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@xxxxxxxxxx> To: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Cc: Eric Dumazet <edumazet@xxxxxxxxxx> Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx> Cc: Petr Mladek <pmladek@xxxxxxxx> Cc: Vegard Nossum <vegard.nossum@xxxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Marco Elver <elver@xxxxxxxxxx> Cc: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Cc: linux-mm@xxxxxxxxx --- This patch was previously called "kmsan: call KMSAN hooks where needed" v4: - split this patch away Change-Id: I7a6a83419b0e038f8993175461255f462a430205 --- kernel/exit.c | 2 ++ kernel/fork.c | 2 ++ kernel/kthread.c | 2 ++ 3 files changed, 6 insertions(+) diff --git a/kernel/exit.c b/kernel/exit.c index e93c6197a827c..377f9edbb28fa 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -60,6 +60,7 @@ #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> @@ -709,6 +710,7 @@ void __noreturn do_exit(long code) profile_task_exit(tsk); kcov_task_exit(tsk); + kmsan_task_exit(tsk); WARN_ON(blk_needs_flush_plug(tsk)); diff --git a/kernel/fork.c b/kernel/fork.c index d48e063a3abe7..21f7f411880d3 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> @@ -943,6 +944,7 @@ 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); #ifdef CONFIG_FAULT_INJECTION tsk->fail_nth = 0; diff --git a/kernel/kthread.c b/kernel/kthread.c index b262f47046ca4..33ca743ca8b54 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -17,6 +17,7 @@ #include <linux/unistd.h> #include <linux/file.h> #include <linux/export.h> +#include <linux/kmsan.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/freezer.h> @@ -350,6 +351,7 @@ struct task_struct *__kthread_create_on_node(int (*threadfn)(void *data), set_cpus_allowed_ptr(task, cpu_all_mask); } kfree(create); + kmsan_task_create(task); return task; } -- 2.25.1.696.g5e7596f4ac-goog
