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 EC9754195C0; Thu, 20 Aug 2026 16:40:31 +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=1787244033; cv=none; b=pHXnq3WZ28WYemg1Q3P7IHZ0L3rSnzAbdUPplghfK0CUvDT108X0ibQh+YqunhN4S5/TuJ801X76xD6kQWBuretRWJybcHKlt6Wm9hD3RK92aNWLmE3DIofzA+EVOPNBpTzmB8ItqmAMaVVhmT5MHOeo4Ww7BODP9Y0DqUGfxys= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787244033; c=relaxed/simple; bh=7UYdIFqpcNA8/XGZaabm7SwxhZJ/XAs1kW8V2jIiYME=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EerjzEZeXrXrddRv5XyR09hiA6l9QeRciRraoqcWkVRh+2g/S9Tk+aemjLR+IniovJXHA4iYnxtFtMXzBSeA3kbmtLKFSQTCYv8kxIQ37/BsxujXZuf8R8pNjQVniAkBECl6vBcF6TD/fPRXEM5zA+P3rG3lM85RwA6skN08IAQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=AI1qtSOT; 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="AI1qtSOT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 551511F000E9; Thu, 20 Aug 2026 16:40:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1787244031; bh=xhfqLVWk4h3oSkL01AJq2OvEHKFbzuk249/3iQd45ck=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=AI1qtSOTesojhtEcY8KPbNC/BWJvpKAKHtBZa9VPUORaQ8pK0oxzb03KIcwk2UlIO MEpVPQAdCAa6o3XrSQbV35Xet3rGPBvF11E7Q2e6hcP1LswPp0SC+sV/ybgxO71p/x 9WfW2S36cCD/eifMQOVLO3h4JsxNxtltkA7V6C78= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhan Xusheng , Ulf Hansson Subject: [PATCH 5.10 029/235] mmc: omap_hsmmc: fix busy_timeout overflow in ns conversion on 32-bit Date: Thu, 20 Aug 2026 16:54:25 +0200 Message-ID: <20260820145217.321188842@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260820145216.426568665@linuxfoundation.org> References: <20260820145216.426568665@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 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Zhan Xusheng commit f64ea900e4bda3055ef24a2c906f8d049cf1c3bd upstream. omap_hsmmc_prepare_data() converts the command busy timeout to nanoseconds with: timeout = req->cmd->busy_timeout * NSEC_PER_MSEC; busy_timeout is an unsigned int (milliseconds) and timeout is a u64, but NSEC_PER_MSEC is 1000000L. On 32-bit builds the multiplication is performed in 32-bit arithmetic and wraps for busy_timeout values above ~4294 ms, before the result is assigned to the u64. The driver does not set mmc->max_busy_timeout, so the core does not cap the busy timeout, and commands such as erase or SANITIZE (MMC_SANITIZE_TIMEOUT_MS is 240000 ms) can pass a busy_timeout far larger than 4294 ms. The wrapped, much smaller ns value is then programmed via set_data_timeout(), so the data timeout is set too short and the operation can time out prematurely. Cast busy_timeout to u64 before the multiplication so the conversion is done in 64-bit arithmetic. Fixes: 8cc9a3e73de1 ("mmc: host: omap_hsmmc: use generic_cmd6_time to program timeout value for CMD6") Cc: stable@vger.kernel.org Signed-off-by: Zhan Xusheng Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/omap_hsmmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1363,7 +1363,7 @@ omap_hsmmc_prepare_data(struct omap_hsmm if (req->data == NULL) { OMAP_HSMMC_WRITE(host->base, BLK, 0); if (req->cmd->flags & MMC_RSP_BUSY) { - timeout = req->cmd->busy_timeout * NSEC_PER_MSEC; + timeout = (u64)req->cmd->busy_timeout * NSEC_PER_MSEC; /* * Set an arbitrary 100ms data timeout for commands with