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[v3,2/3] staging: Dynamically allocate struct station_info

Message ID 152593681722.16852.2696052770562763059.stgit@alrua-kau (mailing list archive)
State Rejected
Delegated to: Johannes Berg
Headers show

Commit Message

Toke Høiland-Jørgensen May 10, 2018, 7:20 a.m. UTC 
Since the addition of the TXQ stats to cfg80211, the station_info struct
has grown to be quite large, which results in warnings when allocated on
the stack. Fix the affected places to do dynamic allocations instead.

This patch applies the fix to the rtl8723bs driver in staging while a
separate patch fixes the drivers in the main tree.

Fixes: 52539ca89f36 ("cfg80211: Expose TXQ stats and parameters to userspace")
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
---
 drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c |   16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)
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Patch

diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
index 46bc2e512557..1ffc8c9ada52 100644
--- a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
+++ b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
@@ -2431,17 +2431,23 @@  void rtw_cfg80211_indicate_sta_assoc(struct adapter *padapter, u8 *pmgmt_frame,
 	DBG_871X(FUNC_ADPT_FMT"\n", FUNC_ADPT_ARG(padapter));
 
 	{
-		struct station_info sinfo;
+		struct station_info *sinfo;
 		u8 ie_offset;
 		if (GetFrameSubType(pmgmt_frame) == WIFI_ASSOCREQ)
 			ie_offset = _ASOCREQ_IE_OFFSET_;
 		else /*  WIFI_REASSOCREQ */
 			ie_offset = _REASOCREQ_IE_OFFSET_;
 
-		sinfo.filled = 0;
-		sinfo.assoc_req_ies = pmgmt_frame + WLAN_HDR_A3_LEN + ie_offset;
-		sinfo.assoc_req_ies_len = frame_len - WLAN_HDR_A3_LEN - ie_offset;
-		cfg80211_new_sta(ndev, GetAddr2Ptr(pmgmt_frame), &sinfo, GFP_ATOMIC);
+		sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
+		if (!sinfo)
+			return;
+
+		sinfo->filled = 0;
+		sinfo->assoc_req_ies = pmgmt_frame + WLAN_HDR_A3_LEN + ie_offset;
+		sinfo->assoc_req_ies_len = frame_len - WLAN_HDR_A3_LEN - ie_offset;
+		cfg80211_new_sta(ndev, GetAddr2Ptr(pmgmt_frame), sinfo, GFP_ATOMIC);
+
+		kfree(sinfo);
 	}
 }