linux-kernel - Re: [PATCH ath-next] wifi: ath12k: fix memory leak in WMI firmware stats

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Message-Id: <174767689082.2567051.3798725859514530074.b4-ty@oss.qualcomm.com>
Date: Mon, 19 May 2025 10:48:10 -0700
From: Jeff Johnson <jeff.johnson@....qualcomm.com>
To: Jeff Johnson <jjohnson@...nel.org>,
        Aditya Kumar Singh <aditya.kumar.singh@....qualcomm.com>,
        Rameshkumar Sundaram <rameshkumar.sundaram@....qualcomm.com>,
        Mahendran P <quic_mahep@...cinc.com>,
        Raj Kumar Bhagat <quic_rajkbhag@...cinc.com>
Cc: linux-wireless@...r.kernel.org, ath12k@...ts.infradead.org,
        linux-kernel@...r.kernel.org, P Praneesh <praneesh.p@....qualcomm.com>
Subject: Re: [PATCH ath-next] wifi: ath12k: fix memory leak in WMI firmware
 stats


On Wed, 07 May 2025 22:41:19 +0530, Raj Kumar Bhagat wrote:
> Memory allocated for firmware pdev, vdev and beacon statistics
> are not released during rmmod. Below kmemleak trace is seen for this
> memory leak:
> 
> unreferenced object 0xffff8e76aebdfa00 (size 256):
>   comm "softirq", pid 0, jiffies 4299272453
>   hex dump (first 32 bytes):
>     28 19 71 c3 76 8e ff ff 28 19 71 c3 76 8e ff ff  (.q.v...(.q.v...
>     9f ff ff ff f4 d4 03 00 aa 88 09 00 bd 40 23 00  .............@#.
>   backtrace (crc dfe1b440):
>     __kmalloc_cache_noprof+0x2b0/0x370
>     ath12k_wmi_tlv_fw_stats_data_parse.isra.0+0x44e/0x730 [ath12k]
>     ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k]
>     ath12k_update_stats_event+0x85/0x300 [ath12k]
>     ath12k_wmi_op_rx+0x624/0xd70 [ath12k]
>     ath12k_htc_rx_completion_handler+0x1f4/0x330 [ath12k]
>     ath12k_ce_recv_process_cb+0x218/0x300 [ath12k]
>     ath12k_pci_ce_workqueue+0x1b/0x30 [ath12k]
>     process_one_work+0x219/0x680
>     bh_worker+0x198/0x1f0
>     tasklet_action+0x13/0x30
>     handle_softirqs+0xca/0x460
>     __irq_exit_rcu+0xbe/0x110
>     irq_exit_rcu+0x9/0x30
>     common_interrupt+0xa7/0xc0
>     asm_common_interrupt+0x26/0x40
> 
> [...]

Applied, thanks!

[1/1] wifi: ath12k: fix memory leak in WMI firmware stats
      commit: 246eb353fbe9136ab3dd2ef979764a13984989e2

Best regards,
-- 
Jeff Johnson <jeff.johnson@....qualcomm.com>