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bug#28472: 26.0.50; Deadlock in Fkill_emacs on MS-Windows


From: Richard Copley
Subject: bug#28472: 26.0.50; Deadlock in Fkill_emacs on MS-Windows
Date: Sat, 16 Sep 2017 11:31:21 +0100

Very occasionally, Emacs hangs on exit. For example, this happens

sometimes when bootstrapping Emacs (which involves starting emacs.exe

multiple times).

 

Here is a set of backtraces from attaching gdb to one of the stuck

processes:

 

Thread 3 (Thread 13168.0x19ec):

#0  0x00007ff80b6f8d61 in ntdll!DbgBreakPoint ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#1  0x00007ff80b72536b in ntdll!DbgUiRemoteBreakin ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#2  0x00007ff80ac72774 in KERNEL32!BaseThreadInitThunk ()

   from C:\WINDOWS\System32\kernel32.dll

#3  0x00007ff80b6c0d51 in ntdll!RtlUserThreadStart ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#4  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)

 

Thread 2 (Thread 13168.0x25a8):

#0  0x00007ff80b6f5424 in ntdll!ZwWaitForSingleObject ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#1  0x00007ff80b6986ee in ntdll!RtlGetNtProductType ()

  from C:\WINDOWS\SYSTEM32\ntdll.dll

#2  0x00007ff80b6720ce in ntdll!LdrShutdownThread ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#3  0x00007ff80b6c9bb9 in ntdll!LdrInitializeThunk ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#4  0x00007ff80b6c9b1b in ntdll!LdrInitializeThunk ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#5  0x00007ff80b6c9ace in ntdll!LdrInitializeThunk ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#6  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)

 

Thread 1 (Thread 13168.0x310):

#0  0x00007ff80b6f5424 in ntdll!ZwWaitForSingleObject ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#1  0x00007ff80b6986ee in ntdll!RtlGetNtProductType ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#2  0x00007ff80b69d26f in ntdll!RtlExitUserProcess ()

   from C:\WINDOWS\SYSTEM32\ntdll.dll

#3  0x00007ff80ac7c0da in KERNEL32!FatalExit ()

   from C:\WINDOWS\System32\kernel32.dll

#4  0x00007ff80adca045 in msvcrt!_exit () from C:\WINDOWS\System32\msvcrt.dll

#5  0x00007ff80adca68d in msvcrt!_initterm_e ()

   from C:\WINDOWS\System32\msvcrt.dll

#6  0x00000004000de21c in Fkill_emacs (arg=...) at emacs.c:2045

#7  0x000000040017a6d6 in funcall_subr (subr=0x400281110 <Skill_emacs>,

    address@hidden, address@hidden) at eval.c:2841

#8  0x0000000400178cf1 in Ffuncall (address@hidden,

    address@hidden) at eval.c:2766

#9  0x00000004001c6095 in exec_byte_code (bytestr=..., vector=...,

    maxdepth=..., args_template=..., address@hidden,

    nargs=<optimized out>, address@hidden, args=<optimized out>,

    address@hidden) at bytecode.c:629

#10 0x0000000400178503 in funcall_lambda (fun=..., address@hidden,

    address@hidden, address@hidden) at eval.c:2967

#11 0x0000000400178c20 in Ffuncall (address@hidden,

    address@hidden) at eval.c:2780

#12 0x00000004001c6095 in exec_byte_code (bytestr=..., vector=...,

    maxdepth=..., args_template=..., address@hidden,

    nargs=<optimized out>, address@hidden, args=<optimized out>,

    address@hidden) at bytecode.c:629

#13 0x0000000400178503 in funcall_lambda (fun=..., address@hidden,

    address@hidden, address@hidden) at eval.c:2967

#14 0x0000000400178c20 in Ffuncall (address@hidden,

    address@hidden) at eval.c:2780

#15 0x00000004001c6095 in exec_byte_code (bytestr=..., vector=...,

    maxdepth=..., args_template=..., address@hidden,

    nargs=<optimized out>, address@hidden, args=<optimized out>,

    address@hidden) at bytecode.c:629

#16 0x0000000400178503 in funcall_lambda (fun=..., address@hidden,

    address@hidden, address@hidden) at eval.c:2967

#17 0x0000000400178c20 in Ffuncall (address@hidden,

    address@hidden) at eval.c:2780

#18 0x00000004001c6095 in exec_byte_code (bytestr=..., vector=...,

    maxdepth=..., args_template=..., address@hidden,

    nargs=<optimized out>, address@hidden, args=<optimized out>,

    address@hidden) at bytecode.c:629

#19 0x0000000400178503 in funcall_lambda (fun=..., address@hidden,

    address@hidden, address@hidden) at eval.c:2967

#20 0x000000040017b7dc in apply_lambda (address@hidden, args=..., count=4,

    address@hidden) at eval.c:2903

#21 0x0000000400177aa3 in eval_sub (address@hidden) at eval.c:2306

#22 0x000000040017bc9f in Feval (form=..., lexical=...) at eval.c:2051

#23 0x00000004001768d6 in internal_condition_case (

    bfun=0x4005c0000 <tzbuf_format+752>,

    address@hidden <top_level_2>, handlers=..., address@hidden,

    hfun=0xf490, address@hidden <cmd_error>) at eval.c:1332

#24 0x00000004000de93d in top_level_1 (ignore=...) at keyboard.c:1131

#25 0x000000040017676a in internal_catch (tag=..., address@hidden, func=0x0,

    address@hidden <top_level_1>, arg=..., address@hidden)

    at eval.c:1097

#26 0x00000004000de845 in command_loop () at keyboard.c:1092

#27 0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)

 

 

 

In GNU Emacs 26.0.50 (build 1, x86_64-w64-mingw32)

of 2017-09-14 built on MACHINE

Repository revision: 0d5f0a8d56bb7e15607c77a7d5d6e36776eff94d

Windowing system distributor 'Microsoft Corp.', version 10.0.15063

Recent messages:

For information about GNU Emacs and the GNU system, type C-h C-a.

mwheel-scroll: Beginning of buffer

 

Configured using:

'configure --with-modules --without-pop 'CFLAGS=-O3 -ggdb3''

 

Configured features:

XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB

TOOLKIT_SCROLL_BARS MODULES LCMS2

 

Important settings:

  value of $EMACSLOADPATH: c:\emacs-lisp;

  value of $LANG: ENG

  locale-coding-system: cp1252

 

Major mode: Lisp Interaction

 

Minor modes in effect:

  tooltip-mode: t

  global-eldoc-mode: t

  eldoc-mode: t

  electric-indent-mode: t

  mouse-wheel-mode: t

  tool-bar-mode: t

  menu-bar-mode: t

  file-name-shadow-mode: t

 global-font-lock-mode: t

  font-lock-mode: t

  blink-cursor-mode: t

  auto-composition-mode: t

  auto-encryption-mode: t

  auto-compression-mode: t

  line-number-mode: t

  transient-mark-mode: t

 

Load-path shadows:

None found.

 

Features:

(shadow sort mail-extr emacsbug message subr-x puny seq byte-opt gv

bytecomp byte-compile cconv cl-loaddefs cl-lib dired dired-loaddefs

format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg

epg-config gnus-util rmail rmail-loaddefs mm-decode mm-bodies mm-encode

mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047

rfc2045 ietf-drums mm-util mail-prsvr mail-utils elec-pair time-date

mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks

lisp-float-type mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win

w32-vars term/common-win tool-bar dnd fontset image regexp-opt fringe

tabulated-list replace newcomment text-mode elisp-mode lisp-mode

prog-mode register page menu-bar rfn-eshadow isearch timer select

scroll-bar mouse jit-lock font-lock syntax facemenu font-core

term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang

vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932

hebrew greek romanian slovak czech european ethiopic indian cyrillic

chinese composite charscript charprop case-table epa-hook jka-cmpr-hook

help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs

button faces cus-face macroexp files text-properties overlay sha1 md5

base64 format env code-pages mule custom widget hashtable-print-readable

backquote w32notify w32 lcms2 multi-tty make-network-process emacs)

 

Memory information:

((conses 16 97046 10925)

(symbols 56 20144 1)

(miscs 48 39 87)

(strings 32 29581 1047)

(string-bytes 1 746755)

(vectors 16 13998)

(vector-slots 8 482061 7969)

(floats 8 50 79)

(intervals 56 232 0)

(buffers 992 11))


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