From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 2 Feb 2000 14:41:02 +0100 (CET) From: Rik van Riel Subject: Re: 2.3.42: Strange memory corruption In-Reply-To: <20000202051433.A298@tony.dorf.wh.uni-dortmund.de> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Patrick Mau Cc: Linux Kernel , Linux MM List-ID: On Wed, 2 Feb 2000, Patrick Mau wrote: > I have a really strange memory corruption problem with > 2.3.42. My system configuration is as follows: > After a few md5sums I get different checksums. > Now I check the file with bzip2 and get a CRC error. > > Now I make a copy (plain 'cp') of that file. > > Then I repeat the above with the copy and get different > checksums and also CRC errors from bzip2. (I expected that). > > --> Here comes the strange part <--- > > Now I reboot into 2.3.30. Same config. > And BOTH files, even the 'corrupt' copy, are > correct. I can run the md5sum test AND can uncompress > BOTH of them. I can always reproduce that. This looks a bit like there might be a race with the pagetable mapping or read()ing of the file. It would explain the three `suspicious' segfaults I've seen in the last few days... regards, Rik -- The Internet is not a network of computers. It is a network of people. That is its real strength. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/