Shown here are TIDs from posting lists from block 1 of index "page_len", an index on the heap relation "page".

I have omitted any coverage of other indexes on the same table, since that isn't any more informative -- just duplicates
what we see here, in "page_len".

So this index page has the following 9 known-corrupt posting list tuples (numbered 1-9 here), whose leaf page offset
numbers are:

2,4,7,10,12,14,15,16,17

Most of the corruption is duplication of TIDs in the index.  I relate that to the state of the corresponding heap tuple
in the table here. Occasionally I note non-duplicate TIDs in the index that point to LP_UNUSED items in the heap, which
is of course totally wrong too.

(It's possible that I missed some corruption on this same index page, but that seems unlikely to matter -- I definitely
got most of it, which is enough.)

corrupt posting list in (1,2) starting at postingoff 34/146: <-- posting list tuple #1
  0. (0,1)
...
, 34. (0,53) <--- this is LP_UNUSED
, 35. (0,53)
, 36. (0,53)
, 37. (0,53)
, 38. (0,53)
, 39. (0,54) <-- also LP_UNUSED
, 40. (1,1)
...
, 91. (2,24)
, 92. (2,25)
, 93. (2,26)
, 94. (2,27)
, 95. (2,28) <-- xmin+xmax: 1771473 (2,28) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 96. (2,28)
, 97. (2,28)
...

corrupt posting list in (1,4) starting at postingoff 84/134: <-- posting list tuple #2
 0. (3,31)
...
, 84. (5,46) <--- xmax: 343993, (5,46) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 85. (5,46)
...

XXX Is heap TID (7,39) somewhere in same index page? Because it's LP_REDIRECT to (7,58), which has xmin+xmax of 365637 -- this XID is known to be a corrupter of data

corrupt posting list in (1,7) starting at postingoff 30/137: <-- posting list tuple #3
 0. (7,4)
...
, 29. (7,47)
, 30. (7,47) <--- xmin + xmax: 1824392 (7,47) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 31. (7,49) <--- xmin + xmax: 1338281 (7,49) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 32. (7,49)
, 33. (7,52)

, 71. (8,41)
, 72. (8,41) <--- actually just LP_DEAD
, 73. (8,41)
, 74. (8,42) <-- LP_REDIRECT to 57, which is xmin+xmax 434522,  (8,57) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 75. (8,42)
, 76. (8,43)
...

corrupt posting list in (1,10) starting at postingoff 99/141: <-- posting list tuple #4
 0. (10,7)
 ...

, 98. (12,39)
, 99. (12,39) <--- (12,39) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
                    xmin: 365637
                    xmax: 365637
, 100. (12,39)
, 101. (12,39)
, 102. (12,39)
, 103. (12,41)
, 104. (12,42)
, 105. (12,45)
, 106. (12,46) <-- actually an LP_UNUSED item in heap (incidentally, 12,49 is LP_REDIRECT in heap)
, 107. (12,50)
, 108. (12,51)
, 109. (12,52)
, 110. (12,54)
, 111. (12,56) <--- xmin + xmax: 365637 (12,56) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 112. (12,56)
, 113. (13,1)
, 114. (13,2)
, 115. (13,4)
corrupt posting list in (1,12) starting at postingoff 34/133: <-- posting list tuple #5
 0. (13,37)
 ...
, 32. (14,19)
, 33. (14,20)
, 34. (14,20) <--- xmin: 1825644, xmax: 1825644, (14,20) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 35. (14,23)
, 36. (14,24)
, 37. (14,25)
...

corrupt posting list in (1,14) starting at postingoff 6/139: <-- posting list tuple #6
...
, 2. (16,38)
, 3. (16,39)
, 4. (16,40)
, 5. (16,42)
, 6. (16,42) <-- xmin+xmax both 365637, (16,42) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 7. (16,42)
, 8. (16,42)
, 9. (16,43)
, 10. (16,44) <-- LP_UNUSED in heap
, 11. (16,47)
, 12. (16,48)
, 13. (16,49)
, 14. (16,51)
, 15. (16,54)
, 16. (16,56)
...
, 131. (19,34)
, 132. (19,35)
, 133. (19,36)
, 134. (19,37)
, 135. (19,39)
, 136. (19,40) <-- xmin+xmax: 365637, (19,40) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 137. (19,40)
, 138. (19,40)

corrupt posting list in (1,15) starting at postingoff 48/138: <-- posting list tuple #7
  0. (19,40)
, 1. (19,43)

, 46. (20,38)
, 47. (20,41)
, 48. (20,41) <--- xmin+xmax 1551639, (20,41) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 49. (20,42)
, 50. (20,43)
...
, 70. (21,14)
, 71. (21,15)
, 72. (21,16) <-- xmin: 365637, xmax:365637, (21,16) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 73. (21,16)
, 74. (21,16)
, 75. (21,17)
...
, 93. (21,39)
, 94. (21,40)
, 95. (21,41) <-- FWIW (21,40) is LP_DEAD in heap, but this is just LP_NORMAL
              <-- (21,41) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
                  (21,41) xmin: 365637
                  (21,41) xmax: 365637
, 96. (21,41)
, 97. (21,42)
, 98. (21,43)
, 99. (21,44)
...
, 131. (22,29)
, 132. (22,30)
, 133. (22,31)
, 134. (22,33) <- LP_REDIRECT to (22,41)
, 135. (22,34)
, 136. (22,35)
, 137. (22,36)

corrupt posting list in (1,16) starting at postingoff 2/139: <-- posting list tuple #8
  0. (22,37)
, 1. (22,39)
, 2. (22,39) <--- xmin/xmax 365637, (22,39) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 3. (22,39)
, 4. (22,40)
            htid 22,41 not in index, whose xmin + xmax are both 1718382, plus: (22,41) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
            XXX: Actually, heap TID 22,41 is effectively "in the index", because heap tid 22,33 is on same index page, and in the heap page we see it's LP_REDIRECT to 22,41
, 5. (22,42)
, 6. (22,43)
, 7. (22,44)
, 8. (22,45)
, 9. (22,46)
...
, 44. (23,30)
, 45. (23,33) <-- LP_UNUSED in heap
, 46. (23,34)
, 47. (23,35)
, 48. (23,35)
, 49. (23,35)
, 50. (23,35) <-- xmin+xmax both 1475767, (23,35) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 51. (23,35)
, 52. (23,36)
, 53. (23,41)
...

corrupt posting list in (1,17) starting at postingoff 37/139: <-- posting list tuple #9
 0. (25,35)
...
, 36. (26,27)
, 37. (26,27)<---
, 38. (26,27)
             <--- (26,27) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
             xmin: 365638
             xmax: 365638
, 39. (26,28)
, 40. (26,30)
, 41. (26,31)
, 42. (26,35)
, 43. (26,36)
...
, 95. (27,46)
, 96. (27,47)
, 97. (27,47) <--- xmin+xmax both 1613467, (27,47) t_infomask (HEAP_HASNULL|HEAP_HASVARWIDTH|HEAP_XMAX_KEYSHR_LOCK|HEAP_XMAX_LOCK_ONLY|HEAP_XMIN_COMMITTED|HEAP_XMAX_INVALID|HEAP_UPDATED)
, 98. (27,47)
, 99. (27,47)
, 100. (27,47)
...