$ gdb /usr/local/sbin/php-fpm /tmp/core-php-fpm.46 GNU gdb (Debian 13.1-3) 13.1 Copyright (C) 2023 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "aarch64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/local/sbin/php-fpm... (No debugging symbols found in /usr/local/sbin/php-fpm) warning: Can't open file /dev/zero (deleted) during file-backed mapping note processing [New LWP 46] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1". Core was generated by `php-fpm:'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x0000ffff9f0ae104 in zend_string_equal_content (s2=0xffff007d31392d39, s1=0xffff9ee030c0) at /usr/local/include/php/Zend/zend_string.h:357 357 return ZSTR_LEN(s1) == ZSTR_LEN(s2) && zend_string_equal_val(s1, s2); (gdb) bt #0 0x0000ffff9f0ae104 in zend_string_equal_content (s2=0xffff007d31392d39, s1=0xffff9ee030c0) at /usr/local/include/php/Zend/zend_string.h:357 #1 zend_string_equals (s2=0xffff007d31392d39, s1=0xffff9ee030c0) at /usr/local/include/php/Zend/zend_string.h:362 #2 mark_fse_as_having_line_breakpoints (fse=0xaaab1be5de40) at /tmp/pear/temp/xdebug/src/debugger/debugger.c:573 #3 handle_breakpoints (return_value=0xffff9ee1c5c0, breakpoint_type=8, fse=0xaaab1be5de40) at /tmp/pear/temp/xdebug/src/debugger/debugger.c:591 #4 xdebug_debugger_handle_breakpoints (fse=fse@entry=0xaaab1be5de40, breakpoint_type=breakpoint_type@entry=8, return_value=return_value@entry=0xffff9ee1c5c0) at /tmp/pear/temp/xdebug/src/debugger/debugger.c:623 #5 0x0000ffff9f0979e4 in xdebug_execute_internal_end (current_execute_data=, return_value=0xffff9ee1c5c0) at /tmp/pear/temp/xdebug/src/base/base.c:998 #6 xdebug_execute_internal (current_execute_data=, return_value=0xffff9ee1c5c0) at /tmp/pear/temp/xdebug/src/base/base.c:1022 #7 0x0000aaaae44ac1b8 in ?? () #8 0x0000aaaae4819838 in execute_ex () #9 0x0000aaaae44ac124 in ?? () #10 0x0000aaaae4819838 in execute_ex () #11 0x0000aaaae44ac124 in ?? () #12 0x0000aaaae4819838 in execute_ex () #13 0x0000aaaae44ac124 in ?? () #14 0x0000aaaae4819838 in execute_ex () #15 0x0000aaaae44ac124 in ?? () #16 0x0000aaaae4819838 in execute_ex () #17 0x0000aaaae44ac124 in ?? () #18 0x0000aaaae4819838 in execute_ex () #19 0x0000aaaae44ac124 in ?? () #20 0x0000aaaae4819838 in execute_ex () #21 0x0000aaaae44ac124 in ?? () #22 0x0000aaaae4819838 in execute_ex () #23 0x0000aaaae44ac124 in ?? () #24 0x0000aaaae4819838 in execute_ex () #25 0x0000aaaae44ac124 in ?? () #26 0x0000aaaae4819838 in execute_ex () #27 0x0000aaaae44ac124 in ?? () #28 0x0000aaaae4819838 in execute_ex () #29 0x0000aaaae44ac124 in ?? () #30 0x0000aaaae4819838 in execute_ex () --Type for more, q to quit, c to continue without paging--c #31 0x0000aaaae44ac124 in ?? () #32 0x0000aaaae4819838 in execute_ex () #33 0x0000aaaae44ac124 in ?? () #34 0x0000aaaae4819838 in execute_ex () #35 0x0000aaaae44ac124 in ?? () #36 0x0000aaaae4819838 in execute_ex () #37 0x0000aaaae44ac124 in ?? () #38 0x0000aaaae4819838 in execute_ex () #39 0x0000aaaae44ac124 in ?? () #40 0x0000aaaae4819838 in execute_ex () #41 0x0000aaaae44ac124 in ?? () #42 0x0000aaaae4819838 in execute_ex () #43 0x0000aaaae44ac124 in ?? () #44 0x0000aaaae4819838 in execute_ex () #45 0x0000aaaae44ac124 in ?? () #46 0x0000aaaae4819838 in execute_ex () #47 0x0000aaaae44ac124 in ?? () #48 0x0000aaaae4819838 in execute_ex () #49 0x0000aaaae44ac124 in ?? () #50 0x0000aaaae4819838 in execute_ex () #51 0x0000aaaae44ac124 in ?? () #52 0x0000aaaae4819838 in execute_ex () #53 0x0000aaaae44ac124 in ?? () #54 0x0000aaaae4819838 in execute_ex () #55 0x0000aaaae44ac124 in ?? () #56 0x0000aaaae4819838 in execute_ex () #57 0x0000aaaae47e1190 in ?? () #58 0x0000aaaae480e498 in execute_ex () #59 0x0000aaaae4819a7c in zend_execute () #60 0x0000aaaae479a154 in zend_execute_scripts () #61 0x0000aaaae4735650 in php_execute_script () #62 0x0000aaaae44b5d3c in ?? () #63 0x0000ffffa21f7780 in __libc_start_call_main (main=main@entry=0xaaaae44b4f80, argc=argc@entry=1, argv=argv@entry=0xfffff7f46db8) at ../sysdeps/nptl/libc_start_call_main.h:58 #64 0x0000ffffa21f7858 in __libc_start_main_impl (main=0xaaaae44b4f80, argc=1, argv=0xfffff7f46db8, init=, fini=, rtld_fini=, stack_end=) at ../csu/libc-start.c:360 #65 0x0000aaaae44b68f0 in _start ()