Hi Ben, thanks for the quick response.
> > On Wed, 24 Jun 2015, Osipov, Michael wrote: > > > Hi folks, > > > > we are trying to perform some LDAP requests with Perl against Active > Directory > > with Kerberos auth by MIT Kerberos. > > A core file is dumped and following written to stderr: > > $ ./ldap.pl > > Assertion failed: __thread_init == NULL, file > ../../../../../core/libs/libc/shared_em_32_perf/../core/threads/pthread_st > ubs1.c, line 1045 > > Abbruchkommando (Speicherabzug geschrieben) > > > > I first have assumed that the Perl module is broken but I guess it > isn't?! > > Loading the core file into GDB gives me: > > > ========================================================================== > ===== > > (gdb) where > > #0 0x60000000c020f6d0:0 in _lwp_kill+0x30 () > > from /usr/lib/hpux32/libpthread.so.1 > > #1 0x60000000c0174be0:0 in pthread_kill+0x9f0 () > > from /usr/lib/hpux32/libpthread.so.1 > > #2 0x60000000c0403460:0 in raise+0xe0 () from /usr/lib/hpux32/libc.so.1 > > #3 0x60000000c05277b0:0 in abort+0x170 () from > /usr/lib/hpux32/libc.so.1 > > #4 0x60000000c03ce5f0:0 in _assert+0x260 () from > /usr/lib/hpux32/libc.so.1 > > #5 0x60000000c0590980:0 in pthread_once+0x80 () from > /usr/lib/hpux32/libc.so.1 > > #6 0x60000000c4bab160:0 in pkinit_init_plg_crypto () > > at pkinit_crypto_openssl.c:410 > > This pthread_once() stuff is in the library initializor for pkinit's use > of openssl, thought it's not immediately clear what assertion is being > made in the innards of libc. The fact that the file named in the > assertion failure message is named pthread_stubs1.c makes me wonder if > there is an issue with an executable which was not compiled as threaded > (i.e., is compiled to use the stub implementation) then loaded an object > which uses the pthread interfaces, but that is basically pure speculation. > I don't have enough experience with HP-UX to have any sense of how > plausible that might be. Based on your explanation, I have made some digging: The Perl installation provided by HP says (perl -V) it is multithreaded. After that I have recompiled and lined the GSSAPI Perl module against 1.13.1. According to HP's compiler options -mt has to be passed. I have added that to the Makefile. Calling gss_init_sec_context from Perl gives me the same crash. So I guess, some C binding from Perl isn't multithreading aware. [1] Unfortunately, I cannot go further than that because my experience stops here. > [...] > > As a workaround, I would recompile MIT Kerberos on all servers without > pkinit > > for now. > > That workaround seems advisable for now. At least I have one now. Maybe someone else will share some wisdom on that. Thank you a lot, Michael [1] http://search.cpan.org/~perigrin/HTTP-Thin-UserAgent-0.011/local/lib/perl5/darwin-2level/Net/SSLeay.pod#Combining_Net::SSLeay_with_other_modules_linked_with_openssl ________________________________________________ Kerberos mailing list Kerberos@mit.edu https://mailman.mit.edu/mailman/listinfo/kerberos
