Crashes in libthr?

I updated one of my servers, and WHILE DOING THE INSTALLWORLD, I get 
segfaults.

ANY multithreaded program crashes.

I reverted libthr, and it's fine.

borg.lerctr.org / # gdb -c zfs.core /sbin/zfs
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you 
are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for 
details.
This GDB was configured as "amd64-marcel-freebsd"...
Core was generated by `zfs'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libjail.so.1...Reading symbols from 
/usr/lib/debug//lib/libjail.so.1.debug...done.
done.
Loaded symbols for /lib/libjail.so.1
Reading symbols from /lib/libnvpair.so.2...Reading symbols from 
/usr/lib/debug//lib/libnvpair.so.2.debug...done.
done.
Loaded symbols for /lib/libnvpair.so.2
Reading symbols from /lib/libuutil.so.2...Reading symbols from 
/usr/lib/debug//lib/libuutil.so.2.debug...done.
done.
Loaded symbols for /lib/libuutil.so.2
Reading symbols from /lib/libzfs_core.so.2...Reading symbols from 
/usr/lib/debug//lib/libzfs_core.so.2.debug...done.
done.
Loaded symbols for /lib/libzfs_core.so.2
Reading symbols from /lib/libzfs.so.2...Reading symbols from 
/usr/lib/debug//lib/libzfs.so.2.debug...done.
done.
Loaded symbols for /lib/libzfs.so.2
Reading symbols from /lib/libc.so.7...Reading symbols from 
/usr/lib/debug//lib/libc.so.7.debug...done.
done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /lib/libmd.so.6...Reading symbols from 
/usr/lib/debug//lib/libmd.so.6.debug...done.
done.
Loaded symbols for /lib/libmd.so.6
Reading symbols from /lib/libumem.so.2...Reading symbols from 
/usr/lib/debug//lib/libumem.so.2.debug...done.
done.
Loaded symbols for /lib/libumem.so.2
Reading symbols from /lib/libutil.so.9...Reading symbols from 
/usr/lib/debug//lib/libutil.so.9.debug...done.
done.
Loaded symbols for /lib/libutil.so.9
Reading symbols from /lib/libm.so.5...Reading symbols from 
/usr/lib/debug//lib/libm.so.5.debug...done.
done.
Loaded symbols for /lib/libm.so.5
Reading symbols from /lib/libavl.so.2...Reading symbols from 
/usr/lib/debug//lib/libavl.so.2.debug...done.
done.
Loaded symbols for /lib/libavl.so.2
Reading symbols from /lib/libbsdxml.so.4...Reading symbols from 
/usr/lib/debug//lib/libbsdxml.so.4.debug...done.
done.
Loaded symbols for /lib/libbsdxml.so.4
Reading symbols from /lib/libgeom.so.5...Reading symbols from 
/usr/lib/debug//lib/libgeom.so.5.debug...done.
done.
Loaded symbols for /lib/libgeom.so.5
Reading symbols from /lib/libz.so.6...Reading symbols from 
/usr/lib/debug//lib/libz.so.6.debug...done.
done.
Loaded symbols for /lib/libz.so.6
Reading symbols from /lib/libthr.so.3...done.
Loaded symbols for /lib/libthr.so.3
Reading symbols from /lib/libsbuf.so.6...Reading symbols from 
/usr/lib/debug//lib/libsbuf.so.6.debug...done.
done.
Loaded symbols for /lib/libsbuf.so.6
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0  0x0000000802703f81 in __pthread_cxa_finalize () from 
/lib/libthr.so.3
[New LWP 100957]
(gdb) bt
#0  0x0000000802703f81 in __pthread_cxa_finalize () from 
/lib/libthr.so.3
#1  0x0000000802703e85 in __pthread_cxa_finalize () from 
/lib/libthr.so.3
#2  0x0000000802707052 in ?? () from /lib/libthr.so.3
#3  0x000000080063fc00 in ?? ()
#4  0x00007fffffffe638 in ?? ()
#5  0x00007fffffffe5b0 in ?? ()
#6  0x00000008026f8fd6 in atoi_at_plt () from /lib/libthr.so.3
#7  0x00007fffffffe5b0 in ?? ()
#8  0x000000080061adfd in r_debug_state () from /libexec/ld-elf.so.1
Previous frame inner to this frame (corrupt stack?)
(gdb)

old SVN: r296103
new SVN: r296796M
(The M is a nd6 patch from markj_at_)

this was a FULL buildworld/buildkernel.



-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: ler_at_lerctr.org
US Mail: 7011 W Parmer Ln, Apt 1115, Austin, TX 78729-6961