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 55CA63EA71; Wed, 21 Feb 2024 13:12:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708521154; cv=none; b=X3xrHEZDfVkff7WWk5X9ggQ7IDH5eBjk7AgGLTzhwhBglmrYWvKsS3KkR/mA3uuN2TQ+Pfe8NZ7vlzLvsOJZMZJ5/jNJm4S+t9Lo6VmzUzK2Rj0uKps+zcA2Z0j5FrYk9lJkAOZeh8FtFlFabzqi7QBmPm1j/eplNlbc1YAlqj8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708521154; c=relaxed/simple; bh=seQsWcEqfHz5ZJ6TSOOCCTpEs7C29ETyoSDGpnZBYGA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SAls8v5dMpXkm0IDuVhdXFbESZFl96lRl+ZV8h6KlBh+x6XoUbb+juDTzPNB8FYgexF45C8N1bJvQXwbWZsjL+ehB3Qw/MKSlcvJTnO99f1OvYSvMvGTv/MShGHLDrLhCp2ay1UqQzNDZe0DiZ/j1afCyTRtU7Zie3j5IYJs04I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=eWHnJSep; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="eWHnJSep" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B9F42C433F1; Wed, 21 Feb 2024 13:12:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708521154; bh=seQsWcEqfHz5ZJ6TSOOCCTpEs7C29ETyoSDGpnZBYGA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eWHnJSepY3J8BMlZKpC7lmDr1RQBdI4VAig8Ub/PIO+XG1XWpJuF3bjgEqR+UH3se isqUA305vNZ9OjX450MmC9/eax/0xIpU3CR9FGRwNPPYKwzYUKaczQNtswi+kvNCPm N2kDSdGCKURqv0VbOaQt7l4N5H4nXBGQ6sBo8J28= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhipeng Lu , Simon Horman , Jakub Kicinski , Sasha Levin Subject: [PATCH 4.19 035/202] fjes: fix memleaks in fjes_hw_setup Date: Wed, 21 Feb 2024 14:05:36 +0100 Message-ID: <20240221125932.926203508@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221125931.742034354@linuxfoundation.org> References: <20240221125931.742034354@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Zhipeng Lu [ Upstream commit f6cc4b6a3ae53df425771000e9c9540cce9b7bb1 ] In fjes_hw_setup, it allocates several memory and delay the deallocation to the fjes_hw_exit in fjes_probe through the following call chain: fjes_probe |-> fjes_hw_init |-> fjes_hw_setup |-> fjes_hw_exit However, when fjes_hw_setup fails, fjes_hw_exit won't be called and thus all the resources allocated in fjes_hw_setup will be leaked. In this patch, we free those resources in fjes_hw_setup and prevents such leaks. Fixes: 2fcbca687702 ("fjes: platform_driver's .probe and .remove routine") Signed-off-by: Zhipeng Lu Reviewed-by: Simon Horman Link: https://lore.kernel.org/r/20240122172445.3841883-1-alexious@zju.edu.cn Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/fjes/fjes_hw.c | 37 ++++++++++++++++++++++++++++++------- 1 file changed, 30 insertions(+), 7 deletions(-) diff --git a/drivers/net/fjes/fjes_hw.c b/drivers/net/fjes/fjes_hw.c index 9c652c04375b..c3fa8db69b9e 100644 --- a/drivers/net/fjes/fjes_hw.c +++ b/drivers/net/fjes/fjes_hw.c @@ -235,21 +235,25 @@ static int fjes_hw_setup(struct fjes_hw *hw) mem_size = FJES_DEV_REQ_BUF_SIZE(hw->max_epid); hw->hw_info.req_buf = kzalloc(mem_size, GFP_KERNEL); - if (!(hw->hw_info.req_buf)) - return -ENOMEM; + if (!(hw->hw_info.req_buf)) { + result = -ENOMEM; + goto free_ep_info; + } hw->hw_info.req_buf_size = mem_size; mem_size = FJES_DEV_RES_BUF_SIZE(hw->max_epid); hw->hw_info.res_buf = kzalloc(mem_size, GFP_KERNEL); - if (!(hw->hw_info.res_buf)) - return -ENOMEM; + if (!(hw->hw_info.res_buf)) { + result = -ENOMEM; + goto free_req_buf; + } hw->hw_info.res_buf_size = mem_size; result = fjes_hw_alloc_shared_status_region(hw); if (result) - return result; + goto free_res_buf; hw->hw_info.buffer_share_bit = 0; hw->hw_info.buffer_unshare_reserve_bit = 0; @@ -260,11 +264,11 @@ static int fjes_hw_setup(struct fjes_hw *hw) result = fjes_hw_alloc_epbuf(&buf_pair->tx); if (result) - return result; + goto free_epbuf; result = fjes_hw_alloc_epbuf(&buf_pair->rx); if (result) - return result; + goto free_epbuf; spin_lock_irqsave(&hw->rx_status_lock, flags); fjes_hw_setup_epbuf(&buf_pair->tx, mac, @@ -287,6 +291,25 @@ static int fjes_hw_setup(struct fjes_hw *hw) fjes_hw_init_command_registers(hw, ¶m); return 0; + +free_epbuf: + for (epidx = 0; epidx < hw->max_epid ; epidx++) { + if (epidx == hw->my_epid) + continue; + fjes_hw_free_epbuf(&hw->ep_shm_info[epidx].tx); + fjes_hw_free_epbuf(&hw->ep_shm_info[epidx].rx); + } + fjes_hw_free_shared_status_region(hw); +free_res_buf: + kfree(hw->hw_info.res_buf); + hw->hw_info.res_buf = NULL; +free_req_buf: + kfree(hw->hw_info.req_buf); + hw->hw_info.req_buf = NULL; +free_ep_info: + kfree(hw->ep_shm_info); + hw->ep_shm_info = NULL; + return result; } static void fjes_hw_cleanup(struct fjes_hw *hw) -- 2.43.0