Thread: Bug in v13 due to "Fix corruption when relation truncation fails."
Good day. Commit "Fix corruption when relation truncation fails." [0] makes smgrtruncate be called in a critical section. Unfortunately in version 13 it leads to occasional call to palloc0 inside of critical section, which triggers Assert in debug builds: - smgrtruncate calls mdtruncate - mdtruncate may call register_dirty_segment - register_dirty_segment calls RegisterSyncRequest - RegisterSyncRequest calls ForwardSyncRequest - ForwardSyncRequest may call CompactCheckpointerRequestQueue - CompactCheckpointerRequestQueue may call palloc0 ... In versions 14 and above CompactCheckpointerRequestQueue does check for critical section due to commit "Fix bugs in MultiXact truncation" [1], which were backported down to 14 version, but not 13. We caught it in our private tests, so it is real. Cherry-pick of [1] from 14 version to 13 solves the issue. [0] https://git.postgresql.org/gitweb/?p=postgresql.git;h=2280912165d [1] https://git.postgresql.org/gitweb/?p=postgresql.git;h=4c8e00ae9ae ------ regards, Yura Sokolov aka funny-falcon