Can you try adding the attached patch into your kernel? It applies after the only place in the whole kernel that sets this flag, so given that the flag should be caught if still set when a page is released, it must be being set on a page that has already been released. David --- diff --git a/fs/fscache/page.c b/fs/fscache/page.c index 47aefd3..e5471b8 100644 --- a/fs/fscache/page.c +++ b/fs/fscache/page.c @@ -983,6 +983,7 @@ void fscache_mark_pages_cached(struct fscache_retrieval *op, cookie->def->name, page->index); } } + WARN_ON_ONCE(!page->mapping); } if (cookie->def->mark_pages_cached) -- Linux-cachefs mailing list Linux-cachefs@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cachefs