[PATCH] ath10k: fix kernel panic, move arvifs list head init before htt init

Valo, Kalle kvalo at qca.qualcomm.com
Fri May 6 11:09:58 PDT 2016

<akolli at qti.qualcomm.com> writes:

> From: Anilkumar Kolli <akolli at qti.qualcomm.com>
> It is observed that while loading and unloading ath10k modules
> in an infinite loop, before ath10k_core_start() completion HTT
> rx frames are received, while processing these frames,
> dereferencing the arvifs list code is getting hit before
> initilizing the arvifs list, causing a kernel panic.
> This patch initilizes the arvifs list before initilizing htt.
> Fixes the below issue:
>  [<bf88b058>] (ath10k_htt_rx_pktlog_completion_handler+0x278/0xd08 [ath10k_core])
>  [<bf88b058>] (ath10k_htt_rx_pktlog_completion_handler [ath10k_core])
>  [<bf88c0dc>] (ath10k_htt_txrx_compl_task+0x5f4/0xeb0 [ath10k_core])
>  [<bf88c0dc>] (ath10k_htt_txrx_compl_task [ath10k_core])
>  [<c0234100>] (tasklet_action+0x8c/0xec)
>  [<c0234100>] (tasklet_action)
>  [<c02337c0>] (__do_softirq+0xf8/0x228)
>  [<c02337c0>] (__do_softirq)  [<c0233920>] (run_ksoftirqd+0x30/0x90)
>  Code: e5954ad8 e2899008 e1540009 0a00000d (e5943008)
>  ---[ end trace 71de5c2e011dbf56 ]---
>  Kernel panic - not syncing: Fatal exception in interrupt
> Fixes: 500ff9f9389d ("ath10k: implement chanctx API")
> Cc: stable at vger.kernel.org
> Signed-off-by: Anilkumar Kolli <akolli at qti.qualcomm.com>

Applied, thanks.

Kalle Valo

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