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Serge E. Hallyn authored
Since this cred was not created with copy_creds(), it needs to get initialized. Otherwise use of syscall(__NR_keyctl, KEYCTL_SESSION_TO_PARENT); can lead to a NULL deref. Thanks to Robert for finding this. But introduced by commit 47a150ed ("Cache user_ns in struct cred"). Signed-off-by:
Serge E. Hallyn <serge.hallyn@canonical.com> Reported-by:
Robert Święcki <robert@swiecki.net> Cc: David Howells <dhowells@redhat.com> Cc: stable@kernel.org (2.6.39) Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
f7285b5d