From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 14B4B2F9480; Tue, 17 Jun 2025 16:20:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750177225; cv=none; b=UTtm6KdnyUpnWukbxF55eoQGfxherLd/5yQEu5gjeR2AA3cefgxI0HySU992GIjQDK54PDFxVSb0tqgBvFeEJAUiXNe1SFSzA8zfB3cwQoYseM7+0QYfSSqAUnjz8GirpG3WvVzEgavoKoMfkBaCmYeWmx54/PdYH9x0yYYQWH8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750177225; c=relaxed/simple; bh=GqcvXIVEM9pKVa3luqBtOQu4JrW4X/dZuSfkrARZ3w4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=o2nZIHWX8k3uMiJTjcuAG3mKi51V8N8Vc7A5l7oZoQr8W3jwt69n3A3D3KVovAEQpng10DFh0RbYQUQhxAX8ehmWp+oarUKmYgKqRH6NfTijKX93Jxe3EG/JoebdVgGkTzn59lMglt7FPG3XPpRJ0Ja0IoxesBBPcxtivequuJQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=AiOQPjQj; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="AiOQPjQj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71561C4CEE3; Tue, 17 Jun 2025 16:20:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750177224; bh=GqcvXIVEM9pKVa3luqBtOQu4JrW4X/dZuSfkrARZ3w4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AiOQPjQjd1XaahS3Untjwr/43qFNjuafzkuINFklnRUjf1BBNtY/5zFXFgoUQlP78 bP/41ZIhD9ScSV3eYM0+BKKVxdBfD84oZny3L0M/4diptolPt9tEcJLf7L73rV9kfw vNT4N2supKhseZ5xeFlYePRU9gI3NBewI71ap0qo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Rajat Soni , Raj Kumar Bhagat , Jeff Johnson , Sasha Levin Subject: [PATCH 6.15 274/780] wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event Date: Tue, 17 Jun 2025 17:19:42 +0200 Message-ID: <20250617152502.626957947@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250617152451.485330293@linuxfoundation.org> References: <20250617152451.485330293@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Rajat Soni [ Upstream commit 89142d34d5602c7447827beb181fa06eb08b9d5c ] Currently, in ath12k_service_ready_ext_event(), svc_rdy_ext.mac_phy_caps is not freed in the failure case, causing a memory leak. The following trace is observed in kmemleak: unreferenced object 0xffff8b3eb5789c00 (size 1024): comm "softirq", pid 0, jiffies 4294942577 hex dump (first 32 bytes): 00 00 00 00 01 00 00 00 00 00 00 00 7b 00 00 10 ............{... 01 00 00 00 00 00 00 00 01 00 00 00 1f 38 00 00 .............8.. backtrace (crc 44e1c357): __kmalloc_noprof+0x30b/0x410 ath12k_wmi_mac_phy_caps_parse+0x84/0x100 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_wmi_svc_rdy_ext_parse+0x308/0x4c0 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_service_ready_ext_event.isra.0+0x44/0xd0 [ath12k] ath12k_wmi_op_rx+0x2eb/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 Free svc_rdy_ext.mac_phy_caps in the error case to fix this memory leak. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1 Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices") Signed-off-by: Rajat Soni Signed-off-by: Raj Kumar Bhagat Link: https://patch.msgid.link/20250430-wmi-mem-leak-v1-1-fcc9b49c2ddc@quicinc.com Signed-off-by: Jeff Johnson Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath12k/wmi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c index d0705880cd3c9..fe50c3d3cb820 100644 --- a/drivers/net/wireless/ath/ath12k/wmi.c +++ b/drivers/net/wireless/ath/ath12k/wmi.c @@ -4601,6 +4601,7 @@ static int ath12k_service_ready_ext_event(struct ath12k_base *ab, return 0; err: + kfree(svc_rdy_ext.mac_phy_caps); ath12k_wmi_free_dbring_caps(ab); return ret; } -- 2.39.5