This is most likely related to a copy node bug which has been fixed in a .4 release. Ross fixed per an issue I opened. Although the .4 release is labled as a pre-release, it is stable with the exception of the memory bug.
Upgrade and it will most likely fix the problem. See issue #4635 (now closed) http://rubyforge.org/tracker/index.php?func=detail&aid=4635&group_id=494&atid=1971 Doug On 8/22/07, Marc Munro <[EMAIL PROTECTED]> wrote: > > Folks, > I have a reproducible crash using libxml. I'd like some suggestions on > how I can track this down as it's become a show-stopper for my current > project. This is from a libxml gem created from svn this morning. > > I can write and debug C but I'd like some suggestions on what to look > for, and what to try. I am inclined to modify all calls to free() to > zero or set the allocated memory chunk before freeing it in the hope > that this will make it obvious where things are breaking. Having not > hacked ruby before I am not sure how easy this will be. I'm also > wondering whether any of the standard C memory testing tools can be > easily incorporated into the ruby build. > > I'd welcome any suggestions/random thoughts/shared experiences/anything > from anyone at this stage :-) > > Here is the backtrace, in case it helps. > > *** glibc detected *** ruby: double free or corruption (fasttop): > 0x081f98d8 *** > ======= Backtrace: ========= > /lib/libc.so.6[0xb7d08824] > /lib/libc.so.6(cfree+0x90)[0xb7d0be90] > /usr/lib/libruby1.8.so.1.8(ruby_xfree+0x37)[0xb7e99d67] > /usr/lib/libxml2.so.2(xmlFreeNodeList+0x11d)[0xb7b0eadd] > /usr/lib/libxml2.so.2(xmlFreeProp+0x52)[0xb7b0ec12] > /usr/lib/libxml2.so.2(xmlFreePropList+0x1b)[0xb7b0ee8b] > /usr/lib/libxml2.so.2(xmlFreeNodeList+0xba)[0xb7b0ea7a] > /usr/lib/libxml2.so.2(xmlFreeNodeList+0x96)[0xb7b0ea56] > /usr/lib/libxml2.so.2(xmlFreeNode+0x7b)[0xb7b0ef1b] > /usr/lib/ruby/1.8/i486-linux/xml/libxml_so.so(ruby_xml_node_free > +0x5d)[0xb7c0abdd] > /usr/lib/libruby1.8.so.1.8(rb_gc_call_finalizer_at_exit > +0xa7)[0xb7e9a027] > /usr/lib/libruby1.8.so.1.8[0xb7e802a7] > /usr/lib/libruby1.8.so.1.8(ruby_cleanup+0x103)[0xb7e88293] > /usr/lib/libruby1.8.so.1.8(ruby_stop+0x1d)[0xb7e8839d] > /usr/lib/libruby1.8.so.1.8[0xb7e93181] > ruby[0x80486bd] > /lib/libc.so.6(__libc_start_main+0xe0)[0xb7cb5030] > ruby[0x80485e1] > ======= Memory map: ======== > 08048000-08049000 r-xp 00000000 03:01 21071 /usr/bin/ruby1.8 > 08049000-0804a000 rw-p 00000000 03:01 21071 /usr/bin/ruby1.8 > 0804a000-088f6000 rw-p 0804a000 00:00 0 [heap] > b7800000-b7821000 rw-p b7800000 00:00 0 > b7821000-b7900000 ---p b7821000 00:00 0 > b79de000-b79e6000 rw-p b79de000 00:00 0 > b79e9000-b79f3000 r-xp 00000000 03:01 472100 /lib/libgcc_s.so.1 > b79f3000-b79f4000 rw-p 00009000 03:01 472100 /lib/libgcc_s.so.1 > b7a07000-b7a56000 r-xp 00000000 03:01 > 19373 /usr/lib/libgcrypt.so.11.2.3 > b7a56000-b7a58000 rw-p 0004f000 03:01 > 19373 /usr/lib/libgcrypt.so.11.2.3 > b7a58000-b7a68000 r-xp 00000000 03:01 > 17836 /usr/lib/libexslt.so.0.8.13 > b7a68000-b7a69000 rw-p 0000f000 03:01 > 17836 /usr/lib/libexslt.so.0.8.13 > b7a69000-b7a9c000 r-xp 00000000 03:01 > 21872 /usr/lib/libxslt.so.1.1.21 > b7a9c000-b7a9d000 rw-p 00032000 03:01 > 21872 /usr/lib/libxslt.so.1.1.21 > b7a9d000-b7ab1000 r-xp 00000000 03:01 233293 /lib/libnsl-2.6.so > b7ab1000-b7ab3000 rw-p 00013000 03:01 233293 /lib/libnsl-2.6.so > b7ab3000-b7ab5000 rw-p b7ab3000 00:00 0 > b7ab5000-b7ac9000 r-xp 00000000 03:01 > 18146 /usr/lib/libz.so.1.2.3.3 > b7ac9000-b7aca000 rw-p 00013000 03:01 > 18146 /usr/lib/libz.so.1.2.3.3 > b7aca000-b7be1000 r-xp 00000000 03:01 > 16657 /usr/lib/libxml2.so.2.6.29 > b7be1000-b7be6000 rw-p 00116000 03:01 > 16657 /usr/lib/libxml2.so.2.6.29 > b7be6000-b7be8000 rw-p b7be6000 00:00 0 > b7be8000-b7bfa000 rw-p b7be8000 00:00 0 > b7bfa000-b7c14000 r-xp 00000000 03:01 > 146364 /usr/lib/ruby/1.8/i486-linux/xml/libxml_so.so > b7c14000-b7c15000 rw-p 0001a000 03:01 > 146364 /usr/lib/ruby/1.8/i486-linux/xml/libxml_so.so > b7c15000-b7c9f000 rw-p b7c15000 00:00 0 > b7c9f000-b7de0000 r-xp 00000000 03:01 233283 /lib/libc-2.6.so > b7de0000-b7de1000 r--p 00141000 03:01 233283 /lib/libc-2.6.so > b7de1000-b7de3000 rw-p 00142000 03:01 233283 /lib/libc-2.6.so > b7de3000-b7de6000 rw-p b7de3000 00:00 0 > b7de6000-b7e0b000 r-xp 00000000 03:01 233287 /lib/libm-2.6.so > b7e0b000-b7e0d000 rw-p 00024000 03:01 233287 /lib/libm-2.6.so > b7e0d000-b7e12000 r-xp 00000000 03:01 233285 /lib/libcrypt-2.6.so > b7e12000-b7e14000 rw-p 00004000 03:01 233285 /lib/libcrypt-2.6.so > b7e14000-b7e3b000 rw-p b7e14000 00:00 0 > b7e3b000-b7e3d000 r-xp 00000000 03:01 233286 /lib/libdl-2.6.so > b7e3d000-b7e3f000 rw-p 00001000 03:01 233286 /lib/libdl-2.6.so > b7e3f000-b7e40000 rw-p b7e3f000 00:00 0 > b7e40000-b7e53000 r-xp 00000000 03:01 233301 /lib/libpthread-2.6.so > b7e53000-b7e55000 rw-p 00012000 03:01 233301 /lib/libpthread-2.6.so > b7e55000-b7e57000 rw-p b7e55000 00:00 0 > b7e57000-b7f14000 r-xp 00000000 03:01 > 29683 /usr/lib/libruby1.8.so.1.8.6 > b7f14000-b7f17000 rw-p 000bc000 03:01 > 29683 /usr/lib/libruby1.8.so.1.8.6 > b7f17000-b7f26000 rw-p b7f17000 00:00 0 > b7f28000-b7f2a000 rw-p b7f28000 00:00 0 > b7f2a000-b7f2d000 r-xp 00000000 03:01 > 18898 /usr/lib/libgpg-error.so.0.3.0 > b7f2d000-b7f2e000 rw-p 00002000 03:01 > 18898 /usr/lib/libgpg-error.so.0.3.0 > b7f2e000-b7f33000 r-xp 00000000 03:01 > 146769 /usr/lib/ruby/1.8/i486-linux/xml/libxslt.so > b7f33000-b7f34000 rw-p 00004000 03:01 > 146769 /usr/lib/ruby/1.8/i486-linux/xml/libxslt.so > b7f34000-b7f38000 r-xp 00000000 03:01 > 150566 /usr/lib/ruby/1.8/i486-linux/stringio.so > b7f38000-b7f39000 rw-p 00003000 03:01 > 150566 /usr/lib/ruby/1.8/i486-linux/stringio.so > b7f39000-b7f3b000 rw-p b7f39000 00:00 0 > b7f3b000-b7f57000 r-xp 00000000 03:01 991671 /lib/ld-2.6.so > b7f57000-b7f59000 rw-p 0001b000 03:01 991671 /lib/ld-2.6.so > bf9f5000-bfa57000 rw-p bf9f5000 00:00 0 [stack] > ffffe000-fffff000 ---p 00000000 00:00 0 [vdso] > Aborted > > > __ > Marc > > _______________________________________________ > libxml-devel mailing list > libxml-devel@rubyforge.org > http://rubyforge.org/mailman/listinfo/libxml-devel > >
_______________________________________________ libxml-devel mailing list libxml-devel@rubyforge.org http://rubyforge.org/mailman/listinfo/libxml-devel
