Greetings, So my last posts about crashes in 'ruby_xml_xpath_object_mark' turned out to be a non-issue since the problem is already fixed. However, I'm still getting *lots* of random crashes which prevent my web application to stay up for more than 10mn, which is of course unacceptable.
The strange thing is that those crashes have different code paths but all end up in the system malloc. Here are four examples... Example 1: 0 libSystem.B.dylib 0x90003cf4 szone_malloc + 956 1 libSystem.B.dylib 0x90003600 malloc + 632 2 libxml2.2.dylib 0x015615e8 xmlXPathNodeSetCreate + 56 3 libxml2.2.dylib 0x01561764 xmlXPathNewNodeSet + 116 4 libxml2.2.dylib 0x01572b14 xmlXPathRunStreamEval + 148 5 libxml2.2.dylib 0x01572f28 xmlXPathRunEval + 248 6 libxml2.2.dylib 0x015737fc xmlXPathCompiledEvalInternal + 364 7 libxml2.2.dylib 0x01573950 xmlXPathCompiledEval + 32 8 libxml_so.bundle 0x01132c38 ruby_xml_xpath_find + 472 9 libxml_so.bundle 0x01132d58 ruby_xml_xpath_find2 + 56 10 libxml_so.bundle 0x0112978c ruby_xml_node_find + 96 11 libxml_so.bundle 0x011297b0 ruby_xml_node_find_first + 16 12 libruby.dylib 0x002254dc call_cfunc + 256 13 libruby.dylib 0x00224b20 rb_call0 + 1168 .... Example 2: 0 libSystem.B.dylib 0x90003cf4 szone_malloc + 956 1 libSystem.B.dylib 0x90003600 malloc + 632 2 libxml2.2.dylib 0x01561728 xmlXPathNewNodeSet + 56 3 libxml2.2.dylib 0x01570b54 xmlXPathCompOpEvalPredicate + 260 4 libxml2.2.dylib 0x015719c4 xmlXPathNodeCollectAndTest + 3380 5 libxml2.2.dylib 0x0156fa28 xmlXPathCompOpEval + 2072 6 libxml2.2.dylib 0x015703a0 xmlXPathCompOpEval + 4496 7 libxml2.2.dylib 0x01572fe8 xmlXPathRunEval + 440 8 libxml2.2.dylib 0x015737fc xmlXPathCompiledEvalInternal + 364 9 libxml2.2.dylib 0x01573950 xmlXPathCompiledEval + 32 10 libxml_so.bundle 0x01132c38 ruby_xml_xpath_find + 472 11 libxml_so.bundle 0x01132d58 ruby_xml_xpath_find2 + 56 12 libxml_so.bundle 0x0112978c ruby_xml_node_find + 96 13 libxml_so.bundle 0x011297b0 ruby_xml_node_find_first + 16 14 libruby.dylib 0x002254dc call_cfunc + 256 15 libruby.dylib 0x00224b20 rb_call0 + 1168 .... Example 3: 0 libSystem.B.dylib 0x90003cf4 szone_malloc + 956 1 libSystem.B.dylib 0x90003600 malloc + 632 2 libruby.dylib 0x002379d8 ruby_xmalloc + 136 3 libruby.dylib 0x0021f268 rb_eval + 6780 4 libruby.dylib 0x0021dd44 rb_eval + 1368 5 libruby.dylib 0x00225148 rb_call0 + 2744 6 libruby.dylib 0x00225b18 rb_call + 600 7 libruby.dylib 0x0021f41c rb_eval + 7216 8 libruby.dylib 0x0021dd44 rb_eval + 1368 9 libruby.dylib 0x0021f220 rb_eval + 6708 10 libruby.dylib 0x0021f298 rb_eval + 6828 11 libruby.dylib 0x00222c24 rb_yield_0 + 1368 12 libruby.dylib 0x00223070 rb_yield_values + 180 13 libruby.dylib 0x00215b2c each_with_index_i + 48 .... Example 4: 0 libSystem.B.dylib 0x90003cf4 szone_malloc + 956 1 libSystem.B.dylib 0x90003600 malloc + 632 2 libxml2.2.dylib 0x0158a918 xmlStrndup + 72 3 libxml2.2.dylib 0x01530fc4 xmlNewPropInternal + 340 4 libxml2.2.dylib 0x015e2fbc xmlSAX2StartElementNs + 1468 5 libxml2.2.dylib 0x0151bbbc xmlParseStartTag2 + 3612 6 libxml2.2.dylib 0x015282cc xmlParseElement + 220 7 libxml2.2.dylib 0x01526ae8 xmlParseContent + 312 8 libxml2.2.dylib 0x015284d8 xmlParseElement + 744 9 libxml2.2.dylib 0x01526ae8 xmlParseContent + 312 10 libxml2.2.dylib 0x015284d8 xmlParseElement + 744 11 libxml2.2.dylib 0x01526ae8 xmlParseContent + 312 12 libxml2.2.dylib 0x015284d8 xmlParseElement + 744 13 libxml2.2.dylib 0x01526ae8 xmlParseContent + 312 14 libxml2.2.dylib 0x015284d8 xmlParseElement + 744 15 libxml2.2.dylib 0x01528c38 xmlParseDocument + 1096 16 libxml_so.bundle 0x0112de60 ruby_xml_parser_parse + 96 17 libruby.dylib 0x002254f0 call_cfunc + 276 .... I have a bad feeling about these problems, I don't see why malloc would crash. Anyone have an idea ? This is on OS X by the way. -- Luc Heinrich _______________________________________________ libxml-devel mailing list libxml-devel@rubyforge.org http://rubyforge.org/mailman/listinfo/libxml-devel
