lkml.org 
[lkml]   [2022]   [Dec]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] net: brcmfmac: fix potential resource leak in brcmf_usb_probe_phase2()
Date
Jianglei Nie <niejianglei2021@163.com> writes:

> brcmf_usb_probe_phase2() allocates resource for dev with brcmf_alloc().
> The related resource should be released when the function gets some error.
> But when brcmf_attach() fails, relevant resource is not released, which
> will lead to resource leak.
>
> Fix it by calling brcmf_free() when brcmf_attach() fails.
>
> Signed-off-by: Jianglei Nie <niejianglei2021@163.com>
> ---
> drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
> index 85e18fb9c497..5d8c12b2c4d7 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
> @@ -1215,6 +1215,7 @@ static void brcmf_usb_probe_phase2(struct device *dev, int ret,
> return;
> error:
> brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret);
> + brcmf_free(devinfo->dev);
> complete(&devinfo->dev_init_done);
> device_release_driver(dev);
> }

This doesn't look right. Now we would call brfmf_free() even before
brcmf_alloc() is called.

--
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

\
 
 \ /
  Last update: 2023-03-26 23:18    [W:0.135 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site