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Subject[PROBLEM] ip_conntrack_ftp module oops under 2.6.1-mm2
Date
Executing
"modprobe ip_conntrack_ftp" causes this oops:

ip_conntrack version 2.1 (3968 buckets, 31744 max) - 300 bytes per conntrack
Module len 7233 truncated
Unable to handle kernel NULL pointer dereference at virtual address 00000004
printing eip:
c0135e10
*pde = 00000000
Oops: 0002 [#1]
PREEMPT
CPU: 0
EIP: 0060:[<c0135e10>] Not tainted VLI
EFLAGS: 00010003
EIP is at sys_init_module+0xb0/0x230
eax: 00000004 ebx: 08074958 ecx: c13773c8 edx: df9b7c44
esi: d62c8000 edi: 00000000 ebp: c0300178 esp: d62c9fa4
ds: 007b es: 007b ss: 0068
Process modprobe (pid: 1220, threadinfo=d62c8000 task=d7371300)
Stack: 08074958 00001c41 08074088 08074958 00000002 08053670 d62c8000 c02beb96
08074958 00001c41 08074088 00000002 08053670 bfffe5b0 00000080 0000007b
0000007b 00000080 ffffd41a 00000073 00000287 bfffe5b0 0000007b
Call Trace:
[<c02beb96>] sysenter_past_esp+0x43/0x65
Code: ff 89 c7 76 16 89 e9 ff 05 78 01 30 c0 0f 8e 14 07 00 00 89 c2 eb 8e 8d
74 26 00 fa ff 46 14 8b 15 88 01 30 c0 8d 40 04 89 42 04 <89> 57 04 c7 40 04
88 01 30 c0 a3 88 01 30 c0 fb 8b 46 08 ff 4e
<6>note: modprobe[1220] exited with preempt_count 1
bad: scheduling while atomic!
Call Trace:
[<c011c0b5>] schedule+0x5a5/0x5b0
[<c0145ba3>] unmap_page_range+0x43/0x70
[<c0145d84>] unmap_vmas+0x1b4/0x210
[<c0149aeb>] exit_mmap+0x7b/0x190
[<c011dba9>] mmput+0x79/0xf0
[<c0121bc2>] do_exit+0x152/0x410
[<c0119f00>] do_page_fault+0x0/0x50c
[<c010b7d9>] die+0xf9/0x100
[<c011a0de>] do_page_fault+0x1de/0x50c
[<c014f787>] vfree+0x27/0x40
[<c0135411>] load_module+0xe1/0xa30
[<c0119f00>] do_page_fault+0x0/0x50c
[<c02bed97>] error_code+0x2f/0x38
[<c0135e10>] sys_init_module+0xb0/0x230
[<c02beb96>] sysenter_past_esp+0x43/0x65

OTOH it loads and works great in 2.6.1. Please feel free to ask for more
information.

Thanks
Hari
harisri@bigpond.com

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