Messages in this thread Patch in this message | | | Date | Tue, 24 Aug 2010 15:44:42 -0700 | From | Greg KH <> | Subject | [037/114] ath9k_htc: fix panic on packet injection using airbase-ng tool. |
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2.6.35-stable review patch. If anyone has any objections, please let us know.
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From: Rajkumar Manoharan <rmanoharan@atheros.com>
commit da93f10684bfba2983a70c10b5d417232b6a5245 upstream.
This should fix the oops which occurs during the packet injection on monitor interface.
EIP is at ath9k_htc_tx_start+0x69/0x220 [ath9k_htc] [<f84dc8ea>] ? invoke_tx_handlers+0xa5a/0xee0 [mac80211] [<f82c84f4>] ? ath9k_htc_tx+0x44/0xe0 [ath9k_htc] [<f84db7b8>] ? __ieee80211_tx+0xf8/0x190 [mac80211] [<f84dce0d>] ? ieee80211_tx+0x9d/0x1a0 [mac80211] [<f84dcfac>] ? ieee80211_xmit+0x9c/0x1c0 [mac80211] [<f84dd1b5>] ? ieee80211_monitor_start_xmit+0x85/0xb0 [mac80211] [<c04c30cd>] ? dev_hard_start_xmit+0x1ad/0x210 [<c04b97c2>] ? __alloc_skb+0x52/0x130 [<c04d7cd5>] ? sch_direct_xmit+0x105/0x170 [<c04c5e9f>] ? dev_queue_xmit+0x37f/0x4b0 [<c0567e1e>] ? packet_snd+0x21e/0x250 [<c05684a2>] ? packet_sendmsg+0x32/0x40 [<c04b4c63>] ? sock_aio_write+0x113/0x130 [<c0207934>] ? do_sync_write+0xc4/0x100 [<c0167740>] ? autoremove_wake_function+0x0/0x50 [<c02f4414>] ? security_file_permission+0x14/0x20 [<c0207ad4>] ? rw_verify_area+0x64/0xe0 [<c01e6458>] ? handle_mm_fault+0x338/0x390 [<c0207cd5>] ? vfs_write+0x185/0x1a0 [<c058db20>] ? do_page_fault+0x160/0x3a0 [<c0208512>] ? sys_write+0x42/0x70 [<c01033ec>] ? syscall_call+0x7/0xb
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/net/wireless/ath/ath9k/htc_drv_txrx.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
--- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c @@ -68,18 +68,23 @@ int ath9k_htc_tx_start(struct ath9k_htc_ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); struct ieee80211_sta *sta = tx_info->control.sta; struct ath9k_htc_sta *ista; - struct ath9k_htc_vif *avp; struct ath9k_htc_tx_ctl tx_ctl; enum htc_endpoint_id epid; u16 qnum, hw_qnum; __le16 fc; u8 *tx_fhdr; - u8 sta_idx; + u8 sta_idx, vif_idx; hdr = (struct ieee80211_hdr *) skb->data; fc = hdr->frame_control; - avp = (struct ath9k_htc_vif *) tx_info->control.vif->drv_priv; + if (tx_info->control.vif && + (struct ath9k_htc_vif *) tx_info->control.vif->drv_priv) + vif_idx = ((struct ath9k_htc_vif *) + tx_info->control.vif->drv_priv)->index; + else + vif_idx = priv->nvifs; + if (sta) { ista = (struct ath9k_htc_sta *) sta->drv_priv; sta_idx = ista->index; @@ -96,7 +101,7 @@ int ath9k_htc_tx_start(struct ath9k_htc_ memset(&tx_hdr, 0, sizeof(struct tx_frame_hdr)); tx_hdr.node_idx = sta_idx; - tx_hdr.vif_idx = avp->index; + tx_hdr.vif_idx = vif_idx; if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) { tx_ctl.type = ATH9K_HTC_AMPDU; @@ -156,7 +161,7 @@ int ath9k_htc_tx_start(struct ath9k_htc_ tx_ctl.type = ATH9K_HTC_NORMAL; mgmt_hdr.node_idx = sta_idx; - mgmt_hdr.vif_idx = avp->index; + mgmt_hdr.vif_idx = vif_idx; mgmt_hdr.tidno = 0; mgmt_hdr.flags = 0;
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