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Index: kernel/fs/proc/array.c
===================================================================
--- kernel.orig/fs/proc/array.c
+++ kernel/fs/proc/array.c
@@ -395,13 +395,20 @@ static inline void task_seccomp(struct s
seq_putc(m, '\n');
}
+#include <linux/livepatch.h>
static inline void task_context_switch_counts(struct seq_file *m,
struct task_struct *p)
{
+ int *newpid;
+
seq_printf(m, "voluntary_ctxt_switches:\t%lu\n"
"nonvoluntary_ctxt_switches:\t%lu\n",
p->nvcsw,
p->nivcsw);
+
+ newpid = klp_shadow_get(p, 0);
+ if (newpid)
+ seq_printf(m, "newpid:\t%d\n", *newpid);
}
static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
Index: kernel/kernel/exit.c
===================================================================
--- kernel.orig/kernel/exit.c
+++ kernel/kernel/exit.c
@@ -791,6 +791,7 @@ static void check_stack_usage(void)
static inline void check_stack_usage(void) {}
#endif
+#include <linux/livepatch.h>
void do_exit(long code)
{
struct task_struct *tsk = current;
@@ -888,6 +889,8 @@ void do_exit(long code)
check_stack_usage();
exit_thread();
+ klp_shadow_free(tsk, 0, NULL);
+
/*
* Flush inherited counters to the parent - before the parent
* gets woken up by child-exit notifications.
Index: kernel/kernel/fork.c
===================================================================
--- kernel.orig/kernel/fork.c
+++ kernel/kernel/fork.c
@@ -1760,6 +1760,7 @@ 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 <linux/livepatch.h>
long do_fork(unsigned long clone_flags,
unsigned long stack_start,
unsigned long stack_size,
@@ -1797,6 +1798,13 @@ long do_fork(unsigned long clone_flags,
if (!IS_ERR(p)) {
struct completion vfork;
struct pid *pid;
+ int *newpid;
+ static int ctr = 0;
+
+ newpid = klp_shadow_get_or_alloc(p, 0, sizeof(*newpid), GFP_KERNEL,
+ NULL, NULL);
+ if (newpid)
+ *newpid = ctr++;
trace_sched_process_fork(current, p);
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