Bug 1051913

Summary: [abrt] emacs: count_windows(): emacs-24.3 killed by SIGSEGV
Product: [Fedora] Fedora Reporter: Samium Gromoff <_deepfire>
Component: emacsAssignee: Petr Hracek <phracek>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 20CC: jchaloup, jonathan.underwood, phracek
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
URL: https://retrace.fedoraproject.org/faf/reports/bthash/582242c6a6878280e19c40dfddf21e6b6c4207a4
Whiteboard: abrt_hash:e177a269c28ea19395d06ca7ef70931267d0a250
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-07-29 11:24:16 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
File: backtrace
none
File: cgroup
none
File: core_backtrace
none
File: dso_list
none
File: environ
none
File: exploitable
none
File: limits
none
File: maps
none
File: open_fds
none
File: proc_pid_status
none
File: var_log_messages none

Description Samium Gromoff 2014-01-12 20:53:14 UTC 
Description of problem:
I'm not sure what exactly triggered this error in emacs, but here what I was
doing at the time:

1. I plugged in an external display into my Lenovo W530's mini-DP port,
and tried setting that as a primary display.

2. GDM crashed, and I had to relogin.

3. Upon relogin, I couldn't attach any emacs clients (emacsclient -c),
so I figured something was wrong with the emacs server -- so

4. I sent emacs a SIGTERM (killall emacs).

Version-Release number of selected component:
emacs-24.3-13.fc20

Additional info:
reporter:       libreport-2.1.11
backtrace_rating: 4
cmdline:        emacs
crash_function: count_windows
executable:     /usr/bin/emacs-24.3
kernel:         3.11.10-301.fc20.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 count_windows at /usr/src/debug/emacs-24.3/src/window.c:5955
 #2 Fcurrent_window_configuration at /usr/src/debug/emacs-24.3/src/window.c:6178
 #3 Ffuncall at /usr/src/debug/emacs-24.3/src/eval.c:2778
 #4 exec_byte_code at /usr/src/debug/emacs-24.3/src/bytecode.c:900
 #5 funcall_lambda at /usr/src/debug/emacs-24.3/src/eval.c:3010
 #6 Ffuncall at /usr/src/debug/emacs-24.3/src/eval.c:2839
 #7 exec_byte_code at /usr/src/debug/emacs-24.3/src/bytecode.c:900
 #8 funcall_lambda at /usr/src/debug/emacs-24.3/src/eval.c:3010
 #9 Ffuncall at /usr/src/debug/emacs-24.3/src/eval.c:2839
 #10 call0 at /usr/src/debug/emacs-24.3/src/eval.c:2557
Comment 1 Samium Gromoff 2014-01-12 20:53:20 UTC 
Created attachment 848987 [details]
File: backtrace
Comment 2 Samium Gromoff 2014-01-12 20:53:22 UTC 
Created attachment 848988 [details]
File: cgroup
Comment 3 Samium Gromoff 2014-01-12 20:53:24 UTC 
Created attachment 848989 [details]
File: core_backtrace
Comment 4 Samium Gromoff 2014-01-12 20:53:27 UTC 
Created attachment 848990 [details]
File: dso_list
Comment 5 Samium Gromoff 2014-01-12 20:53:29 UTC 
Created attachment 848991 [details]
File: environ
Comment 6 Samium Gromoff 2014-01-12 20:53:31 UTC 
Created attachment 848992 [details]
File: exploitable
Comment 7 Samium Gromoff 2014-01-12 20:53:33 UTC 
Created attachment 848993 [details]
File: limits
Comment 8 Samium Gromoff 2014-01-12 20:53:36 UTC 
Created attachment 848994 [details]
File: maps
Comment 9 Samium Gromoff 2014-01-12 20:53:38 UTC 
Created attachment 848995 [details]
File: open_fds
Comment 10 Samium Gromoff 2014-01-12 20:53:40 UTC 
Created attachment 848996 [details]
File: proc_pid_status
Comment 11 Samium Gromoff 2014-01-12 20:53:42 UTC 
Created attachment 848997 [details]
File: var_log_messages
Comment 12 Jan Chaloupka 2014-07-29 11:24:16 UTC 
This was caused by gdb crash. From backtrace:

Program terminated with signal SIGSEGV, Segmentation fault.
#0  count_windows (window=<optimized out>) at /usr/src/debug/emacs-24.3/src/window.c:5955
5955	  if (!NILP (window->next))

window is most likely undefined or its original values has changed. Thus resulting in invalid address.
Comment 13 Jan Chaloupka 2014-07-29 11:27:34 UTC 
> 4. I sent emacs a SIGTERM (killall emacs).

This then cause emacs to end and crash.

If you manage to reproduce this issue, don't hesitate to reopen the bug. Steps to reproduce this issue are most valuated. Otherwise I will not be able to analyze this issue.
Comment 14 Jan Chaloupka 2014-07-29 11:35:53 UTC 
Steps to create core with full backtrace information for emacs:

$ cd /tmp

download the latest emacs build from https://jchaloup.fedorapeople.org for your distribution and architecture (wget can be used). Should be always actual release in fedora + 1.
$ wget  https://jchaloup.fedorapeople.org/emacs-24.3-19.fc20.x86_64.rpm

install downloaded rpm, release can vary
# rpm -Uvh emacs-24.3-19.fc20.x86_64.rpm

Then reproduce the issue and upload generated core.

After reproducing, just run
# yum distro-sync emacs