PID: 1044   TASK: ffff880136914440  CPU: 1   COMMAND: "bash"
 #0 [ffff8800aa4b39c8] 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 [ffff8800aa4b3a28] __crash_kexec at ffffffff811160a2
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/kernel/kexec_core.c: 897
 #2 [ffff8800aa4b3af8] crash_kexec at ffffffff81116190
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/./arch/x86/include/asm/atomic.h: 37
 #3 [ffff8800aa4b3b10] oops_end at ffffffff817eb798
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/dumpstack.c: 201
 #4 [ffff8800aa4b3b38] no_context at ffffffff810708c4
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 770
 #5 [ffff8800aa4b3b88] __bad_area_nosemaphore at ffffffff81070b92
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 852
 #6 [ffff8800aa4b3bd8] bad_area_nosemaphore at ffffffff81070cb4
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 859
 #7 [ffff8800aa4b3be8] __do_page_fault at ffffffff817ee7d8
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 1359
 #8 [ffff8800aa4b3c50] 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 [ffff8800aa4b3c90] 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 [ffff8800aa4b3cb0] 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: ll_dir_read+305]
    RIP: ffffffffa0ff2a81  RSP: ffff8800aa4b3d68  RFLAGS: 00010282
    RAX: 0000000000002e80  RBX: 7fc3ce8a92dbfd72  RCX: 0000000000000000
    RDX: 0000000000000200  RSI: ffff8800a4ae933a  RDI: 0000000001aa2aa4
    RBP: ffff8800aa4b3df0   R8: 0002d1d30205d680   R9: 0000000000000000
    R10: 0000000000000000  R11: 000000000000000f  R12: ffff8800a4ae9000
    R13: ffffea000292ba40  R14: ffffea0002d29d80  R15: ffff8800a4aebec8
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
    /home/green/git/lustre-release/lustre/llite/dir.c: 232
#11 [ffff8800aa4b3df8] ll_readdir at ffffffffa0ff2e01 [lustre]
    /home/green/git/lustre-release/lustre/llite/dir.c: 397
#12 [ffff8800aa4b3ea8] iterate_dir at ffffffff8125a8e1
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/readdir.c: 47
#13 [ffff8800aa4b3ee0] sys_getdents at ffffffff8125aea4
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/readdir.c: 223
#14 [ffff8800aa4b3f50] 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: 00007f917e2e2425  RSP: 00007ffe6ed26c90  RFLAGS: 00010246
    RAX: 000000000000004e  RBX: 0000000001aa1cd0  RCX: 0000000000000000
    RDX: 0000000000008000  RSI: 0000000001aa1cd0  RDI: 0000000000000003
    RBP: 0000000001aa1cd0   R8: 0000000004000000   R9: 0000000000008030
    R10: 0000000000000000  R11: 0000000000000246  R12: ffffffffffffff70
    R13: 0000000000000000  R14: 0000000001a61700  R15: 0000000000000000
    ORIG_RAX: 000000000000004e  CS: 0033  SS: 002b