PID: 20796  TASK: ffff88012e72e660  CPU: 2   COMMAND: "dd"
 #0 [ffff8800a8b7b2a0] machine_kexec at ffffffff810613ae
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/machine_kexec_64.c: 343
 #1 [ffff8800a8b7b300] __crash_kexec at ffffffff811160a2
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/kernel/kexec_core.c: 897
 #2 [ffff8800a8b7b3d0] crash_kexec at ffffffff81116190
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/./arch/x86/include/asm/atomic.h: 37
 #3 [ffff8800a8b7b3e8] oops_end at ffffffff817eb798
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/dumpstack.c: 201
 #4 [ffff8800a8b7b410] no_context at ffffffff810708c4
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 770
 #5 [ffff8800a8b7b460] __bad_area_nosemaphore at ffffffff81070b92
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 852
 #6 [ffff8800a8b7b4b0] bad_area at ffffffff817d7cba
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 880
 #7 [ffff8800a8b7b4d8] __do_page_fault at ffffffff817ee924
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 1296
 #8 [ffff8800a8b7b540] trace_do_page_fault at ffffffff817eea76
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 1396
 #9 [ffff8800a8b7b580] do_async_page_fault at ffffffff817edfe2
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/kvm.c: 289
#10 [ffff8800a8b7b5a0] async_page_fault at ffffffff817ea7a8
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/entry_64.S: 1432
    [exception RIP: osc_io_submit+322]
    RIP: ffffffffa0a6e4d2  RSP: ffff8800a8b7b658  RFLAGS: 00010246
    RAX: 0000000000000000  RBX: 0000000000000282  RCX: 0000000000000008
    RDX: 0000000000020282  RSI: ffff88012e73f080  RDI: ffffea0002a3a680
    RBP: ffff8800a8b7b6f8   R8: ffff8800a7f20df8   R9: ffff88012c9e9a60
    R10: 0000000000000000  R11: 0000000000000000  R12: ffff8800a7f20df8
    R13: ffff8800a88101a0  R14: ffff8800ad3e47c0  R15: 0000000000000001
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
    /home/green/git/lustre-release/lustre/osc/osc_io.c: 164
#11 [ffff8800a8b7b700] cl_io_submit_rw at ffffffffa05c44c2 [obdclass]
    /home/green/git/lustre-release/lustre/obdclass/cl_io.c: 659
#12 [ffff8800a8b7b740] lov_io_submit at ffffffffa0ac4e64 [lov]
    /home/green/git/lustre-release/lustre/lov/lov_io.c: 1408
#13 [ffff8800a8b7b7a8] cl_io_submit_rw at ffffffffa05c44c2 [obdclass]
    /home/green/git/lustre-release/lustre/obdclass/cl_io.c: 659
#14 [ffff8800a8b7b7e8] ll_direct_IO_impl at ffffffffa103f6d0 [lustre]
    /home/green/git/lustre-release/lustre/llite/rw26.c: 435
#15 [ffff8800a8b7b8f0] ll_direct_IO at ffffffffa104010c [lustre]
    /home/green/git/lustre-release/lustre/llite/rw26.c: 728
#16 [ffff8800a8b7b938] generic_file_direct_write at ffffffff811b750f
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/mm/filemap.c: 3018
#17 [ffff8800a8b7b990] __generic_file_aio_write at ffffffff811b7807
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/mm/filemap.c: 3256
#18 [ffff8800a8b7ba10] __generic_file_write_iter at ffffffffa1050a9b [lustre]
    /home/green/git/lustre-release/lustre/include/lustre_compat.h: 459
#19 [ffff8800a8b7ba88] vvp_io_write_start at ffffffffa1055d18 [lustre]
    /home/green/git/lustre-release/lustre/llite/vvp_io.c: 1371
#20 [ffff8800a8b7bb70] cl_io_start at ffffffffa05c421d [obdclass]
    /home/green/git/lustre-release/lustre/obdclass/cl_io.c: 507
#21 [ffff8800a8b7bba0] cl_io_loop at ffffffffa05c6f5f [obdclass]
    /home/green/git/lustre-release/lustre/obdclass/cl_io.c: 771
#22 [ffff8800a8b7bbd8] ll_file_io_generic at ffffffffa0fee7cb [lustre]
    /home/green/git/lustre-release/lustre/llite/file.c: 1914
#23 [ffff8800a8b7bcf0] do_file_write_iter at ffffffffa0fef90e [lustre]
    /home/green/git/lustre-release/lustre/llite/file.c: 2541
#24 [ffff8800a8b7bd78] ll_file_write_iter at ffffffffa0fefe7d [lustre]
    /home/green/git/lustre-release/lustre/llite/file.c: 2574
#25 [ffff8800a8b7bd88] ll_file_aio_write at ffffffffa0ff0041 [lustre]
    /home/green/git/lustre-release/lustre/llite/file.c: 2678
#26 [ffff8800a8b7bde0] ll_file_write at ffffffffa0ff01b1 [lustre]
    /home/green/git/lustre-release/lustre/llite/file.c: 2703
#27 [ffff8800a8b7bec8] vfs_write at ffffffff81244a76
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/read_write.c: 543
#28 [ffff8800a8b7bf08] sys_write at ffffffff812458bf
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/read_write.c: 593
#29 [ffff8800a8b7bf50] system_call_fastpath at ffffffff817f400c
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/entry_64.S: 511
    RIP: 00007f4b50737ba0  RSP: 00007fff82b84850  RFLAGS: 00010206
    RAX: 0000000000000001  RBX: 0000000000000000  RCX: 0000000000000fff
    RDX: 0000000000100000  RSI: 00007f4b50b26000  RDI: 0000000000000001
    RBP: 0000000000100000   R8: ffffffffffffffff   R9: 0000000000102003
    R10: 00007fff82b842a0  R11: 0000000000000246  R12: 0000000000100000
    R13: 00007f4b50b26000  R14: 00007f4b50c26000  R15: 0000000000000000
    ORIG_RAX: 0000000000000001  CS: 0033  SS: 002b