From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7197BBA34 for ; Tue, 7 Mar 2023 17:31:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CA108C433D2; Tue, 7 Mar 2023 17:31:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678210273; bh=f6W7bCcTSiDUU65TmuctwK2LGw8w6jQmgWm8k5T/kqc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SXXiQCfeUG+aHt28ghZjiOzYVmfkkXmdYfTpt1UebqLdWTduc2kdDIrFq/TLmAeWz +88Gc+9ZRZQthezXnmPwKryjTQuSHsfjULUEHU6+Xzl7OWLicLmylV3qOcYOAVn4lh W9/G5tARKc39P6gg3NIIElOPKX+wij6/MqK8IxSo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Miaoqian Lin , Cheng Xu , Leon Romanovsky , Sasha Levin Subject: [PATCH 6.2 0487/1001] RDMA/erdma: Fix refcount leak in erdma_mmap Date: Tue, 7 Mar 2023 17:54:19 +0100 Message-Id: <20230307170042.524346399@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307170022.094103862@linuxfoundation.org> References: <20230307170022.094103862@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Miaoqian Lin [ Upstream commit ee84146c05ad2316b9a7222d0ec4413e0bf30eeb ] rdma_user_mmap_entry_get() take reference, we should release it when not need anymore, add the missing rdma_user_mmap_entry_put() in the error path to fix it. Fixes: 155055771704 ("RDMA/erdma: Add verbs implementation") Signed-off-by: Miaoqian Lin Link: https://lore.kernel.org/r/20221220121139.1540564-1-linmq006@gmail.com Acked-by: Cheng Xu Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/hw/erdma/erdma_verbs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/erdma/erdma_verbs.c b/drivers/infiniband/hw/erdma/erdma_verbs.c index 5dab1e87975ba..9c30d78730aa1 100644 --- a/drivers/infiniband/hw/erdma/erdma_verbs.c +++ b/drivers/infiniband/hw/erdma/erdma_verbs.c @@ -1110,12 +1110,14 @@ int erdma_mmap(struct ib_ucontext *ctx, struct vm_area_struct *vma) prot = pgprot_device(vma->vm_page_prot); break; default: - return -EINVAL; + err = -EINVAL; + goto put_entry; } err = rdma_user_mmap_io(ctx, vma, PFN_DOWN(entry->address), PAGE_SIZE, prot, rdma_entry); +put_entry: rdma_user_mmap_entry_put(rdma_entry); return err; } -- 2.39.2