Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 45525483BFE for ; Fri, 4 Sep 2026 20:32:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788553941; cv=none; b=TAiXciSHqZ0bjcfkGAnfrPUO6nXYxMbsSopmb2LFZubrTjcM2iZl+H9wEVDE2JF9IzbNNmKqoGBfipnbYr1qCZGtSym+eBmbur4hBRjda4kkAtbGbMly4PXQ6QAiTPazub1tsgd3+qSVLolQK9py6QZZ5HUxgu55e38hELqMbrY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788553941; c=relaxed/simple; bh=nhFSZhtKZEO2Rz+ajvk3cQPm2xytjUdpIBE9U4fdF+k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=umHQvyMn3nQ5IxjE3gb51JIRT20NhrhfKxKCwfWALvJ2C+J8eLnPUpHkwViEPK0j/tvXjo++SWB1RZpDRy5pFV+bfOlWIDvLEUV4b417JYDlIiLNXuSkrs1gtBgEESwiD7lG3Ekkr8zDuj1JSbRNVcS8eZ5tmUd1tmiGViagO50= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kfZBe/oe; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="kfZBe/oe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EA7B1F00ACF; Fri, 4 Sep 2026 20:32:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788553928; bh=jVLIsMywX1xX1DaZRPjE6Sf8AnTBqpHp3oh+AC4NY3E=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=kfZBe/oeyYdnjpExUkTge82NY/GeaumnmG9kG2ZQxFNWFsZXFDlel4lsoyWxGgD+d Z5YOxqyQvz/CxlUTESFQFltiQo5WFxvT0oGZOnU6icVtBBV/cs2p5eV63Qz46cbsVw 7tQAjeQcLgvKZkGEuWmk41up/8CAaNRRL8Vp5CWOTl3l0bxQuXAEjVQI9o1u6LGOtO KpoFyNrJBL1B+Vx3BF5zclZ9Huv9sQA1ig0yOdMUKr3+scaLMV6tTIuBTtz+Ca0krr qdor3+j6cKmxL5uFCRweX77pvzZ8OjxEat4GpAPOZIf+SGlK1FGJdTsY+uZHKoLkNv Q6jn+IohVXqbw== From: Sasha Levin To: stable@vger.kernel.org Cc: Sergey Senozhatsky , Hillf Danton , Kairui Song , Minchan Kim , Sebastian Andrzej Siewior , Yosry Ahmed , Andrew Morton , Sasha Levin Subject: [PATCH 6.6.y 3/4] zram: do not leak page on writeback_store error path Date: Fri, 4 Sep 2026 16:32:02 -0400 Message-ID: <20260904203203.1546745-3-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260904203203.1546745-1-sashal@kernel.org> References: <2026090305-dimly-backboned-037d@gregkh> <20260904203203.1546745-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Sergey Senozhatsky [ Upstream commit a6d2193b3ef53d5c5a2c56d397227f5e891f2df3 ] Ensure the page used for local object data is freed on error out path. Link: https://lkml.kernel.org/r/20250303022425.285971-19-senozhatsky@chromium.org Fixes: 330edc2bc059 (zram: rework writeback target selection strategy) Signed-off-by: Sergey Senozhatsky Cc: Hillf Danton Cc: Kairui Song Cc: Minchan Kim Cc: Sebastian Andrzej Siewior Cc: Yosry Ahmed Signed-off-by: Andrew Morton Stable-dep-of: 894913e2d35c ("zram: fix out-of-bounds access in writeback_store()") Signed-off-by: Sasha Levin --- drivers/block/zram/zram_drv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 3b87e89a9a496..cf02efcbc47cc 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -799,8 +799,9 @@ static ssize_t writeback_store(struct device *dev, if (blk_idx) free_block_bdev(zram, blk_idx); - __free_page(page); + release_init_lock: + __free_page(page); return ret; } -- 2.53.0