error: too few arguments to function 'ptrace'

[ghost]

hampo@hampo-virtual-machine:/Desktop/CVE-2016-5195-master$ make
ndk-build NDK_PROJECT_PATH=. APP_BUILD_SCRIPT=./Android.mk APP_ABI=armeabi-v7a APP_PLATFORM=android-21
make[1]: Entering directory /home/hampo/Desktop/CVE-2016-5195-master' [armeabi-v7a] Compile thumb : dirtycow <= dirtycow.c ./dirtycow.c: In function 'ptrace_memcpy': ./dirtycow.c:111:3: warning: passing argument 4 of 'ptrace' makes pointer from integer without a cast [enabled by default] /usr/share/android-ndk-r10/platforms/android-19/arch-arm/usr/include/sys/ptrace.h:41:13: note: expected 'void *' but argument is of type 'long unsigned int' ./dirtycow.c:132:3: warning: passing argument 4 of 'ptrace' makes pointer from integer without a cast [enabled by default] /usr/share/android-ndk-r10/platforms/android-19/arch-arm/usr/include/sys/ptrace.h:41:13: note: expected 'void *' but argument is of type 'long unsigned int' ./dirtycow.c: In function 'exploit': ./dirtycow.c:217:4: error: too few arguments to function 'ptrace' /usr/share/android-ndk-r10/platforms/android-19/arch-arm/usr/include/sys/ptrace.h:41:13: note: declared here make[1]: *** [obj/local/armeabi-v7a/objs/dirtycow/dirtycow.o] Error 1 make[1]: Leaving directory /home/hampo/Desktop/CVE-2016-5195-master'
make: *** [build] Error 2
hampo@hampo-virtual-machine:/Desktop/CVE-2016-5195-master$

How to solve this problem?

[timwr]

Not sure.. off the top of my head maybe you need to use a more recent ndk? perhaps ndk-r13?