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Subject: Re: [PATCH] ath11k: Fixing dangling pointer issue upon peer delete
 failure
From:   Kalle Valo <kvalo@codeaurora.org>
In-Reply-To: <1580891515-15054-1-git-send-email-vnaralas@codeaurora.org>
References: <1580891515-15054-1-git-send-email-vnaralas@codeaurora.org>
To:     Venkateswara Rao Naralasetty <vnaralas@codeaurora.org>
Cc:     ath11k@lists.infradead.org, linux-wireless@vger.kernel.org,
        Vikas Patel <vikpatel@codeaurora.org>,
        Venkateswara Naralasetty <vnaralas@codeaurora.org>
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Message-Id: <20200211183523.D5117C433A2@smtp.codeaurora.org>
Date:   Tue, 11 Feb 2020 18:35:23 +0000 (UTC)
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Venkateswara Rao Naralasetty <vnaralas@codeaurora.org> wrote:

> When there is WMI command failure, 'peer->sta' was not getting
> cleaned up, and mac80211 frees the 'sta' memory, which is causing
> the below page fault.
> 
> Cleaning up the sta pointer in ath11k whenever peer delete command
> is sent.
> 
> Unable to handle kernel paging request at virtual address 200080000006a
> pgd = ffffffc02a774000
> [200080000006a] *pgd=0000000000000000, *pud=0000000000000000
> Internal error: Oops: 96000004 [#1] PREEMPT SMP
> .
> .
> .
> CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W       4.4.60 #1
> Hardware name: Qualcomm Technologies, Inc. IPQ807x/AP-HK01-C1 (DT)
> task: ffffffc00083c6d0 ti: ffffffc00083c6d0 task.ti: ffffffc00083c6d0
> PC is at ath11k_dp_rx_process_mon_status+0x114/0x4e0 [ath11k]
> LR is at ath11k_dp_rx_process_mon_status+0xe8/0x4e0 [ath11k]
> pc : [<ffffffbffcf8e544>] lr : [<ffffffbffcf8e518>] pstate: 60000145
> sp : ffffffc000833a30
> 
> Signed-off-by: Vikas Patel <vikpatel@codeaurora.org>
> Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org>
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

Patch applied to ath-next branch of ath.git, thanks.

58595c9874c6 ath11k: Fixing dangling pointer issue upon peer delete failure

-- 
https://patchwork.kernel.org/patch/11365881/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches