db> show spr 13a
SPR 314(13a): 8100d931c
db> x/i 0x8100d9318
0x8100d9318:    lwzu    r12, 0x18(r11)
db> 
0x8100d931c:    stwbrx  r12, r0, r11
db> 
0x8100d9320:    lwzu    r12, 0x4(r11)
db> 
0x8100d9324:    stwbrx  r12, r0, r11
db> 
0x8100d9328:    b       0x100d92bc
db> 
0x8100d932c:    lwz     r7, 0x2c(r4)
db> show reg
r0          0xc000000002a55bf8  kdb_enter+0x64
r1          0xc0080000a35d4650
r2          0xc0000000036c0000  __tocbase+0x8000
r3          0xc000000003a28000
r4          0x1ed8f15beab9f1c7
r5          0xc0080000a35d4580
r6                           0
r7          0xc000000003324013  panicked
r8          0xc000000003610000  sdt_proc___create+0x1c8
r9          0xc00000000322f6bc  pcb_size+0x4
r10                 0x31e20060
r11                          0
r12                 0x4200f032
r13         0xc0080000a47e0760
r14                          0
r15                0x81080f000
r16                0x810813000
r17                        0x3
r18                0x81048d768
r19                   0x58cae0
r20         0xffffffffffffffff
r21                0x8100ad6e4
r22                0x81080f000
r23         0xf11e041c0000000e
r24                0x8100ade44
r25            0xfffffbfffe760
r26                          0
r27            0xfffffbfffe770
r28                0x811000158
r29         0xc00000000390d070  kdb_why
r30         0xc0000000032e8845
r31         0xc0080000a35d4650
srr0        0xc000000002a55c0c  kdb_enter+0x78
srr1        0x9000000000001032
lr          0xc000000002a55c0c  kdb_enter+0x78
ctr         0xc0000000029c6100  __mtx_assert+0x74
cr                  0x4800fc82
xer                 0x20040000
dar                          0
dsisr                        0
kdb_enter+0x78: ori     r0, r0, 0x0
db> bt
Tracing pid 2149 tid 100317 td 0xc0080000a47e0760
0xc0080000a35d46d0: at opal_wait_completion+0x3a00
0xc0080000a35d4750: at powerpc_interrupt+0x188
0xc0080000a35d47e0: user trap 0xe60 by 0x8100d931c: srr1=0x900000000200f032
            r1=0xfffffbfffe640 cr=0x44880a82 xer=0 ctr=0x810339d10 r2=0x8100f86f0 frame=0xc0080000a35d4810
db> show frame 0xc0080000a35d4810
trap frame 0xc0080000a35d4810
  r0:   0x811000158 (34644951384)
  r1:   0xfffffbfffe640 (4503598553622080)
  r2:   0x8100f86f0 (34629191408)
  r3:   0 (0)
  r4:   0x810810060 (34636628064)
  r5:   0x811000d70 (34644954480)
  r6:   0x46a180 (4628864)
  r7:   0x811000d90 (34644954512)
  r8:   0xc18 (3096)
  r9:   0x1 (1)
  r10:  0x6200001e2020 (107752141496352)
  r11:  0x811000d88 (34644954504)
  r12:  0 (0)
  r13:  0x810094020 (34628780064)
  r14:  0 (0)
  r15:  0x81080f000 (34636623872)
  r16:  0x810813000 (34636640256)
  r17:  0x3 (3)
  r18:  0x81048d768 (34632947560)
  r19:  0x58cae0 (5819104)
  r20:  0xffffffffffffffff (-1)
  r21:  0x8100ad6e4 (34628884196)
  r22:  0x81080f000 (34636623872)
  r23:  0xf11e041c0000000e (-1072415142962003954)
  r24:  0x8100ade44 (34628886084)
  r25:  0xfffffbfffe760 (4503598553622368)
  r26:  0 (0)
  r27:  0xfffffbfffe770 (4503598553622384)
  r28:  0 (0)
  r29:  0 (0)
  r30:  0x810809000 (34636599296)
  r31:  0x810810060 (34636628064)
  lr:   0x8100d3cf8
  cr:   0x44880a82
  xer:  0
  ctr:  0x810339d10 (34631556368)
  srr0: 0x8100d931c
  srr1: 0x900000000200f032
  exc:  0xe60
  dar:  0x811000158
  dsisr:        0xa000000
db>