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authorAl Viro <viro@zeniv.linux.org.uk>2010-05-17 04:59:46 (GMT)
committerAl Viro <viro@zeniv.linux.org.uk>2010-05-21 22:31:27 (GMT)
commit4403158ba295c8e36f6736b1bb12d0f7e1923dac (patch)
treea85c276c7ba414ecc65a93488dcb2ef7972779c0 /fs/afs
parentab9a79b9669c28734a69fa9384df6fb93152e53a (diff)
downloadlinux-fsl-qoriq-4403158ba295c8e36f6736b1bb12d0f7e1923dac.tar.xz
Ban ecryptfs over ecryptfs
This is a seriously simplified patch from Eric Sandeen; copy of rationale follows: === mounting stacked ecryptfs on ecryptfs has been shown to lead to bugs in testing. For crypto info in xattr, there is no mechanism for handling this at all, and for normal file headers, we run into other trouble: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: [<ffffffffa015b0b3>] ecryptfs_d_revalidate+0x43/0xa0 [ecryptfs] ... There doesn't seem to be any good usecase for this, so I'd suggest just disallowing the configuration. Based on a patch originally, I believe, from Mike Halcrow. === Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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