On Thu, Jan 19, 2017 at 5:45 PM, Peter Geoghegan <p...@heroku.com> wrote: > A customer is on 9.6.1, and complains of a segfault observed at least > 3 times.
> I can use GDB to get details of the instruction pointer that appeared > in the kernel trap error, which shows a function from the expanded > value representation infrastructure: > > (gdb) info symbol 0x55fcf08b0491 > EOH_get_flat_size + 1 in section .text of /usr/lib/postgresql/9.6/bin/postgres > (gdb) info symbol 0x55fcf08b0490 > EOH_get_flat_size in section .text of /usr/lib/postgresql/9.6/bin/postgres > (gdb) disassemble 0x55fcf08b0490 > Dump of assembler code for function EOH_get_flat_size: > 0x000055fcf08b0490 <+0>: push %rbp > 0x000055fcf08b0491 <+1>: mov 0x8(%rdi),%rax > 0x000055fcf08b0495 <+5>: mov %rsp,%rbp > 0x000055fcf08b0498 <+8>: pop %rbp > 0x000055fcf08b0499 <+9>: mov (%rax),%rax > 0x000055fcf08b049c <+12>: jmpq *%rax > End of assembler dump. For the sake of the archives: this now looks very much like the issue that Tom just fixed with commit 9bf4068cc321a4d44ac54089ab651a49d89bb567. -- Peter Geoghegan -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
