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 E77277DA95 for ; Mon, 21 Jul 2025 04:50:26 +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=1753073427; cv=none; b=aedSnNEdDH2KjGOEETlAdibWeFRy2h+VYTq3QD0C+LqG0Ff+FC0xPBP0jaYOTmwM6wwBIDsw9kziyVnaZg7G9KL8I+queexkXDbEq9FtxBDbHtXHGyNV1wRZPUHJKpG6gAQUdL7exEd9IBr8aFP3UHAzuktgv9cuMYbyrWUUEkc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753073427; c=relaxed/simple; bh=batdBLni3jQPyrFY8sGiRpU6/bixaDr8eZKCZQId5A4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=KTmRszQsKQ31tCh3J42GWvbn4qph/zzRtrrpOGomoAfDyb+heQVeM86urZSAXaJ1llHttOZkiG4YyhHUZzQF2lNQ1bHjk3UAZRLgTeHjOQepibHTRodagscG9ydebp3f2/7Y+ZL5FFGns1pVGKGvLQOvjBgAubeJ7mzh3txbv9o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gzvf8Tq+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gzvf8Tq+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9F0F9C4CEF1; Mon, 21 Jul 2025 04:50:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753073426; bh=batdBLni3jQPyrFY8sGiRpU6/bixaDr8eZKCZQId5A4=; h=From:To:Cc:Subject:Date:From; b=gzvf8Tq+KeTs2mMUv/5zpU51klY3AyjVDFh+Q81bD51uc+EdzgTAQAmAKQD9acpVU NArJNIb3EHxgIyT788SFrit/mYUGVosn8NetqUHkqxaWctCjc1Qp9vny8Tyb8N4TNv vx3OsvZLUgFZEnTcAhsfz6btRyc8k9Yj4KLLXE6veQh7T/jBBNoTlABVyNOIhy6JbZ TzuFbcvIhhapz8ozvkSiBR0134x6Ep2VA8KGOpuYh1cfvTnNf9amP+HUTS4KYf8DtH 2ougWB2GQeI5Zs+6NyMnhrp57RyuKBJRZ1KFoQfWKT96qz1h4zSfjpBAk7Bi+ecRhf Kd4Kgzi2yIjKQ== From: Tzung-Bi Shih To: bleung@chromium.org Cc: tzungbi@kernel.org, dawidn@google.com, chrome-platform@lists.linux.dev Subject: [PATCH 0/2] platform/chrome: cros_ec_chardev: To be ec_dev registered-aware Date: Mon, 21 Jul 2025 04:50:07 +0000 Message-ID: <20250721045009.2737376-1-tzungbi@kernel.org> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Userland programs may wait forever for MKBP events after the underlying struct cros_ec_device has been unregistered. The series tries to return appropriate errors when detecting such possibilities. The 1st patch is a clean-up. The 2nd patch fixes the issue via checking the ec_dev's availability in fops. The series applies after "[v3,0/8] platform/chrome: cros_ec_chardev: Fix a possible UAF" (https://patchwork.kernel.org/project/chrome-platform/cover/20250721044456.2736300-1-tzungbi@kernel.org/). Tzung-Bi Shih (2): platform/chrome: cros_ec_chardev: Don't use wait queue's lock platform/chrome: cros_ec_chardev: Check ec_dev's availability in fops drivers/platform/chrome/cros_ec_chardev.c | 49 +++++++++++++---------- 1 file changed, 28 insertions(+), 21 deletions(-) -- 2.50.0.727.gbf7dc18ff4-goog