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 634FC30CB22; Wed, 17 Sep 2025 12:58:28 +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=1758113908; cv=none; b=lzLejsDtpEi9MKP4ppGfaZg2h8CRkqGkgV7PXO34uHxtQM175+BWCEReSrEoVr911nZdPU6DLhopr3P4Kmw6g2WPNSvwqFxlo6EBUA1LW+NNVHndXQfdqgG2DiQf1ahHi8Ka9A+PBGZztlM7PVgAPXv9wffPLwuBICZhm7dGuWY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758113908; c=relaxed/simple; bh=KHEuE5/QisbmJURde2GkKIlcnJxLTtnzPcINmmg/x8E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JVEcNj81CoN+t6vgFkmxid8x28RofhnDmNPvYtLhIpBdjoj9oFsouwMKqRDuOxTxE0ezAe5xnGubmxlAYQZov2GpyklXqRUrsbstWu0a+XgtZmKAYEc493feuhyRLRkR3Wa3F35qdoLBStGZQRkN+V/ILFbIfMiMAwVEnH1EnMk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=0hiYktQ2; 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="0hiYktQ2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D4D98C4CEF0; Wed, 17 Sep 2025 12:58:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1758113908; bh=KHEuE5/QisbmJURde2GkKIlcnJxLTtnzPcINmmg/x8E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0hiYktQ25jhAidjUgOZvbfWotLahuL4hRtbaSELLCSWSVZWAHLX8ZGEAcrBgNeMgZ WUuuJVF8tIp4IaaYcACJqBxeF3ydBryCunZOa0NNiEjHb0SXpjnm42qftCTuzXCPhx luqlt93KfUwrfJGRMkGAYeZ/tuYqUmGXp8jUrvgE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Wang <00107082@163.com>, Michal Pecio , Mathias Nyman Subject: [PATCH 6.6 090/101] xhci: fix memory leak regression when freeing xhci vdev devices depth first Date: Wed, 17 Sep 2025 14:35:13 +0200 Message-ID: <20250917123339.015276311@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250917123336.863698492@linuxfoundation.org> References: <20250917123336.863698492@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mathias Nyman commit edcbe06453ddfde21f6aa763f7cab655f26133cc upstream. Suspend-resume cycle test revealed a memory leak in 6.17-rc3 Turns out the slot_id race fix changes accidentally ends up calling xhci_free_virt_device() with an incorrect vdev parameter. The vdev variable was reused for temporary purposes right before calling xhci_free_virt_device(). Fix this by passing the correct vdev parameter. The slot_id race fix that caused this regression was targeted for stable, so this needs to be applied there as well. Fixes: 2eb03376151b ("usb: xhci: Fix slot_id resource race conflict") Reported-by: David Wang <00107082@163.com> Closes: https://lore.kernel.org/linux-usb/20250829181354.4450-1-00107082@163.com Suggested-by: Michal Pecio Suggested-by: David Wang <00107082@163.com> Cc: stable@vger.kernel.org Tested-by: David Wang <00107082@163.com> Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20250902105306.877476-4-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -945,7 +945,7 @@ static void xhci_free_virt_devices_depth out: /* we are now at a leaf device */ xhci_debugfs_remove_slot(xhci, slot_id); - xhci_free_virt_device(xhci, vdev, slot_id); + xhci_free_virt_device(xhci, xhci->devs[slot_id], slot_id); } int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,