Closed
Description
Godot version
4.1.1.stable, master [4714e95]
System information
Godot v4.2.dev (4714e95) - Arch Linux #1 ZEN SMP PREEMPT_DYNAMIC Tue, 08 Aug 2023 22:13:48 +0000 - Wayland - Vulkan (Forward+) - dedicated AMD Radeon RX 5700 (RADV NAVI10) () - AMD Ryzen 7 5800X3D 8-Core Processor (16 Threads)
Issue description
I attempted to read a large JSON file (1GB+) using FileAccess.get_file_as_string, but the result is a crash. Here's a backtrace from a debug build [4714e95] and some info, not sure what to make of this
Loading...
Thread 1 "godot.linuxbsd." received signal SIGSEGV, Segmentation fault.
String::parse_utf8 (this=0x7fffffffa5f8,
p_utf8=0x7fff2ffff020 "[{\"p\":[-0.019984539598226547,0.3165023624897003,0.6493667960166931],\"c\":[0.15294925029263085,0.1603185939029318,0.11855615533237046],\"s\":[-5.519049167633057,-5.86762809753418,-4.488621234893799],\"q\":["..., p_len=1093019370, p_skip_cr=false) at core/string/ustring.cpp:1880
1880 dst[str_size] = 0;
(gdb) bt
#0 String::parse_utf8 (this=0x7fffffffa5f8,
p_utf8=0x7fff2ffff020 "[{\"p\":[-0.019984539598226547,0.3165023624897003,0.6493667960166931],\"c\":[0.15294925029263085,0.1603185939029318,0.11855615533237046],\"s\":[-5.519049167633057,-5.86762809753418,-4.488621234893799],\"q\":["..., p_len=1093019370, p_skip_cr=false) at core/string/ustring.cpp:1880
#1 0x000055555cae1c27 in FileAccess::get_file_as_string (p_path=..., r_error=0x0) at core/io/file_access.cpp:770
#2 0x000055555cae631e in FileAccess::_get_file_as_string (p_path=...) at core/io/file_access.h:227
#3 0x000055555caf36ae in call_with_variant_args_static_ret<String, String const&, 0ul> (p_method=0x55555cae62e7 <FileAccess::_get_file_as_string(String const&)>, p_args=0x7fffffffa720, r_ret=..., r_error=...)
at ./core/variant/binder_common.h:766
#4 0x000055555caf0cbd in call_with_variant_args_static_ret_dv<String, String const&> (p_method=0x55555cae62e7 <FileAccess::_get_file_as_string(String const&)>, p_args=0x7fffffffa838, p_argcount=1, r_ret=..., r_error=...,
default_values=...) at ./core/variant/binder_common.h:989
#5 0x000055555caeec5a in MethodBindTRS<String, String const&>::call (this=0x5555616f8240, p_object=0x0, p_args=0x7fffffffa838, p_arg_count=1, r_error=...) at ./core/object/method_bind.h:719
#6 0x000055555870c3db in GDScriptFunction::call (this=0x555563c0aa10, p_instance=0x555563bfaba0, p_args=0x0, p_argcount=0, r_err=..., p_state=0x0) at modules/gdscript/gdscript_vm.cpp:1934
#7 0x000055555859a338 in GDScriptInstance::callp (this=0x555563bfaba0, p_method=..., p_args=0x0, p_argcount=0, r_error=...) at modules/gdscript/gdscript.cpp:1892
#8 0x000055555aaeec0c in Node::_gdvirtual__ready_call<false> (this=0x555563bf7930) at scene/main/node.h:322
#9 0x000055555aac7d65 in Node::_notification (this=0x555563bf7930, p_notification=13) at scene/main/node.cpp:186
#10 0x00005555582b77d4 in Node::_notificationv (this=0x555563bf7930, p_notification=13, p_reversed=false) at ./scene/main/node.h:49
#11 0x00005555582d7147 in Node3D::_notificationv (this=0x555563bf7930, p_notification=13, p_reversed=false) at ./scene/3d/node_3d.h:52
#12 0x000055555d092445 in Object::notification (this=0x555563bf7930, p_notification=13, p_reversed=false) at core/object/object.cpp:798
#13 0x000055555aac823e in Node::_propagate_ready (this=0x555563bf7930) at scene/main/node.cpp:230
#14 0x000055555aac81be in Node::_propagate_ready (this=0x555563b84780) at scene/main/node.cpp:221
#15 0x000055555aadae3e in Node::_set_tree (this=0x555563b84780, p_tree=0x555563b84280) at scene/main/node.cpp:2909
#16 0x000055555ab18704 in SceneTree::initialize (this=0x555563b84280) at scene/main/scene_tree.cpp:449
#17 0x0000555558035c2d in OS_LinuxBSD::run (this=0x7fffffffdbf0) at platform/linuxbsd/os_linuxbsd.cpp:900
#18 0x000055555802c274 in main (argc=3, argv=0x7fffffffe1b8) at platform/linuxbsd/godot_linuxbsd.cpp:74
(gdb) p dst
$1 = 0x7fff27ffe020 U""
(gdb) p str_size
$2 = 1093019370
(gdb) p dst[str_size]
Cannot access memory at address 0x80002c987bc8
(gdb) p _cowdata.size()
$3 = 1093019371
After some manual binary searching 0x7ffff7fff000 seems to pop up...
(gdb) p dst[872416247]
$35 = 0 U'\000'
(gdb) p dst[872416248]
Cannot access memory at address 0x7ffff7fff000
Steps to reproduce
extends Node3D
# Called when the node enters the scene tree for the first time.
func _ready():
print("Loading...")
var data = FileAccess.get_file_as_string("/path/to/out.json")
print("Loaded")
print(len(data))
# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
pass
In case the specific file is needed it's available here (warning: it's big)
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