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    ath6kl: Fix system freeze under heavy data load · 94e532d1
    Vasanthakumar Thiagarajan 提交于
    Patch "ath6kl: Fix buffer alignment for scatter-gather write" does
    memmove for a length (scat_req->scat_list[i].len) which is not the
    actual length of data that is suppossed to be moved. The right
    lengh is packet->act_len + HTC_HDR_LENGTH. Using wrong length
    for data move during buffer alignment causes system freeze after
    the following WARN_ON and sometimes target assert.
    
    WARNING: at drivers/net/wireless/ath/ath6kl/main.c:771 ath6k_credit_distribute+0x196/0x1a0
     [<ffffffffa051cf5f>] ath6kl_htc_rxmsg_pending_handler+0x83f/0xe00 [ath6kl]
     [<ffffffff8104a743>] ? __wake_up+0x53/0x70
     [<ffffffffa0518b18>] ath6kldev_intr_bh_handler+0x188/0x650 [ath6kl]
     [<ffffffffa052d316>] ath6kl_sdio_irq_handler+0x36/0x80 [ath6kl]
     [<ffffffff81492b3c>] sdio_irq_thread+0xfc/0x360
     [<ffffffff81051c52>] ? default_wake_function+0x12/0x20
     [<ffffffff81492a40>] ? sdio_claim_irq+0x220/0x220
     [<ffffffff81080c36>] kthread+0x96/0xa0
     [<ffffffff815b9fb4>] kernel_thread_helper+0x4/0x10
     [<ffffffff81080ba0>] ? kthread_worker_fn+0x190/0x190
     [<ffffffff815b9fb0>] ? gs_change+0x13/0x13
    Signed-off-by: NVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
    Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>
    94e532d1
txrx.c 34.0 KB