• Martin Schwidefsky's avatar
    [S390] Improved oops output. · bb11e3bd
    Martin Schwidefsky authored
    This patch adds two improvements to the oops output. First it adds an
    additional line after the PSW which decodes the different fields of it.
    Second a disassembler is added that decodes the instructions surrounding
    the faulting PSW. The output of a test oops now looks like this:
    
    kernel BUG at init/main.c:419
    illegal operation: 0001 [#1]
    CPU:    0    Not tainted
    Process swapper (pid: 0, task: 0000000000464968, ksp: 00000000004be000)
    Krnl PSW : 0700000180000000 00000000000120b6 (rest_init+0x36/0x38)
               R:0 T:1 IO:1 EX:1 Key:0 M:0 W:0 P:0 AS:0 CC:0 PM:0 EA:3
    Krnl GPRS: 0000000000000003 00000000004ba017 0000000000000022 0000000000000001
               000000000003a5f6 0000000000000000 00000000004be6a8 0000000000000000
               0000000000000000 00000000004b8200 0000000000003a50 0000000000008000
               0000000000516368 000000000033d008 00000000000120b2 00000000004bdee0
    Krnl Code: 00000000000120a6: e3e0f0980024       stg     %r14,152(%r15)
               00000000000120ac: c0e500014296       brasl   %r14,3a5d8
               00000000000120b2: a7f40001           brc     15,120b4
              >00000000000120b6: 0707               bcr     0,%r7
               00000000000120b8: eb7ff0500024       stmg    %r7,%r15,80(%r15)
               00000000000120be: c0d000195825       larl    %r13,33d108
               00000000000120c4: a7f13f00           tmll    %r15,16128
               00000000000120c8: a7840001           brc     8,120ca
    Call Trace:
    ([<00000000000120b2>] rest_init+0x32/0x38)
     [<00000000004be614>] start_kernel+0x37c/0x410
     [<0000000000012020>] _ehead+0x20/0x80
    Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
    bb11e3bd
dis.c 40.7 KB