From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 50478280018; Wed, 3 Dec 2025 07:08:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764745719; cv=none; b=K5kXVyjXU2RMe2wW3LhC5AjLF7qA/+f/R9AJzt3phqJbm1XJuN4gV4SosLo37VJLa/VryPppk7AuXwUJmG2zG0azpqX8Zwc9sw66ffPCDVrolTOwVNeU9nZIpWO4z4sgIMPULi3KnpNpH9xnE6oir9HCJ5kCdhut+TvA+zIFQfA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764745719; c=relaxed/simple; bh=kS7PLRaGvhWYYFenhSb7EHUzpStqNfldbLpS48rcnNI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Kl76rhc7ZlFnN4Xy248BIjSOfI4Q63c0YYWet3pvG6DQB+eRSyEY17JSE0K3pbw4EFtbMCJWNcttPRLt62wlobM0DgriZf3FIauVmM4UaJw+U567l5WCLTxs6onzPFh1ft5uwMp3LWN4Bl+DoXq2POWLGO8ahZXuq1ulMBykpsE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from DESKTOP-L0HPE2S (unknown [124.16.141.245]) by APP-03 (Coremail) with SMTP id rQCowACXJ9rn4S9pfdECAw--.1851S2; Wed, 03 Dec 2025 15:08:25 +0800 (CST) From: Haotian Zhang To: linkinjeon@kernel.org, sj1557.seo@samsung.com, yuezhang.mo@sony.com Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Haotian Zhang Subject: [PATCH] fs: exfat: Fix corrupted error code handling in exfat_find_empty_entry() Date: Wed, 3 Dec 2025 15:08:13 +0800 Message-ID: <20251203070813.1448-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.50.1.windows.1 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:rQCowACXJ9rn4S9pfdECAw--.1851S2 X-Coremail-Antispam: 1UD129KBjvdXoW7Jw4DXr45AF1kuFWxGw43GFg_yoWDArg_CF 40qr1Uury2vF4fZrsrGw4akFZa9a1rWr47XF4Utrnruas8Jr4fJF1DXrn8A3Wjkr4fGFn8 u34vyrWfKa4I9jkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbsAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26F4UJVW0owA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gc CE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E 2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r4j6F4UMcvjeVCFs4IE7xkEbVWUJV W8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lc7CjxVAaw2AFwI0_ JF0_Jw1lc2xSY4AK67AK6r4xMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r 4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF 67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2I x0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2 z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnU UI43ZEXa7VUUZXo5UUUUU== X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiDAYFA2kvyOxNzgABss exfat_find_empty_entry() stores the return value of exfat_alloc_cluster() in an unsigned int. When exfat_alloc_cluster() returns a negative errno, it is converted to a large positive value, which corrupts error propagation to the caller. Change the type of ret to int so that negative errno values are preserved. Fixes: 5f2aa075070c ("exfat: add inode operations") Signed-off-by: Haotian Zhang --- fs/exfat/namei.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c index f5f1c4e8a29f..f2a87ecd79f9 100644 --- a/fs/exfat/namei.c +++ b/fs/exfat/namei.c @@ -304,8 +304,8 @@ static int exfat_find_empty_entry(struct inode *inode, struct exfat_chain *p_dir, int num_entries, struct exfat_entry_set_cache *es) { - int dentry; - unsigned int ret, last_clu; + int dentry, ret; + unsigned int last_clu; loff_t size = 0; struct exfat_chain clu; struct super_block *sb = inode->i_sb; -- 2.50.1.windows.1