• Michael Ellerman's avatar
    powerpc/book3s: Print task info if we take a machine check in user mode · 63f44d65
    Michael Ellerman authored
    For an MCE (Machine Check Exception) that hits while in user mode
    MSR(PR=1), print the task info to the console MCE error log. This may
    help to identify an application that triggered the MCE.
    
    After this patch the MCE console looks like:
    
      Severe Machine check interrupt [Recovered]
        NIP: [0000000010039778] PID: 762 Comm: ebizzy
        Initiator: CPU
        Error type: SLB [Multihit]
          Effective address: 0000000010039778
    
      Severe Machine check interrupt [Not recovered]
        NIP: [0000000010039778] PID: 763 Comm: ebizzy
        Initiator: CPU
        Error type: UE [Page table walk ifetch]
          Effective address: 0000000010039778
      ebizzy[763]: unhandled signal 7 at 0000000010039778 nip 0000000010039778 lr 0000000010001b44 code 30004
    Signed-off-by: default avatarMahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    63f44d65
opal.c 22.2 KB