber ethernet.

SPECWeb99 benchmark with one client running at
800 connections/second.  Dynamic requests turned off.


==================================
Here is the ksymoops detail:


ksymoops 2.4.0 on i686 2.4.2-2smp.  Options used
     -v /boot/vmlinux-2.4.2-2smp (specified)
     -k ksyms.1 (specified)
     -l modules.1 (specified)
     -o /lib/modules/2.4.2-2smp/ (specified)
     -m /boot/System.map-2.4.2-2smp (specified)

Error (expand_objects): cannot stat(/lib/aic7xxx.o) for aic7xxx
Error (expand_objects): cannot stat(/lib/sd_mod.o) for sd_mod
Error (expand_objects): cannot stat(/lib/scsi_mod.o) for scsi_mod
Warning (compare_maps): ksyms_base symbol
__VERSIONED_SYMBOL(shmem_file_setup) not found in vmlinux.  Ignoring
ksyms_base entry
Warning (compare_maps): mismatch on symbol partition_name  , ksyms_base
says c01bba60, vmlinux says c015d2a0.  Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol docroot  , tux says f89b9444,
/lib/modules/2.4.2-2smp/kernel/net/tux/tux.o says f89b7da4.  Ignoring
/lib/modules/2.4.2-2smp/kernel/net/tux/tux.o entry
Warning (compare_maps): mismatch on symbol usb_devfs_handle  , usbcore says
f8950c60, /lib/modules/2.4.2-2smp/kernel/drivers/usb/usbcore.o says
f8950780.  Ignoring /lib/modules/2.4.2-2smp/kernel/drivers/usb/usbcore.o
entry
Warning (compare_maps): mismatch on symbol sd  , sd_mod says f881cd84,
/lib/modules/2.4.2-2smp/kernel/drivers/scsi/sd_mod.o says f881cc20.
Ignoring /lib/modules/2.4.2-2smp/kernel/drivers/scsi/sd_mod.o entry
Warning (compare_maps): mismatch on symbol proc_scsi  , scsi_mod says
f8818110, /lib/modules/2.4.2-2smp/kernel/drivers/scsi/scsi_mod.o says
f88169e0.  Ignoring /lib/modules/2.4.2-2smp/kernel/drivers/scsi/scsi_mod.o
entry
Warning (compare_maps): mismatch on symbol scsi_logging_level  , scsi_mod
says f881810c, /lib/modules/2.4.2-2smp/kernel/drivers/scsi/scsi_mod.o says
f88169dc.  Ignoring /lib/modules/2.4.2-2smp/kernel/drivers/scsi/scsi_mod.o
entry
Unable to handle kernel NULL pointer dereference at virtual address
00000008
c01efcf7
Oops: 0000
CPU:    1
EIP:    0010:[<c01efcf7>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: f76f8060   ebx: f76f8060   ecx: 00000000   edx: f7b00000
esi: f7b00280   edi: f7866ac8   ebp: f76f8194   esp: f576ba50
ds: 0018   es: 0018   ss: 0018
Process tux (pid: 1023, stackpage=f576b000)
Stack: 00000001 d33bca40 025edc19 f76f8060 c01f2c49 f76f8060 cda63180
d33bca40
       00000000 025edc1a 025edc19 025edc1a 00000000 00001000 f76f8194
c0304f60
       e36dfe40 c209c8a0 c01dceb6 e36dfe40 00000004 c01dce20 c01ced33
c03520c0
Call Trace: [<c01f2c49>] [<c01dceb6>] [<c01dce20>] [<c01ced33>]
[<c01dce20>] [<c01ced6a>] [<c01dce20>]
       [<c01ced6a>] [<c01db9a2>] [<c01dce20>] [<f897f37d>] [<c01dbd28>]
[<f897f5f6>] [<f899e628>] [<f897f5f6>]
       [<f899e628>] [<f899e000>] [<c010aa1e>] [<c01ea245>] [<c01eacd7>]
[<c01e83c2>] [<c01c4bcf>] [<c01e9be4>]
       [<c01efda8>] [<c01f011b>] [<c01eff8b>] [<c01f059d>] [<c01cea2e>]
[<c01d92dc>] [<c01d91e0>] [<c01ced33>]
       [<c01d91e0>] [<c01ced6a>] [<c01d8e05>] [<c01d91e0>] [<c01d94f7>]
[<c01d9350>] [<c01ced33>] [<c01d9350>]
       [<c01ced6a>] [<c01d9196>] [<c01d9350>] [<f89a7798>] [<f89a7732>]
[<c01c8ebb>] [<c01c8ba2>] [<c011d51b>]
       [<c010ac65>] [<f89b9578>] [<c010928c>] [<f89b9578>] [<f89acf03>]
[<f89a8018>] [<f89a9149>] [<f89b9578>]
       [<f89b9578>] [<f89af082>] [<f89b9578>] [<f89b0b2b>] [<f89b9578>]
[<c014e8cb>] [<c014e8cb>] [<c01457c9>]
       [<c014598d>] [<f89b9578>] [<c01c2fe2>] [<c01091cb>]
Code: 8b 41 08 89 43 18 85 c0 74 09 8b 51 08 8d 43 18 89 42 1c 89

>>EIP; c01efcf7 <tcp_v4_syn_recv_sock+237/2a0>   <=====
Trace; c01f2c49 <tcp_check_req+259/3b0>
Trace; c01dceb6 <ip_finish_output2+96/e0>
Trace; c01dce20 <ip_finish_output2+0/e0>
Trace; c01ced33 <nf_hook_slow+d3/170>
Trace; c01dce20 <ip_finish_output2+0/e0>
Trace; c01ced6a <nf_hook_slow+10a/170>
Trace; c01dce20 <ip_finish_output2+0/e0>
Trace; c01ced6a <nf_hook_slow+10a/170>
Trace; c01db9a2 <ip_output+142/150>
Trace; c01dce20 <ip_finish_output2+0/e0>
Trace; f897f37d <[acenic]ace_rx_int+13d/1f0>
Trace; c01dbd28 <ip_queue_xmit+378/4c0>
Trace; f897f5f6 <[acenic]ace_interrupt+1c6/330>
Trace; f899e628 <[acenic]__module_parm_max_rx_desc+192e/6306>
Trace; f897f5f6 <[acenic]ace_interrupt+1c6/330>
Trace; f899e628 <[acenic]__module_parm_max_rx_desc+192e/6306>
Trace; f899e000 <[acenic]__module_parm_max_rx_desc+1306/6306>
Trace; c010aa1e <handle_IRQ_event+5e/90>
Trace; c01ea245 <tcp_transmit_skb+4c5/560>
Trace; c01eacd7 <tcp_write_xmit+157/290>
Trace; c01e83c2 <__tcp_data_snd_check+52/d0>
Trace; c01c4bcf <__kfree_skb+12f/140>
Trace; c01e9be4 <tcp_rcv_state_process+854/920>
Trace; c01efda8 <tcp_v4_hnd_req+48/1c0>
Trace; c01f011b <tcp_v4_do_rcv+10b/190>
Trace; c01eff8b <tcp_v4_checksum_init+6b/f0>
Trace; c01f059d <tcp_v4_rcv+3fd/670>
Trace; c01cea2e <nf_iterate+2e/80>
Trace; c01d92dc <ip_local_deliver_finish+fc/170>
Trace; c01d91e0 <ip_local_deliver_finish+0/170>
Trace; c01ced33 <nf_hook_slow+d3/170>
Trace; c01d91e0 <ip_local_deliver_finish+0/170>
Trace; c01ced6a <nf_hook_slow+10a/170>
Trace; c01d8e05 <ip_local_deliver+1b5/1c0>
Trace; c01d91e0 <ip_local_deliver_finish+0/170>
Trace; c01d94f7 <ip_rcv_finish+1a7/1f0>
Trace; c01d9350 <ip_rcv_finish+0/1f0>
Trace; c01ced33 <nf_hook_slow+d3/170>
Trace; c01d9350 <ip_rcv_finish+0/1f0>
Trace; c01ced6a <nf_hook_slow+10a/170>
Trace; c01d9196 <ip_rcv+386/3d0>
Trace; c01d9350 <ip_rcv_finish+0/1f0>
Trace; f89a7798 <[tux]__idle_event+48/50>
Trace; f89a7732 <[tux]output_space_event+22/40>
Trace; c01c8ebb <net_rx_action+1eb/300>
Trace; c01c8ba2 <net_tx_action+62/140>
Trace; c011d51b <do_softirq+6b/a0>
Trace; c010ac65 <do_IRQ+e5/f0>
Trace; f89b9578 <[tux]__module_using_checksums+e/12>
Trace; c010928c <ret_from_intr+0/20>
Trace; f89b9578 <[tux]__module_using_checksums+e/12>
Trace; f89acf03 <[tux]http_send_body+83/100>
Trace; f89a8018 <[tux]tux_schedule_atom+18/20>
Trace; f89a9149 <[tux]process_requests+89/a0>
Trace; f89b9578 <[tux]__module_using_checksums+e/12>
Trace; f89b9578 <[tux]__module_using_checksums+e/12>
Trace; f89af082 <[tux]event_loop+42/120>
Trace; f89b9578 <[tux]__module_using_checksums+e/12>
Trace; f89b0b2b <[tux]__sys_tux+44b/940>
Trace; f89b9578 <[tux]__module_using_checksums+e/12>
Trace; c014e8cb <dput+3b/1a0>
Trace; c014e8cb <dput+3b/1a0>
Trace; c01457c9 <vfs_permission+89/120>
Trace; c014598d <path_release+d/40>
Trace; f89b9578 <[tux]__module_using_checksums+e/12>
Trace; c01c2fe2 <sys_tux+22/90>
Trace; c01091cb <system_call+33/38>
Code;  c01efcf7 <tcp_v4_syn_recv_sock+237/2a0>
00000000 <_EIP>:
Code;  c01efcf7 <tcp_v4_syn_recv_sock+237/2a0>   <=====
   0:   8b 41 08                  mov    0x8(%ecx),%eax   <=====
Code;  c01efcfa <tcp_v4_syn_recv_sock+23a/2a0>
   3:   89 43 18                  mov    %eax,0x18(%ebx)
Code;  c01efcfd <tcp_v4_syn_recv_sock+23d/2a0>
   6:   85 c0                     test   %eax,%eax
Code;  c01efcff <tcp_v4_syn_recv_sock+23f/2a0>
   8:   74 09                     je     13 <_EIP+0x13> c01efd0a
<tcp_v4_syn_recv_sock+24a/2a0>
Code;  c01efd01 <tcp_v4_syn_recv_sock+241/2a0>
   a:   8b 51 08                  mov    0x8(%ecx),%edx
Code;  c01efd04 <tcp_v4_syn_recv_sock+244/2a0>
   d:   8d 43 18                  lea    0x18(%ebx),%eax
Code;  c01efd07 <tcp_v4_syn_recv_sock+247/2a0>
  10:   89 42 1c                  mov    %eax,0x1c(%edx)
Code;  c01efd0a <tcp_v4_syn_recv_sock+24a/2a0>
  13:   89 00                     mov    %eax,(%eax)

Kernel panic: Aiee, killing interrupt handler!

7 warnings and 3 errors issued.  Results may not be reliable.



======================================================
This second set of results are with a recompiled kernel (2.4.2-2)
In this case there happens to be 2GB of memory in the box
Otherwise hardware/software setup is identical to the previous


ksymoops 2.4.0 on i686 2.4.2-2.  Options used
     -v /boot/vmlinux-2.4.2-2 (specified)
     -k ksyms.3 (specified)
     -l modules.3 (specified)
     -o /lib/modules/2.4.2-2 (specified)
     -m /boot/System.map-2.4.2-2 (specified)

Error (expand_objects): cannot stat(/lib/aic7xxx.o) for aic7xxx
Error (expand_objects): cannot stat(/lib/sd_mod.o) for sd_mod
Error (expand_objects): cannot stat(/lib/scsi_mod.o) for scsi_mod
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/cdrom/driver.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/char/drm/drm.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/media/radio/radio.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/media/video/video.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/media/media.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/misc/misc.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/net/appletalk/appletalk.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/net/cipe/bf-i386.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/net/fc/fc.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/net/pcmcia/pcmcia_net.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/net/tokenring/tr.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/net/wan/wan.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/parport/driver.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/drivers/sound/sounddrivers.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/net/ipv4/netfilter/netfilter.o
Warning (read_object): no symbols in
/lib/modules/2.4.2-2/build/net/ipv6/netfilter/netfilter.o
Warning (compare_maps): ksyms_base symbol
__VERSIONED_SYMBOL(shmem_file_setup) not found in vmlinux.  Ignoring
ksyms_base entry
Warning (compare_maps): mismatch on symbol partition_name  , ksyms_base
says c01be0a0, vmlinux says c015f920.  Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol docroot  , tux says f89b9fa4,
/lib/modules/2.4.2-2/kernel/net/tux/tux.o says f89b8904.  Ignoring
/lib/modules/2.4.2-2/kernel/net/tux/tux.o entry
Warning (compare_maps): mismatch on symbol usb_devfs_handle  , usbcore says
f8952b00, /lib/modules/2.4.2-2/kernel/drivers/usb/usbcore.o says f8952620.
Ignoring /lib/modules/2.4.2-2/kernel/drivers/usb/usbcore.o entry
Warning (map_ksym_to_module): cannot match loaded module aic7xxx to a
unique module object.  Trace may not be reliable.
Warning (map_ksym_to_module): cannot match loaded module sd_mod to a unique
module object.  Trace may not be reliable.
Warning (map_ksym_to_module): cannot match loaded module scsi_mod to a
unique module object.  Trace may not be reliable.
Unable to handle kernel NULL pointer dereference at virtual address
00000008
c01f2317
Oops: 0000
CPU:    0
EIP:    0010:[<c01f2317>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: f6e82a80   ebx: f6e82a80   ecx: 00000000   edx: f7500000
esi: f7500280   edi: f7075bf0   ebp: f6e82bb4   esp: f6777748
ds: 0018   es: 0018   ss: 0018
Process tux (pid: 1014, stackpage=f6777000)
Stack: 00000001 c60021e0 478a6898 f6e82a80 c01f5269 f6e82a80 f54c3500
c60021e0
       00000000 478a6899 478a6898 478a6899 00000000 00001000 f6e82bb4
c01df450
       f6c0ec00 c01d107e 00000004 f6776000 c0307ce0 f5204480 f6bf5760
c01df4e6
Call Trace: [<c01f5269>] [<c01df450>] [<c01d107e>] [<c01df4e6>]
[<c01df450>] [<c01d1383>] [<c01df450>]
       [<c01d13ba>] [<c01ddfd2>] [<c01ddfd2>] [<c01df450>] [<c01decb7>]
[<c01de358>] [<c01df0e0>] [<f89a8427>]
       [<f89a8798>] [<f89a87c2>] [<f89a8836>] [<c01eed30>] [<c01f23c8>]
[<c01f273b>] [<c01f25ab>] [<c01f2bbd>]
       [<c01d107e>] [<c01db90c>] [<c01db810>] [<c01d1383>] [<c01db810>]
[<c01d13ba>] [<c01db435>] [<c01db810>]
       [<c01dbb27>] [<c01db980>] [<c01d1383>] [<c01db980>] [<c01d13ba>]
[<f899f628>] [<f89825c3>] [<c01db7c6>]
       [<c01db980>] [<f89a8798>] [<f89a8732>] [<c01cb50b>] [<c01cb1f2>]
[<c011fa7b>] [<c010ac65>] [<c010928c>]
       [<c01c7fe1>] [<c01cae2e>] [<c01d107e>] [<c01c766a>] [<c01df450>]
[<c01d12dd>] [<c01de358>] [<c01ddfd2>]
       [<c01df450>] [<c01db810>] [<c01f176e>] [<c01de358>] [<c01ec865>]
[<c01c6ecb>] [<c01c70ac>] [<c01ec865>]
       [<c01ef7b1>] [<c01ecb4b>] [<c01c723f>] [<c01e2442>] [<c010928c>]
[<c01e29eb>] [<f89aa82c>] [<c012d4d3>]
       [<f89aaa84>] [<f89aa7c0>] [<f89b9fc0>] [<f89adeea>] [<f89a9018>]
[<f89aa149>] [<f89b9fc0>] [<f89b9fc0>]
       [<f89b0082>] [<f89b1b2b>] [<f89b9fc0>] [<c0150f3b>] [<c01c4ced>]
[<f89b9fc0>] [<c01c5441>] [<c01c5652>]
       [<c01091cb>]
Code: 8b 41 08 89 43 18 85 c0 74 09 8b 51 08 8d 43 18 89 42 1c 89

>>EIP; c01f2317 <tcp_v4_syn_recv_sock+237/2a0>   <=====
Trace; c01f5269 <tcp_check_req+259/3b0>
Trace; c01df450 <ip_finish_output2+0/e0>
Trace; c01d107e <nf_iterate+2e/80>
Trace; c01df4e6 <ip_finish_output2+96/e0>
Trace; c01df450 <ip_finish_output2+0/e0>
Trace; c01d1383 <nf_hook_slow+d3/170>
Trace; c01df450 <ip_finish_output2+0/e0>
Trace; c01d13ba <nf_hook_slow+10a/170>
Trace; c01ddfd2 <ip_output+142/150>
Trace; c01ddfd2 <ip_output+142/150>
Trace; c01df450 <ip_finish_output2+0/e0>
Trace; c01decb7 <ip_build_xmit+2e7/3a0>
Trace; c01de358 <ip_queue_xmit+378/4c0>
Trace; c01df0e0 <ip_reply_glue_bits+0/c0>
Trace; f89a8427 <[tux]__add_req_to_workqueue+17/70>
Trace; f89a8798 <[tux]__idle_event+48/50>
Trace; f89a87c2 <[tux]idle_event+22/40>
Trace; f89a8836 <[tux]tux_data_ready+56/70>
Trace; c01eed30 <tcp_send_delayed_ack+b0/d0>
Trace; c01f23c8 <tcp_v4_hnd_req+48/1c0>
Trace; c01f273b <tcp_v4_do_rcv+10b/190>
Trace; c01f25ab <tcp_v4_checksum_init+6b/f0>
Trace; c01f2bbd <tcp_v4_rcv+3fd/670>
Trace; c01d107e <nf_iterate+2e/80>
Trace; c01db90c <ip_local_deliver_finish+fc/170>
Trace; c01db810 <ip_local_deliver_finish+0/170>
Trace; c01d1383 <nf_hook_slow+d3/170>
Trace; c01db810 <ip_local_deliver_finish+0/170>
Trace; c01d13ba <nf_hook_slow+10a/170>
Trace; c01db435 <ip_local_deliver+1b5/1c0>
Trace; c01db810 <ip_local_deliver_finish+0/170>
Trace; c01dbb27 <ip_rcv_finish+1a7/1f0>
Trace; c01db980 <ip_rcv_finish+0/1f0>
Trace; c01d1383 <nf_hook_slow+d3/170>
Trace; c01db980 <ip_rcv_finish+0/1f0>
Trace; c01d13ba <nf_hook_slow+10a/170>
Trace; f899f628 <[acenic]__module_parm_max_rx_desc+19ae/6386>
Trace; f89825c3 <[acenic]__module_pci_device_size+2b3/d0f>
Trace; c01db7c6 <ip_rcv+386/3d0>
Trace; c01db980 <ip_rcv_finish+0/1f0>
Trace; f89a8798 <[tux]__idle_event+48/50>
Trace; f89a8732 <[tux]output_space_event+22/40>
Trace; c01cb50b <net_rx_action+1eb/300>
Trace; c01cb1f2 <net_tx_action+62/140>
Trace; c011fa7b <do_softirq+6b/a0>
Trace; c010ac65 <do_IRQ+e5/f0>
Trace; c010928c <ret_from_intr+0/20>
Trace; c01c7fe1 <skb_copy_bits+51/2b0>
Trace; c01cae2e <dev_queue_xmit+14e/2b0>
Trace; c01d107e <nf_iterate+2e/80>
Trace; c01c766a <skb_linearize+9a/130>
Trace; c01df450 <ip_finish_output2+0/e0>
Trace; c01d12dd <nf_hook_slow+2d/170>
Trace; c01de358 <ip_queue_xmit+378/4c0>
Trace; c01ddfd2 <ip_output+142/150>
Trace; c01df450 <ip_finish_output2+0/e0>
Trace; c01db810 <ip_local_deliver_finish+0/170>
Trace; c01f176e <tcp_v4_send_check+6e/b0>
Trace; c01de358 <ip_queue_xmit+378/4c0>
Trace; c01ec865 <tcp_transmit_skb+4c5/560>
Trace; c01c6ecb <alloc_skb+fb/1d0>
Trace; c01c70ac <kfree_skbmem+c/70>
Trace; c01ec865 <tcp_transmit_skb+4c5/560>
Trace; c01ef7b1 <tcp_delack_timer+171/1c0>
Trace; c01ecb4b <tcp_push_one+7b/110>
Trace; c01c723f <__kfree_skb+12f/140>
Trace; c01e2442 <do_tcp_sendpages+5b2/ac0>
Trace; c010928c <ret_from_intr+0/20>
Trace; c01e29eb <tcp_sendpage+9b/110>
Trace; f89aa82c <[tux]sock_send_actor+6c/1a0>
Trace; c012d4d3 <do_generic_file_read+293/640>
Trace; f89aaa84 <[tux]generic_send_file+84/100>
Trace; f89aa7c0 <[tux]sock_send_actor+0/1a0>
Trace; f89b9fc0 <[tux]threadinfo+0/16>
Trace; f89adeea <[tux]http_send_body+6a/100>
Trace; f89a9018 <[tux]tux_schedule_atom+18/20>
Trace; f89aa149 <[tux]process_requests+89/a0>
Trace; f89b9fc0 <[tux]threadinfo+0/16>
Trace; f89b9fc0 <[tux]threadinfo+0/16>
Trace; f89b0082 <[tux]event_loop+42/120>
Trace; f89b1b2b <[tux]__sys_tux+44b/940>
Trace; f89b9fc0 <[tux]threadinfo+0/16>
Trace; c0150f3b <dput+3b/1a0>
Trace; c01c4ced <sys_send+1d/30>
Trace; f89b9fc0 <[tux]threadinfo+0/16>
Trace; c01c5441 <sys_socketcall+111/200>
Trace; c01c5652 <sys_tux+22/90>
Trace; c01091cb <system_call+33/38>
Code;  c01f2317 <tcp_v4_syn_recv_sock+237/2a0>
00000000 <_EIP>:
Code;  c01f2317 <tcp_v4_syn_recv_sock+237/2a0>   <=====
   0:   8b 41 08                  mov    0x8(%ecx),%eax   <=====
Code;  c01f231a <tcp_v4_syn_recv_sock+23a/2a0>
   3:   89 43 18                  mov    %eax,0x18(%ebx)
Code;  c01f231d <tcp_v4_syn_recv_sock+23d/2a0>
   6:   85 c0                     test   %eax,%eax
Code;  c01f231f <tcp_v4_syn_recv_sock+23f/2a0>
   8:   74 09                     je     13 <_EIP+0x13> c01f232a
<tcp_v4_syn_recv_sock+24a/2a0>
Code;  c01f2321 <tcp_v4_syn_recv_sock+241/2a0>
   a:   8b 51 08                  mov    0x8(%ecx),%edx
Code;  c01f2324 <tcp_v4_syn_recv_sock+244/2a0>
   d:   8d 43 18                  lea    0x18(%ebx),%eax
Code;  c01f2327 <tcp_v4_syn_recv_sock+247/2a0>
  10:   89 42 1c                  mov    %eax,0x1c(%edx)
Code;  c01f232a <tcp_v4_syn_recv_sock+24a/2a0>
  13:   89 00                     mov    %eax,(%eax)

Kernel panic: Aiee, killing interrupt handler!

23 warnings and 3 errors issued.  Results may not be reliable.








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