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]
Date:	Sat, 10 Oct 2009 05:26:18 +0200
From:	Maxim Levitsky <maximlevitsky@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	linux-pm <linux-pm@...ts.linux-foundation.org>
Subject: ext4 filesystem corruption

I have more information on that issue.

First of all this isn't related to s2ram/disk.
Second, this happened here again 3 times.

Now kernel complains loudly about access to freed inode.

After a reboot fsck tells the following:

- Some directory entries point to freed inodes,
   Which means these files are gone, but I never deleted some of them

- Some inodes have shared blocks

- Some orpahaned inodes found

- Free block counts/bitmaps corrupted.

That all happens without any s2ram/disk cycle.

However, yet an unusual situation did happen today.
I had installed an update to mountall ubuntu package, and it hosed all
boot process.
I had to  reboot many times, and once did hold the power button for 4
seconds.

I also used often the SYSRQ+U/SYSRQ+B tool.

On the contrary, I did several s2disk cycles, and one did fail, but
there was no corruption.

I must say that until now, I had never seen any ext3/ext4 corruption,
even though there were many many crashes, power failures, forced
reboots, etc...

Best regards,
Maxim Levitsky

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ