On Sun, Feb 9, 2020 at 11:48 PM Jules Irenge <jbi.octave@xxxxxxxxx> wrote:
>
> Sparse reports a warning at start_report()
>
> warning: context imbalance in start_report() - wrong count at exit
>
> The root cause is a missing annotation at start_report()
>
> Add the missing annotation __acquires(&report_lock)
>
> Signed-off-by: Jules Irenge <jbi.octave@xxxxxxxxx>
Acked-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
> ---
> mm/kasan/report.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/kasan/report.c b/mm/kasan/report.c
> index 5ef9f24f566b..5451624c4e09 100644
> --- a/mm/kasan/report.c
> +++ b/mm/kasan/report.c
> @@ -77,7 +77,7 @@ static void print_error_description(struct kasan_access_info *info)
>
> static DEFINE_SPINLOCK(report_lock);
>
> -static void start_report(unsigned long *flags)
> +static void start_report(unsigned long *flags) __acquires(&report_lock)
> {
> /*
> * Make sure we don't end up in loop.
> --
> 2.24.1
>
