[Drbd-dev] DRBD-8 causes a panic in kernel proper.

[Montrose, Ernest]

Hi all,
As of the changes from Wednesday Sep 20, 2006, I see a panic in kernel
proper with the drbd driver loaded and io attempted. 
I am investigating but I am hoping that some lights might go on and a
quick fix provided.   Thanks.  Below is the stack trace.
 
Two node cluster:
 ============================On the first node

 Sep 22 12:26:12 jerry kernel: Unable to handle kernel NULL pointer
dereference at virtual
 address
 00000000
 Sep 22 12:26:12 jerry kernel:  printing eip:
 Sep 22 12:26:12 jerry kernel: 00000000
 Sep 22 12:26:12 jerry kernel: *pde = ma 00000000 pa fffff000
 Sep 22 12:26:12 jerry kernel: Oops: 0000 [#1]
 Sep 22 12:26:12 jerry kernel: Modules linked in: drbd ipmi_devintf
ipmi_si ipmi_msghandler video
 thermal processor fan button battery ac e1000
 Sep 22 12:26:12 jerry kernel: CPU:    0
 Sep 22 12:26:12 jerry kernel: EIP:    0061:[<00000000>]    Not tainted
VLI
 Sep 22 12:26:12 jerry kernel: EFLAGS: 00010206  (2.6.16.13-xen0 #1)
 Sep 22 12:26:12 jerry kernel: EIP is at _stext+0x3fefe000/0x40
 Sep 22 12:26:12 jerry kernel: eax: eda412c0  ebx: 00000000  ecx:
00001000  edx: ead80734
 Sep 22 12:26:12 jerry kernel: esi: 00006000  edi: ef859800  ebp:
e6195c80  esp: e6195c60
 Sep 22 12:26:12 jerry kernel: ds: 007b  es: 007b  ss: 0069
 Sep 22 12:26:12 jerry kernel: Process xvd 1 93:00 (pid: 31717,
threadinfo=e6194000
 task=eaa20030)
 Sep 22 12:26:12 jerry kernel: Stack: <0>f12c522f ead80734 e56aba40
e6fd4f90 c0780bc0 e56aba40
 00001000 e6fd4f90
 Sep 22 12:26:12 jerry kernel:        e6195cc0 c015ed68 ead80734
e56aba40 e6fd4f90 c012da5c
 efd0fe6c 00000000
 Sep 22 12:26:12 jerry kernel:        e56aba40 00000000 e6195ccc
c015e762 c093a760 00000000
 00000000 e56aba40
 Sep 22 12:26:12 jerry kernel: Call Trace:
 Sep 22 12:26:12 jerry kernel:  [<c010515a>]
show_stack_log_lvl+0xaa/0xe0
 Sep 22 12:26:12 jerry kernel:  [<c010536e>] show_registers+0x18e/0x210
 Sep 22 12:26:12 jerry kernel:  [<c0105569>] die+0xd9/0x180
 Sep 22 12:26:12 jerry kernel:  [<c0112ccc>] do_page_fault+0x3cc/0x68e
 Sep 22 12:26:12 jerry kernel:  [<c0104d7f>] error_code+0x2b/0x30
 Sep 22 12:26:12 jerry kernel:  [<c015ed68>] __bio_add_page+0x268/0x2d0
 Sep 22 12:26:12 jerry kernel:  [<c015ee4e>] bio_add_page+0x3e/0x40
 Sep 22 12:26:12 jerry kernel:  [<c02de086>]
dispatch_rw_block_io+0x3a6/0x4c0
 Sep 22 12:26:12 jerry kernel:  [<c02ddcbe>] do_block_io_op+0xce/0xf0
 Sep 22 12:26:12 jerry kernel:  [<c02dd8c3>] blkif_schedule+0x73/0x290
 Sep 22 12:26:12 jerry kernel:  [<c012d517>] kthread+0xa7/0xf0
 Sep 22 12:26:12 jerry kernel:  [<c0102d9d>]
kernel_thread_helper+0x5/0x18
 Sep 22 12:26:12 jerry kernel: Code:  Bad EIP value.
 Sep 22 12:26:12 jerry kernel:  <0>Fatal exception: panic in 5 seconds  
 

==================================On the next node
 Sep 22 12:33:02 jerry kernel: Unable to handle kernel NULL pointer
dereference at virtual
 address
 00000000
 Sep 22 12:33:02 jerry kernel:  printing eip:
 Sep 22 12:33:02 jerry kernel: 00000000
 Sep 22 12:33:02 jerry kernel: *pde = ma 00000000 pa fffff000
 Sep 22 12:33:02 jerry kernel: Oops: 0000 [#1]
 Sep 22 12:33:02 jerry kernel: Modules linked in: drbd ipmi_devintf
ipmi_si ipmi_msghandler video
 thermal processor fan button battery ac e1000
 Sep 22 12:33:02 jerry kernel: CPU:    0
 Sep 22 12:33:02 jerry kernel: EIP:    0061:[<00000000>]    Not tainted
VLI
 Sep 22 12:33:02 jerry kernel: EFLAGS: 00010206  (2.6.16.13-xen0 #1)
 Sep 22 12:33:02 jerry kernel: EIP is at _stext+0x3fefe000/0x40
 Sep 22 12:33:02 jerry kernel: eax: ed45e200  ebx: 00000000  ecx:
00001000  edx: ec8a6ab8
 Sep 22 12:33:02 jerry kernel: esi: 00008000  edi: efe8e800  ebp:
ee369b28  esp: ee369b08
 Sep 22 12:33:02 jerry kernel: ds: 007b  es: 007b  ss: 0069
 Sep 22 12:33:02 jerry kernel: Process java (pid: 6091,
threadinfo=ee368000 task=ea9045b0)
 Sep 22 12:33:02 jerry kernel: Stack: <0>f12c522f ec8a6ab8 e98d1b00
c0763fb0 00011000 e98d1b00
 00001000 c0763fb0
 Sep 22 12:33:03 jerry kernel:        ee369b68 c015ed68 ec8a6ab8
e98d1b00 c0763fb0 c015e762
 c093a760 000000d0
 Sep 22 12:33:03 jerry kernel:        0000000c 00000000 00000001
000000d0 00000001 00001000
 00000001 00000001
 Sep 22 12:33:03 jerry kernel: Call Trace:
 Sep 22 12:33:03 jerry kernel:  [<c010515a>]
show_stack_log_lvl+0xaa/0xe0
 Sep 22 12:33:03 jerry kernel:  [<c010536e>] show_registers+0x18e/0x210
 Sep 22 12:33:03 jerry kernel:  [<c0105569>] die+0xd9/0x180
 Sep 22 12:33:03 jerry kernel:  [<c0112ccc>] do_page_fault+0x3cc/0x68e
 Sep 22 12:33:03 jerry kernel:  [<c0104d7f>] error_code+0x2b/0x30
 Sep 22 12:33:03 jerry kernel:  [<c015ed68>] __bio_add_page+0x268/0x2d0
 Sep 22 12:33:03 jerry kernel:  [<c015ee4e>] bio_add_page+0x3e/0x40
 Sep 22 12:33:03 jerry kernel:  [<c017d622>]
do_mpage_readpage+0x182/0x320
 Sep 22 12:33:03 jerry kernel:  [<c017d86c>] mpage_readpages+0xac/0x140
 Sep 22 12:33:03 jerry kernel:  [<c01c21b8>] ext3_readpages+0x28/0x30
 Sep 22 12:33:03 jerry kernel:  [<c013fced>] read_pages+0xfd/0x110
 Sep 22 12:33:03 jerry kernel:  [<c013fe48>]
__do_page_cache_readahead+0x148/0x190
 Sep 22 12:33:03 jerry kernel:  [<c013ffdf>]
blockable_page_cache_readahead+0x4f/0xd0
 Sep 22 12:33:03 jerry kernel:  [<c014021d>]
page_cache_readahead+0xfd/0x1a0
 Sep 22 12:33:03 jerry kernel:  [<c0138de2>]
do_generic_mapping_read+0x442/0x620
 Sep 22 12:33:03 jerry kernel:  [<c013924c>]
__generic_file_aio_read+0x19c/0x220
 Sep 22 12:33:03 jerry kernel:  [<c0139323>]
generic_file_aio_read+0x53/0x70
 Sep 22 12:33:03 jerry kernel:  [<c015951a>] do_sync_read+0xba/0x110
 Sep 22 12:33:03 jerry kernel:  [<c0159611>] vfs_read+0xa1/0x190
 Sep 22 12:33:03 jerry kernel:  [<c01599eb>] sys_read+0x4b/0x80
 Sep 22 12:33:03 jerry kernel:  [<c0104c09>] syscall_call+0x7/0xb
 Sep 22 12:33:03 jerry kernel: Code:  Bad EIP value.
 Sep 22 12:33:03 jerry kernel:  <0>Fatal exception: panic in 5 seconds
 
EM--
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