diff options
| author | Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com> | 2012-01-26 13:17:18 +0530 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2012-01-30 21:11:30 +0200 |
| commit | c86515412f0c364f2d45029b45d5909614087af3 (patch) | |
| tree | 6699fee75109397cc3cc3ebad26f68f5043e0ed9 /drivers/net/wireless/ath/ath6kl/txrx.c | |
| parent | 5f1127ffbae3029fde5dc1464ec3c26cdf34cb80 (diff) | |
| download | linux-c86515412f0c364f2d45029b45d5909614087af3.tar.bz2 | |
ath6kl: Fix kernel panic during rx aggregation
"ath6kl: Define a structure for connection specific aggregation information"
introduces this. In aggr_conn_init(), vif->aggr_cntxt is assigned to
aggr_conn->aggr_info, but vif->aggr_cntxt is not initialized at this
point, this would end up accessing an invalid pointer in aggregation
receive path. Fix this by passing the correct aggr_info to aggr_conn_init().
The panic trace would look like.
[<ffffffff8159e02e>] panic+0xa1/0x1c6
[<ffffffff8103773d>] ? kmsg_dump+0xfd/0x160
[<ffffffff815a2f6a>] oops_end+0xea/0xf0
[<ffffffff8102b95d>] no_context+0x11d/0x2d0
[<ffffffff8102bc5d>] __bad_area_nosemaphore+0x14d/0x230
[<ffffffff815a5c4d>] ? do_page_fault+0x30d/0x520
[<ffffffff8102bd53>] bad_area_nosemaphore+0x13/0x20
[<ffffffff815a5cfd>] do_page_fault+0x3bd/0x520
[<ffffffff8108bd60>] ? __lock_acquire+0x320/0x1680
[<ffffffff812e3a9d>] ? trace_hardirqs_off_thunk+0x3a/0x3c
[<ffffffff815a2385>] page_fault+0x25/0x30
[<ffffffffa0487a5f>] ? aggr_slice_amsdu+0xdf/0x170 [ath6kl_core]
[<ffffffffa0487bac>] aggr_deque_frms+0xbc/0x190 [ath6kl_core]
[<ffffffffa0488404>] ath6kl_rx+0x3e4/0xae0 [ath6kl_core]
[<ffffffffa047ae77>] ath6kl_htc_rxmsg_pending_handler+0x8b7/0xf10 [ath6kl_core]
[<ffffffffa00c82f0>] ? mmc_do_release_host+0x70/0x90 [mmc_core]
[<ffffffffa00c833a>] ? mmc_release_host+0x2a/0x50 [mmc_core]
[<ffffffffa04865c0>] ? ath6kl_alloc_amsdu_rxbuf+0x140/0x140 [ath6kl_core]
[<ffffffffa0477772>] ath6kl_hif_intr_bh_handler+0x362/0x510 [ath6kl_core]
[<ffffffffa01f1000>] ath6kl_sdio_irq_handler+0x60/0xb0 [ath6kl_sdio]
[<ffffffffa00d30bc>] sdio_irq_thread+0xec/0x320 [mmc_core]
[<ffffffffa00d2fd0>] ? sdio_claim_irq+0x220/0x220 [mmc_core]
[<ffffffffa00d2fd0>] ? sdio_claim_irq+0x220/0x220 [mmc_core]
[<ffffffff8105b21e>] kthread+0xbe/0xd0
[<ffffffff815ab574>] kernel_thread_helper+0x4/0x10
[<ffffffff815a2174>] ? retint_restore_args+0x13/0x13
[<ffffffff8105b160>] ? __init_kthread_worker+0x70/0x70
[<ffffffff815ab570>] ? gs_change+0x13/0x13
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/txrx.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath6kl/txrx.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/txrx.c b/drivers/net/wireless/ath/ath6kl/txrx.c index 62c12102e146..a3dc6943c7f7 100644 --- a/drivers/net/wireless/ath/ath6kl/txrx.c +++ b/drivers/net/wireless/ath/ath6kl/txrx.c @@ -1674,7 +1674,8 @@ void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid_mux, u16 seq_no, rxtid->aggr = true; } -void aggr_conn_init(struct ath6kl_vif *vif, struct aggr_info_conn *aggr_conn) +void aggr_conn_init(struct ath6kl_vif *vif, struct aggr_info *aggr_info, + struct aggr_info_conn *aggr_conn) { struct rxtid *rxtid; u8 i; @@ -1684,7 +1685,7 @@ void aggr_conn_init(struct ath6kl_vif *vif, struct aggr_info_conn *aggr_conn) init_timer(&aggr_conn->timer); aggr_conn->timer.function = aggr_timeout; aggr_conn->timer.data = (unsigned long) aggr_conn; - aggr_conn->aggr_info = vif->aggr_cntxt; + aggr_conn->aggr_info = aggr_info; aggr_conn->timer_scheduled = false; @@ -1716,7 +1717,7 @@ struct aggr_info *aggr_init(struct ath6kl_vif *vif) return NULL; } - aggr_conn_init(vif, p_aggr->aggr_conn); + aggr_conn_init(vif, p_aggr, p_aggr->aggr_conn); skb_queue_head_init(&p_aggr->rx_amsdu_freeq); ath6kl_alloc_netbufs(&p_aggr->rx_amsdu_freeq, AGGR_NUM_OF_FREE_NETBUFS); |