linux-kernel - [patch] x86-64 ext2/ext3 datestamp problem

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Message-ID: <45C8F419.5040103@amd.com>
Date:	Tue, 06 Feb 2007 22:33:13 +0100
From:	"Markus Rechberger" <markus.rechberger@....com>
To:	linux-kernel@...r.kernel.org
Subject: [patch] x86-64 ext2/ext3 datestamp problem

Hi,

there is an issue with ext2/ext3 date stamps, if someone creates a file
with a timestamp between 1902 and 1970(epoch 0) it will overflow and
result in a higher date than 2038.

$ touch --date "1905-01-01" test
$ ls -lah test
-rw-r--r-- 1 root root 0 Jan  1  1905 test (this is a cached value here)
(remount the partition/clear the cache)
$ ls -lah test
-rw-r--r-- 1 root root 0 Feb  6  2041 test

10000101101111001100011001110000 .. -2051226000 (1905)
10000101101111001100011001110000 .. 2243741296 (2041)

this was tested against linus git tree

Markus

-- 
Markus Rechberger
Operating System Research Center
AMD Saxony LLC & Co. KG


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