Blame test/integration/rhel-7.6/shadow-newpid.patch

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diff --git a/fs/proc/array.c b/fs/proc/array.c
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index 39684c79e8e2..138b60d1314d 100644
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--- a/fs/proc/array.c
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+++ b/fs/proc/array.c
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@@ -394,13 +394,20 @@ static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
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 	seq_putc(m, '\n');
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 }
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+#include <linux/livepatch.h>
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 static inline void task_context_switch_counts(struct seq_file *m,
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 						struct task_struct *p)
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 {
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+	int *newpid;
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+
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 	seq_printf(m,	"voluntary_ctxt_switches:\t%lu\n"
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 			"nonvoluntary_ctxt_switches:\t%lu\n",
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 			p->nvcsw,
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 			p->nivcsw);
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+
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+	newpid = klp_shadow_get(p, 0);
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+	if (newpid)
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+		seq_printf(m, "newpid:\t%d\n", *newpid);
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 }
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 static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
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diff --git a/kernel/exit.c b/kernel/exit.c
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index 148a7842928d..e1dbab71b37d 100644
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--- a/kernel/exit.c
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+++ b/kernel/exit.c
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@@ -791,6 +791,7 @@ static void check_stack_usage(void)
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 static inline void check_stack_usage(void) {}
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 #endif
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+#include <linux/livepatch.h>
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 void do_exit(long code)
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 {
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 	struct task_struct *tsk = current;
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@@ -888,6 +889,8 @@ void do_exit(long code)
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 	check_stack_usage();
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 	exit_thread();
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+	klp_shadow_free(tsk, 0, NULL);
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+
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 	/*
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 	 * Flush inherited counters to the parent - before the parent
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 	 * gets woken up by child-exit notifications.
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diff --git a/kernel/fork.c b/kernel/fork.c
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index 9bff3b28c357..529a2c943d7c 100644
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--- a/kernel/fork.c
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+++ b/kernel/fork.c
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@@ -1757,6 +1757,7 @@ struct task_struct *fork_idle(int cpu)
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  * It copies the process, and if successful kick-starts
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  * it and waits for it to finish using the VM if required.
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  */
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+#include <linux/livepatch.h>
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 long do_fork(unsigned long clone_flags,
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 	      unsigned long stack_start,
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 	      unsigned long stack_size,
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@@ -1794,6 +1795,13 @@ long do_fork(unsigned long clone_flags,
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 	if (!IS_ERR(p)) {
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 		struct completion vfork;
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 		struct pid *pid;
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+		int *newpid;
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+		static int ctr = 0;
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+
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+		newpid = klp_shadow_get_or_alloc(p, 0, sizeof(*newpid), GFP_KERNEL,
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+						NULL, NULL);
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+		if (newpid)
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+			*newpid = ctr++;
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 		trace_sched_process_fork(current, p);
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