Horton

Re: FW: query pg_stat_ssl hang 100%cpu

Thomas Munro <thomas.munro@gmail.com>

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From: Thomas Munro <thomas.munro@gmail.com>
To: "James Pang (chaolpan)" <chaolpan@cisco.com>
Cc: Michael Paquier <michael@paquier.xyz>, PostgreSQL mailing lists <pgsql-bugs@lists.postgresql.org>
Date: 2023-09-07T10:01:12Z
Lists: pgsql-bugs, pgsql-performance 
On Thu, Sep 7, 2023 at 9:38 PM James Pang (chaolpan) <chaolpan@cisco.com> wrote:
> (gdb) p  RecordCacheArrayLen
> $3 = 0

Clearly this system lacks check against wrapping around, but it must
be hard work to allocate billions of typmods...

Or maybe if in an earlier call we assigned RecordCacheArray but the
allocation of RecordIdentifierArray failed (a clue would be that it is
still NULL), we never manage to assign RecordCacheArrayLen a non-zero
value?  But it must be unlikely for a small allocation to fail...

Commits

  1. Fix exception safety bug in typcache.c.