Hi,
Kernel oops is triggered within few seconds after boot up in ia64 machine
[ 113.004837] Unable to handle kernel NULL pointer dereference (address 0000000000000022)
[ 113.013077] tail[3466]: Oops 8813272891392 [1]
[ 113.017643] Modules linked in:
[ 113.020854]
[ 113.020855] Pid: 3466, CPU 0, comm: tail
[ 113.027901] psr : 0000101008022018 ifs : 8000000000000184 ip : [<a000000100506d10>] Not tainted
[ 113.037187] ip is at blk_rq_map_sg+0x270/0x4e0
[ 113.041755] unat: 0000000000000000 pfs : 0000000000000309 rsc : 0000000000000003
[ 113.049369] rnat: 0000000000000000 bsps: 0000000000000000 pr : 1595696a56aa9a69
[ 113.056987] ldrs: 0000000000000000 ccv : 0000000000000000 fpsr: 0009804c8a70033f
[ 113.064596] csd : 0000000000000000 ssd : 0000000000000000
[ 113.070120] b0 : a0000001006c0050 b6 : a000000100100400 b7 : a0000001006dbe40
[ 113.077736] f6 : 1003e0000000000000000 f7 : 1003e0000000000000008
[ 113.084131] f8 : 1003e0000000000016701 f9 : 10005a800000000000000
[ 113.090526] f10 : 100138cc143fffcb90900 f11 : 1003e0000000000119828
[ 113.096923] r1 : a000000100f7fd90 r2 : 00000001084d8000 r3 : 0000000000000000
[ 113.104535] r8 : 0000000000000002 r9 : 00000000000420f5 r10 : 00000000002109b0
[ 113.112146] r11 : 000000000000000e r12 : e00000014b107900 r13 : e00000014b100000
[ 113.119755] r14 : 00000001084d9000 r15 : 00000001083d4000 r16 : 00000001083d8000
[ 113.127368] r17 : 00000001083d4000 r18 : 00000000001ce6b3 r19 : 0000000000001000
[ 113.134977] r20 : 4000000000042136 r21 : 0000000000000002 r22 : e0000001434797f0
[ 113.142591] r23 : 0000000000001000 r24 : e0000001434797fc r25 : 0000000000000000
[ 113.150206] r26 : 000000000000000a r27 : 0000000000000022 r28 : e00000014a907e80
[ 113.157818] r29 : e00000014347d628 r30 : 0000000000000001 r31 : a000000100d9ef18
[ 113.165442]
[ 113.165443] Call Trace:
[ 113.169623] [<a000000100014560>] show_stack+0x80/0xa0
[ 113.169624] sp=e00000014b1074d0 bsp=e00000014b101a68
[ 113.182857] [<a000000100014e50>] show_regs+0x870/0x8a0
[ 113.182858] sp=e00000014b1076a0 bsp=e00000014b101a10
[ 113.196177] [<a00000010003a2b0>] die+0x190/0x300
[ 113.196178] sp=e00000014b1076a0 bsp=e00000014b1019c0
[ 113.208998] [<a000000100916cb0>] ia64_do_page_fault+0xa50/0xba0
[ 113.209000] sp=e00000014b1076a0 bsp=e00000014b101960
[ 113.223098] [<a00000010000b100>] ia64_leave_kernel+0x0/0x270
[ 113.223100] sp=e00000014b107730 bsp=e00000014b101960
[ 113.236934] [<a000000100506d10>] blk_rq_map_sg+0x270/0x4e0
[ 113.236935] sp=e00000014b107900 bsp=e00000014b101940
[ 113.250598] [<a0000001006c0050>] scsi_init_io+0xf0/0x1e0
[ 113.250599] sp=e00000014b107900 bsp=e00000014b101910
[ 113.264086] [<a0000001006c01f0>] scsi_setup_fs_cmnd+0xb0/0x120
[ 113.264088] sp=e00000014b107900 bsp=e00000014b1018e8
[ 113.278108] [<a0000001006dbf10>] sd_prep_fn+0xd0/0x11e0
[ 113.278110] sp=e00000014b107900 bsp=e00000014b101868
[ 113.291516] [<a000000100500520>] elv_next_request+0x220/0x400
[ 113.291518] sp=e00000014b107900 bsp=e00000014b1017e8
[ 113.305443] [<a0000001006c1d60>] scsi_request_fn+0x80/0x940
[ 113.305444] sp=e00000014b107910 bsp=e00000014b101770
[ 113.319190] [<a000000100509c00>] __generic_unplug_device+0xa0/0xc0
[ 113.319192] sp=e00000014b107910 bsp=e00000014b101750
[ 113.333544] [<a00000010050c630>] generic_unplug_device+0x30/0x80
[ 113.333546] sp=e00000014b107910 bsp=e00000014b101728
[ 113.347741] [<a000000100502d80>] blk_backing_dev_unplug+0x60/0xa0
[ 113.347743] sp=e00000014b107910 bsp=e00000014b101708
[ 113.362024] [<a0000001001c08c0>] sync_buffer+0xe0/0x120
[ 113.362025] sp=e00000014b107910 bsp=e00000014b1016e8
[ 113.375424] [<a00000010090f0e0>] __wait_on_bit+0x140/0x160
[ 113.375426] sp=e00000014b107910 bsp=e00000014b101698
[ 113.389084] [<a00000010090f1d0>] out_of_line_wait_on_bit+0xd0/0x100
[ 113.389086] sp=e00000014b107910 bsp=e00000014b101660
[ 113.403521] [<a0000001001c0660>] __wait_on_buffer+0x40/0x60
[ 113.403523] sp=e00000014b107950 bsp=e00000014b101640
[ 113.417275] [<a0000001001c5960>] __bread+0x1e0/0x220
[ 113.417276] sp=e00000014b107950 bsp=e00000014b101610
[ 113.431925] [<a0000001002869c0>] ext3_get_branch+0xe0/0x200
[ 113.431927] sp=e00000014b107950 bsp=e00000014b1015a8
[ 113.445679] [<a000000100287040>] ext3_get_blocks_handle+0x120/0x1840
[ 113.445681] sp=e00000014b107950 bsp=e00000014b101498
[ 113.460220] [<a000000100288e80>] ext3_get_block+0xe0/0x2c0
[ 113.460221] sp=e00000014b107a00 bsp=e00000014b101440
[ 113.473886] [<a0000001001d3290>] do_mpage_readpage+0x630/0xee0
[ 113.473888] sp=e00000014b107a00 bsp=e00000014b101360
[ 113.487906] [<a0000001001d41b0>] mpage_readpages+0x1f0/0x260
[ 113.487907] sp=e00000014b107b00 bsp=e00000014b1012f0
[ 113.501737] [<a000000100286d90>] ext3_readpages+0x30/0x60
[ 113.501738] sp=e00000014b107b80 bsp=e00000014b1012b8
[ 113.515318] [<a00000010010f920>] __do_page_cache_readahead+0x240/0x580
[ 113.515320] sp=e00000014b107b80 bsp=e00000014b101220
[ 113.530027] [<a000000100110850>] do_page_cache_readahead+0xf0/0x120
[ 113.530028] sp=e00000014b107b90 bsp=e00000014b1011e0
[ 113.544479] [<a0000001000ff940>] filemap_fault+0x600/0x820
[ 113.544480] sp=e00000014b107b90 bsp=e00000014b101128
[ 113.558146] [<a00000010011f470>] __do_fault+0xd0/0xb40
[ 113.558148] sp=e00000014b107b90 bsp=e00000014b1010a0
[ 113.571460] [<a000000100124620>] handle_mm_fault+0x260/0x10a0
[ 113.571461] sp=e00000014b107bc0 bsp=e00000014b101018
[ 113.585382] [<a000000100916940>] ia64_do_page_fault+0x6e0/0xba0
[ 113.585383] sp=e00000014b107bc0 bsp=e00000014b100fb0
[ 113.599472] [<a00000010000b100>] ia64_leave_kernel+0x0/0x270
[ 113.599473] sp=e00000014b107c50 bsp=e00000014b100fb0
[ 113.613312] [<a00000010053a330>] __do_clear_user+0x90/0x160
[ 113.613314] sp=e00000014b107e20 bsp=e00000014b100fa0
[ 113.627070] [<a0000001001ee1d0>] padzero+0xb0/0xe0
[ 113.627071] sp=e00000014b107e20 bsp=e00000014b100f80
[ 113.640040] [<a0000001001f15b0>] load_elf_binary+0x14f0/0x2b00
[ 113.640041] sp=e00000014b107e20 bsp=e00000014b100e38
[ 113.654052] [<a000000100172d40>] search_binary_handler+0x1a0/0x520
[ 113.654054] sp=e00000014b107e30 bsp=e00000014b100da8
[ 113.668418] [<a000000100175be0>] do_execve+0x2e0/0x340
[ 113.668419] sp=e00000014b107e30 bsp=e00000014b100d48
[ 113.681730] [<a000000100012ba0>] sys_execve+0x60/0xc0
[ 113.681731] sp=e00000014b107e30 bsp=e00000014b100d10
[ 113.694958] [<a00000010000a630>] ia64_execve+0x30/0x160
[ 113.694960] sp=e00000014b107e30 bsp=e00000014b100cc0
[ 113.708357] [<a00000010000af60>] ia64_ret_from_syscall+0x0/0x20
[ 113.708358] sp=e00000014b107e30 bsp=e00000014b100cc0
[ 113.722451] [<a000000000010620>] __start_ivt_text+0xffffffff00010620/0x400
[ 113.722453] sp=e00000014b108000 bsp=e00000014b100cc0
and kernel panics in another machine with following oops
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000014
printing eip:
c0283570
*pdpt = 000000000372e001
*pde = 0000000000000000
Oops: 0000 [#1]
SMP
Modules linked in: sd_mod
CPU: 0
EIP: 0060:[<c0283570>] Not tainted VLI
EFLAGS: 00010006 (2.6.23-git12-autokern1 #1)
EIP is at blk_rq_map_sg+0x1a9/0x217
eax: 00000000 ebx: c38b9b00 ecx: 00000005 edx: 00000014
esi: 7fc87000 edi: 00000000 ebp: 00000000 esp: c2841bb4
ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Process init (pid: 1, ti=c2840000 task=c283f5b0 task.ti=c2840000)
Stack: 00000000 00000000 00000000 00000000 7fc89000 00000000 7fc88000 00000000
00002000 00001000 00000001 00000001 00000001 c39f1700 00000014 c355798c
c38c0138 c38b9b00 c38897c8 00000000 00000088 c032a6e8 00000088 c032a75b
Call Trace:
[<c032a6e8>] scsi_init_io+0x62/0xbe
[<c032a75b>] scsi_get_cmd_from_req+0x17/0x32
[<f8d0f41c>] sd_prep_fn+0x6f/0x76f [sd_mod]
[<c028a935>] __cfq_dispatch_requests+0x7e/0x132
[<c0281a16>] elv_set_request+0x14/0x22
[<c0281936>] elv_next_request+0xaf/0xf7
[<c01303f0>] lock_timer_base+0x19/0x35
[<c032ab55>] scsi_request_fn+0x66/0x303
[<c0283b83>] blk_remove_plug+0x52/0x5e
[<c0283bac>] __generic_unplug_device+0x1d/0x1f
[<c028171c>] elv_insert+0xa4/0x144
[<c013049c>] __mod_timer+0x90/0x9a
[<c0284ffd>] __make_request+0x2c5/0x2f4
[<c028529f>] generic_make_request+0x1ff/0x22d
[<c0192fed>] do_mpage_readpage+0x4ab/0x552
[<c0192994>] mpage_end_io_read+0x0/0x53
[<c0285391>] submit_bio+0xc4/0xcb
[<c040477a>] _write_unlock_irq+0x5/0x7
[<c0151b5a>] add_to_page_cache+0x6f/0x76
[<c0192994>] mpage_end_io_read+0x0/0x53
[<c0192a54>] mpage_bio_submit+0x19/0x1d
[<c0193160>] mpage_readpages+0xcc/0xd6
[<c01cffa8>] ext3_get_block+0x0/0xd1
[<c01560be>] __alloc_pages+0x5c/0x2d7
[<c0403e26>] __wait_on_bit_lock+0x4b/0x52
[<c0158533>] read_pages+0x27/0x8f
[<c01cffa8>] ext3_get_block+0x0/0xd1
[<c01586c5>] __do_page_cache_readahead+0x12a/0x144
[<c0158796>] do_page_cache_readahead+0x48/0x52
[<c0152a79>] filemap_fault+0x173/0x2cb
[<c015fd1d>] __do_fault+0x70/0x377
[<c01563df>] __pagevec_free+0x15/0x1a
[<c01603b3>] handle_mm_fault+0x174/0x333
[<c011db4d>] do_page_fault+0x218/0x69f
[<c0161142>] remove_vma+0x40/0x45
[<c0162675>] remove_vma_list+0x40/0x4a
[<c011d935>] do_page_fault+0x0/0x69f
[<c04048f2>] error_code+0x72/0x78
[<c0400000>] inet6_hash_connect+0x293/0x297
=======================
Code: 09 c6 09 d7 39 7c 24 0c 75 0f 39 74 24 08 75 09 8b 44 24 20 89 45 10 eb 43 8b 6c 24 38 b9 05 00 00 00 8d 55 14 89 54 24 38 89 ef <8b> 45 14 89 c2 83 e2 fe a8 01 0f 44 54 24 38 31 c0 89 54 24 38
EIP: [<c0283570>] blk_rq_map_sg+0x1a9/0x217 SS:ESP 0068:c2841bb4
Kernel panic - not syncing: Attempted to kill init!
--
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.
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