[Pkg-mc-devel] Bug#870728: mc: random crash on startup (SIGSEGV)

[Paul Wise]

Package: mc
Version: 3:4.8.18-1
Severity: normal
Usertags: crash

I got a random crash when starting mc:

$ gdb -batch -n -ex 'set pagination off' -ex bt -ex 'thread apply all bt full' --core /var/crash/1000/5115-1000-1000-11-1501856299-chianamo--usr-bin-mc.core /usr/bin/mc
[New LWP 5115]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `mc -b'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x0000007962f9acd5 in vfs_path_elements_count (vpath=vpath at entry=0xfefefefefefefefe) at path.c:797
797	path.c: No such file or directory.
#0  0x0000007962f9acd5 in vfs_path_elements_count (vpath=vpath at entry=0xfefefefefefefefe) at path.c:797
#1  0x0000007962f9b1a5 in vfs_path_free (vpath=0xfefefefefefefefe) at path.c:954
#2  0x0000007963007e69 in mcview_done (view=view at entry=0x79634d3000) at lib.c:228
#3  0x0000007963001c7e in mcview_hook (v=0x79634d3000) at actions_cmd.c:211
#4  0x0000007962f7f7ae in execute_hooks (hook_list=<optimized out>) at hook.c:89
#5  0x0000007962f79735 in frontend_dlg_run (h=0x79634d2030) at dialog.c:525
#6  dlg_run (h=0x79634d2030) at dialog.c:1196
#7  0x0000007962f922cf in create_panels_and_run_mc () at midnight.c:952
#8  do_nc () at midnight.c:1768
#9  0x0000007962f6da80 in main (argc=<optimized out>, argv=<optimized out>) at main.c:403

Thread 1 (Thread 0x7f70c5dc1740 (LWP 5115)):
#0  0x0000007962f9acd5 in vfs_path_elements_count (vpath=vpath at entry=0xfefefefefefefefe) at path.c:797
No locals.
#1  0x0000007962f9b1a5 in vfs_path_free (vpath=0xfefefefefefefefe) at path.c:954
        vpath_element_index = 0
#2  0x0000007963007e69 in mcview_done (view=view at entry=0x79634d3000) at lib.c:228
No locals.
#3  0x0000007963001c7e in mcview_hook (v=0x79634d3000) at actions_cmd.c:211
        view = 0x79634d3000
        panel = 0x79634da000
        v = 0x79634d3000
        view = 0x79634d3000
#4  0x0000007962f7f7ae in execute_hooks (hook_list=<optimized out>) at hook.c:89
        new_hook = 0x79634f2690
        p = 0x79634f2690
#5  0x0000007962f79735 in frontend_dlg_run (h=0x79634d2030) at dialog.c:525
        d_key = <optimized out>
        wh = 0x79634d2030
        event = {buttons = 0 '\000', modifiers = 0 '\000', vc = 0, dx = 0, dy = 0, x = -1, y = 25335, type = (GPM_MOVE | GPM_UP | GPM_SINGLE | GPM_DOUBLE | GPM_TRIPLE), clicks = 1666068480, margin = (GPM_TOP | GPM_RGT | unknown: 112), wdx = -12544, wdy = 25380}
#6  dlg_run (h=0x79634d2030) at dialog.c:1196
No locals.
#7  0x0000007962f922cf in create_panels_and_run_mc () at midnight.c:952
No locals.
#8  do_nc () at midnight.c:1768
        ret = <optimized out>
#9  0x0000007962f6da80 in main (argc=<optimized out>, argv=<optimized out>) at main.c:403
        mcerror = 0x0
        config_migrated = <optimized out>
        config_migrate_msg = 0x7f70c461313c <_int_malloc+1228> "\351E\376\377\377\017\037\200"
        exit_code = 1

-- System Information:
Debian Release: buster/sid
  APT prefers testing-debug
  APT policy: (900, 'testing-debug'), (900, 'testing'), (800, 'unstable-debug'), (800, 'unstable'), (790, 'buildd-unstable'), (700, 'experimental-debug'), (700, 'experimental'), (690, 'buildd-experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.11.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8), LANGUAGE=en_AU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages mc depends on:
ii  e2fslibs      1.43.4-2
ii  libc6         2.24-12
ii  libglib2.0-0  2.52.3-1
ii  libgpm2       1.20.4-6.2+b1
ii  libslang2     2.3.1a-1
ii  libssh2-1     1.8.0-1
ii  mc-data       3:4.8.18-1

Versions of packages mc recommends:
ii  mime-support  3.60
ii  perl          5.26.0-5
ii  unzip         6.0-21

Versions of packages mc suggests:
pn  arj                              <none>
ii  bzip2                            1.0.6-8.1
pn  dbview                           <none>
pn  djvulibre-bin                    <none>
ii  evince [pdf-viewer]              3.22.1-4
ii  file                             1:5.30-1
ii  genisoimage                      9:1.1.11-3+b2
pn  gv                               <none>
ii  imagemagick                      8:6.9.7.4+dfsg-16
ii  imagemagick-6.q16 [imagemagick]  8:6.9.7.4+dfsg-16
pn  libaspell-dev                    <none>
ii  lynx                             2.8.9dev16-1
pn  odt2txt                          <none>
ii  poppler-utils                    0.48.0-2
ii  python                           2.7.13-2
pn  python-boto                      <none>
ii  python-tz                        2017.2-2
ii  texlive-binaries                 2017.20170613.44572-3
ii  w3m                              0.5.3-34
ii  zip                              3.0-11+b1

-- no debconf information

-- 
bye,
pabs

https://wiki.debian.org/PaulWise
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