Emacs froze again. This time, I remember what I did. 1. Start Emacs 2. M-x customize-group // helm pops up after M-x and auto-completes the customize-group command 3. Type magit // I may have mistyped, then typed again Expected result: helm updates matches Actual result: Emacs freezes I see do_auto_save in both traces. Might that have anything to do with it? (lldb) bt all * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x509920990) * frame #0: 0x000000010014466f Emacs-x86_64-10_9`hash_lookup + 95 frame #1: 0x0000000100017c5a Emacs-x86_64-10_9`maybe_set_redisplay + 74 frame #2: 0x00000001001236c6 Emacs-x86_64-10_9`set_internal + 150 frame #3: 0x00000001000be7c5 Emacs-x86_64-10_9`safe_run_hooks + 69 frame #4: 0x00000001000f4afe Emacs-x86_64-10_9`Fdo_auto_save + 222 frame #5: 0x00000001000ba02e Emacs-x86_64-10_9`shut_down_emacs + 222 frame #6: 0x00000001000b9e55 Emacs-x86_64-10_9`terminate_due_to_signal + 85 frame #7: 0x00000001000d7ff6 Emacs-x86_64-10_9`deliver_fatal_thread_signal + 134 frame #8: 0x00000001000d8d46 Emacs-x86_64-10_9`handle_sigsegv + 150 frame #9: 0x00007fff96afeb3a libsystem_platform.dylib`_sigtramp + 26 frame #10: 0x0000000100120a75 Emacs-x86_64-10_9`sweep_vectors + 165 frame #11: 0x000000010011d123 Emacs-x86_64-10_9`Fgarbage_collect + 3155 frame #12: 0x0000000100175520 Emacs-x86_64-10_9`exec_byte_code + 2560 frame #13: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #14: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #15: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #16: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #17: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #18: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #19: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #20: 0x00000001001345ca Emacs-x86_64-10_9`Ffuncall_interactively + 58 frame #21: 0x000000010013a427 Emacs-x86_64-10_9`Ffuncall + 791 frame #22: 0x0000000100135c3b Emacs-x86_64-10_9`Fcall_interactively + 5723 frame #23: 0x000000010013a53b Emacs-x86_64-10_9`Ffuncall + 1067 frame #24: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #25: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #26: 0x000000010013abbd Emacs-x86_64-10_9`call1 + 45 frame #27: 0x00000001000bda7a Emacs-x86_64-10_9`command_loop_1 + 1962 frame #28: 0x0000000100138f86 Emacs-x86_64-10_9`internal_condition_case + 70 frame #29: 0x00000001000ce370 Emacs-x86_64-10_9`command_loop_2 + 48 frame #30: 0x0000000100138ae6 Emacs-x86_64-10_9`internal_catch + 54 frame #31: 0x00000001000bc9c8 Emacs-x86_64-10_9`command_loop + 200 frame #32: 0x00000001000bc8b5 Emacs-x86_64-10_9`recursive_edit_1 + 117 frame #33: 0x00000001000ea5ee Emacs-x86_64-10_9`read_minibuf + 2062 frame #34: 0x00000001000e9db5 Emacs-x86_64-10_9`Fread_from_minibuffer + 229 frame #35: 0x000000010013a60b Emacs-x86_64-10_9`Ffuncall + 1275 frame #36: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #37: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #38: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #39: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #40: 0x0000000100139fdd Emacs-x86_64-10_9`Fapply + 557 frame #41: 0x000000010013a427 Emacs-x86_64-10_9`Ffuncall + 791 frame #42: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #43: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #44: 0x0000000100139fdd Emacs-x86_64-10_9`Fapply + 557 frame #45: 0x000000010013a427 Emacs-x86_64-10_9`Ffuncall + 791 frame #46: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #47: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #48: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #49: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #50: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #51: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #52: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #53: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #54: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #55: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #56: 0x0000000100139fdd Emacs-x86_64-10_9`Fapply + 557 frame #57: 0x000000010013a427 Emacs-x86_64-10_9`Ffuncall + 791 frame #58: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #59: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #60: 0x00000001000ead79 Emacs-x86_64-10_9`Fcompleting_read + 137 frame #61: 0x000000010013a60b Emacs-x86_64-10_9`Ffuncall + 1275 frame #62: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #63: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #64: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #65: 0x00000001001372d9 Emacs-x86_64-10_9`eval_sub + 1881 frame #66: 0x0000000100139b78 Emacs-x86_64-10_9`Feval + 88 frame #67: 0x00000001001347c8 Emacs-x86_64-10_9`Fcall_interactively + 488 frame #68: 0x000000010013a53b Emacs-x86_64-10_9`Ffuncall + 1067 frame #69: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #70: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #71: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #72: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #73: 0x00000001001345ca Emacs-x86_64-10_9`Ffuncall_interactively + 58 frame #74: 0x000000010013a427 Emacs-x86_64-10_9`Ffuncall + 791 frame #75: 0x0000000100139fdd Emacs-x86_64-10_9`Fapply + 557 frame #76: 0x0000000100134dda Emacs-x86_64-10_9`Fcall_interactively + 2042 frame #77: 0x000000010013a53b Emacs-x86_64-10_9`Ffuncall + 1067 frame #78: 0x0000000100175405 Emacs-x86_64-10_9`exec_byte_code + 2277 frame #79: 0x000000010013a38f Emacs-x86_64-10_9`Ffuncall + 639 frame #80: 0x000000010013abbd Emacs-x86_64-10_9`call1 + 45 frame #81: 0x00000001000bda7a Emacs-x86_64-10_9`command_loop_1 + 1962 frame #82: 0x0000000100138f86 Emacs-x86_64-10_9`internal_condition_case + 70 frame #83: 0x00000001000ce370 Emacs-x86_64-10_9`command_loop_2 + 48 frame #84: 0x0000000100138ae6 Emacs-x86_64-10_9`internal_catch + 54 frame #85: 0x00000001000bc99e Emacs-x86_64-10_9`command_loop + 158 frame #86: 0x00000001000bc8b5 Emacs-x86_64-10_9`recursive_edit_1 + 117 frame #87: 0x00000001000bcadc Emacs-x86_64-10_9`Frecursive_edit + 220 frame #88: 0x00000001000bb7b3 Emacs-x86_64-10_9`main + 5875 frame #89: 0x00007fff968ef235 libdyld.dylib`start + 1 frame #90: 0x00007fff968ef235 libdyld.dylib`start + 1 thread #2 frame #0: 0x00007fff96a1deb6 libsystem_kernel.dylib`__select + 10 frame #1: 0x00000001001ad4e8 Emacs-x86_64-10_9`-[EmacsApp fd_handler:] + 264 frame #2: 0x00007fff82b928ad Foundation`__NSThread__start__ + 1243 frame #3: 0x00007fff96b0893b libsystem_pthread.dylib`_pthread_body + 180 frame #4: 0x00007fff96b08887 libsystem_pthread.dylib`_pthread_start + 286 frame #5: 0x00007fff96b0808d libsystem_pthread.dylib`thread_start + 13 thread #3, name = 'com.apple.NSEventThread' frame #0: 0x00007fff96a1634a libsystem_kernel.dylib`mach_msg_trap + 10 frame #1: 0x00007fff96a15797 libsystem_kernel.dylib`mach_msg + 55 frame #2: 0x00007fff81170434 CoreFoundation`__CFRunLoopServiceMachPort + 212 frame #3: 0x00007fff8116f8c1 CoreFoundation`__CFRunLoopRun + 1361 frame #4: 0x00007fff8116f114 CoreFoundation`CFRunLoopRunSpecific + 420 frame #5: 0x00007fff7edb5f02 AppKit`_NSEventThread + 205 frame #6: 0x00007fff96b0893b libsystem_pthread.dylib`_pthread_body + 180 frame #7: 0x00007fff96b08887 libsystem_pthread.dylib`_pthread_start + 286 frame #8: 0x00007fff96b0808d libsystem_pthread.dylib`thread_start + 13 thread #4 frame #0: 0x00007fff96a1e44e libsystem_kernel.dylib`__workq_kernreturn + 10 frame #1: 0x00007fff96b08621 libsystem_pthread.dylib`_pthread_wqthread + 1426 frame #2: 0x00007fff96b0807d libsystem_pthread.dylib`start_wqthread + 13