* [PATCH] staging: wfx: Fix a memory leak in 'wfx_upload_beacon'
@ 2019-11-01 17:21 Christophe JAILLET
2019-11-02 10:30 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Christophe JAILLET @ 2019-11-01 17:21 UTC (permalink / raw)
To: jerome.pouiller, gregkh
Cc: devel, Christophe JAILLET, kernel-janitors, linux-kernel
The current code is a no-op, because all it can do is 'dev_kfree_skb(NULL)'
Revert the test to free skb, if not NULL.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
This patch is purely speculative.
The 'if (...)' could also be removed completely if we refactor the code
and return directly at the beginning of the function.
Or the 'return -ENOMEM' should be 'err = -ENOMEM; goto done;' in order to
avoid a mixup of goto and direct return.
---
drivers/staging/wfx/sta.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index 688586e823c0..e14da8dce388 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -906,7 +906,7 @@ static int wfx_upload_beacon(struct wfx_vif *wvif)
wfx_fwd_probe_req(wvif, false);
done:
- if (!skb)
+ if (skb)
dev_kfree_skb(skb);
return ret;
}
--
2.20.1
_______________________________________________
devel mailing list
devel@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] staging: wfx: Fix a memory leak in 'wfx_upload_beacon'
2019-11-01 17:21 [PATCH] staging: wfx: Fix a memory leak in 'wfx_upload_beacon' Christophe JAILLET
@ 2019-11-02 10:30 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2019-11-02 10:30 UTC (permalink / raw)
To: Christophe JAILLET; +Cc: devel, kernel-janitors, linux-kernel
On Fri, Nov 01, 2019 at 06:21:51PM +0100, Christophe JAILLET wrote:
> The current code is a no-op, because all it can do is 'dev_kfree_skb(NULL)'
> Revert the test to free skb, if not NULL.
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> This patch is purely speculative.
>
> The 'if (...)' could also be removed completely if we refactor the code
> and return directly at the beginning of the function.
> Or the 'return -ENOMEM' should be 'err = -ENOMEM; goto done;' in order to
> avoid a mixup of goto and direct return.
> ---
> drivers/staging/wfx/sta.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
> index 688586e823c0..e14da8dce388 100644
> --- a/drivers/staging/wfx/sta.c
> +++ b/drivers/staging/wfx/sta.c
> @@ -906,7 +906,7 @@ static int wfx_upload_beacon(struct wfx_vif *wvif)
> wfx_fwd_probe_req(wvif, false);
>
> done:
> - if (!skb)
> + if (skb)
> dev_kfree_skb(skb);
Just remove the "if" check entirely, as dev_kfree_skb() can handle NULL
being passed to it.
thanks,
greg k-h
_______________________________________________
devel mailing list
devel@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2019-11-02 10:30 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-11-01 17:21 [PATCH] staging: wfx: Fix a memory leak in 'wfx_upload_beacon' Christophe JAILLET
2019-11-02 10:30 ` Greg KH
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).