From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 4C053282F30; Thu, 2 Jul 2026 16:28:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783009721; cv=none; b=qh6uIuvUp71B1Y6WPClbJuISsELBsnfrzqqfUV8vKIjX/WabQTPQl8mi/2pUPO45HWZ6sOTwPPg6XgtIl2woxBZNNCNTz/OuBMBSfuc2uMyOSfBw4jQVnW4tHBO+QdONFIhmUR6VMOhfTR6gecDuO/JSpRlEvDe448suaIheYsg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783009721; c=relaxed/simple; bh=lCaYPJC18GBu8iI0ts2AXey7c+02vCD08Zon6Cf7BEU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=C99c5wIaZXl7jW72rYwx00tMjlQECUYvPKCc7kmNznh9iUh2jla5QXP7wDn2pjQqWCGAorObzk5Z+Vx5a3NuEwNd6w7JjjbyfW6yysCuhvbPc46i2t/kC9kGKLZBxqnzPLq7cxEVaFcy20y77Dv/8s3HZugzGF3gSo1WyyZCjq8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SqCYM9hg; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="SqCYM9hg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 115A31F00A3A; Thu, 2 Jul 2026 16:28:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1783009717; bh=6qwVzb4wOA1FV1XCVwPekkJP3DKjo67ptiuT79YCIDg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=SqCYM9hg6wIznj7bXtFiO8Z7sB4/avQ11vbnEkdm+FMzcAgem+RdCiXCToRY/tZDq 52c1dxmMHoch5ebvkuL42cUdT0I/+FeMPUGSTt2zSjaFz6GyOdc+ohFGwi5Dt2szsr AU10iiz9mcifHTETiyoNU1SeuIEiNXN2pjoshMc4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jose Ignacio Tornos Martinez , Baochen Qiang , Rameshkumar Sundaram , Jeff Johnson Subject: [PATCH 5.15 61/95] wifi: ath11k: fix warning when unbinding Date: Thu, 2 Jul 2026 18:20:04 +0200 Message-ID: <20260702155110.493538040@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260702155109.196223802@linuxfoundation.org> References: <20260702155109.196223802@linuxfoundation.org> User-Agent: quilt/0.69 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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jose Ignacio Tornos Martinez commit 8b7a26b6681922a38cd5a7829ace61f8e54df9b7 upstream. If there is an error during some initialization related to firmware, the buffers dp->tx_ring[i].tx_status are released. However this is released again when the device is unbinded (ath11k_pci), and we get: WARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90 Call Trace: free_large_kmalloc ath11k_dp_free ath11k_core_deinit ath11k_pci_remove ... The issue is always reproducible from a VM because the MSI addressing initialization is failing. In order to fix the issue, just set the buffers to NULL after releasing in order to avoid the double free. Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices") Cc: stable@vger.kernel.org Signed-off-by: Jose Ignacio Tornos Martinez Reviewed-by: Baochen Qiang Reviewed-by: Rameshkumar Sundaram Link: https://patch.msgid.link/20260420110130.509670-1-jtornosm@redhat.com Signed-off-by: Jeff Johnson Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/ath/ath11k/dp.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/wireless/ath/ath11k/dp.c +++ b/drivers/net/wireless/ath/ath11k/dp.c @@ -1003,6 +1003,7 @@ void ath11k_dp_free(struct ath11k_base * idr_destroy(&dp->tx_ring[i].txbuf_idr); spin_unlock_bh(&dp->tx_ring[i].tx_idr_lock); kfree(dp->tx_ring[i].tx_status); + dp->tx_ring[i].tx_status = NULL; } /* Deinit any SOC level resource */