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The object "ax25_dev" is managed by reference counting. Thus it should not be directly released by kfree(), replace with ax25_dev_put(). Fixes: d01ffb9eee4a ("ax25: add refcount in ax25_dev to avoid UAF bugs") Suggested-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Duoming Zhou <duoming@zju.edu.cn> Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://lore.kernel.org/r/20240530051733.11416-1-duoming@zju.edu.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org>