ovl: listxattr: use strnlen()
BugLink: http://bugs.launchpad.net/bugs/1624037 commit 7cb35119 upstream. Be defensive about what underlying fs provides us in the returned xattr list buffer. If it's not properly null terminated, bail out with a warning insead of BUG. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
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