PID: 19076  TASK: ffff88012a4eb330  CPU: 0   COMMAND: "sendfile_groupl"
 #0 [ffff8800b403f298] 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 [ffff8800b403f2f8] __crash_kexec at ffffffff811160a2
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/kernel/kexec_core.c: 897
 #2 [ffff8800b403f3c8] panic at ffffffff817d8546
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/./arch/x86/include/asm/smp.h: 93
 #3 [ffff8800b403f448] lbug_with_loc at ffffffffa0228b95 [libcfs]
    /home/green/git/lustre-release/libcfs/libcfs/debug.c: 549
 #4 [ffff8800b403f460] cl_env_percpu_put at ffffffffa05c956e [obdclass]
    /home/green/git/lustre-release/lustre/obdclass/cl_object.c: 992
 #5 [ffff8800b403f470] do_read_folio at ffffffffa10b67fc [lustre]
    /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 112
 #6 [ffff8800b403f570] ll_readpage at ffffffffa10b739e [lustre]
    /home/green/git/lustre-release/lustre/llite/rw.c: 2374
 #7 [ffff8800b403f580] 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 [ffff8800b403f608] generic_file_aio_read at ffffffff811b7049
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/mm/filemap.c: 2131
 #9 [ffff8800b403f690] do_file_read_iter at ffffffffa1083a6a [lustre]
    /home/green/git/lustre-release/lustre/include/lustre_compat.h: 387
#10 [ffff8800b403f768] do_loop_readv_writev at ffffffffa1076414 [lustre]
    /home/green/git/lustre-release/lustre/llite/file.c: 2383
#11 [ffff8800b403f7d0] ll_file_read_iter at ffffffffa1084492 [lustre]
    /home/green/git/lustre-release/lustre/llite/file.c: 2548
#12 [ffff8800b403f7e0] ll_file_aio_read at ffffffffa1084686 [lustre]
    /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 206
#13 [ffff8800b403f838] do_sync_readv_writev at ffffffff81243fe9
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/read_write.c: 674
#14 [ffff8800b403f910] do_readv_writev at ffffffff81245d4e
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/read_write.c: 827
#15 [ffff8800b403fa08] vfs_readv at ffffffff81245f12
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/read_write.c: 856
#16 [ffff8800b403fa18] default_file_splice_read at ffffffff8127a3e5
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/splice.c: 665
#17 [ffff8800b403fd40] pcc_file_splice_read at ffffffffa10f7805 [lustre]
    /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 206
#18 [ffff8800b403fd98] do_splice_to at ffffffff812792e2
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/splice.c: 1206
#19 [ffff8800b403fdd0] splice_direct_to_actor at ffffffff812793b7
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/splice.c: 1277
#20 [ffff8800b403fe38] do_splice_direct at ffffffff81279562
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/splice.c: 1369
#21 [ffff8800b403fe98] do_sendfile at ffffffff81245188
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/include/linux/fs.h: 2774
#22 [ffff8800b403ff10] sys_sendfile64 at ffffffff8124690a
    /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/read_write.c: 1297
#23 [ffff8800b403ff50] 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: 00007f57c568510a  RSP: 00007ffcaf755758  RFLAGS: 00000246
    RAX: 0000000000000028  RBX: 0000000000500000  RCX: ffffffffffffffff
    RDX: 0000000000000000  RSI: 0000000000000003  RDI: 0000000000000004
    RBP: 0000000000000003   R8: 00007f57c68d7740   R9: 00007f57c55de2cd
    R10: 0000000000500000  R11: 0000000000000246  R12: 0000000000000004
    R13: 0000000000500000  R14: 00007f57c68d76b0  R15: 0000000000a00000
    ORIG_RAX: 0000000000000028  CS: 0033  SS: 002b