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-next>] [day] [month] [year] [list]
Date:	Thu, 26 Sep 2013 17:03:21 -0700
From:	"Darrick J. Wong" <darrick.wong@...cle.com>
To:	tytso@....edu, darrick.wong@...cle.com
Cc:	linux-ext4@...r.kernel.org
Subject: [PATCH v1 0/2] ext4: Shut down block groups when damage is detected,
 part 2

This patchset adds in a few things that weren't included in the original block
group shutdown patches.

The first prevents corrupt block groups from contributing to the free block
summary count, since by definition corrupt block groups have no free blocks.

The second patch performs a quick sanity check of bitmap and inode table block
numbers when loading them in from disk.  These are the same checks that are
done at mount time; this patch guards against either deliberate sabotage or
memory corruption.  Since we're about to do a slow disk read anyway, we might
as well take the time to double check for obvious brokenness.

This patchset has been tested (albeit lightly) against 3.12-rc2 on x64.

Comments and questions are, as always, welcome.

--D
--
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

Powered by blists - more mailing lists