=== T1 on FIXED kernel ===
poc: uid=65534 euid=65534 test=1
T1 step1: NORMAL read(65536) = 65536
T1 step2: ERR(NORESID) read(512) = -1 errno=5 (Input/output error)
T1 RESULT: clean -- failed read disclosed 0/512 stale kernel bounce-buffer bytes
T1 leaked-buffer head @0x8004c4200:
  0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
  0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
  0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
  0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
  0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
=== T2 on FIXED kernel ===
poc: uid=65534 euid=65534 test=2
T2 step1: NORMAL read(65536) = 65536
T2 attempt   1: errno= 5 nz[0,512)=0 nz[512,end)=0 first_nz=0xffffffffffffffff kptr=0
T2 attempt   2: errno= 5 nz[0,512)=0 nz[512,end)=0 first_nz=0xffffffffffffffff kptr=0
T2 attempt   3: errno= 5 nz[0,512)=0 nz[512,end)=0 first_nz=0xffffffffffffffff kptr=0
T2 RESULT: underflow not hit in 400 attempts (pool reuse never landed on poisoned pbuf)
T3 attempt   1: errno=5 matched=0 bytes of root's disk data in our buffer
T3 attempt   2: errno=5 matched=0 bytes of root's disk data in our buffer
T3 attempt   3: errno=5 matched=0 bytes of root's disk data in our buffer
T3 RESULT: no cross-context hit in 5000 attempts (best=0 bytes at attempt -1)