[Bug python/31296] New: [gdb/python, s390/m31] FAIL: gdb.python/py-disasm.exp: global_disassembler=GlobalPreInfoDisassembler: disassemble test (GDB internal error, virtual memory exhausted: can't allocate 2143909120 bytes)

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=31296

            Bug ID: 31296
           Summary: [gdb/python, s390/m31] FAIL: gdb.python/py-disasm.exp:
                    global_disassembler=GlobalPreInfoDisassembler:
                    disassemble test (GDB internal error, virtual memory
                    exhausted: can't allocate 2143909120 bytes)
           Product: gdb
           Version: 13.1
            Status: NEW
          Severity: normal
          Priority: P2
         Component: python
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

Created attachment 15333
  --> https://sourceware.org/bugzilla/attachment.cgi?id=15333&action=edit
gdb.log

With a gdb-13.2 based package, on s390/m31 I run into:
...
(gdb) PASS: gdb.python/py-disasm.exp:
global_disassembler=GlobalPreInfoDisassembler: python
add_global_disassembler(GlobalPreInfoDisassembler)
disassemble test
Dump of assembler code for function test:
   0x00400538 <+0>:     st      %r11,44(%r15)
   0x0040053c <+4>:     lr      %r11,%r15
   0x0040053e <+6>:     nop     0
=> 0x00400542 <+10>:    ../../gdb/utils.c:718: internal-error: virtual memory
exhausted: can't allocate 2143909120 bytes.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
----- Backtrace -----
FAIL: gdb.python/py-disasm.exp: global_disassembler=GlobalPreInfoDisassembler:
disassemble test (GDB internal error)
Resyncing due to internal error.
0x4ffc53 gdb_internal_backtrace_1
        ../../gdb/bt-utils.c:122
0x4ffc53 _Z22gdb_internal_backtracev
        ../../gdb/bt-utils.c:168
0x91e7c9 internal_vproblem
        ../../gdb/utils.c:396
0x91eb17 _Z15internal_verrorPKciS0_P13__va_list_tag
        ../../gdb/utils.c:476
0xb0471d _Z18internal_error_locPKciS0_z
        ../../gdbsupport/errors.cc:58
0x91aec5 _Z14malloc_failurel
        ../../gdb/utils.c:718
0x4741c5 xmalloc
        ../../gdb/alloc.c:59
0x79adf1 disasmpy_info_read_memory
        ../../gdb/python/py-disasm.c:449
0x7cf6d7b5 ???
0x7cfaaa07 ???
0x7cfaaac1 ???
0x7cede329 ???
0x79b7ef gdb_PyObject_CallMethod<unsigned int, long long int>
        ../../gdb/python/python-internal.h:150
0x79b7ef _ZN18gdbpy_disassembler16read_memory_funcEyPhjP16disassemble_info
        ../../gdb/python/py-disasm.c:539
0x96dcb1 print_insn_s390
        ../../opcodes/s390-dis.c:337
0x79b257 disasmpy_builtin_disassemble
        ../../gdb/python/py-disasm.c:333
0x7cf92f1f ???
0x7cf92dfd ???
0x7cf983e9 ???
0x7cf71cd1 ???
0x7cf6d7b5 ???
0x7cf6ed39 ???
0x7cf6d7b5 ???
0x7cf05e55 ???
0x7cf6d7b5 ???
0x7cf92cc1 ???
0x7cf983e9 ???
0x7cf71cd1 ???
0x7cf6d7b5 ???
0x7cf6d9d1 ???
0x79bd6d _Z16gdbpy_print_insnP7gdbarchyP16disassemble_info
        ../../gdb/python/py-disasm.c:799
0x61386f _Z19ext_lang_print_insnP7gdbarchyP16disassemble_info
        ../../gdb/extension.c:940
0x588835 gdb_print_insn_1
        ../../gdb/disasm.c:1078
0x5895c1 _ZN16gdb_disassembler10print_insnEyPi
        ../../gdb/disasm.c:1101
0x589b59
_ZN29gdb_pretty_print_disassembler17pretty_print_insnEPK11disasm_insn10enum_flagsI20gdb_disassembly_flagE
        ../../gdb/disasm.c:445
0x58a203 dump_insns
        ../../gdb/disasm.c:542
0x58ab4b do_assembly_only
        ../../gdb/disasm.c:942
0x58ab4b
_Z15gdb_disassemblyP7gdbarchP6ui_out10enum_flagsI20gdb_disassembly_flagEiyy
        ../../gdb/disasm.c:1184
0x52a625 print_disassembly
        ../../gdb/cli/cli-cmds.c:1455
0x52f259 disassemble_command
        ../../gdb/cli/cli-cmds.c:1631
0x5326b9 _Z8cmd_funcP16cmd_list_elementPKci
        ../../gdb/cli/cli-decode.c:2543
0x8e5255 _Z15execute_commandPKci
        ../../gdb/top.c:690
0x60e117 _Z15command_handlerPKc
        ../../gdb/event-top.c:628
0x60f0d7 _Z20command_line_handlerOSt10unique_ptrIcN3gdb13xfree_deleterIcEEE
        ../../gdb/event-top.c:864
0x60d567 gdb_rl_callback_handler
        ../../gdb/event-top.c:256
0x961f5f rl_callback_read_char
        ../../../readline/readline/callback.c:290
0x60d797 gdb_rl_callback_read_char_wrapper_noexcept
        ../../gdb/event-top.c:192
0x60d989 gdb_rl_callback_read_char_wrapper
        ../../gdb/event-top.c:231
0x60d3c1 stdin_event_handler
        ../../gdb/event-top.c:553
0xb04fb9 gdb_wait_for_event
        ../../gdbsupport/event-loop.cc:694
0xb057e9 _Z16gdb_do_one_eventi
        ../../gdbsupport/event-loop.cc:264
0x6fbaab start_event_loop
        ../../gdb/main.c:411
0x6fbaab captured_command_loop
        ../../gdb/main.c:471
0x6fd223 captured_main
        ../../gdb/main.c:1330
0x6fd223 _Z8gdb_mainP18captured_main_args
        ../../gdb/main.c:1345
0x41cc1b main
        ../../gdb/gdb.c:32
...

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