[MacPorts] #41248: bash @4.2.45_2 - Segmentation Fault when executing undefined command

[MacPorts]

#41248: bash @4.2.45_2 - Segmentation Fault when executing undefined command
----------------------------------------+--------------------------------
 Reporter:  onitsuka42@…                |      Owner:  macports-tickets@…
     Type:  defect                      |     Status:  new
 Priority:  Normal                      |  Milestone:
Component:  ports                       |    Version:  2.2.1
 Keywords:  bash, segfault, lldb, core  |       Port:
----------------------------------------+--------------------------------
 When executing any undefined command in bash 4.2.45_2, I get a
 segmentation fault: 11

 $ echo "test"
 test
 $ dummy
 Segmentation fault: 11

 I generated a core dump for this segmentation fault, here are the details
 I extracted from it :

 $ lldb

 (lldb) target create -core core.7288
 error: core.7288 is a corrupt mach-o file: load command 72 LC_SEGMENT_64
 has a fileoff + filesize (0x1d602000) that extends beyond the end of the
 file (0x1d601000), the segment will be truncated
 error: core.7288 is a corrupt mach-o file: load command 73 LC_SEGMENT_64
 has a fileoff (0x1d602000) that extends beyond the end of the file
 (0x1d601000)
 Core file '/Users/romain/Desktop/tmp/core.7288' (x86_64) was loaded.
 Process 0 stopped
 * thread #1: tid = 0x0000, 0x00007fff9358d206
 libdispatch.dylib`_dispatch_wakeup + 100, stop reason = signal SIGSTOP
     frame #0: 0x00007fff9358d206 libdispatch.dylib`_dispatch_wakeup + 100
 libdispatch.dylib`_dispatch_wakeup + 100:
 -> 0x7fff9358d206:  movq   %rbx, 16(%rax)
    0x7fff9358d20a:  jmp    0x7fff9358d217            ; _dispatch_wakeup +
 117
    0x7fff9358d20c:  movq   %r14, %rdi
    0x7fff9358d20f:  movq   %rbx, %rsi

 (lldb) thread backtrace all
 * thread #1: tid = 0x0000, 0x00007fff9358d206
 libdispatch.dylib`_dispatch_wakeup + 100, stop reason = signal SIGSTOP
     frame #0: 0x00007fff9358d206 libdispatch.dylib`_dispatch_wakeup + 100
     frame #1: 0x00007fff9358d7a8
 libdispatch.dylib`_dispatch_queue_push_list_slow2 + 30
     frame #2: 0x00007fff93590145 libdispatch.dylib`_dispatch_mach_msg_send
 + 608
     frame #3: 0x00007fff9358fe99 libdispatch.dylib`dispatch_mach_send +
 136
     frame #4: 0x00007fff892d0864
 libxpc.dylib`_xpc_connection_send_message_with_reply_f + 125
     frame #5: 0x00007fff892d0724
 libxpc.dylib`xpc_connection_send_message_with_reply_sync + 180
     frame #6: 0x00007fff85fd6193 CoreFoundation`-[CFPrefsPlistSource
 copyReplyForDaemonMessage:toConnection:error:] + 243
     frame #7: 0x00007fff86130820 CoreFoundation`__47-[CFPrefsPlistSource
 alreadylocked_synchronize]_block_invoke_2 + 352
     frame #8: 0x00007fff85fd5a9b CoreFoundation`withDaemonConnection + 299
     frame #9: 0x00007fff85fd54fb CoreFoundation`-[CFPrefsPlistSource
 alreadylocked_synchronize] + 587
     frame #10: 0x00007fff85fd51f3 CoreFoundation`_copyValueForKey + 131
     frame #11: 0x00007fff85fd5147 CoreFoundation`-[CFPrefsPlistSource
 copyValueForKey:] + 71
     frame #12: 0x00007fff85fd4fa5 CoreFoundation`-[CFPrefsSearchListSource
 alreadylocked_copyValueForKey:] + 149
     frame #13: 0x00007fff85fd4edf CoreFoundation`-[CFPrefsSource
 copyValueForKey:] + 79
     frame #14: 0x00007fff85fd4e70
 CoreFoundation`__CFPreferencesCopyAppValue_block_invoke + 32
     frame #15: 0x00007fff85fcf04e CoreFoundation`+[CFPrefsSearchListSource
 withSearchListForIdentifier:perform:] + 846
     frame #16: 0x00007fff85fcecb8 CoreFoundation`CFPreferencesCopyAppValue
 + 168
     frame #17: 0x000000010eaa0598
 libintl.8.dylib`_nl_language_preferences_default + 70
     frame #18: 0x000000010ea9e9ea libintl.8.dylib`libintl_dcigettext + 894
     frame #19: 0x000000010e994f71 bash`execute_command_internal + 13351
     frame #20: 0x000000010e991af4 bash`execute_command + 92
     frame #21: 0x000000010e983993 bash`reader_loop + 519
     frame #22: 0x000000010e983052 bash`main + 5994
     frame #23: 0x00007fff8c5905fd libdyld.dylib`start + 1

 Once I exit lldb, the issue is solved and now undefined command execution
 doesn't segfault, but fails properly :

 $ dummy
 -bash: dummy : command not found

-- 
Ticket URL: <https://trac.macports.org/ticket/41248>
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