Hello, On Sun, 2023-01-29 at 18:51 +0200, Leon Romanovsky wrote: > In netdev common pattern, extack pointer is forwarded to the drivers > to be filled with error message. However, the caller can easily > overwrite the filled message. > > Instead of adding multiple "if (!extack->_msg)" checks before any > NL_SET_ERR_MSG() call, which appears after call to the driver, let's > add new macro to common code. > > [1] https://lore.kernel.org/all/Y9Irgrgf3uxOjwUm@unreal > Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx> I'm sorry for nit-picking, but checkpatch complains the author (leon@xxxxxxxxxx) does not match the SoB tag. A v3 with a suitable From: tag should fix that. Thanks, Paolo