diff -Nupr src.orig/fs/proc/array.c src/fs/proc/array.c
--- src.orig/fs/proc/array.c 2017-11-17 15:58:41.136211972 -0500
+++ src/fs/proc/array.c 2017-11-17 15:59:36.184211972 -0500
@@ -354,12 +354,19 @@ static inline void task_seccomp(struct s
seq_putc(m, '\n');
}
+#include "kpatch.h"
static inline void task_context_switch_counts(struct seq_file *m,
struct task_struct *p)
{
+ int *newpid;
+
seq_put_decimal_ull(m, "voluntary_ctxt_switches:\t", p->nvcsw);
seq_put_decimal_ull(m, "\nnonvoluntary_ctxt_switches:\t", p->nivcsw);
seq_putc(m, '\n');
+
+ newpid = kpatch_shadow_get(p, "newpid");
+ if (newpid)
+ seq_printf(m, "newpid:\t%d\n", *newpid);
}
static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
diff -Nupr src.orig/kernel/exit.c src/kernel/exit.c
--- src.orig/kernel/exit.c 2017-11-17 15:58:51.659211972 -0500
+++ src/kernel/exit.c 2017-11-17 15:59:36.184211972 -0500
@@ -760,6 +760,7 @@ static void check_stack_usage(void)
static inline void check_stack_usage(void) {}
#endif
+#include "kpatch.h"
void __noreturn do_exit(long code)
{
struct task_struct *tsk = current;
@@ -865,6 +866,8 @@ void __noreturn do_exit(long code)
exit_task_work(tsk);
exit_thread(tsk);
+ kpatch_shadow_free(tsk, "newpid");
+
/*
* Flush inherited counters to the parent - before the parent
* gets woken up by child-exit notifications.
diff -Nupr src.orig/kernel/fork.c src/kernel/fork.c
--- src.orig/kernel/fork.c 2017-11-17 15:58:51.541211972 -0500
+++ src/kernel/fork.c 2017-11-17 15:59:36.184211972 -0500
@@ -2003,6 +2003,7 @@ struct task_struct *fork_idle(int cpu)
* It copies the process, and if successful kick-starts
* it and waits for it to finish using the VM if required.
*/
+#include "kpatch.h"
long _do_fork(unsigned long clone_flags,
unsigned long stack_start,
unsigned long stack_size,
@@ -2042,6 +2043,13 @@ long _do_fork(unsigned long clone_flags,
if (!IS_ERR(p)) {
struct completion vfork;
struct pid *pid;
+ int *newpid;
+ static int ctr = 0;
+
+ newpid = kpatch_shadow_alloc(p, "newpid", sizeof(*newpid),
+ GFP_KERNEL);
+ if (newpid)
+ *newpid = ctr++;
trace_sched_process_fork(current, p);