memory leak on SE Linux

memory leak on SE Linux

[Russell Coker]

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I have just done a diff between the LSM patch in my kernel-patch-2.4-lsm 
Debian package and the latest release.  It seems that when merging patches or 
porting between kernel versions I made an error and caused the pointer to 
some allocated memory to be cleared incorrectly (thus making it impossible to 
free the memory).

I am still performing tests on the new kernel, but the results so far suggest 
that the kernel memory leak I had previously experienced is now solved.

I recall that some other people reported similar problems, if they were using 
my kernel patch for 2.4.21 then it would be the same thing.  If someone is 
experiencing a kernel memory leak when using a kernel patch from the NSA site 
then it would be a different issue and should be raised again.

NB my web site and the Debian repository now both contain a good patch for 
2.4.21 which solves this problem.


Below is the patch fragment in question.

diff -ruN linux-2.4.21-mine/fs/inode.c linux-2.4.21-nsa/fs/inode.c
- --- linux-2.4.21-mine/fs/inode.c        2003-07-13 12:23:29.000000000 +1000
+++ linux-2.4.21-nsa/fs/inode.c 2003-07-13 12:20:16.000000000 +1000
@@ -125,7 +125,6 @@
                mapping->host = inode;
                mapping->gfp_mask = GFP_HIGHUSER;
                inode->i_mapping = mapping;
- -               inode->i_security = NULL;
        }
        return inode;
 }

- -- 
http://www.coker.com.au/selinux/   My NSA Security Enhanced Linux packages
http://www.coker.com.au/bonnie++/  Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/    Postal SMTP/POP benchmark
http://www.coker.com.au/~russell/  My home page
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