As this is probably more related to mod_perl than mason specific i've
moved the thread to this list. I'll try and narrow the problem code down
further tomorrow, but maybe someone has some insight ?
- BTW mod_perl is not built as a dso
Cheers.
> Hi,
>
> Our sites experience intermittent segfaults (Segmentation Fault (11))
> when serving mason generated pages, these seem to be completely random
> in
> frequency and called component (though components do share common module
> code), and occur infrequently, every few thousand requests or so.
>
> The servers are very busy, though load and memory usage are light.
>
> Setup Details:
>
> Mason 0.87 (Just tried 0.88, same intermittent problem)
> Perl 5.005_03
> mod_perl 1.24
> Apache 1.3.12
> Linux 2.2.16
>
> I've tried mason using Apache::Request and CGI.pm to handle %ARGS - same
> problem.
>
> Backtrace, obtained according to mod_perl SUPPORT file
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x80ed2b2 in Perl_pp_entersub ()
>
> #0 0x80ed2b2 in Perl_pp_entersub ()
> #1 0x80bf38c in perl_call_sv ()
> #2 0x80e13cc in Perl_croak ()
> #3 0x80ee02a in Perl_sv_upgrade ()
> #4 0x80c1d82 in Perl_gv_init ()
> #5 0x80c2e19 in Perl_gv_fetchpv ()
> #6 0x8087f1e in XS_Apache_finfo ()
> #7 0x80ecfb6 in Perl_pp_entersub ()
> #8 0x8116f5d in Perl_runops_standard ()
> #9 0x80bf3a1 in perl_call_sv ()
> #10 0x807c1cb in perl_call_handler ()
> #11 0x807b9db in perl_run_stacked_handlers ()
> #12 0x8079f5d in perl_handler ()
> #13 0x80950e3 in ap_invoke_handler ()
> #14 0x80a85b9 in ap_some_auth_required ()
> #15 0x80a861c in ap_process_request ()
> #16 0x809ff0e in ap_child_terminate ()
> #17 0x80a009c in ap_child_terminate ()
> #18 0x80a01f9 in ap_child_terminate ()
> #19 0x80a0826 in ap_child_terminate ()
> #20 0x80a0fb3 in main ()
> #21 0x400941eb in __libc_start_main (main=0x80a0c6c <main>, argc=6,
> argv=0xbffffc94, init=0x8060090 <_init>, fini=0x811703c <_fini>,
> rtld_fini=0x4000a610 <_dl_fini>, stack_end=0xbffffc8c)
> at ../sysdeps/generic/libc-start.c:90
>
> Any clues on how I can further debug this problem to try and get to the
> bottom
> of it. Is this a question better asked on the mod_perl list?
>
> BTW - I'm not using PerlFreshRestart
>
> Cheers,
> Mark
>
Replying to my own email - here's a backtrace with more debug info
Program received signal SIGSEGV, Segmentation fault.
0x80ed2b2 in Perl_pp_entersub ()
(gdb) bt
#0 0x80ed2b2 in Perl_pp_entersub ()
#1 0x8116f5d in Perl_runops_standard ()
#2 0x80bf3a1 in perl_call_sv ()
#3 0x807c1cb in perl_call_handler (sv=0x81e6cd8, r=0x861ac5c, args=0x0)
at mod_perl.c:1643
#4 0x807b9db in perl_run_stacked_handlers (hook=0x811c819
"PerlHandler",
r=0x861ac5c, handlers=0x81e6cc0) at mod_perl.c:1362
#5 0x8079f5d in perl_handler (r=0x861ac5c) at mod_perl.c:905
#6 0x80950e3 in ap_invoke_handler (r=0x861ac5c) at http_config.c:508
#7 0x80a85b9 in process_request_internal (r=0x861ac5c) at
http_request.c:1215
#8 0x80a861c in ap_process_request (r=0x861ac5c) at http_request.c:1231
#9 0x809ff0e in child_main (child_num_arg=0) at http_main.c:4177
#10 0x80a009c in make_child (s=0x814de0c, slot=0, now=967737451)
at http_main.c:4281
#11 0x80a01f9 in startup_children (number_to_start=3) at
http_main.c:4363
#12 0x80a0826 in standalone_main (argc=6, argv=0xbffffc64) at
http_main.c:4651
#13 0x80a0fb3 in main (argc=6, argv=0xbffffc64) at http_main.c:4978
