On 08/15/2009 09:54 AM, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote:
http://bugzilla.kernel.org/show_bug.cgi?id=13909 --- Comment #28 from Roland Kletzing<devzero@xxxxxx> 2009-08-15 13:54:43 --- rus,any chance to try the attached patch and confirm if it is the real fix for the problem ? We're now able to duplicate this bug. Not sure why it only affects ext4. ima: kernel_read parm integer overflow bugfix Reading large files>2G causes process to loop. (http://bugzilla.kernel.org/show_bug.cgi?id=13909) Signed-off-by: Mimi Zohar<zohar@xxxxxxxxxx> Index: security-testing-2.6/security/integrity/ima/ima_crypto.c =================================================================== --- security-testing-2.6.orig/security/integrity/ima/ima_crypto.c +++ security-testing-2.6/security/integrity/ima/ima_crypto.c @@ -47,7 +47,8 @@ int ima_calc_hash(struct file *file, cha struct scatterlist sg[1]; loff_t i_size; char *rbuf; - int rc, offset = 0; + unsigned long offset = 0; + int rc; rc = init_desc(&desc); if (rc != 0)
I suspect that you will need to use the official offset type to avoid overflow at 4GB - loff_t should be more consistent,
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