linux-ext4 - Re: [PATCH] e2fsck: fix "can't find dup

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: <CAFZ0FUUQ9LA67DS2tJLd1KoQpKT-YCd4A=GCiAui2Xju4tFQXw@mail.gmail.com>
Date:	Sat, 19 Nov 2011 16:32:01 +0800
From:	Robin Dong <hao.bigrat@...il.com>
To:	"Ted Ts'o" <tytso@....edu>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH] e2fsck: fix "can't find dup_blk" error

2011/11/19 Ted Ts'o <tytso@....edu>:
> On Fri, Nov 18, 2011 at 10:52:38AM +0800, Robin Dong wrote:
>> From: Robin Dong <sanbai@...bao.com>
>>
>> After:
>> 1. mke2fs -O ^has_journal,^resize_inode,^uninit_bg,extent,meta_bg,flex_bg,bigalloc /dev/sda
>> 2. mount -t ext4 /dev/sda /test/
>> 3. create file (8192K size, extent' e_len is 2) /test/1 ~ /test/10
>> 4. use tool to change the /test/5 extent's e_len to 100, corrupt file
>> 5. e2fsck -f /dev/sda
>
> I can't replicate this.  I presume it only shows up with your
> modification to the bigalloc format?
>
>                                                - Ted
>

Hi, Ted

I am not using my modification bigalloc format.
I use the upstream kernel (3.2-rc2) and uptodate e2fsprogs master
branch code, the error report will emerge after my steps above.
My /dev/sda is small (about 100G), so I guess:

# create /test/1 ~ /test/100 (e_len == 2)
# make /test/5 's e_len to 1024

may replicate this problem on larger disk.


-- 
--
Best Regard
Robin Dong
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html