DF-3998/DF-3999 envy24ht emldma verbatim harness (mode=soft)
pbuf=131072B (32768 entries)  rbuf=32768B (8192 entries)
[A] 1st rec ch (num=1, slot=-8, offset=0), r32sl:
  [A] user stream received 8 samples from BEFORE rbuf, 0 from PAST rbuf end
         first leaked: data[0] = 0xabadbe08 (kernel-heap marker)
[B] 5th rec ch (num=10, slot=+10, offset=0), r32sl:
  [B] user stream received 0 samples from BEFORE rbuf, 10 from PAST rbuf end
         first leaked: data[8182] = 0xdeadfe00 (kernel-heap marker)
[C] 2nd rec ch (num=2, slot=-6) START: ptr=4087 blk=8 -> offset=4088 (ssize=2048)
  [C] user stream received 12 samples from BEFORE rbuf, 1 from PAST rbuf end
         first leaked: data[17] = 0xbe06 (low half of kernel-heap 0xDEAD/0xABAD marker word)
         data-side OOB write: data16[8192] = 0xfee9 (one element past ch->data)
[D] play twin p16sl (LATENT, 2nd play ch): offset=4064 -> 2 sample32 entries written past pbuf end, first at +130024 bytes (value 0xb9b90000)
SOFT-DONE
RUN_RC=0