From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793210621; b=2nAa/VOsK2uXUF4FeLVZR8WPM8vggcetUwKeS5aWtj2lEmkzJZbrRvxSL1/CANj1vmwB nsAxNAJ0zfliVBUVhVEYRvkE7AGhDg6zkbAETZISu4m5Lo3iBqrOomfieBHvlsemWLJtv HIE89jyhFG6we3VWxqdIz1BQxamo+XtDuqSU7KvcgTgrwPuqW/ANqKVemGeFaDVg8xDG7 27NuzpJpePxTaCLufr7O/3d4IsmgSLg4BlZuMZ4FrVkGHTkCBCgdkmolW9eSl2wTpie2H ZawRfzg74RrQI6uwQPwpJzBLbL0uUcJTOpvc8lypnk4Qv5eMbkHdQUkRvZG0xLfxhww== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793210621; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=yEPh39SURMtKzoUHb4QJ0mrUmn0+J96NCS7KnnUnetw=; b=X12ID0jxYj8RVOw56jOQYF5UFScVaYGBTr2WyvgYUsO7gbh/pZtpF/JbOStPztubvy2O x3Y/HwrNUkdyGqXMYKElHkKAXeB/SHrONwW9CKIzjSSnY1Mka9kgBfj9NOyhqYTfw3tAE 5w+kaFnWEPLd0EecZryeeD5fkFpXGJG9ilDCEKNAHIWIX1MwAN8QnKlnx6uDNzJrDBe6e QtXRbyXku9/DMSiFXIFSn/N8xzTbAOpp58m99iHK+8TYW0PupEPZ69Cdw+S1KSd2VNhWr Q/aMDbMrgMjwLXHvqIXT+xg4ZDsRVx6sHHsZJJCiCntSBjCq7E6UhoP4RPK89Ng4WoQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=hU2LFW8X; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D7B0B606A31A; Wed, 28 Oct 2026 18:03:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=hU2LFW8X Received: by smtp.kernel.org (Postfix) with ESMTPSA id 31D141F01825; Wed, 28 Oct 2026 18:03:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793210620; bh=yEPh39SURMtKzoUHb4QJ0mrUmn0+J96NCS7KnnUnetw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hU2LFW8XHRv+BxY8OBMV6v5G2Hjn98tx3YPgZb3XBfAwCDPS8rmIYsxd38ArSf3fG zWt+vEtuCf8hJaZ3rnFN7fiQSzIAD3/cQerUf7j17d+CI8f90NkxZpn6O8/FvVtM9R mHy6zGCT5ZessJp0kGXDcPkedr0n66rDuSJ9H6s4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chao Yu , Guanghui Yang <3497809730@qq.com>, Jaegeuk Kim , Sasha Levin Subject: [PATCH 5.15 091/571] f2fs: fix dentry folio leak in find_in_level Date: Wed, 28 Oct 2026 17:53:58 +0100 Message-ID: <20261028170010.183801146@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170008.009143722@linuxfoundation.org> References: <20261028170008.009143722@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Guanghui Yang <3497809730@qq.com> [ Upstream commit cca7d3e30bf30333314e31bc70b9a739f1342167 ] find_in_level() gets a dentry folio with f2fs_find_data_folio() before calling find_in_block(). If find_in_block() returns an error, the function stores the error in res_folio and breaks out of the loop without dropping the dentry folio. This leaks the folio reference on the find_in_block() error path. Drop the dentry folio before returning the error to the caller. Fixes: 7ad08a58bf67 ("f2fs: Handle casefolding with Encryption") Cc: stable@vger.kernel.org Reviewed-by: Chao Yu Signed-off-by: Guanghui Yang <3497809730@qq.com> Signed-off-by: Jaegeuk Kim [ Replaced f2fs_folio_put(dentry_folio, false) with f2fs_put_page(dentry_page, 0) for the page-based API. ] Signed-off-by: Sasha Levin --- fs/f2fs/dir.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index da717e4d6aee7..8ec23b8af64e1 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -372,6 +372,7 @@ static struct f2fs_dir_entry *find_in_level(struct inode *dir, de = find_in_block(dir, dentry_page, fname, &max_slots, use_hash); if (IS_ERR(de)) { + f2fs_put_page(dentry_page, 0); *res_page = ERR_CAST(de); de = NULL; break; -- 2.53.0