Segmentation fault in __get_nprocs () at ../sysdeps/unix/sysv/linux/getsysstats.c:186

[ShiningZhang]

1、# vim --version
VIM - Vi IMproved 8.0 (2016 Sep 12, compiled Aug 30 2017 20:16:12)
Included patches: 1-1015
Compiled by root@nm_178_217
Huge version without GUI. Features included (+) or not (-):
+acl +file_in_path +mouse_sgr +tag_old_static
+arabic +find_in_path -mouse_sysmouse -tag_any_white
+autocmd +float +mouse_urxvt -tcl
-balloon_eval +folding +mouse_xterm +termguicolors
-browse -footer +multi_byte -terminal
++builtin_terms +fork() +multi_lang +terminfo
+byte_offset +gettext -mzscheme +termresponse
+channel -hangul_input +netbeans_intg +textobjects
+cindent +iconv +num64 +timers
+clientserver +insert_expand +packages +title
+clipboard +job +path_extra -toolbar
+cmdline_compl +jumplist +perl +user_commands
+cmdline_hist +keymap +persistent_undo +vertsplit
+cmdline_info +lambda +postscript +virtualedit
+comments +langmap +printer +visual
+conceal +libcall +profile +visualextra
+cryptv +linebreak +python +viminfo
+cscope +lispindent -python3 +vreplace
+cursorbind +listcmds +quickfix +wildignore
+cursorshape +localmap +reltime +wildmenu
+dialog_con +lua +rightleft +windows
+diff +menu +ruby +writebackup
+digraphs +mksession +scrollbind +X11
-dnd +modify_fname +signs +xfontset
-ebcdic +mouse +smartindent -xim
+emacs_tags -mouseshape +startuptime -xpm
+eval +mouse_dec +statusline +xsmp_interact
+ex_extra -mouse_gpm -sun_workshop +xterm_clipboard
+extra_search -mouse_jsbterm +syntax -xterm_save
+farsi +mouse_netterm +tag_binary
system vimrc file: "$VIM/vimrc"
user vimrc file: "$HOME/.vimrc"
2nd user vimrc file: "~/.vim/vimrc"
user exrc file: "$HOME/.exrc"
defaults file: "$VIMRUNTIME/defaults.vim"
fall-back for $VIM: "/usr/local/share/vim"
f-b for $VIMRUNTIME: "/usr/local/share/vim/vim80"
Compilation: gcc -std=gnu99 -c -I. -Iproto -DHAVE_CONFIG_H -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
Linking: gcc -std=gnu99 -L. -rdynamic -Wl,-export-dynamic -Wl,-E -Wl,-rpath,/usr/lib64/perl5/CORE -L/usr/local/lib -Wl,--as-needed -o vim -lSM -lICE -lXt -lX11 -lSM -lICE -lm -ltinfo -lnsl -lselinux -L/usr/lib -llua -Wl,-E -Wl,-rpath,/usr/lib64/perl5/CORE -fstack-protector -L/usr/lib64/perl5/CORE -lperl -lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc -L/usr/lib/python2.7/config -lpython2.6 -lruby -lpthread -lrt -ldl -lcrypt -lm

2、gdb info：
(gdb) r -u vimrc
Starting program: /usr/local/bin/vim -u vimrc
/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
[Thread debugging using libthread_db enabled]
Detaching after fork from child process 36503.
[New Thread 0x7ffff3d4d700 (LWP 36504)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff3d4d700 (LWP 36504)]
0x00007ffff7b029b4 in __get_nprocs () at ../sysdeps/unix/sysv/linux/getsysstats.c:186
186 ../sysdeps/unix/sysv/linux/getsysstats.c: No such file or directory.
in ../sysdeps/unix/sysv/linux/getsysstats.c
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.149.el6_6.9.x86_64 keyutils-libs-1.4-5.el6.x86_64 krb5-libs-1.10.3-37.el6_6.x86_64 libICE-1.0.6-1.el6.x86_64 libSM-1.2.1-2.el6.x86_64 libX11-1.6.0-2.2.el6.x86_64 libXau-1.0.6-4.el6.x86_64 libXt-1.1.4-6.1.el6.x86_64 libcom_err-1.41.12-21.el6.x86_64 libgcc-4.4.7-11.el6.x86_64 libselinux-2.0.94-5.8.el6.x86_64 libuuid-2.17.2-12.18.el6.x86_64 libxcb-1.9.1-2.el6.x86_64 lua-5.1.4-4.1.el6.x86_64 ncurses-libs-5.7-4.20090207.el6.x86_64 nss-softokn-freebl-3.14.3-22.el6_6.x86_64 openssl-1.0.1e-30.el6_6.11.x86_64 perl-libs-5.10.1-136.el6_6.1.x86_64 python-libs-2.6.6-52.el6.x86_64 ruby-libs-1.8.7.374-4.el6_6.x86_64 zlib-1.2.3-29.el6.x86_64

3、install：
python install.py --clang-completer
4、environment：
gcc 7.2.0
red hat6
python2.6.6

[micbou]

Does Vim crash when started with the command

vim -u NONE -c "py print(sys.version)"

?

[ShiningZhang]

After printing “2.6.6 (r266:84292, Nov 21 2013, 10:50:32)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)]
”，it worked

[ShiningZhang]

I re-installed YCM through Vundle and vim also crashed as the same log

[micbou]

Could you share the backtrace by following these instructions? The __get_nprocs() error is not the cause of the segfault.

[ShiningZhang]

It's too hard for me to re-compile the vim with debug option. So I give up this issue. Thank you for your help.

[micbou]

Your Vim is already compiled with the -g flag:

Compilation: gcc -std=gnu99 -c -I. -Iproto -DHAVE_CONFIG_H -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1

So, you just need to follow these steps:

• run ulimit - c unlimited in the shell;
• start Vim and reproduce the crash; you should see the message Segmentation fault (core dumped) and a file core should be created in the current directory;
• open it with gdb: gdb vim core;
• type bt in gdb to obtain the backtrace.

[micbou]

No answer. Closing.

[zhaozheng09]

No answer. Closing.
I have same question about this~.
gdb vim core.9341
then bt
#0 0x00000030154119c3 in _nc_tparm_analyze () from /lib64/libtinfo.so.5
#1 0x0000003015411d55 in tparm () from /lib64/libtinfo.so.5
#2 0x00000000005885e2 in ?? ()
#3 0x000000000053adb9 in ?? ()
#4 0x00000000004c8c43 in ?? ()
#5 0x00000000004c8c69 in ?? ()
#6
#7 0x00007f3e71aa92b4 in __get_nprocs () at ../sysdeps/unix/sysv/linux/getsysstats.c:186
#8 0x00007f3e71a403d5 in arena_get2 (size=544, a_tsd=) at arena.c:833
#9 0x00007f3e71a41255 in __GI___libc_malloc (bytes=544) at malloc.c:2921
#10 0x00007f3e71e583b5 in _PyObject_Malloc (ctx=, nbytes=544) at Objects/obmalloc.c:1579
#11 0x00007f3e71f4e3c4 in _PyObject_GC_Alloc (basicsize=, use_calloc=0) at Modules/gcmodule.c:1696
#12 _PyObject_GC_Malloc (basicsize=) at Modules/gcmodule.c:1718
#13 0x00007f3e71f4e69a in _PyObject_GC_NewVar (tp=tp@entry=0x7f3e72256480 <PyFrame_Type>, nitems=19) at Modules/gcmodule.c:1747
#14 0x00007f3e71e1b2b1 in _PyFrame_New_NoTrack (tstate=tstate@entry=0x143a310, code=0x7f3e70ebcae0, globals=0x7f3e70ea93f0, locals=locals@entry=0x0)
at Objects/frameobject.c:713
#15 0x00007f3e71e01b20 in function_code_fastcall (co=, args=0x7f3e6e304540, nargs=1, globals=) at Objects/call.c:272
#16 0x00007f3e71dff646 in _PyFunction_FastCallKeywords (func=, stack=, nargs=, kwnames=) at Objects/call.c:415
#17 0x00007f3e71ef2cf6 in call_function (kwnames=0x0, oparg=, pp_stack=) at Python/ceval.c:4616
#18 _PyEval_EvalFrameDefault (f=, throwflag=) at Python/ceval.c:3110
#19 0x00007f3e71e01b5f in function_code_fastcall (co=co@entry=0x7f3e70ebc930, args=, args@entry=0x7f3e6e2cdd10, nargs=1,
globals=globals@entry=0x7f3e70ea93f0) at Objects/call.c:283
#20 0x00007f3e71dff4cf in _PyFunction_FastCallDict (func=0x7f3e70dfd620, args=0x7f3e6e2cdd10, nargs=, kwargs=0x0) at Objects/call.c:322
#21 0x00007f3e71e004ed in _PyObject_Call_Prepend (callable=0x7f3e70dfd620, obj=, args=0x7f3e71774048, kwargs=0x0) at Objects/call.c:904
#22 0x00007f3e71e01968 in PyObject_Call (callable=0x7f3e71683708, args=, kwargs=) at Objects/call.c:245
#23 0x00007f3e71f84673 in t_bootstrap (boot_raw=boot_raw@entry=0x7f3e6e2d9c88) at ./Modules/_threadmodule.c:994
#24 0x00007f3e71f34fc7 in pythread_wrapper (arg=) at Python/thread_pthread.h:174
#25 0x00000030138079d1 in start_thread () from /lib64/libpthread.so.0
#26 0x00007f3e71aa9b7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115