diff -Naur drbd-9.0.25~0+git.bd41626d.orig/drbd/drbd-kernel-compat/gen_compat_patch.sh drbd-9.0.25~0+git.bd41626d/drbd/drbd-kernel-compat/gen_compat_patch.sh
--- drbd-9.0.25~0+git.bd41626d.orig/drbd/drbd-kernel-compat/gen_compat_patch.sh	2020-09-19 08:34:40.643919136 +0800
+++ drbd-9.0.25~0+git.bd41626d/drbd/drbd-kernel-compat/gen_compat_patch.sh	2020-09-19 08:50:59.095231966 +0800
@@ -44,9 +44,15 @@
 
 if hash spatch && spatch_is_recent; then
     K=$(cat $incdir/kernelrelease.txt)
+    echo "  compat.h content ";
+    cat $incdir/compat.h;
+    echo "  -------------------   ";
     echo "  GENPATCHNAMES   "$K
     gcc -I $incdir -o $incdir/gen_patch_names -std=c99 drbd-kernel-compat/gen_patch_names.c
     $incdir/gen_patch_names > $incdir/applied_cocci_files.txt
+    echo "  APPLIED_COCCI_FILES   ";
+    cat $incdir/applied_cocci_files.txt;
+    echo "  -------------------   ";
     rm $incdir/gen_patch_names
     rm -f $incdir/.compat.cocci
     rm -f $incdir/.compat.patch
@@ -61,29 +67,46 @@
 		< drbd-kernel-compat/cocci/debugfs_compat_template.cocci.in \
 		>> $incdir/.compat.cocci
     done
+
+    coccilibpath=$(rpm -ql coccinelle|grep standard.h|xargs dirname);
+    echo "  SPATCH_SOURCES: "$*;
+    echo "  COCCI_LIBPATH: "$coccilibpath;
+
     if [ -e $incdir/.compat.cocci ]; then
-	echo "  SPATCH   $chksum  "$K
-	# Note: $* (or $@) is NOT make magic variable now, this is a shell script
-	# make $@, the target file, was passed as $1, and is now $compat_patch
-	# make $^, the source (and header) files spatch should operate on,
-	# are "the rest of the shell argument array", so after shifting the first
-	# argument away this is shell $@ respectively $* now.
-	# we know we don't have white-space in the argument list
+    	echo "  GENCOCCIRULES .compat.cocci";
+    	cat $incdir/.compat.cocci;
 
-	command="spatch --sp-file $incdir/.compat.cocci $* --macro-file drbd-kernel-compat/cocci_macros.h --very-quiet > $compat_patch.tmp 2> $incdir/.spatch.stderr;"
+		echo "  SPATCH   $chksum  "$K
+		# Note: $* (or $@) is NOT make magic variable now, this is a shell script
+		# make $@, the target file, was passed as $1, and is now $compat_patch
+		# make $^, the source (and header) files spatch should operate on,
+		# are "the rest of the shell argument array", so after shifting the first
+		# argument away this is shell $@ respectively $* now.
+		# we know we don't have white-space in the argument list
 
-	if test -t 0; then
-	    $SHELL -c "$command"
-	else
-	    # spatch is broken in a way: it "requires" a tty.
-	    # provide a tty using "script", so I can have several spatch in parallel.
-	    # They may ignore INT and TERM; if you have to, use HUP.
-	    </dev/null &> /dev/null script --append $incdir/.spatch.tty.out --return --quiet --command "$command"
-	fi
+    	command="spatch --sp-file $incdir/.compat.cocci $* --macro-file drbd-kernel-compat/cocci_macros.h --macro-file-builtins $coccilibpath/standard.h --iso-file $coccilibpath/standard.iso --very-quiet > $compat_patch.tmp 2> $incdir/.spatch.stderr;"                                           
+    	echo "  SPATCH COMMAND $command  ";
+
+		if test -t 0; then
+		    $SHELL -c "$command"
+		else
+		    # spatch is broken in a way: it "requires" a tty.
+		    # provide a tty using "script", so I can have several spatch in parallel.
+		    # They may ignore INT and TERM; if you have to, use HUP.
+		    </dev/null &> /dev/null script --append $incdir/.spatch.tty.out --return --quiet --command "$command"
+		fi
     else
-	echo "  SPATCH   $chksum  "$K" - nothing to do"
-	touch $compat_patch.tmp
+		echo "  SPATCH   $chksum  "$K" - nothing to do"
+		touch $compat_patch.tmp
+    fi
+
+    echo "  GENSPATCHFILE $compat_patch.tmp  ";
+    cat $compat_patch.tmp;
+    if [ -e $incdir/.spatch.stderr ]; then
+        echo "  GENSPATCHERR .spatch.stderr";
+        cat $incdir/.spatch.stderr;
     fi
+
     if [ -e $incdir/.compat.patch ]; then
 	cat $incdir/.compat.patch >> $compat_patch.tmp
     fi