mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-10-01 05:35:54 +00:00
61 lines
1.8 KiB
Diff
61 lines
1.8 KiB
Diff
From 83cf9f50cda5ab3f99055242bebbcb26d96319ad Mon Sep 17 00:00:00 2001
|
|
From: Jack Pham <jackp@codeaurora.org>
|
|
Date: Wed, 6 Aug 2014 19:52:49 -0700
|
|
Subject: [PATCH] usb: gadget: qc_rndis: Properly handle rndis_ipa_init failure
|
|
|
|
Currently if rndis_ipa_init() fails port->func doesn't get
|
|
removed from the configuration list, and will lead to a
|
|
use-after-free when the calling function later tries to remove
|
|
the function. Fix this to handle the failure gracefully and only
|
|
call usb_add_function() if it succeeded.
|
|
|
|
Bug: 35136547
|
|
Change-Id: I2ad0dfeaea6b5b6ba1e47aad564ac052348677e6
|
|
Signed-off-by: Jack Pham <jackp@codeaurora.org>
|
|
---
|
|
drivers/usb/gadget/f_qc_rndis.c | 22 ++++++++++++----------
|
|
1 file changed, 12 insertions(+), 10 deletions(-)
|
|
|
|
diff --git a/drivers/usb/gadget/f_qc_rndis.c b/drivers/usb/gadget/f_qc_rndis.c
|
|
index dfa3dd6ed18dd..819bde5072a39 100644
|
|
--- a/drivers/usb/gadget/f_qc_rndis.c
|
|
+++ b/drivers/usb/gadget/f_qc_rndis.c
|
|
@@ -1206,25 +1206,27 @@ rndis_qc_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
|
|
|
|
_rndis_qc = rndis;
|
|
|
|
+ if (rndis->xport == USB_GADGET_XPORT_BAM2BAM_IPA) {
|
|
+ status = rndis_ipa_init(&rndis_ipa_params);
|
|
+ if (status) {
|
|
+ pr_err("%s: failed to init rndis_ipa\n", __func__);
|
|
+ goto fail;
|
|
+ }
|
|
+ }
|
|
+
|
|
status = usb_add_function(c, &rndis->port.func);
|
|
if (status) {
|
|
- kfree(rndis);
|
|
+ if (rndis->xport == USB_GADGET_XPORT_BAM2BAM_IPA)
|
|
+ rndis_ipa_cleanup(rndis_ipa_params.private);
|
|
goto fail;
|
|
}
|
|
|
|
if (rndis->xport != USB_GADGET_XPORT_BAM2BAM_IPA)
|
|
return status;
|
|
|
|
- status = rndis_ipa_init(&rndis_ipa_params);
|
|
- if (status) {
|
|
- pr_err("%s: failed to initialize rndis_ipa\n", __func__);
|
|
- kfree(rndis);
|
|
- goto fail;
|
|
- } else {
|
|
- pr_debug("%s: rndis_ipa successful created\n", __func__);
|
|
- return status;
|
|
- }
|
|
fail:
|
|
+ kfree(rndis);
|
|
+ _rndis_qc = NULL;
|
|
rndis_exit();
|
|
return status;
|
|
}
|