Bug #20295: Segmentation fault when parsing `/invalid_regexp/ =~ s` - Ruby master - Ruby Issue Tracking System

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Bug #20295

closed

Segmentation fault when parsing `/invalid_regexp/ =~ s`

Added by tompng (tomoya ishida) 2 months ago. Updated 2 months ago.

Status:

Closed

Assignee:

Target version:

ruby -v:

ruby 3.4.0dev (2024-02-20T23:06:48Z master e7ab5d891c) +YJIT +MN [arm64-darwin22]

Backport:

3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN

[ruby-core:116913]

Description

These should be Syntax Error, but segfaults

./ruby -ce "/[/=~s"
./ruby -ce "/(?<>)/=~s"
./ruby -ce "/(?<a>[)/=~s"

 ./ruby -ce "/[/=~s"
-e:1: premature end of char-class: /[/
./ruby: [BUG] Segmentation fault at 0x0000000000000014
ruby 3.4.0dev (2024-02-20T23:06:48Z master e7ab5d891c) +YJIT +MN [arm64-darwin22]

-- Crash Report log information --------------------------------------------
   See Crash Report log file in one of the following locations:             
     * ~/Library/Logs/DiagnosticReports                                     
     * /Library/Logs/DiagnosticReports                                      
   for more details.                                                        
Don't forget to include the above Crash Report log file in bug reports.     

-- Control frame information -----------------------------------------------
c:0001 p:0000 s:0003 E:001960 DUMMY  [FINISH]


-- Threading information ---------------------------------------------------
Total ractor count: 1
Ruby thread count for this ractor: 1

-- Machine register context ------------------------------------------------
  x0: 0x0000000000000000  x1: 0x0000000000000039  x2: 0x0000000000000038
  x3: 0x0000000000000008  x4: 0x0000000000000001  x5: 0x0000000000000001
  x6: 0x0000000100a3ce00  x7: 0x0000000000000000 x18: 0x0000000000000000
 x19: 0x0000000000000001 x20: 0x000000012482f6b0 x21: 0x0000000123a08ab0
 x22: 0x000000016fb5d0d0 x23: 0x000000012482f6e0 x24: 0x000000012482f708
 x25: 0x0000000000000004 x26: 0x00000001006259b5 x27: 0x000000016fb5de30
 x28: 0x000000016fb5e450  lr: 0x00000001003e47ac  fp: 0x000000016fb5cf60
  sp: 0x000000016fb5cef0

-- C level backtrace information -------------------------------------------
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(rb_vm_bugreport+0xb4c) [0x1004ff4cc] ../vm_dump.c:1151
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(rb_vm_bugreport) (null):0
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(rb_bug_for_fatal_signal+0x100) [0x10033e0dc] ../error.c:1065
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(sig_do_nothing+0x0) [0x100465bc4] ../signal.c:926
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(sigsegv) (null):0
/usr/lib/system/libsystem_platform.dylib(_sigtramp+0x38) [0x1a8b6aa84]
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(reg_named_capture_assign+0xc) [0x1003e47ac] parse.y:15909
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(match_op) parse.y:13082
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(ruby_yyparse+0x2c30) [0x1003dcb08] parse.y:4010
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(yycompile0+0x238) [0x1003ede94] parse.y:7653
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(rb_suppress_tracing+0xcc) [0x100500c7c] ../vm_trace.c:487
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(yycompile+0x5c) [0x1003e9ff8] parse.y:7709
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(parser_compile_string) parse.y:7772
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(rb_ruby_parser_compile_string_path) parse.y:7779
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(rb_ruby_parser_compile_string+0x1c) [0x1003ec1b4] parse.y:7785
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(rb_parser_compile_string) parse.y:16260
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(process_script+0x84) [0x10045beb0] ../ruby.c:2066
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(process_options) ../ruby.c:2416
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(ruby_process_options) ../ruby.c:3043
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(ruby_options+0xa0) [0x10034835c] ../eval.c:118
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(rb_main+0x18) [0x1002a26cc] ../main.c:40
/Users/tomoya.ishida/github/ruby/ruby/build/ruby(main) ../main.c:59

-- Other runtime information -----------------------------------------------

* Loaded script: ./ruby

* Loaded features:

    0 enumerator.so
    1 thread.rb
    2 fiber.so
    3 rational.so
    4 complex.so
    5 ruby2_keywords.rb

* Process memory map:

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[IMPORTANT]
Don't forget to include the Crash Report log file under
DiagnosticReports directory in bug reports.