Protection Fault in __migration_entry_wait

Protection Fault in __migration_entry_wait

[Dashi DS1 Cao]

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Hello everybody,
A X86_64 server repeatedly dumps once a while with the signature:

#4 [ffff88003eaf3d30] do_general_protection at ffffffff8163da9e
#5 [ffff88003eaf3d60] general_protection at ffffffff8163d3a8
    [exception RIP: __migration_entry_wait+148]
    RIP: ffffffff811c5f64  RSP: ffff88003eaf3e18  RFLAGS: 00010203
    RAX: 01ffffffffffffff  RBX: ffffea0000000030  RCX: 0000000000000000
    RDX: 1e001897fe001880  RSI: ffffea0000000030  RDI: f000c4bff000c4be
    RBP: ffff88003eaf3e28   R8: 00003ffffffff000   R9: 00000000000000a9
    R10: 0000000000000000  R11: f000c4bff000c4be  R12: 1e000297fe001880
    R13: ffff8820aa4ac870  R14: ffff883be2b06400  R15: 0000000000000080
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0000
 #6 [ffff88003eaf3e10] __migration_entry_wait at ffffffff811c5eea
 #7 [ffff88003eaf3e30] migration_entry_wait at ffffffff811c62b3
 #8 [ffff88003eaf3e40] handle_mm_fault at ffffffff81197a12
 #9 [ffff88003eaf3ed0] __do_page_fault at ffffffff81640e22
#10 [ffff88003eaf3f28] do_page_fault at ffffffff81641113
#11 [ffff88003eaf3f50] page_fault at ffffffff8163d408
    RIP: 00000000022d80ba  RSP: 00007fbed15b9990  RFLAGS: 00010202
    RAX: 0000000000002000  RBX: 00007fbaeaa00e70  RCX: 00007fbaeaa00e70
    RDX: 0000000000000000  RSI: 00000000b94bce12  RDI: 0000000000003b82
    RBP: 00007fbed15b99a0   R8: 0000000000000000   R9: 000000000e8a3e7e
    R10: 0000000000000000  R11: 00007fbaeaa00e70  R12: 00007fbed419d470
    R13: 00007fb678172270  R14: 00007fbd0db98620  R15: 00007fb678505da8
¡¡¡¡ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
¡¡¡¡
It seems that this is a bug. I¡¯m not sure if it has been identified and removed. The customer is adviced to disable numa balancing to work around. I¡¯m waiting for the results from them.

Dashi Cao
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