From nobody Sat Jul 25 03:50:11 2026 Received: from out162-62-58-211.mail.qq.com (out162-62-58-211.mail.qq.com [162.62.58.211]) (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 74F953806D9; Sun, 19 Jul 2026 08:45:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.58.211 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784450736; cv=none; b=OBRKYO4pfPKXoAMy4KIbZET+p4/Ni0TWkAsO5mv+DjcG7Ck+BH3KBhtB2HFEpDfeKQrcrpdA7LYGbkpQET8QMINXVVoNKNkShv0toUMspDfCvLQ0HLUezPysVrCkJWVib0DB9sjzqDO59OlU9T/QUxo8WewMzZ4JjZrS4BJQzGk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784450736; c=relaxed/simple; bh=mr5uU9bG1jypqHI5+oUDLAsVh1KcDPH3TiYZ2d1fmWE=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=o1IOrl3GgliveaexVVTPpfIIAhNuwqag6nheKYKWqhI7XWGx5UffizpI6aOCXUiCkSO1/Sscywhy+4RlioB+3YxQBNNQwrv/RjzFJ9IAkfEcOcSiRHI1FzIKm1HWGL9qMOEOlLTfy0ryK+AOzCZa4gA+EIueq9I0eRxJU9OjlxY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=iI4kFqPS; arc=none smtp.client-ip=162.62.58.211 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="iI4kFqPS" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1784450723; bh=dUvX8gecFJ2u6baMcbOFCOLfemTBHpSn5RLuwC5A4MY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=iI4kFqPSnKO213Vb+OvYUIeoShKsYfvrFeF40f11/BpMQ75TIgyts64PeT5DrTm9e Gvs1SR2CIt+p+66O9rzvxZfglq+V9vC93yguBr9M6TtjdShgo8w+Tr/I/vev6e9Ei/ xr2m0MNMcXvWE4frgK6vKQhdPWye87Ma7M1M11bw= Received: from ikun ([223.65.85.165]) by newxmesmtplogicsvrszb51-0.qq.com (NewEsmtp) with SMTP id B5213A5C; Sun, 19 Jul 2026 16:45:18 +0800 X-QQ-mid: xmsmtpt1784450718tarqiyoj6 Message-ID: X-QQ-XMAILINFO: OVFdYp27KdlJ7hi3npMz4REHgCb43EKtDQcpCCg1bQ7BYSLYUEYMA8MwGdlBQa CGDza58dQ51c+W6O3yQ+6bbyo4iVMbPjZn0WhWxzXcvyFzOYh5tNVCbtybO9WfRPfppBNls9FKSh vKGUorclOfrnjnlWA39oxDXYWgfbeYVi8dvDAGuGYHXg5cPrxJP3kP8J528dOpkVWOwF7O10e36u gj5VtJpcRgsUH4pZFH2PMZsxvDwMMuEhIujpzF4yEiAcHpIjK//zziYJa0n036O0gquYcoX6tRkV T+9je79OaQNohcLOu/+lQh+ZQcBzL5Luldf79Y9g1WCPLgTrspXxyThK7Ue8eeIMOn9a4bGfGxU4 f6knND1sSWModBTxyb7t10O3eGS/Bvv6LbSdMOqn3KGy7jy+luIeX3XP9vhecFe7kzI7+q5bzocR Xs14ys/PnIC5V2JvwdrLNQH185aA08Fp5up5/Utv7gPE1clIwt48QqD2WKtuJpbgFD601meVpDbj nfywIBffOOViqw8IpKuCKvmiHyaLXXKfikr15rb8bzbK2Y79iWJ3zlh0pcsHmxyGfTuwfSVfiMJ2 qndRrYXkhzn8GHb4/iKDwLvkHlCY10D53QvzZv8hvWh5hHJZfEC7pbSxtVfwOVUtWly5dcXbGU9E GsIn37mdgIfFGoc77ZWFP3Cj8CckX8cmlGvzUiDq/goSm4DGEtenrGvUKDQ4zE6ldMVS1Q9uu02s hA+mMG3pK674ap00vKIdSBA0W1fWyOvMCDC7RyvrLgojs0NBY3o2fFBOWNfTPRztnPQmzs5jRuaI 4yoisfKKG1tQqZo9obDv5Cj7FqvjClk1aMqa6CtyyY3EGY7nOG2Eeq3dxzoj9Eb5Oclia74mBvEN Qy+b1V6OFXncQmzUJvpZ3b1GPk9i5l2NCp3Kc7GtBSFodVX/aq62p+dshdt+1Grf7xKT7JEyezGr 2sBCiMYpm1GnuwXu8n06SMYgX4rA3BipwPwDano+V7tFZeeh0ZeGYZJXo0g/siMjVpOnjMKzUnZ7 JffUkSZL2YtwxwbUK2YjEJ0ABLsnY= X-QQ-XMRINFO: NS+P29fieYNwqS3WCnRCOn9D1NpZuCnCRA== From: Guanghui Yang <3497809730@qq.com> To: jaegeuk@kernel.org Cc: chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Guanghui Yang <3497809730@qq.com>, stable@vger.kernel.org Subject: [PATCH v2] f2fs: fix dentry folio leak in find_in_level Date: Sun, 19 Jul 2026 16:45:14 +0800 X-OQ-MSGID: <20260719084514.586-1-3497809730@qq.com> X-Mailer: git-send-email 2.52.0.windows.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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> --- fs/f2fs/dir.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index a9563f7fcd88..0562ad211351 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -320,6 +320,7 @@ static struct f2fs_dir_entry *find_in_level(struct inod= e *dir, =20 de =3D find_in_block(dir, dentry_folio, fname, &max_slots, use_hash); if (IS_ERR(de)) { + f2fs_folio_put(dentry_folio, false); *res_folio =3D ERR_CAST(de); de =3D NULL; break; base-commit: a13c140cc289c0b7b3770bce5b3ad42ab35074aa --=20 2.52.0.windows.1