linux-kernel - [PATCH 3/3] f2fs: fix to check f2fs_compressed_file() in f2fs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200327102953.104035-3-yuchao0@huawei.com>
Date:   Fri, 27 Mar 2020 18:29:53 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     <jaegeuk@...nel.org>
CC:     <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>, <chao@...nel.org>,
        Chao Yu <yuchao0@...wei.com>
Subject: [PATCH 3/3] f2fs: fix to check f2fs_compressed_file() in f2fs_bmap()

Otherwise, for compressed inode, returned physical block address
may be wrong.

Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
 fs/f2fs/data.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 24643680489b..f22f3ba10a48 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3591,6 +3591,8 @@ static sector_t f2fs_bmap(struct address_space *mapping, sector_t block)
 
 	if (f2fs_has_inline_data(inode))
 		return 0;
+	if (f2fs_compressed_file(inode))
+		return 0;
 
 	/* make sure allocating whole blocks */
 	if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))
-- 
2.18.0.rc1