From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB337C04EB8 for ; Thu, 6 Dec 2018 14:50:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A200E20661 for ; Thu, 6 Dec 2018 14:50:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544107802; bh=K6kikIzlNiNm1GUuu9sCt6v+XWe8E75Al2mnTBYTrIc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=GV3SLRgtcGGLUHd07NcxBfE9q8NRSkowmTZSQhxbyG85Wd6rfP4ip85csS35B5oyL 2WuO8v3S717rIPrHIK1zZxp9CDORuIha+jnjh0wIsPyRsiyfkdqhwnJMYvKurw4w4+ UqZ62s5uSXZzBuD2V5SpwBTFUSWVVjE6bNkQJTqM= DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A200E20661 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731460AbeLFOre (ORCPT ); Thu, 6 Dec 2018 09:47:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:52526 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730496AbeLFOra (ORCPT ); Thu, 6 Dec 2018 09:47:30 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 20C7920661; Thu, 6 Dec 2018 14:47:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544107649; bh=K6kikIzlNiNm1GUuu9sCt6v+XWe8E75Al2mnTBYTrIc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YNddpbV11NXUWHpI0D7E9NFu2K9NXWRjiNVtD9mb1upTmIPPZDc5OYleh0kWXFdTk LkzjO+M+q1AU6L8gYnMqdXASZLlS2vTjrRHcDnZhHKmWs/g/4aTEWrZvX2dIkeD7sO iGm7EWuFzq1/UNmRabYXYg1aE+ADBh6RDG2psFCo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yunlei He , Chao Yu , Jaegeuk Kim , Ben Hutchings Subject: [PATCH 4.9 087/101] f2fs: check blkaddr more accuratly before issue a bio Date: Thu, 6 Dec 2018 15:39:26 +0100 Message-Id: <20181206143017.722302173@linuxfoundation.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181206143011.174892052@linuxfoundation.org> References: <20181206143011.174892052@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yunlei He commit 0833721ec3658a4e9d5e58b6fa82cf9edc431e59 upstream. This patch check blkaddr more accuratly before issue a write or read bio. Signed-off-by: Yunlei He Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim [bwh: Backported to 4.9: adjust context] Signed-off-by: Ben Hutchings Signed-off-by: Greg Kroah-Hartman --- fs/f2fs/checkpoint.c | 2 ++ fs/f2fs/data.c | 5 +++-- fs/f2fs/f2fs.h | 1 + fs/f2fs/segment.h | 25 +++++++++++++++++++------ 4 files changed, 25 insertions(+), 8 deletions(-) --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -69,6 +69,7 @@ static struct page *__get_meta_page(stru .old_blkaddr = index, .new_blkaddr = index, .encrypted_page = NULL, + .is_meta = is_meta, }; if (unlikely(!is_meta)) @@ -162,6 +163,7 @@ int ra_meta_pages(struct f2fs_sb_info *s .op = REQ_OP_READ, .op_flags = sync ? (READ_SYNC | REQ_META | REQ_PRIO) : REQ_RAHEAD, .encrypted_page = NULL, + .is_meta = (type != META_POR), }; struct blk_plug plug; --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -240,6 +240,7 @@ int f2fs_submit_page_bio(struct f2fs_io_ struct page *page = fio->encrypted_page ? fio->encrypted_page : fio->page; + verify_block_addr(fio, fio->new_blkaddr); trace_f2fs_submit_page_bio(page, fio); f2fs_trace_ios(fio, 0); @@ -267,8 +268,8 @@ void f2fs_submit_page_mbio(struct f2fs_i io = is_read ? &sbi->read_io : &sbi->write_io[btype]; if (fio->old_blkaddr != NEW_ADDR) - verify_block_addr(sbi, fio->old_blkaddr); - verify_block_addr(sbi, fio->new_blkaddr); + verify_block_addr(fio, fio->old_blkaddr); + verify_block_addr(fio, fio->new_blkaddr); down_write(&io->io_rwsem); --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -694,6 +694,7 @@ struct f2fs_io_info { block_t old_blkaddr; /* old block address before Cow */ struct page *page; /* page to be written */ struct page *encrypted_page; /* encrypted page */ + bool is_meta; /* indicate borrow meta inode mapping or not */ }; #define is_read_io(rw) (rw == READ) --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -49,13 +49,19 @@ (secno == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno / \ sbi->segs_per_sec)) \ -#define MAIN_BLKADDR(sbi) (SM_I(sbi)->main_blkaddr) -#define SEG0_BLKADDR(sbi) (SM_I(sbi)->seg0_blkaddr) +#define MAIN_BLKADDR(sbi) \ + (SM_I(sbi) ? SM_I(sbi)->main_blkaddr : \ + le32_to_cpu(F2FS_RAW_SUPER(sbi)->main_blkaddr)) +#define SEG0_BLKADDR(sbi) \ + (SM_I(sbi) ? SM_I(sbi)->seg0_blkaddr : \ + le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment0_blkaddr)) #define MAIN_SEGS(sbi) (SM_I(sbi)->main_segments) #define MAIN_SECS(sbi) (sbi->total_sections) -#define TOTAL_SEGS(sbi) (SM_I(sbi)->segment_count) +#define TOTAL_SEGS(sbi) \ + (SM_I(sbi) ? SM_I(sbi)->segment_count : \ + le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count)) #define TOTAL_BLKS(sbi) (TOTAL_SEGS(sbi) << sbi->log_blocks_per_seg) #define MAX_BLKADDR(sbi) (SEG0_BLKADDR(sbi) + TOTAL_BLKS(sbi)) @@ -591,10 +597,17 @@ static inline void check_seg_range(struc f2fs_bug_on(sbi, segno > TOTAL_SEGS(sbi) - 1); } -static inline void verify_block_addr(struct f2fs_sb_info *sbi, block_t blk_addr) +static inline void verify_block_addr(struct f2fs_io_info *fio, block_t blk_addr) { - BUG_ON(blk_addr < SEG0_BLKADDR(sbi) - || blk_addr >= MAX_BLKADDR(sbi)); + struct f2fs_sb_info *sbi = fio->sbi; + + if (PAGE_TYPE_OF_BIO(fio->type) == META && + (!is_read_io(fio->op) || fio->is_meta)) + BUG_ON(blk_addr < SEG0_BLKADDR(sbi) || + blk_addr >= MAIN_BLKADDR(sbi)); + else + BUG_ON(blk_addr < MAIN_BLKADDR(sbi) || + blk_addr >= MAX_BLKADDR(sbi)); } /*