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Subject[PATCH 17/43] kmsan: handle task creation and exiting
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Tell KMSAN that a new task is created, so the tool creates a backing
metadata structure for that task.

Signed-off-by: Alexander Potapenko <glider@google.com>
---
Link: https://linux-review.googlesource.com/id/I0f41c3a1c7d66f7e14aabcfdfc7c69addb945805
---
kernel/exit.c | 2 ++
kernel/fork.c | 2 ++
2 files changed, 4 insertions(+)

diff --git a/kernel/exit.c b/kernel/exit.c
index f702a6a63686e..a276f6716dcd5 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -59,6 +59,7 @@
#include <linux/writeback.h>
#include <linux/shm.h>
#include <linux/kcov.h>
+#include <linux/kmsan.h>
#include <linux/random.h>
#include <linux/rcuwait.h>
#include <linux/compat.h>
@@ -767,6 +768,7 @@ void __noreturn do_exit(long code)

profile_task_exit(tsk);
kcov_task_exit(tsk);
+ kmsan_task_exit(tsk);

coredump_task_exit(tsk);
ptrace_event(PTRACE_EVENT_EXIT, code);
diff --git a/kernel/fork.c b/kernel/fork.c
index 3244cc56b697d..5d53ffab2cda7 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -37,6 +37,7 @@
#include <linux/fdtable.h>
#include <linux/iocontext.h>
#include <linux/key.h>
+#include <linux/kmsan.h>
#include <linux/binfmts.h>
#include <linux/mman.h>
#include <linux/mmu_notifier.h>
@@ -955,6 +956,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig, int node)
account_kernel_stack(tsk, 1);

kcov_task_init(tsk);
+ kmsan_task_create(tsk);
kmap_local_fork(tsk);

#ifdef CONFIG_FAULT_INJECTION
--
2.34.1.173.g76aa8bc2d0-goog
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