bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent
In some specific situations, the return value of __bch_btree_node_alloc may be NULL. This may lead to a potential NULL pointer dereference in caller function like a calling chain : btree_split->bch_btree_node_alloc->__bch_btree_node_alloc. Fix it by initializing the return value in __bch_btree_node_alloc. Fixes: cafe5635 ("bcache: A block layer cache") Cc: stable@vger.kernel.org Signed-off-by:Zheng Wang <zyytlz.wz@163.com> Signed-off-by:
Coly Li <colyli@suse.de> Link: https://lore.kernel.org/r/20230615121223.22502-6-colyli@suse.de Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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