Hi, I've been load-testing our module (mod_pagespeed<http://code.google.com/speed/page-speed/docs/module.html>) with httpd 2.2.16 built with these options: --enable-pool-debug --with-mpm=worker I've been getting periodic aborts from apr_table_addn that don't look like they are from my module. These do not occur when using 'prefork'.
Here's a stack-trace recovered from a core file: Program terminated with signal 6, Aborted. #0 0x00007fdd3bbd9a75 in raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 64 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory. in ../nptl/sysdeps/unix/sysv/linux/raise.c (gdb) where #0 0x00007fdd3bbd9a75 in raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #1 0x00007fdd3bbdd5c0 in abort () at abort.c:92 #2 0x00007fdd3c9a2e57 in apr_table_addn (t=0xe84980, key=0xd51d60 "Accept-Encoding", val=0xd51d71 "identity") at tables/apr_tables.c:813 #3 0x0000000000433e36 in ap_get_mime_headers_core (r=0xf27de0, bb=0xdda3a0) at protocol.c:799 #4 0x000000000043456b in ap_read_request (conn=0xe51620) at protocol.c:918 #5 0x000000000047f772 in ap_process_http_connection (c=0xe51620) at http_core.c:183 #6 0x0000000000446e28 in ap_run_process_connection (c=0xe51620) at connection.c:43 #7 0x00000000004b3297 in process_socket (thd=<value optimized out>, dummy=<value optimized out>) at worker.c:544 #8 worker_thread (thd=<value optimized out>, dummy=<value optimized out>) at worker.c:894 #9 0x00007fdd3c1339ca in start_thread (arg=<value optimized out>) at pthread_create.c:300 #10 0x00007fdd3bc8c70d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 Questions 1. Is this a bug in httpd? 2. Or could I somehow have caused this with a programming error in my module? 3. Or is enable-pool-debug simply incompatible with the Worker MPM? Thanks, -Josh
