Fix VM buffer pin management in heap_lock_updated_tuple_rec(). Sloppy coding in this function could lead to leaking a VM buffer pin, or to attempting to free the same pin twice. Repair. While at it, reduce the code's tendency to free and reacquire the same page pin.
Back-patch to 9.6; before that, this routine did not concern itself with VM pages. Amit Kapila and Tom Lane Discussion: https://postgr.es/m/CAA4eK1KJKwhc=isgtqhjm76cadvswzneauzkh_cx-6qggks...@mail.gmail.com Branch ------ REL9_6_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/96d2df840b0669aad6792b459805367ba70641af Modified Files -------------- src/backend/access/heap/heapam.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-)
