#0 0x080b8ee0 in entrySplitPage ()
#1 0x080baccf in ginInsertValue ()
Corrupted stack? gin_xlog_cleanup() doesn't call ginInsertValue() directly.
#2 0x080b81b7 in gin_xlog_cleanup ()
#3 0x080af4ce in StartupXLOG ()
#4 0x080c04ca in BootstrapMain ()
#5 0x08186b2f in StartChildProcess ()
#6 0x081889eb in PostmasterMain ()
#7 0x0814ee9e in main ()
Teodor, can you comment on whether this stack trace looks like it could
be related to that fix?
No, I suppose. That changes was about deadlock prevention, recognize splits and
fixes in deletion of page in a posting tree. entrySplitPage() is a split of page of indexed values.
Hmm. I suppose, I found a reason. Real backtrace should look like:
gin_xlog_cleanup()
ginContinueSplit()
prepareEntryScan(,,,NULL) // makes btree.ginstate = NULL
ginInsertValue()
entrySplitPage() // tries to access
// btree->ginstate->tupdesc in
// 497 line
That piece of code:
value = index_getattr(leftrightmost, FirstOffsetNumber, btree->ginstate->tupdesc, &isnull);
btree->entry = GinFormTuple(btree->ginstate, value, NULL, 0);
ItemPointerSet(&(btree->entry)->t_tid, BufferGetBlockNumber(lbuf), InvalidOffsetNumber);
It just makes new tuple with the same value and another ItemPointer. Some later I'll make a patch which will not call index_getattr() and GinFormTuple() - now I know how make a test suite.
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TIP 6: explain analyze is your friend
