Here is the coverity link: https://coverity.corp.mongodb.com/reports.htm#v17018/p10049/fileInstanceId=38657649&defectInstanceId=20178721&mergedDefectId=121029&eventId=20178721-0
In bt_split.c:
1614 if (ref != NULL) { 1615 if (ref->page != NULL) CID 121029 (#1 of 1): Bitwise-and with zero (CONSTANT_EXPRESSION_RESULT)bit_and_with_zero: ref->page->flags_atomic & 0 /* (uint8_t)256U */ is always 0. This occurs as the logical operand of if. 1616 F_SET_ATOMIC(ref->page, WT_PAGE_UPDATE_IGNORE); 1617 __wt_free_ref(session, ref, orig->type, true); 1618 }
The problem is that F_SET_ATOMIC is set up to work on uint8_t data type, and WT_PAGE_UPDATE_IGNORE is 0x100, which doesn't fit into 8 bits.