Can "page" be NULL here?
fs/fscache/page.c +712
705 page = results[0];
706 _debug("gang %d [%lx]", n, page->index);
^^^^^^^^^^^
dereference
707 if (page->index > op->store_limit) {
^^^^^^^^^^^
dereference
708 fscache_stat(&fscache_n_store_pages_over_limit);
709 goto superseded;
710 }
711
712 if (page) {
check
713 radix_tree_tag_set(&cookie->stores, page->index,
714 FSCACHE_COOKIE_STORING_TAG);
715 radix_tree_tag_clear(&cookie->stores, page->index,
716 FSCACHE_COOKIE_PENDING_TAG);
717 }
718
719 spin_unlock(&cookie->stores_lock);
720 spin_unlock(&object->lock);
721
722 if (page) {
check
723 fscache_set_op_state(&op->op, "Store");
regards,
dan carpenter
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