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[Xen-bugs] [Bug 843] New: 3.0.4 Kernel Oops

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Subject: [Xen-bugs] [Bug 843] New: 3.0.4 Kernel Oops
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Date: Thu, 21 Dec 2006 18:09:33 -0800
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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=843

           Summary: 3.0.4 Kernel Oops
           Product: Xen
           Version: unstable
          Platform: x86
        OS/Version: Linux-2.6
            Status: NEW
          Severity: major
          Priority: P1
         Component: Unspecified
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: p.bugzilla.xensource.com@xxxxxxxxxxxxxxx


Hi. We just got this oops on a server that had been running 3.0.2 fine about 20
hours after upgrading to xen 3.0.4.

Kernel 
Dec 22 00:52:23 host83 kernel: Unable to handle kernel NULL pointer dereference
at virtual address 00000004
Dec 22 00:52:23 host83 kernel:  printing eip:
Dec 22 00:52:23 host83 kernel: c015433d
Dec 22 00:52:23 host83 kernel: 19da3000 -> *pde = 00000000:e0763001
Dec 22 00:52:23 host83 kernel: 1af63000 -> *pme = 00000000:00000000
Dec 22 00:52:23 host83 kernel: Oops: 0002 [#1]
Dec 22 00:52:23 host83 kernel: Modules linked in: dm_mirror dm_mod e100 tg3
ext3 jbd raid5 xor raid1 sata_sil libata sd_mod sc
si_mod
Dec 22 00:52:23 host83 kernel: CPU:    0
Dec 22 00:52:23 host83 kernel: EIP:    0061:[<c015433d>]    Not tainted VLI
Dec 22 00:52:23 host83 kernel: EFLAGS: 00010046   (2.6.16.33-xen0 #5)
Dec 22 00:52:23 host83 kernel: EIP is at cache_alloc_refill+0xce/0x1f6
Dec 22 00:52:23 host83 kernel: eax: 00000000   ebx: 0000001a   ecx: 00000000  
edx: c067ff80
Dec 22 00:52:23 host83 kernel: esi: c804a000   edi: ffffffff   ebp: dbde7980  
esp: c872faa0
Dec 22 00:52:23 host83 kernel: ds: 007b   es: 007b   ss: 0069
Dec 22 00:52:23 host83 kernel: Process loop46 (pid: 1934, threadinfo=c872e000
task=d13e8580)
Dec 22 00:52:23 host83 kernel: Stack: <0>dbde37c0 c804a000 00000000 c067ff88
c067ff80 c545bd84 00000001 0000002f
Dec 22 00:52:23 host83 kernel:        d19a5d84 c015463d dbde37c0 00000020
c545bd84 00000002 c01f0ccc dbde37c0
Dec 22 00:52:23 host83 kernel:        00000020 00000006 c01f0f1f c545bd84
00020050 00000000 c11145a0 c545bd80
Dec 22 00:52:23 host83 kernel: Call Trace:
Dec 22 00:52:23 host83 kernel:  [<c015463d>] kmem_cache_alloc+0x64/0x68
Dec 22 00:52:24 host83 kernel:  [<c01f0ccc>] radix_tree_node_alloc+0x1c/0x54
Dec 22 00:52:24 host83 kernel:  [<c01f0f1f>] radix_tree_insert+0xda/0x127
Dec 22 00:52:24 host83 kernel:  [<c0135ab7>] add_to_page_cache+0x4e/0x8f
Dec 22 00:52:24 host83 kernel:  [<c0135b21>] add_to_page_cache_lru+0x29/0x46
Dec 22 00:52:24 host83 kernel:  [<c0135ea4>] find_or_create_page+0x2b/0x99
Dec 22 00:52:24 host83 kernel:  [<c0159079>] grow_dev_page+0x34/0xff
Dec 22 00:52:24 host83 kernel:  [<c0159183>] grow_buffers+0x3f/0x60

Dec 22 00:52:24 host83 kernel:  [<c0159554>] __getblk+0x3d/0x3f
Dec 22 00:52:24 host83 kernel:  [<c01595cc>] __bread+0x1f/0x41
Dec 22 00:52:24 host83 kernel:  [<dd0a482b>] ext3_get_branch+0x60/0xd8 [ext3]
Dec 22 00:52:24 host83 kernel:  [<dd0a4e5e>] ext3_get_block_handle+0x99/0x364
[ext3]
Dec 22 00:52:24 host83 kernel:  [<c012b865>] autoremove_wake_function+0x0/0x4b
Dec 22 00:52:25 host83 kernel:  [<dd0a5177>] ext3_get_block+0x4e/0x8a [ext3]
Dec 22 00:52:25 host83 kernel:  [<c0177dff>] do_mpage_readpage+0x124/0x379
Dec 22 00:52:25 host83 kernel:  [<c01e5389>] submit_bio+0x52/0xe4
Dec 22 Dec 22 00:52:23 host83 kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000004
Dec 22 00:52:23 host83 kernel:  printing eip:
Dec 22 00:52:23 host83 kernel: c015433d
Dec 22 00:52:23 host83 kernel: 19da3000 -> *pde = 00000000:e0763001
Dec 22 00:52:23 host83 kernel: 1af63000 -> *pme = 00000000:00000000
Dec 22 00:52:23 host83 kernel: Oops: 0002 [#1]
Dec 22 00:52:23 host83 kernel: Modules linked in: dm_mirror dm_mod e100 tg3
ext3 jbd raid5 xor raid1 sata_sil libata sd_mod sc
si_mod
Dec 22 00:52:23 host83 kernel: CPU:    0
Dec 22 00:52:23 host83 kernel: EIP:    0061:[<c015433d>]    Not tainted VLI
Dec 22 00:52:23 host83 kernel: EFLAGS: 00010046   (2.6.16.33-xen0 #5)
Dec 22 00:52:23 host83 kernel: EIP is at cache_alloc_refill+0xce/0x1f6
Dec 22 00:52:23 host83 kernel: eax: 00000000   ebx: 0000001a   ecx: 00000000  
edx: c067ff80
Dec 22 00:52:23 host83 kernel: esi: c804a000   edi: ffffffff   ebp: dbde7980  
esp: c872faa0
Dec 22 00:52:23 host83 kernel: ds: 007b   es: 007b   ss: 0069
Dec 22 00:52:23 host83 kernel: Process loop46 (pid: 1934, threadinfo=c872e000
task=d13e8580)
Dec 22 00:52:23 host83 kernel: Stack: <0>dbde37c0 c804a000 00000000 c067ff88
c067ff80 c545bd84 00000001 0000002f
Dec 22 00:52:23 host83 kernel:        d19a5d84 c015463d dbde37c0 00000020
c545bd84 00000002 c01f0ccc dbde37c0
Dec 22 00:52:23 host83 kernel:        00000020 00000006 c01f0f1f c545bd84
00020050 00000000 c11145a0 c545bd80
Dec 22 00:52:23 host83 kernel: Call Trace:
Dec 22 00:52:23 host83 kernel:  [<c015463d>] kmem_cache_alloc+0x64/0x68
Dec 22 00:52:24 host83 kernel:  [<c01f0ccc>] radix_tree_node_alloc+0x1c/0x54
Dec 22 00:52:24 host83 kernel:  [<c01f0f1f>] radix_tree_insert+0xda/0x127
Dec 22 00:52:24 host83 kernel:  [<c0135ab7>] add_to_page_cache+0x4e/0x8f
Dec 22 00:52:24 host83 kernel:  [<c0135b21>] add_to_page_cache_lru+0x29/0x46
Dec 22 00:52:24 host83 kernel:  [<c0135ea4>] find_or_create_page+0x2b/0x99
Dec 22 00:52:24 host83 kernel:  [<c0159079>] grow_dev_page+0x34/0xff
Dec 22 00:52:24 host83 kernel:  [<c0159183>] grow_buffers+0x3f/0x60
Dec 22 00:52:24 host83 kernel:  [<c015920d>] __getblk_slow+0x69/0xd5
Dec 22 00:52:24 host83 kernel:  [<c0159554>] __getblk+0x3d/0x3f
00:52:25 host83 kernel:  [<c01f0ccc>] radix_tree_node_alloc+0x1c/0x54
Dec 22 00:52:25 host83 kernel:  [<c01f0f1f>] radix_tree_insert+0xda/0x127
Dec 22 00:52:25 host83 kernel:  [<c0135ab7>] add_to_page_cache+0x4e/0x8f
Dec 22 00:52:25 host83 kernel:  [<c01780ef>] mpage_readpages+0x9b/0x124
Dec 22 00:52:25 host83 kernel:  [<dd0a5129>] ext3_get_block+0x0/0x8a [ext3]
Dec 22 00:52:25 host83 kernel:  [<c01032c6>] __switch_to+0x107/0x3ed
Dec 22 00:52:25 host83 kernel:  [<c013a3d5>] buffered_rmqueue+0xc3/0x23e
Dec 22 00:52:25 host83 kernel:  [<c032aa13>] schedule+0x393/0x6ae
Dec 22 00:52:25 host83 kernel:  [<c013cd0d>] read_pages+0xfe/0x106
Dec 22 00:52:25 host83 kernel:  [<dd0a5129>] ext3_get_block+0x0/0x8a [ext3]
Dec 22 00:52:25 host83 kernel:  [<c013a715>] __alloc_pages+0x56/0x30d
Dec 22 00:52:25 host83 kernel:  [<c013ce57>]
__do_page_cache_readahead+0x142/0x177
Dec 22 00:52:25 host83 kernel:  [<c013cfb0>]
blockable_page_cache_readahead+0x4c/0xb1
Dec 22 00:52:25 host83 kernel:  [<c013d210>] page_cache_readahead+0x151/0x18d
Dec 22 00:52:25 host83 kernel:  [<c01365d9>]
do_generic_mapping_read+0x51c/0x655
Dec 22 00:52:25 host83 kernel:  [<c0136c1c>] generic_file_sendfile+0x62/0x71
Dec 22 00:52:25 host83 kernel:  [<c0249180>] lo_read_actor+0x0/0xbf
Dec 22 00:52:25 host83 kernel:  [<c0249292>] do_lo_receive+0x53/0x62
Dec 22 00:52:25 host83 kernel:  [<c0249180>] lo_read_actor+0x0/0xbf
Dec 22 00:52:25 host83 kernel:  [<c02492f7>] lo_receive+0x56/0x85
Dec 22 00:52:25 host83 kernel:  [<c024936d>] do_bio_filebacked+0x47/0x71
Dec 22 00:52:25 host83 kernel:  [<c0249601>] loop_thread+0xc0/0x132
Dec 22 00:52:25 host83 kernel:  [<c0249541>] loop_thread+0x0/0x132
Dec 22 00:52:25 host83 kernel:  [<c0102c55>] kernel_thread_helper+0x5/0xb
Dec 22 00:52:25 host83 kernel: Code: 00 00 83 45 00 01 89 74 24 04 8b 44 24 28
89 04 24 e8 53 fd ff ff 89 44 9d 10 8b 54 24 28
 8b 42 1c 39 46 10 72 c9 8b 56 04 8b 06 <89> 50 04 89 02 c7 46 04 00 02 20 00
83 7e 14 ff c7 06 00 01 10
Dec 22 00:52:42 host83 kernel:  <1>Unable to handle kernel NULL pointer
dereference at virtual address 00000004
Dec 22 00:52:42 host83 kernel:  printing eip:
Dec 22 00:52:42 host83 kernel: c015433d
Dec 22 00:52:42 host83 kernel: 1af3c000 -> *pde = 00000000:e14d8001
Dec 22 00:52:42 host83 kernel: 1a0d8000 -> *pme = 00000000:00000000
Dec 22 00:52:42 host83 kernel: Oops: 0002 [#2]
Dec 22 00:52:42 host83 kernel: Modules linked in: dm_mirror dm_mod e100 tg3
ext3 jbd raid5 xor raid1 sata_sil libata sd_mod sc
si_mod
Dec 22 00:52:42 host83 kernel: CPU:    0

[root@host83 xen]# xm info
release                : 2.6.16.33-xen0
version                : #5 Thu Dec 21 03:47:17 UTC 2006
machine                : i686
nr_cpus                : 4
nr_nodes               : 1
sockets_per_node       : 2
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 1991
hw_caps                :
178bfbff:e3d3fbff:00000000:00000010:00000001:00000000:00000003
total_memory           : 16319
free_memory            : 15749
xen_major              : 3
xen_minor              : 0
xen_extra              : .4-0
xen_caps               : xen-3.0-x86_32p
xen_pagesize           : 4096
platform_params        : virt_start=0xf5800000
xen_changeset          : Wed Dec 20 09:47:24 2006 +0000 13100:489f28021f26
cc_compiler            : gcc version 3.4.5 20051201 (Red Hat 3.4.5-2)
cc_compile_by          :
cc_compile_date        : Thu Dec 21 03:46:49 UTC 2006
xend_config_format     : 3


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