SEGV zend_execute_API.c runtime error: member access within misaligned address 0x000000000002 for type 'const zend_op'

[YuanchengJiang]

Description

The following code:

<?php
try {
function foo() {
foo();}
foo();
} catch (\Throwable $_ffl_e) {}

Resulted in this output:

/home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_execute_API.c:701:22: runtime error: member access within misaligned address 0x000000000002 for type 'const zend_op' (aka 'const struct _zend_op'), which requires 8 byte alignment
0x000000000002: note: pointer points here
<memory cannot be printed>
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_execute_API.c:701:22 in 

To reproduce:

/home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/sapi/cli/php  -d opcache.enable_cli=1 -d opcache.jit=1254 ./test.php

Commit:

fd8eaaf153f958c66068e3bc71b950ee33cb56e8

Configurations:

CC="clang-12" CXX="clang++-12" CFLAGS="-DZEND_VERIFY_TYPE_INFERENCE" CXXFLAGS="-DZEND_VERIFY_TYPE_INFERENCE" ./configure --enable-debug --enable-address-sanitizer --enable-undefined-sanitizer --enable-re2c-cgoto --enable-fpm --enable-litespeed --enable-phpdbg-debug --enable-zts --enable-bcmath --enable-calendar --enable-dba --enable-dl-test --enable-exif --enable-ftp --enable-gd --enable-gd-jis-conv --enable-mbstring --enable-pcntl --enable-shmop --enable-soap --enable-sockets --enable-sysvmsg --enable-zend-test --with-zlib --with-bz2 --with-curl --with-enchant --with-gettext --with-gmp --with-mhash --with-ldap --with-libedit --with-readline --with-snmp --with-sodium --with-xsl --with-zip --with-mysqli --with-pdo-mysql --with-pdo-pgsql --with-pgsql --with-sqlite3 --with-pdo-sqlite --with-webp --with-jpeg --with-freetype --enable-sigchild --with-readline --with-pcre-jit --with-iconv

Operating System:

Ubuntu 20.04 Host, Docker 0599jiangyc/flowfusion:latest

This bug was found by fusion-fuzz

Related: #18899

PHP Version

nightly

Operating System

No response

[iliaal]

Should this even be fixed? This is just a recursive loop

[YuanchengJiang]

The following code:

<?php
try {
function foo() {
foo();}
foo();
} catch (\Throwable $_ffl_e) {}

Resulted in this output:

AddressSanitizer:DEADLYSIGNAL
=================================================================
==2178226==ERROR: AddressSanitizer: SEGV on unknown address (pc 0x000005a47add bp 0x7ffecbe6d400 sp 0x7ffecbe6d1f0 T0)
==2178226==The signal is caused by a READ memory access.
==2178226==Hint: this fault was caused by a dereference of a high value address (see register values below).  Disassemble the provided pc to learn which register was used.
    #0 0x5a47add in zend_get_executed_lineno /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_execute_API.c:705:22
    #1 0x66e51f6 in get_filename_lineno /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend.c:1666:15
    #2 0x66e6245 in zend_error_noreturn /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend.c:1745:2
    #3 0x56d4e9e in zend_mm_safe_error /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_alloc.c:406:3
    #4 0x56d2984 in zend_mm_alloc_pages /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_alloc.c:1042:7
    #5 0x56d75ce in zend_mm_alloc_large_ex /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_alloc.c:1120:14
    #6 0x56cec7a in zend_mm_alloc_large /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_alloc.c:1137:9
    #7 0x56bcde9 in zend_mm_alloc_heap /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_alloc.c:1496:9
    #8 0x56c27b2 in _emalloc /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_alloc.c:2781:9
    #9 0x5a70f01 in zend_vm_stack_new_page /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_execute.h:328:38
    #10 0x5a7260d in zend_vm_stack_extend /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_execute.c:227:25
    #11 0x5a836fc in zend_vm_stack_push_call_frame_ex /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_execute.h:352:30
    #12 0x6097c0e in ZEND_INIT_FCALL_OFFSET_SPEC_CONST_HANDLER /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_vm_execute.h:4218:9
LLVMSymbolizer: error reading file: No such file or directory
    #13 0x49894c02  (/dev/zero (deleted)+0x8000c02)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/Zend/zend_execute_API.c:705:22 in zend_get_executed_lineno
==2178226==ABORTING

To reproduce:

/home/fuzz/WorkSpace/fusion-fuzz/projects/php/php-src/sapi/cli/php  -d opcache.enable_cli=1 -d opcache.jit=1254 ./test.php

Commit:

55c4eb2a1b859c04c1eab8b17b15825e656e5a83

Configurations:

CC="clang-12" CXX="clang++-12" CFLAGS="-DZEND_VERIFY_TYPE_INFERENCE" CXXFLAGS="-DZEND_VERIFY_TYPE_INFERENCE" ./configure --enable-debug --enable-address-sanitizer --enable-undefined-sanitizer --enable-re2c-cgoto --enable-fpm --enable-litespeed --enable-phpdbg-debug --enable-zts --enable-bcmath --enable-calendar --enable-dba --enable-dl-test --enable-exif --enable-ftp --enable-gd --enable-gd-jis-conv --enable-mbstring --enable-pcntl --enable-shmop --enable-soap --enable-sockets --enable-sysvmsg --enable-zend-test --with-zlib --with-bz2 --with-curl --with-enchant --with-gettext --with-gmp --with-mhash --with-ldap --with-libedit --with-readline --with-snmp --with-sodium --with-xsl --with-zip --with-mysqli --with-pdo-mysql --with-pdo-pgsql --with-pgsql --with-sqlite3 --with-pdo-sqlite --with-webp --with-jpeg --with-freetype --enable-sigchild --with-readline --with-pcre-jit --with-iconv

Operating System:

Ubuntu 20.04 Host, Docker 0599jiangyc/flowfusion:latest

This bug was found by fusion-fuzz