On Tue, Dec 17, 2024 at 03:55:38PM +0800, Ma Ke wrote:
The reference count of the device incremented in device_initialize() is not decremented when device_add() fails. Add a put_device() call before returning from the function to decrement reference count for cleanup. Or it could cause memory leak.
As comment of device_add() says, if device_add() succeeds, you should call device_del() when you want to get rid of it. If device_add() has not succeeded, use only put_device() to drop the reference count.
Found by code review.
Cc: stable@vger.kernel.org
I slightly rewrote commit message and dropped this stable@ tag.
Thanks
Fixes: c8e4c2397655 ("RDMA/srp: Rework the srp_add_port() error path") Signed-off-by: Ma Ke make_ruc2021@163.com
drivers/infiniband/ulp/srp/ib_srp.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 2916e77f589b..7289ae0b83ac 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -3978,7 +3978,6 @@ static struct srp_host *srp_add_port(struct srp_device *device, u32 port) return host; put_host:
- device_del(&host->dev); put_device(&host->dev); return NULL;
}
2.25.1