From: Kalle Valo <kvalo@codeaurora.org>
To: Venkateswara Rao Naralasetty <vnaralas@codeaurora.org>
Cc: Vikas Patel <vikpatel@codeaurora.org>,
linux-wireless@vger.kernel.org, ath11k@lists.infradead.org
Subject: Re: [PATCH] ath11k: Fixing dangling pointer issue upon peer delete failure
Date: Tue, 11 Feb 2020 18:35:24 +0000 (UTC) [thread overview]
Message-ID: <20200211183524.0F502C433A2@smtp.codeaurora.org> (raw)
In-Reply-To: <1580891515-15054-1-git-send-email-vnaralas@codeaurora.org>
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
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prev parent reply other threads:[~2020-02-11 18:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-05 8:31 [PATCH] ath11k: Fixing dangling pointer issue upon peer delete failure Venkateswara Rao Naralasetty
2020-02-05 8:31 ` Venkateswara Rao Naralasetty
2020-02-11 18:35 ` Kalle Valo
2020-02-11 18:35 ` Kalle Valo [this message]
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