--- a/ipc/shm.c~ipc-shm-make-compat_ksys_shmctl-static +++ a/ipc/shm.c @@ -1332,7 +1332,7 @@ static int copy_compat_shmid_from_user(s } } -long compat_ksys_shmctl(int shmid, int cmd, void __user *uptr, int version) +static long compat_ksys_shmctl(int shmid, int cmd, void __user *uptr, int version) { struct ipc_namespace *ns; struct shmid64_ds sem64;