Thomas Munro <thomas.mu...@gmail.com> writes: > On Wed, Jul 17, 2019 at 11:06 AM Jerry Sievers <gsiever...@comcast.net> wrote: > >> (gdb) p *scan->rs_parallel >> Cannot access memory at address 0x7fa673a54108 > > So I guess one question is: was it a valid address that's been > unexpectedly unmapped, or is the pointer corrupted? Any chance you > can strace the backend and pull out the map, unmap calls?
There were about 60k lines from strace including these few... mmap(NULL, 528384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3d0127a000 mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3d01239000 mmap(NULL, 287624, PROT_READ|PROT_WRITE, MAP_SHARED, 124, 0) = 0x7f3d011f2000 mmap(NULL, 262504, PROT_READ|PROT_WRITE, MAP_SHARED, 124, 0) = 0x7f3d011b1000 munmap(0x7f3d011b1000, 262504) = 0 Thx -- Jerry Sievers Postgres DBA/Development Consulting e: postgres.consult...@comcast.net
