From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f172.google.com (mail-pg1-f172.google.com [209.85.215.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BD6523093D8 for ; Thu, 7 May 2026 11:04:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778151852; cv=none; b=SHHEIAaW3NSIdfn05PowHQp8D/nkOa7gdO+NQ2phO919e/Yya7YUFEVC2c8HPJu6bQAXsSxY9xwHdKYOiU8uQToGNSfyAQnOJZ0irfGrki11eM3tAAxbYWVMmtpY3wmeR6Gn0Vi8B1mSOvshPoHTm1tbU1xSf8Woj1R+4Yz0HN8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778151852; c=relaxed/simple; bh=muy4ln8oosRMTLMN8Ir5RlGdNWkfxHNe7px5ZbQvV90=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=LsSjg1FoG5u+RsSiJby8fnpyXJ7HljedBnQJevlS1dnuDZVN/kPXpMy41/0UT6rNfAFvLAmRe7tneTzgy0sBXHHaTVHBnBMXOB8rJCsNQ0wcY0gPq1VUX3MrxASCMV6EBJ1FbKeE/RMZNTtxuE94hhcmE9cowVRmc7Myu5xK44w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=lg6aOoCs; arc=none smtp.client-ip=209.85.215.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="lg6aOoCs" Received: by mail-pg1-f172.google.com with SMTP id 41be03b00d2f7-c801b30188dso260911a12.3 for ; Thu, 07 May 2026 04:04:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1778151850; x=1778756650; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=ZmrgafWER5TklrlynvzNXexUVxLr7++bugjx6nPpFyQ=; b=lg6aOoCsQOoRdgaZ6Nb2ZcEFdGIAiz7gAVSladZLaak2XyA7i95gK9R1azMUrrRtub lDo+c0Na/EB+3lAnGUxtSKwxI1JSu8tFG7gva28yJHzkYtJyASBm+adtHFi8QFTquOPf wJfwY8hLRfywKCaIdKPdJkIDk91alavQDlu4A5JixVSbjP5QJaHPPhllQcJN9zJWXodQ 6ahgX3GgJ1tPG1ldemGuPvpOrp6GWTdVZPJv9D0lVLuLHGzJpYAYXVUOKUU4lt7qDqX6 oBsuDrT6kKItitC/jm8IcvEK37DhJxIvCIh4yu/muvPk8Zk3uMzUELHAppNjlic0Pzlu bFWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778151850; x=1778756650; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=ZmrgafWER5TklrlynvzNXexUVxLr7++bugjx6nPpFyQ=; b=diPDpZ/WBboY5Ryml9RhnqlOE4G9TjB1411/2VTCRfLEMc6rIwl62mQHGJZBsHyUJW ShC7T+N4Gdpf5xj59l052DarRG6yhjT+KbhCqLLjiu1Qd+AMcAxR8pvjjZQCQRR+tze3 ne4VtxsAo3aFK8TxxeVMZJFpA0XLnxIGoQ+Awb63bwFjHY/jxyRiJpjIBNBkQjehQzZR Ozx9DXQSPq9jy3GLISMQy0479fFqA12kqXcjWPU88BSnIzbbaDlrCb1MMqIklMfRN+5j VMN25URhvAnzFO7XIXdqwa5vhG/XeDdc0t2P79cJgdBVLVMOulDD4FZQci36a9OiPnc8 l+Yw== X-Forwarded-Encrypted: i=1; AFNElJ+lyFD6ulHIDEUgpf2Gm9tBnMJFkb8CS980nlH9Wx+byymEq5t2iTqtDtbtojieifGTSV0biiBak/TFEfWW/w==@vger.kernel.org X-Gm-Message-State: AOJu0YxHK3F90ubTbs7WppEbmJ1jq56fVYHdSj6+KhlKGI2s7DNls04Q Cl81D8alqkrnEZUSXg4mo6KZpZBW5qSXfmso6f7Tja0Y8ks+dfN1bgsk X-Gm-Gg: AeBDies4hqZySh0RDtSAnEFACM0llHrwne/CW0l4ISL4Bib+aegusxsT8U1mrOE+JiD MbAzWb7b4m4PShBxm9NvC8v2w16n8QH2Fj8LxsuAcmzXsHQ+5aiLak3+vLtARVdozaZ1mXBVMfw Ga2pCau5qRlL6NbkvmvuI/BAfPx4WemkJrSEVTDYhFD/xq00WifwywdwlfZ7YtNAwC5Cy9oiXk3 645iNs/dvsDjjpI3gycTNbnZHpQu0u/nxfhmKF+SXulypQFWNQOs20UC1UNgPj/Y2gu4uVeJsIU NayzvckvDFId/aI06BurWlaT5qb6AedG5wcR2O/E5hGf4klejSk0TN8oPGud60wWc2D7uge5pKt DdDOynSLTsUOuG+rOVlXfNiHe7afkg6/HiFr+nm3EX/swWbT6gmz3k1q3hOUYk/hcAL7X2hfx6b xwHkTopx0i9b0hhT2KbOaRknZFDmVcTBcfEmiJrJCLy1o6AZ0n9LM= X-Received: by 2002:a05:6a20:6a2c:b0:39f:24a5:3065 with SMTP id adf61e73a8af0-3aa5a72c4abmr8140964637.7.1778151849968; Thu, 07 May 2026 04:04:09 -0700 (PDT) Received: from localhost ([103.74.250.37]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c8253b493c5sm1835163a12.28.2026.05.07.04.04.09 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Thu, 07 May 2026 04:04:09 -0700 (PDT) From: Jiazi Li To: Kees Cook , Andy Shevchenko , Ping-Ke Shih , Julia Lawall , Nicolas Palix Cc: Jiazi Li , linux-hardening@vger.kernel.org, linux-wireless@vger.kernel.org Subject: [PATCH v3 0/3] Add str_alloc_free() helper Date: Thu, 7 May 2026 19:03:02 +0800 Message-ID: X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Currently finds 4 locations: ./drivers/net/wireless/realtek/rtw89/fw.c:2557:7-12: opportunity for str_alloc_free(valid) ./drivers/net/wireless/realtek/rtw89/fw.c:2693:7-12: opportunity for str_alloc_free(valid) ./drivers/android/tests/binder_alloc_kunit.c:196:6-21: opportunity for str_alloc_free(alloc -> pages [ i ]) ./mm/slub.c:1634:3-8: opportunity for str_alloc_free(alloc) Patch 3 is based on https://lore.kernel.org/linux-hardening/CAHp75VdHY814NRfyUfWeqRd4-DwYzHGh25OTsUB5EFpRKpVQLQ@mail.gmail.com/T/#t. --- Changes in v3: Add first user for this helper v2: https://lore.kernel.org/linux-hardening/CAHp75Vdvdr0TPzuDDPSoJ4Nixk-6qO_x6Or9iY9LNwSO1Q6mHg@mail.gmail.com/T/#mfb405519f7b3a06f4fcaa8e5a799da5299d9ee85 Jiazi Li (3): lib/string_choices: Add str_alloc_free() helper wifi: rtw89: Make use of str_alloc_free helper coccinelle: Add rules to find str_alloc_free() replacements drivers/net/wireless/realtek/rtw89/fw.c | 4 +-- include/linux/string_choices.h | 6 ++++ scripts/coccinelle/api/string_choices.cocci | 38 +++++++++++++++++++++ 3 files changed, 46 insertions(+), 2 deletions(-) -- 2.49.0