On Thu, Nov 14, 2024 at 10:26:58AM -0800, Noah Misch wrote: > On Thu, Nov 14, 2024 at 05:29:18PM +0100, Christoph Berg wrote: > > Re: Noah Misch > > > Based on a grep of PGXN code, here are some or all of the modules that > > > react > > > to sizeof(ResultRelInfo): > > > > > > $ grepx -r 'lloc.*ResultRelInfo' | tee /tmp/1 | sed 's/-[^:]*/:/'|sort -u > > > apacheage:: resultRelInfo = palloc(sizeof(ResultRelInfo)); > > > > Confirmed, crashing: AGE for 14..17 (12..13 seem fine) > > Can you share more about the crash, perhaps the following? > > - stack trace > - any server messages just before the crash > - which architecture (32-bit x86, 64-bit ARM, etc.) > - asserts enabled, or not? > > It's not immediately to clear to me why this would crash in a non-asserts > build. palloc issues a 512-byte chunk for sizeof(ResultRelInfo)==368 on v16, > so I expect no actual writing past the end of the chunk. I don't see > apacheage allocating a ResultRelInfo other than via one palloc per > ResultRelInfo (no arrays of them, no stack-allocated ResultRelInfo). I'll > also work on installing apacheage to get those answers locally.
On x86_64, I ran these with and without asserts: install PostgreSQL 16.4 install https://github.com/apache/age/tree/master make -C age installcheck install PostgreSQL 16.5 make -C age installcheck The non-asserts build passed. The asserts build failed with "+WARNING: problem in alloc set ExecutorState: detected write past chunk" throughout the diffs, but there were no crashes. (Note that AGE "make installcheck" creates a temporary installation, unlike PostgreSQL "make installcheck".) What might differ in how you tested?
