Comment 0 for bug 1371316

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Philipp Kern (pkern) wrote :

The trusty kernel misses the following patch that already landed in utopic with the recent aufs update:

This unbreaks aufs with IMA (Integrity Measurement Architecture) enabled. When IMA is enabled and mmaps are being tracked, the kernel hits a lock ordering bug because a needed semaphore is already held. This patch fixes this issue by not calling out to IMA for the access to the underlying file. However IMA will still see the access to the file in the merged aufs, which should be good enough.

Please cherry-pick above patch.