Re: [PATCH 1/9] um/drivers/vector_user: Delete unnecessary code in user_init_raw_fds()

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Thanks, well noted.

It still does not fix it completely though.

Re-reading the code it will leak a fd if the malloc for result fails. That return result; there should be inside the conditional falling back to cleanup if the alloc fails.

A.


On 03/11/18 15:16, SF Markus Elfring wrote:
From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Sun, 11 Mar 2018 11:36:18 +0100

* One condition check could never be reached with a non-null pointer
   at the end of this function. Thus remove the corresponding statement.

* Delete an initialisation for the local variable "result"
   which became unnecessary with this refactoring.

Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
  arch/um/drivers/vector_user.c | 4 +---
  1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/um/drivers/vector_user.c b/arch/um/drivers/vector_user.c
index 4291f1a5d342..d6a6207d4061 100644
--- a/arch/um/drivers/vector_user.c
+++ b/arch/um/drivers/vector_user.c
@@ -211,7 +211,7 @@ static struct vector_fds *user_init_raw_fds(struct arglist *ifspec)
  	struct sockaddr_ll sock;
  	int err = -ENOMEM;
  	char *iface;
-	struct vector_fds *result = NULL;
+	struct vector_fds *result;
  	int optval = 1;
@@ -276,8 +276,6 @@ static struct vector_fds *user_init_raw_fds(struct arglist *ifspec)
  		os_close_file(rxfd);
  	if (txfd >= 0)
  		os_close_file(txfd);
-	if (result != NULL)
-		kfree(result);
  	return NULL;
  }

--
Anton R. Ivanov

Cambridge Greys Limited, England and Wales company No 10273661
http://www.cambridgegreys.com/

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