bug#27731: 25.2; Emacs always crash when C-x C-s over tramp

bug#27731: 25.2; Emacs always crash when C-x C-s over tramp

[Yu Zhao 赵宇]

Everytime when I press C-x C-s to save-file over tramp(I am certain
about this), my Emacs crashes.

Or may be it crashes sometimes I save-file locally(not sure about this)?

I tramp to a remote centos server over ssh, it always works very well before that.

I tried to tramp using Emacs -Q and it works(not crash) one time.

I've just upgraded my mac to 10.12 and my Emacs to 25.2 from 25.1,
so I am not sure whether the mac version or the emacs version is the
actual cause of the crash.



In GNU Emacs 25.2.1 (x86_64-apple-darwin16.6.0, NS appkit-1504.83 Version 10.12.5 (Build 16F73))
 of 2017-07-15 built on localhost
Windowing system distributor 'Apple', version 10.3.1504
Configured using:
 'configure --disable-dependency-tracking --disable-silent-rules
 --enable-locallisppath=/usr/local/share/emacs/site-lisp
 --infodir=/usr/local/Cellar/emacs/25.2/share/info/emacs
 --prefix=/usr/local/Cellar/emacs/25.2 --without-x --with-xml2
 --with-dbus --with-gnutls --with-imagemagick --with-modules --with-rsvg
 --without-pop --with-ns --disable-ns-self-contained'

Configured features:
JPEG RSVG IMAGEMAGICK DBUS NOTIFY ACL GNUTLS LIBXML2 ZLIB
TOOLKIT_SCROLL_BARS NS MODULES

Important settings:
  value of $LANG: zh_CN.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  rainbow-delimiters-mode: t
  aggressive-indent-mode: t
  elisp-slime-nav-mode: t
  linum-mode: t
  hes-mode: t
  keyfreq-autosave-mode: t
  keyfreq-mode: t
  editorconfig-mode: t
  global-smartscan-mode: t
  smartscan-mode: t
  global-whitespace-cleanup-mode: t
  whitespace-cleanup-mode: t
  fic-mode: t
  eval-sexp-fu-flash-mode: t
  paredit-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  helm-descbinds-mode: t
  helm-mode: t
  async-bytecomp-package-mode: t
  guide-key-mode: t
  global-subword-mode: t
  subword-mode: t
  winner-mode: t
  savehist-mode: t
  shell-dirtrack-mode: t
  recentf-mode: t
  global-auto-revert-mode: t
  save-place-mode: t
  show-paren-mode: t
  global-hl-line-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  encourage-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  global-visual-line-mode: t
  visual-line-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent messages:
Loading /Users/yuzhao/.emacs.d/.mc-lists.el (source)...done
.emacs.d/elpa/eval-sexp-fu/eval-sexp-fu.el: ‘labels’ is an obsolete macro (as of 24.3); use ‘cl-labels’ instead.
.emacs.d/elpa/eval-sexp-fu/eval-sexp-fu.el: ‘flet’ is an obsolete macro (as of 24.3); use either ‘cl-flet’ or ‘cl-letf’. [2 times]
ad-handle-definition: ‘er/expand-region’ got redefined
.emacs.d/elpa/smart-forward-20140430.13/smart-forward.el: ‘flet’ is an obsolete macro (as of 24.3); use either ‘cl-flet’ or ‘cl-letf’. [4 times]
Loading /Users/yuzhao/.emacs.d/site-lisp/chinese-wubi-single-rules.el (source)...done
.emacs.d/site-lisp/reddit.el: ‘labels’ is an obsolete macro (as of 24.3); use ‘cl-labels’ instead.
Loading font-lock...done
For information about GNU Emacs and the GNU system, type C-h C-a.
.emacs.d/elpa/helm-20160929.1313/helm-elisp.el: ‘dont-compile’ is an obsolete macro (as of 24.4).

Load-path shadows:
/Users/yuzhao/.emacs.d/site-lisp/el-get-install hides /Users/yuzhao/.emacs.d/elpa/el-get-20161022.614/el-get-install
/Users/yuzhao/.emacs.d/site-lisp/jump/inflections hides /Users/yuzhao/.emacs.d/elpa/inflections-20161126.1727/inflections
/Users/yuzhao/.emacs.d/site-lisp/auto-complete-config hides /Users/yuzhao/.emacs.d/elpa/auto-complete-20160827.649/auto-complete-config
/Users/yuzhao/.emacs.d/site-lisp/move-text hides /Users/yuzhao/.emacs.d/elpa/move-text-20160930.1907/move-text
/Users/yuzhao/.emacs.d/site-lisp/highlight hides /Users/yuzhao/.emacs.d/elpa/highlight-20160617.617/highlight
/Users/yuzhao/.emacs.d/site-lisp/popup/popup hides /Users/yuzhao/.emacs.d/elpa/popup-20160709.729/popup
/Users/yuzhao/.emacs.d/site-lisp/markdown-mode hides /Users/yuzhao/.emacs.d/elpa/markdown-mode-20160928.932/markdown-mode
/Users/yuzhao/.emacs.d/site-lisp/spinner/spinner hides /Users/yuzhao/.emacs.d/elpa/spinner-1.7.1/spinner
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-xact hides /usr/local/share/emacs/site-lisp/ledger/ledger-xact
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-texi hides /usr/local/share/emacs/site-lisp/ledger/ledger-texi
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-test hides /usr/local/share/emacs/site-lisp/ledger/ledger-test
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-state hides /usr/local/share/emacs/site-lisp/ledger/ledger-state
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-sort hides /usr/local/share/emacs/site-lisp/ledger/ledger-sort
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-schedule hides /usr/local/share/emacs/site-lisp/ledger/ledger-schedule
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-report hides /usr/local/share/emacs/site-lisp/ledger/ledger-report
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-regex hides /usr/local/share/emacs/site-lisp/ledger/ledger-regex
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-reconcile hides /usr/local/share/emacs/site-lisp/ledger/ledger-reconcile
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-post hides /usr/local/share/emacs/site-lisp/ledger/ledger-post
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-occur hides /usr/local/share/emacs/site-lisp/ledger/ledger-occur
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-navigate hides /usr/local/share/emacs/site-lisp/ledger/ledger-navigate
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-mode hides /usr/local/share/emacs/site-lisp/ledger/ledger-mode
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-init hides /usr/local/share/emacs/site-lisp/ledger/ledger-init
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-fonts hides /usr/local/share/emacs/site-lisp/ledger/ledger-fonts
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-fontify hides /usr/local/share/emacs/site-lisp/ledger/ledger-fontify
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-exec hides /usr/local/share/emacs/site-lisp/ledger/ledger-exec
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-context hides /usr/local/share/emacs/site-lisp/ledger/ledger-context
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-complete hides /usr/local/share/emacs/site-lisp/ledger/ledger-complete
/Users/yuzhao/.emacs.d/elpa/ledger-mode-20160716.1259/ledger-commodities hides /usr/local/share/emacs/site-lisp/ledger/ledger-commodities

Features:
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blog-admin-backend-nikola blog-admin-backend-org-page
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Memory information:
((conses 16 763817 117361)
 (symbols 48 61650 0)
 (miscs 40 839 3317)
 (strings 32 163418 129873)
 (string-bytes 1 4889256)
 (vectors 16 84366)
 (vector-slots 8 1285395 30962)
 (floats 8 1301 455)
 (intervals 56 1313 77)
 (buffers 976 696))

bug#27731: forward to bug #27731

[Yu Zhao]

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I changed to https://emacsformacosx.com/emacs-builds/Emacs-25.2-universal.dmg <https://emacsformacosx.com/emacs-builds/Emacs-25.2-universal.dmg> and it will not crash when I tramp and save-file.

I doubt that is because one of the "--with-???" options I used in the brew install emacs, which is different from the prebuilt version of emacsformacosx.com.

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bug#27731: 25.2; Emacs always crash when C-x C-s over tramp

[Eli Zaretskii]

> From: yu.zhao@joudou.com (Yu Zhao 赵宇)
> Date: Mon, 17 Jul 2017 12:26:31 +0800
> 
> Everytime when I press C-x C-s to save-file over tramp(I am certain
> about this), my Emacs crashes.

Please start Emacs under a debugger (preferably GDB), and when it
crashes, produce a C-level backtrace and post it here.

Thanks.

bug#27731: 25.2; Emacs always crash when C-x C-s over tramp

[Eli Zaretskii]

[Please use Reply-all, so that a copy of the message goes to the bug
tracker.]

> From: Yu Zhao <yu.zhao@joudou.com>
> Date: Tue, 18 Jul 2017 12:04:08 +0800
> 
> Do I need to follow the instructions in the DEBUG file, and recompile emacs with CFLAGS="-O0 -g3" and
> download a copy of the source code of GNU Emacs and start gdb in the path of .gdbinit?

For starters, it's enough to run the Emacs binary that you have under
GDB without rebuilding.

Thanks.

bug#27731: forward to bug #27731

[Michael Albinus]

Yu Zhao <yu.zhao@joudou.com> writes:

> I changed to
> https://emacsformacosx.com/emacs-builds/Emacs-25.2-universal.dmg and
> it will not crash when I tramp and save-file.

I'm closing this bug, since there are no more evidences for months. Feel
free to reopen if there's something new.

Best regards, Michael.