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 AA7551F94B for ; Fri, 21 Jul 2023 18:59:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C324C433C7; Fri, 21 Jul 2023 18:59:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689965984; bh=MTCTiG4zcHbQkUQgYCOuZFdyp263Clraks052Ayih3c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AYZZzYlh4o0xKCGigc2bZ4TFwJ1+TkVfv4YERxLgDSFDA5WTWw3phBUcAkvgRK2pn TskLxEFBiW9rzf7ecA3Qd+PUMn1m7NDlVmi/uB7LWF8nM/wdpIs+KkVrlOwAengrn1 T742vZWHUvdudFmamHdUKvRdzYIW+nnDTtEg0fKQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Claudiu Beznea , Stephen Boyd , Sasha Levin Subject: [PATCH 5.15 183/532] clk: cdce925: check return value of kasprintf() Date: Fri, 21 Jul 2023 18:01:27 +0200 Message-ID: <20230721160624.298890658@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230721160614.695323302@linuxfoundation.org> References: <20230721160614.695323302@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: Claudiu Beznea [ Upstream commit bb7d09ddbf361d51eae46f38e7c8a2b85914ea2a ] kasprintf() returns a pointer to dynamically allocated memory. Pointer could be NULL in case allocation fails. Check pointer validity. Identified with coccinelle (kmerr.cocci script). Fixes: 19fbbbbcd3a3 ("Add TI CDCE925 I2C controlled clock synthesizer driver") Depends-on: e665f029a283 ("clk: Convert to using %pOFn instead of device_node.name") Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20230530093913.1656095-3-claudiu.beznea@microchip.com Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/clk-cdce925.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/clk/clk-cdce925.c b/drivers/clk/clk-cdce925.c index 308b353815e17..470d91d7314db 100644 --- a/drivers/clk/clk-cdce925.c +++ b/drivers/clk/clk-cdce925.c @@ -705,6 +705,10 @@ static int cdce925_probe(struct i2c_client *client, for (i = 0; i < data->chip_info->num_plls; ++i) { pll_clk_name[i] = kasprintf(GFP_KERNEL, "%pOFn.pll%d", client->dev.of_node, i); + if (!pll_clk_name[i]) { + err = -ENOMEM; + goto error; + } init.name = pll_clk_name[i]; data->pll[i].chip = data; data->pll[i].hw.init = &init; @@ -746,6 +750,10 @@ static int cdce925_probe(struct i2c_client *client, init.num_parents = 1; init.parent_names = &parent_name; /* Mux Y1 to input */ init.name = kasprintf(GFP_KERNEL, "%pOFn.Y1", client->dev.of_node); + if (!init.name) { + err = -ENOMEM; + goto error; + } data->clk[0].chip = data; data->clk[0].hw.init = &init; data->clk[0].index = 0; @@ -764,6 +772,10 @@ static int cdce925_probe(struct i2c_client *client, for (i = 1; i < data->chip_info->num_outputs; ++i) { init.name = kasprintf(GFP_KERNEL, "%pOFn.Y%d", client->dev.of_node, i+1); + if (!init.name) { + err = -ENOMEM; + goto error; + } data->clk[i].chip = data; data->clk[i].hw.init = &init; data->clk[i].index = i; -- 2.39.2