PID: 21181  TASK: ffff8800b6069110  CPU: 1   COMMAND: "dd"
 #0 [ffff8800aa38f8b0] 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 [ffff8800aa38f910] __crash_kexec at ffffffff811160a2
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/kernel/kexec_core.c: 897
 #2 [ffff8800aa38f9e0] panic at ffffffff817d8546
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/./arch/x86/include/asm/smp.h: 93
 #3 [ffff8800aa38fa60] lbug_with_loc at ffffffffa02bcb95 [libcfs]
    /home/green/git/lustre-release/libcfs/libcfs/debug.c: 549
 #4 [ffff8800aa38fa78] cl_env_percpu_put at ffffffffa05b956e [obdclass]
    /home/green/git/lustre-release/lustre/obdclass/cl_object.c: 992
 #5 [ffff8800aa38fa88] do_read_folio at ffffffffa109a7fc [lustre]
    /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 112
 #6 [ffff8800aa38fb88] ll_readpage at ffffffffa109b39e [lustre]
    /home/green/git/lustre-release/lustre/llite/rw.c: 2374
 #7 [ffff8800aa38fb98] do_generic_file_read.constprop.52 at ffffffff811b5c15
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/mm/filemap.c: 1889
 #8 [ffff8800aa38fc20] generic_file_aio_read at ffffffff811b7049
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/mm/filemap.c: 2131
 #9 [ffff8800aa38fca8] do_file_read_iter at ffffffffa1067a6a [lustre]
    /home/green/git/lustre-release/lustre/include/lustre_compat.h: 387
#10 [ffff8800aa38fd80] ll_file_read_iter at ffffffffa106849d [lustre]
    /home/green/git/lustre-release/lustre/llite/file.c: 2548
#11 [ffff8800aa38fd90] ll_file_aio_read at ffffffffa1068686 [lustre]
    /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 206
#12 [ffff8800aa38fde8] ll_file_read at ffffffffa10687d1 [lustre]
    /home/green/git/lustre-release/lustre/llite/file.c: 2794
#13 [ffff8800aa38fed0] vfs_read at ffffffff81244899
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/read_write.c: 465
#14 [ffff8800aa38ff08] sys_read at ffffffff812457cf
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/read_write.c: 577
#15 [ffff8800aa38ff50] 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: 00007f9d43623b40  RSP: 00007fff7e3f0d60  RFLAGS: 00010206
    RAX: 0000000000000000  RBX: 0000000000611660  RCX: 0000000000000fff
    RDX: 0000000000001000  RSI: 0000000001ce6000  RDI: 0000000000000000
    RBP: 0000000000001000   R8: 0000000000000003   R9: 0000000000003003
    R10: 00007fff7e3f07a0  R11: 0000000000000246  R12: 0000000001ce6000
    R13: 0000000000000000  R14: 00007fff7e3f3500  R15: 00007fff7e3f0fb8
    ORIG_RAX: 0000000000000000  CS: 0033  SS: 002b