Bug 1544204

Coccinelle isn't able to run python scripts. The error message is: "Python error: No module named coccilib.elems"

Version-Release number:
$ rpm -qa | grep cocci
coccinelle-1.0.6-14.fc27.x86_64

$ spatch --version
spatch version 1.0.6 compiled with OCaml version 4.05.0
Flags passed to the configure script: --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --program-prefix= --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/var/lib --mandir=/usr/share/man --infodir=/usr/share/info --enable-release=yes --with-python=/usr/bin/python3 --with-menhir=/usr/bin/menhir
Python scripting support: yes
Syntax of regular expresssions: PCRE


Steps to Reproduce:
[acooks@t460s linux]$ cd ~/linux # linux kernel source directory
[acooks@t460s linux]$ make coccicheck MODE=report V=1
/bin/sh ./scripts/coccicheck

Please check for false positives in the output before submitting a patch.
When using "patch" mode, carefully review the patch before submitting it.

Processing alloc_cast.cocci
with option(s) " --no-includes --include-headers"

Message example to submit a patch:
 Remove casting the values returned by memory allocation functions
 like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc.

 The semantic patch that makes this report is available
 in scripts/coccinelle/api/alloc/alloc_cast.cocci.

 More information about semantic patching is available at
 http://coccinelle.lip6.fr/

Semantic patch information:
 This makes an effort to find cases of casting of values returned by
 kmalloc, kzalloc, kcalloc, kmem_cache_alloc, kmem_cache_zalloc,
 kmem_cache_alloc_node, kmalloc_node and kzalloc_node and removes
 the casting as it is not required. The result in the patch case may
need some reformatting.

Running (4 in parallel): /usr/bin/spatch -D report --no-show-diff --very-quiet --cocci-file ./scripts/coccinelle/api/alloc/alloc_cast.cocci --no-includes --include-headers --dir . -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi --include ./include/linux/kconfig.h --jobs 4 --chunksize 1
coccicheck failed


[acooks@t460s linux]$ /usr/bin/spatch -D report --no-show-diff --very-quiet --cocci-file ./scripts/coccinelle/api/alloc/alloc_cast.cocci --no-includes --include-headers --dir . -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi --include ./include/linux/kconfig.h --jobs 4 --chunksize 1
Python error: No module named coccilib.elems


[acooks@t460s linux]$ /usr/bin/spatch -D report --no-show-diff --very-quiet --cocci-file ./scripts/coccinelle/api/alloc/alloc_cast.cocci --no-includes --include-headers --dir . -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi --include ./include/linux/kconfig.h --jobs 4 --chunksize 1 --debug
init_defs_builtins: /usr/lib64/coccinelle/standard.h
-----------------------------------------------------------------------
processing semantic patch file: ./scripts/coccinelle/api/alloc/alloc_cast.cocci
with isos from: /usr/lib64/coccinelle/standard.iso
-----------------------------------------------------------------------
/// Remove casting the values returned by memory allocation functions
/// like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc.
///
//# This makes an effort to find cases of casting of values returned by
//# kmalloc, kzalloc, kcalloc, kmem_cache_alloc, kmem_cache_zalloc,
//# kmem_cache_alloc_node, kmalloc_node and kzalloc_node and removes
//# the casting as it is not required. The result in the patch case may
//#need some reformatting.
//
// Confidence: High
// Copyright: 2014, Himangi Saraogi  GPLv2.
// Comments:
// Options: --no-includes --include-headers
//

virtual context
virtual patch
virtual org
virtual report

//----------------------------------------------------------
//  For context mode
//----------------------------------------------------------

@depends on context@
type T;
@@

* (T *)
  \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
   kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)

//----------------------------------------------------------
//  For patch mode
//----------------------------------------------------------

@depends on patch@
type T;
@@

- (T *)
  (\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
   kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...))

//----------------------------------------------------------
//  For org and report mode
//----------------------------------------------------------

@r depends on org || report@
type T;
position p;
@@

 (T@p *)\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
   kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)

@script:python depends on org@
p << r.p;
t << r.T;
@@

coccilib.org.print_safe_todo(p[0], t)

@script:python depends on report@
p << r.p;
t << r.T;
@@

msg="WARNING: casting value returned by memory allocation function to (%s *) is useless." % (t)
coccilib.report.print_report(p[0], msg)



-----------------------------------------------------------------------
script  = 
-----------------------------------------------------------------------
dependencies for script satisfied:
binding in = []
Initializing python
%!
Python error: No module named coccilib.elems