Re: Program received signal SIGBUS, Bus error. 0x80b2953 in ap_unescape_url()
Stas Bekman wrote: Richard Clarke wrote: Stas, Doesn't seem like an apreq problem. It happens in the modperl function. Any chance you can rebuild mod_perl with debug mode enabled (PERL_DEBUG=1), so we can see the arguments and file/linenumbers? See: http://perl.apache.org/docs/1.0/guide/debug.html#PERL_DEBUG_1_Build_Option Program received signal SIGBUS, Bus error. 0x80b445b in ap_unescape_url (url=0x8162e89 ) at util.c:1609 1609url[x] = '\0'; (gdb) bt #0 0x80b445b in ap_unescape_url (url=0x8162e89 ) at util.c:1609 #1 0x8085c20 in XS_Apache_unescape_url (cv=0x8227b0c) at Apache.c:931 Richard, attached is the real fix, which will be committed shortly. The problem is in the way perl's default typemap translates undefs into char *. It wasn't allocating any strings. The following does the right thing. I've tested that undefs are now happily accepted and you get a proper warnings under -w. Index: src/modules/perl/Apache.xs === RCS file: /home/cvs/modperl/src/modules/perl/Apache.xs,v retrieving revision 1.125 diff -u -r1.125 Apache.xs --- src/modules/perl/Apache.xs 6 Jul 2001 20:33:35 - 1.125 +++ src/modules/perl/Apache.xs 20 Feb 2003 05:11:36 - @@ -655,8 +655,11 @@ Apache r char * -unescape_url(string) -char *string +unescape_url(sv) +SV *sv + +INIT: +char *string = SvPV_force(sv, PL_na); CODE: unescape_url(string); __ Stas BekmanJAm_pH -- Just Another mod_perl Hacker http://stason.org/ mod_perl Guide --- http://perl.apache.org mailto:[EMAIL PROTECTED] http://use.perl.org http://apacheweek.com http://modperlbook.org http://apache.org http://ticketmaster.com
Program received signal SIGBUS, Bus error. 0x80b2953 in ap_unescape_url ()
I'm using FreeBSD 4.7 Release. perl 5.6.1 Mod_Perl/Apache Latest libapreq 1.1. Program received signal SIGBUS, Bus error. 0x80b2953 in ap_unescape_url () (gdb) bt #0 0x80b2953 in ap_unescape_url () #1 0x8084094 in XS_Apache_unescape_url () #2 0x8102623 in Perl_pp_entersub () #3 0x80fcf4e in Perl_runops_standard () #4 0x80c0266 in perl_call_sv () #5 0x80c004a in perl_call_sv () #6 0x807c6ba in perl_call_handler () #7 0x807bfc0 in perl_run_stacked_handlers () #8 0x807b083 in perl_translate () #9 0x8098863 in ap_cleanup_method_ptrs () #10 0x80988ca in ap_translate_name () #11 0x80adf00 in ap_some_auth_required () #12 0x80ae47e in ap_process_request () #13 0x80a4db7 in ap_child_terminate () #14 0x80a4f79 in ap_child_terminate () #15 0x80a50f2 in ap_child_terminate () #16 0x80a5724 in ap_child_terminate () #17 0x80a5f84 in main () #18 0x8061f4d in _start () (gdb) quit I'm performing unescape_uri() in a PerlTransHandler. This works perfectly well on my Linux libapreq 1.0 box, so I'll try 1.0 instead. I remember there was some discussion about 1.1 segv's when it was announced but a quick search told me these were aimed at either 5.8 or file uploads. Anyone got any suggestions whilst I go try libapreq 1.0 Richard.
Re: Program received signal SIGBUS, Bus error. 0x80b2953 in ap_unescape_url()
Richard Clarke wrote: I'm using FreeBSD 4.7 Release. perl 5.6.1 Mod_Perl/Apache Latest libapreq 1.1. Doesn't seem like an apreq problem. It happens in the modperl function. Any chance you can rebuild mod_perl with debug mode enabled (PERL_DEBUG=1), so we can see the arguments and file/linenumbers? See: http://perl.apache.org/docs/1.0/guide/debug.html#PERL_DEBUG_1_Build_Option Program received signal SIGBUS, Bus error. 0x80b2953 in ap_unescape_url () (gdb) bt #0 0x80b2953 in ap_unescape_url () #1 0x8084094 in XS_Apache_unescape_url () #2 0x8102623 in Perl_pp_entersub () #3 0x80fcf4e in Perl_runops_standard () #4 0x80c0266 in perl_call_sv () #5 0x80c004a in perl_call_sv () #6 0x807c6ba in perl_call_handler () #7 0x807bfc0 in perl_run_stacked_handlers () #8 0x807b083 in perl_translate () #9 0x8098863 in ap_cleanup_method_ptrs () #10 0x80988ca in ap_translate_name () #11 0x80adf00 in ap_some_auth_required () #12 0x80ae47e in ap_process_request () #13 0x80a4db7 in ap_child_terminate () #14 0x80a4f79 in ap_child_terminate () #15 0x80a50f2 in ap_child_terminate () #16 0x80a5724 in ap_child_terminate () #17 0x80a5f84 in main () #18 0x8061f4d in _start () (gdb) quit I'm performing unescape_uri() in a PerlTransHandler. This works perfectly well on my Linux libapreq 1.0 box, so I'll try 1.0 instead. I remember there was some discussion about 1.1 segv's when it was announced but a quick search told me these were aimed at either 5.8 or file uploads. Anyone got any suggestions whilst I go try libapreq 1.0 Richard. -- __ Stas BekmanJAm_pH -- Just Another mod_perl Hacker http://stason.org/ mod_perl Guide --- http://perl.apache.org mailto:[EMAIL PROTECTED] http://use.perl.org http://apacheweek.com http://modperlbook.org http://apache.org http://ticketmaster.com
Re: Program received signal SIGBUS, Bus error. 0x80b2953 in ap_unescape_url ()
Stas, Doesn't seem like an apreq problem. It happens in the modperl function. Any chance you can rebuild mod_perl with debug mode enabled (PERL_DEBUG=1), so we can see the arguments and file/linenumbers? See: http://perl.apache.org/docs/1.0/guide/debug.html#PERL_DEBUG_1_Build_Option Program received signal SIGBUS, Bus error. 0x80b445b in ap_unescape_url (url=0x8162e89 ) at util.c:1609 1609url[x] = '\0'; (gdb) bt #0 0x80b445b in ap_unescape_url (url=0x8162e89 ) at util.c:1609 #1 0x8085c20 in XS_Apache_unescape_url (cv=0x8227b0c) at Apache.c:931 #2 0x81040fb in Perl_pp_entersub () #3 0x80fea26 in Perl_runops_standard () #4 0x80c1d3e in S_call_body () #5 0x80c1b22 in perl_call_sv () #6 0x807d4de in perl_call_handler (sv=0x85cfb6c, r=0x8657034, args=0x0) at mod_perl.c:1658 #7 0x807cc69 in perl_run_stacked_handlers (hook=0x8146daa PerlTransHandler, r=0x8657034, handlers=0x85cfbe4) at mod_perl.c:1371 #8 0x807b78f in perl_translate (r=0x8657034) at mod_perl.c:999 #9 0x809a403 in run_method (r=0x8657034, offset=0, run_all=0) at http_config.c:370 #10 0x809a46a in ap_translate_name (r=0x8657034) at http_config.c:382 #11 0x80afa30 in process_request_internal (r=0x8657034) at http_request.c:1199 #12 0x80affae in ap_process_request (r=0x8657034) at http_request.c:1324 #13 0x80a691f in child_main (child_num_arg=0) at http_main.c:4603 #14 0x80a6ae1 in make_child (s=0x817f034, slot=0, now=1045623388) at http_main.c:4718 #15 0x80a6c5a in startup_children (number_to_start=50) at http_main.c:4800 #16 0x80a7288 in standalone_main (argc=2, argv=0xbfbffbb0) at http_main.c:5108 #17 0x80a7ae8 in main (argc=2, argv=0xbfbffbb0) at http_main.c:5456 #18 0x8061f95 in _start () Its worth noting that the same function runs fine in a contenthandler, just not in the transhandler. Richard.
Re: Program received signal SIGBUS, Bus error. 0x80b2953 in ap_unescape_url()
Richard Clarke wrote: Stas, Doesn't seem like an apreq problem. It happens in the modperl function. Any chance you can rebuild mod_perl with debug mode enabled (PERL_DEBUG=1), so we can see the arguments and file/linenumbers? See: http://perl.apache.org/docs/1.0/guide/debug.html#PERL_DEBUG_1_Build_Option Program received signal SIGBUS, Bus error. 0x80b445b in ap_unescape_url (url=0x8162e89 ) at util.c:1609 1609url[x] = '\0'; (gdb) bt #0 0x80b445b in ap_unescape_url (url=0x8162e89 ) at util.c:1609 #1 0x8085c20 in XS_Apache_unescape_url (cv=0x8227b0c) at Apache.c:931 much better ;) [...] Its worth noting that the same function runs fine in a contenthandler, just not in the transhandler. Since you don't show what the real code that fails, I can only offer to plug the hole in ap_unescape_url on the mod_perl side. I'll report the bug to the httpd-dev list. Index: src/modules/perl/Apache.xs === RCS file: /home/cvs/modperl/src/modules/perl/Apache.xs,v retrieving revision 1.125 diff -u -r1.125 Apache.xs --- src/modules/perl/Apache.xs 6 Jul 2001 20:33:35 - 1.125 +++ src/modules/perl/Apache.xs 19 Feb 2003 05:04:04 - @@ -659,7 +659,9 @@ char *string CODE: -unescape_url(string); +/* ap_unescape_url segfaults when is passed */ +if (string string[0] != '\0') +unescape_url(string); RETVAL = string; OUTPUT: __ Stas BekmanJAm_pH -- Just Another mod_perl Hacker http://stason.org/ mod_perl Guide --- http://perl.apache.org mailto:[EMAIL PROTECTED] http://use.perl.org http://apacheweek.com http://modperlbook.org http://apache.org http://ticketmaster.com
