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  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]
Date:	Wed, 13 Apr 2011 10:10:06 -0400
From:	Mark Lord <>
To:	Ted Ts'o <>,
	Linux Kernel <>,
Subject: Re: CONFIG_EXT4_USE_FOR_EXT23:  rootfs shows as ext2 instead of ext4

On 11-04-12 08:49 PM, Ted Ts'o wrote:
> On Tue, Apr 12, 2011 at 01:25:08PM -0400, Mark Lord wrote:
>> Ted et al.
>> I've only just noticed this, so I have no idea how long it has been this way.
>> When I build a kernel with CONFIG_EXT4_USE_FOR_EXT23=y and boot from it,
>> the ext4 root filesystem shows up as "ext2" mode, rather than "ext4".
>> This looks very wrong to me, and quite dangerous.
> It's a cosemtic bug, I agree, but I'm not sure why you consider it
> dangerous.

It is dangerous if it really has mounted an ext4 as ext2;
the on-disk formats are not 100% compatible.

I don't know what it is doing, so it looks quite dangerous.
Perhaps it really did mount as ext4 though, in which case not.

To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists