Re: [PATCH 1/1] regmap: fix range checks

On Thu, 29 Sept 2022 at 16:27, Heinrich Schuchardt xypron.glpk@gmx.de wrote:

On the 32bit ARM sandbox 'dm ut dm_test_devm_regmap' fails with an abort. This is due to incorrect range checks.

On 32-bit systems the size of size_t and int is both 32 bit. The expression (offset + val_len) is bound to overflow if offset == -1. Add an overflow check.

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de

drivers/core/regmap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Simon Glass sjg@chromium.org