Opened 11 years ago
Last modified 7 months ago
#41248 assigned defect
bash @4.2.45_2 - Segmentation Fault when executing undefined command — at Initial Version
| Reported by: | onitsuka42@… | Owned by: | macports-tickets@… |
|---|---|---|---|
| Priority: | Normal | Milestone: | |
| Component: | ports | Version: | 2.2.1 |
| Keywords: | Cc: | ||
| Port: | bash |
Description
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