Date: Fri, 29 Feb 2008 15:03:22 -0800 From: Derek Douville <ddouville@ncircle.com> To: freebsd-threads@freebsd.org Subject: Problem with 7.0-RELEASE amd64 lib32/libthr.so support of libpthread.so 32-bit binaries Message-ID: <47C88F3A.3020306@ncircle.com>
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Hi everyone,
I need some help with threading lib32 compat programs under 7.0, which
is supposed to fix a lot of broken areas of 6.x. We ran into
32bit-compat threading issues under 6.2 amd64 and started testing
7.0-RELEASE today to see if we can get a 32-bit program that was
compiled with -pthread to execute successfully. So far, this is my
environment:
(a) FreeBSD 7.0-RELEASE amd64 installed with lib32 compatibility
(b) /usr/ports/compat6x installed
(c) /etc/libmap32.conf is empty
The test code that revealed the threading issues under 6.x is this:
ghost# cat pthread-crash.c
#include <stdio.h>
#include <pthread.h>
void *thread(void *data) {
puts("Thread.");
return NULL;
}
int main() {
pthread_t pth;
void *pv;
pthread_create(&pth,NULL,thread,NULL);
pthread_join(pth,&pv);
return 0;
}
ghost# file pthread-crash
pthread-crash: ELF 32-bit LSB executable, Intel 80386, version 1
(FreeBSD), dynamically linked (uses shared libs), not stripped
This code, when compiled natively on FreeBSD 6.2 i386 with -pthread, or
on an amd64 platform using -m32, yields the following error messages
from my amd64-bit test system (described above):
ghost# ./pthread-crash
Fatal error 'can not create signal daemon thread!
' at line 236 in file /usr/src/lib/libpthread/thread/thr_sig.c (errno = 22)
Abort (core dumped)
(gdb) bt
#0 0x2809bacb in pthread_testcancel ()
from /usr/local/lib32/compat/libpthread.so.2
#1 0x28089972 in sigaction () from /usr/local/lib32/compat/libpthread.so.2
#2 0x28082cb9 in pthread_kill () from
/usr/local/lib32/compat/libpthread.so.2
#3 0x28082534 in raise () from /usr/local/lib32/compat/libpthread.so.2
#4 0x2817162c in abort () from /usr/local/lib32/compat/libc.so.6
#5 0x2809c2fd in pthread_testcancel ()
from /usr/local/lib32/compat/libpthread.so.2
#6 0x28087685 in sigaction () from /usr/local/lib32/compat/libpthread.so.2
#7 0x2809232c in pthread_mutexattr_init ()
from /usr/local/lib32/compat/libpthread.so.2
#8 0x2808b410 in pthread_create () from
/usr/local/lib32/compat/libpthread.so.2
#9 0x0804861e in main ()
Any help or feedback is greatly appreciated.
-Derek
--
Derek Douville (derek at ncircle.com)
Senior Platform Engineer
nCircle Network Security
W: +1-415-625-5990 YIM: douvilld
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