mirror of
https://github.com/dynup/kpatch
synced 2025-01-23 21:32:51 +00:00
70 lines
2.0 KiB
Diff
70 lines
2.0 KiB
Diff
|
diff -Nupr src.orig/fs/proc/array.c src/fs/proc/array.c
|
||
|
|
--- src.orig/fs/proc/array.c 2016-12-15 19:55:39.080000000 +0000
|
||
|
|
+++ src/fs/proc/array.c 2016-12-15 19:58:00.840000000 +0000
|
||
|
|
@@ -334,13 +334,20 @@ static inline void task_seccomp(struct s
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
+#include "kpatch.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 = 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 2016-12-15 19:56:00.184000000 +0000
|
||
|
|
+++ src/kernel/exit.c 2016-12-15 19:58:00.840000000 +0000
|
||
|
|
@@ -650,6 +650,7 @@ static void check_stack_usage(void)
|
||
|
|
static inline void check_stack_usage(void) {}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
+#include "kpatch.h"
|
||
|
|
void do_exit(long code)
|
||
|
|
{
|
||
|
|
struct task_struct *tsk = current;
|
||
|
|
@@ -758,6 +759,8 @@ void do_exit(long code)
|
||
|
|
|
||
|
|
cgroup_exit(tsk);
|
||
|
|
|
||
|
|
+ kpatch_shadow_free(tsk, "newpid");
|
||
|
|
+
|
||
|
|
/*
|
||
|
|
* FIXME: do that only when needed, using sched_exit tracepoint
|
||
|
|
*/
|
||
|
|
diff -Nupr src.orig/kernel/fork.c src/kernel/fork.c
|
||
|
|
--- src.orig/kernel/fork.c 2016-12-15 19:56:00.184000000 +0000
|
||
|
|
+++ src/kernel/fork.c 2016-12-15 19:58:00.840000000 +0000
|
||
|
|
@@ -1726,6 +1726,7 @@ 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,
|
||
|
|
@@ -1764,6 +1765,13 @@ 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);
|
||
|
|
|