On Mon, Dec 20, 2021 at 03:22:31PM +0100, Christoph Moench-Tegeder wrote: > Active FIPS mode (/proc/sys/crypto/fips_enabled => 1) on the server does > produce this behaviour.
Most likely, this is a build linked with OpenSSL? The way MD5 hashes are computed in Postgres has largely changed in 14, and the code has been refactored so as we rely on the EVP APIs from OpenSSL when building with --with-ssl=openssl, having as direct consequence to allocate a bit more memory every time a hash is computed. My guess is that this comes from pg_cryptohash_create() in cryptohash_openssl.c, with a complain coming from OpenSSL's EVP_MD_CTX_create(), but there are other palloc() calls in this area as well. -- Michael
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