ima: Fix ima digest hash table key calculation
commit 1129d31b upstream. Function hash_long() accepts unsigned long, while currently only one byte is passed from ima_hash_key(), which calculates a key for ima_htable. Given that hashing the digest does not give clear benefits compared to using the digest itself, remove hash_long() and return the modulus calculated on the first two bytes of the digest with the number of slots. Also reduce the depth of the hash table by doubling the number of slots. Cc: stable@vger.kernel.org Fixes: 3323eec9 ("integrity: IMA as an integrity service provider") Co-developed-by:Roberto Sassu <roberto.sassu@huawei.com> Signed-off-by:
Roberto Sassu <roberto.sassu@huawei.com> Signed-off-by:
Krzysztof Struczynski <krzysztof.struczynski@huawei.com> Acked-by: David.Laight@aculab.com (big endian system concerns) Signed-off-by:
Mimi Zohar <zohar@linux.ibm.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
3b6c93db
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