Description
The following code:
<?php
$a=[]; $b=[];
for($i=0;$i<1000000;$i++){ $a=[$a]; $b=[$b]; }
var_dump($a == $b);Resulted in this output:
AddressSanitizer:DEADLYSIGNAL
=================================================================
==52==ERROR: AddressSanitizer: stack-overflow on address 0x7fff098ceff8 (pc 0x563063741b4b bp 0x7fff098cf000 sp 0x7fff098cf000 T0)
#0 0x563063741b4b in zend_hash_index_find /home/php-src/Zend/zend_hash.c:2720
#1 0x56306374450b in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3178
#2 0x56306374450b in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#3 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#4 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#5 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#6 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#7 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#8 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#9 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#10 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#11 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#12 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#13 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#14 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#15 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#16 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#17 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#18 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#19 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#20 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#21 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#22 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#23 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#24 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#25 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#26 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#27 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#28 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#29 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#30 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#31 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#32 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#33 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#34 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#35 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#36 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#37 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#38 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#39 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#40 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#41 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#42 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#43 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#44 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#45 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#46 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#47 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#48 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#49 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#50 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#51 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#52 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#53 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#54 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#55 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#56 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#57 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#58 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#59 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#60 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#61 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#62 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#63 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#64 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#65 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#66 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#67 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#68 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#69 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#70 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#71 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#72 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#73 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#74 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#75 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#76 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#77 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#78 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#79 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#80 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#81 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#82 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#83 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#84 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#85 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#86 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#87 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#88 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#89 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#90 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#91 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#92 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#93 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#94 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#95 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#96 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#97 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#98 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#99 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#100 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#101 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#102 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#103 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#104 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#105 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#106 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#107 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#108 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#109 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#110 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#111 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#112 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#113 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#114 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#115 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#116 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#117 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#118 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#119 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#120 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#121 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#122 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#123 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#124 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#125 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#126 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#127 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#128 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#129 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#130 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#131 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#132 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#133 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#134 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#135 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#136 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#137 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#138 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#139 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#140 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#141 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#142 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#143 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#144 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#145 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#146 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#147 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#148 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#149 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#150 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#151 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#152 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#153 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#154 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#155 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#156 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#157 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#158 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#159 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#160 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#161 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#162 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#163 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#164 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#165 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#166 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#167 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#168 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#169 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#170 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#171 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#172 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#173 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#174 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#175 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#176 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#177 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#178 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#179 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#180 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#181 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#182 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#183 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#184 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#185 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#186 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#187 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#188 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#189 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#190 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#191 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#192 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#193 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#194 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#195 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#196 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#197 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#198 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#199 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#200 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
#201 0x5630637448f1 in zend_hash_compare_impl /home/php-src/Zend/zend_hash.c:3204
#202 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#203 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
#204 0x56306384ee2b in zend_compare_arrays /home/php-src/Zend/zend_operators.c:3482
#205 0x56306384ee2b in zend_compare /home/php-src/Zend/zend_operators.c:2322
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#412 0x5630637448f1 in zend_hash_compare /home/php-src/Zend/zend_hash.c:3234
#413 0x56306383e00e in zend_compare_symbol_tables /home/php-src/Zend/zend_operators.c:3471
SUMMARY: AddressSanitizer: stack-overflow /home/php-src/Zend/zend_hash.c:2720 in zend_hash_index_find
==52==ABORTING
USE_ZEND_ALLOC=0 php -d "opcache.enable=1" -d "opcache.enable_cli=1" -d "opcache.jit=tracing" -d "opcache.jit_hot_loop=1" -d "opcache.jit_hot_func=1" poc.php
PHP Version
Operating System
ubuntu 22.04
Description
The following code:
Resulted in this output:
PHP Version
Operating System
ubuntu 22.04