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[24.6.192.50]) by smtp.gmail.com with ESMTPSA id v81-v6sm38129268pfj.25.2018.10.18.15.48.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 18 Oct 2018 15:48:25 -0700 (PDT) From: frowand.list@gmail.com To: Rob Herring , Pantelis Antoniou , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Alan Tull , Moritz Fischer Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-fpga@vger.kernel.org Subject: [PATCH v5 18/18] of: unittest: initialize args before calling of_*parse_*() Date: Thu, 18 Oct 2018 15:46:36 -0700 Message-Id: <1539902796-8382-19-git-send-email-frowand.list@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1539902796-8382-1-git-send-email-frowand.list@gmail.com> References: <1539902796-8382-1-git-send-email-frowand.list@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Frank Rowand Callers of of_irq_parse_one() blindly use the pointer args.np without checking whether of_irq_parse_one() had an error and thus did not set the value of args.np. Initialize args to zero so that using the format "%pOF" to show the value of args.np will show "(null)" when of_irq_parse_one() has an error. This prevents the dereference of a random value. Make the same fix for callers of of_parse_phandle_with_args() and of_parse_phandle_with_args_map(). Reported-by: Guenter Roeck Signed-off-by: Frank Rowand --- drivers/of/unittest.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 785985bdbfa6..5f4db23e4752 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -375,6 +375,7 @@ static void __init of_unittest_parse_phandle_with_args(void) for (i = 0; i < 8; i++) { bool passed = true; + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list", "#phandle-cells", i, &args); @@ -428,6 +429,7 @@ static void __init of_unittest_parse_phandle_with_args(void) } /* Check for missing list property */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list-missing", "#phandle-cells", 0, &args); unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); @@ -436,6 +438,7 @@ static void __init of_unittest_parse_phandle_with_args(void) unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); /* Check for missing cells property */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list", "#phandle-cells-missing", 0, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); @@ -444,6 +447,7 @@ static void __init of_unittest_parse_phandle_with_args(void) unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); /* Check for bad phandle in list */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", "#phandle-cells", 0, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); @@ -452,6 +456,7 @@ static void __init of_unittest_parse_phandle_with_args(void) unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); /* Check for incorrectly formed argument list */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", "#phandle-cells", 1, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); @@ -502,6 +507,7 @@ static void __init of_unittest_parse_phandle_with_args_map(void) for (i = 0; i < 8; i++) { bool passed = true; + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list", "phandle", i, &args); @@ -559,21 +565,25 @@ static void __init of_unittest_parse_phandle_with_args_map(void) } /* Check for missing list property */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list-missing", "phandle", 0, &args); unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); /* Check for missing cells,map,mask property */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list", "phandle-missing", 0, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); /* Check for bad phandle in list */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle", "phandle", 0, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); /* Check for incorrectly formed argument list */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args", "phandle", 1, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); @@ -780,7 +790,7 @@ static void __init of_unittest_parse_interrupts(void) for (i = 0; i < 4; i++) { bool passed = true; - args.args_count = 0; + memset(&args, 0, sizeof(args)); rc = of_irq_parse_one(np, i, &args); passed &= !rc; @@ -801,7 +811,7 @@ static void __init of_unittest_parse_interrupts(void) for (i = 0; i < 4; i++) { bool passed = true; - args.args_count = 0; + memset(&args, 0, sizeof(args)); rc = of_irq_parse_one(np, i, &args); /* Test the values from tests-phandle.dtsi */ @@ -854,6 +864,7 @@ static void __init of_unittest_parse_interrupts_extended(void) for (i = 0; i < 7; i++) { bool passed = true; + memset(&args, 0, sizeof(args)); rc = of_irq_parse_one(np, i, &args); /* Test the values from tests-phandle.dtsi */ -- Frank Rowand From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.6 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,URIBL_SBL,URIBL_SBL_A,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 83679C67863 for ; 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[24.6.192.50]) by smtp.gmail.com with ESMTPSA id v81-v6sm38129268pfj.25.2018.10.18.15.48.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 18 Oct 2018 15:48:25 -0700 (PDT) From: frowand.list@gmail.com To: Rob Herring , Pantelis Antoniou , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Alan Tull , Moritz Fischer Subject: [PATCH v5 18/18] of: unittest: initialize args before calling of_*parse_*() Date: Thu, 18 Oct 2018 15:46:36 -0700 Message-Id: <1539902796-8382-19-git-send-email-frowand.list@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1539902796-8382-1-git-send-email-frowand.list@gmail.com> References: <1539902796-8382-1-git-send-email-frowand.list@gmail.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-fpga@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Frank Rowand Callers of of_irq_parse_one() blindly use the pointer args.np without checking whether of_irq_parse_one() had an error and thus did not set the value of args.np. Initialize args to zero so that using the format "%pOF" to show the value of args.np will show "(null)" when of_irq_parse_one() has an error. This prevents the dereference of a random value. Make the same fix for callers of of_parse_phandle_with_args() and of_parse_phandle_with_args_map(). Reported-by: Guenter Roeck Signed-off-by: Frank Rowand --- drivers/of/unittest.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 785985bdbfa6..5f4db23e4752 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -375,6 +375,7 @@ static void __init of_unittest_parse_phandle_with_args(void) for (i = 0; i < 8; i++) { bool passed = true; + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list", "#phandle-cells", i, &args); @@ -428,6 +429,7 @@ static void __init of_unittest_parse_phandle_with_args(void) } /* Check for missing list property */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list-missing", "#phandle-cells", 0, &args); unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); @@ -436,6 +438,7 @@ static void __init of_unittest_parse_phandle_with_args(void) unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); /* Check for missing cells property */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list", "#phandle-cells-missing", 0, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); @@ -444,6 +447,7 @@ static void __init of_unittest_parse_phandle_with_args(void) unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); /* Check for bad phandle in list */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle", "#phandle-cells", 0, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); @@ -452,6 +456,7 @@ static void __init of_unittest_parse_phandle_with_args(void) unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); /* Check for incorrectly formed argument list */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args(np, "phandle-list-bad-args", "#phandle-cells", 1, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); @@ -502,6 +507,7 @@ static void __init of_unittest_parse_phandle_with_args_map(void) for (i = 0; i < 8; i++) { bool passed = true; + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list", "phandle", i, &args); @@ -559,21 +565,25 @@ static void __init of_unittest_parse_phandle_with_args_map(void) } /* Check for missing list property */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list-missing", "phandle", 0, &args); unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc); /* Check for missing cells,map,mask property */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list", "phandle-missing", 0, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); /* Check for bad phandle in list */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle", "phandle", 0, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); /* Check for incorrectly formed argument list */ + memset(&args, 0, sizeof(args)); rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args", "phandle", 1, &args); unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc); @@ -780,7 +790,7 @@ static void __init of_unittest_parse_interrupts(void) for (i = 0; i < 4; i++) { bool passed = true; - args.args_count = 0; + memset(&args, 0, sizeof(args)); rc = of_irq_parse_one(np, i, &args); passed &= !rc; @@ -801,7 +811,7 @@ static void __init of_unittest_parse_interrupts(void) for (i = 0; i < 4; i++) { bool passed = true; - args.args_count = 0; + memset(&args, 0, sizeof(args)); rc = of_irq_parse_one(np, i, &args); /* Test the values from tests-phandle.dtsi */ @@ -854,6 +864,7 @@ static void __init of_unittest_parse_interrupts_extended(void) for (i = 0; i < 7; i++) { bool passed = true; + memset(&args, 0, sizeof(args)); rc = of_irq_parse_one(np, i, &args); /* Test the values from tests-phandle.dtsi */ -- Frank Rowand