linux-ext4 - Re: [PATCH] Remove VLAIS usage from JBD2 code

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:	Thu, 8 Nov 2012 10:53:07 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	"Darrick J. Wong" <darrick.wong@...cle.com>
Cc:	Behan Webster <behanw@...verseincode.com>,
	linux-ext4@...r.kernel.org, Mark Charlebois <charlebm@...il.com>
Subject: Re: [PATCH] Remove VLAIS usage from JBD2 code

Hey Darrick,

I was looking at this code a bit more closely while applying the
revised version of this patch --- and this in particular raised a red
flag for me:

     *(u32 *)desc.ctx = crc;
     	   ...
     return *(u32 *)desc.ctx;

Does this raise any byte swapping issues?  Looking at how the crc32
code in crypto/ works, I'm almost certain this is broken on big-endian
systems, and we need to add le32_to_cup() and cpu_to_le32() calls here.

Am I missing something?

	     	     	    		  - Ted
--
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