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Date: Wed, 22 Feb 2017 16:22:12 +0000 From: David Howells <dhowells@...hat.com> To: Elena Reshetova <elena.reshetova@...el.com> Cc: dhowells@...hat.com, linux-kernel@...r.kernel.org, linux-afs@...ts.infradead.org, peterz@...radead.org, gregkh@...uxfoundation.org, Hans Liljestrand <ishkamiel@...il.com>, Kees Cook <keescook@...omium.org>, David Windsor <dwindsor@...il.com> Subject: Re: [PATCH 2/4] fs, afs: convert afs_vlocation.usage from atomic_t to refcount_t Elena Reshetova <elena.reshetova@...el.com> wrote: > refcount_t type and corresponding API should be > used instead of atomic_t when the variable is used as > a reference counter. This allows to avoid accidental > refcounter overflows that might lead to use-after-free > situations. Please hold this patch also. An assertion failure may happen here too because afs_vlocation_lookup() may resurrect records with a refcount of 0 from the cache. David
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