From: Guenter Roeck <linux@roeck-us.net>
To: frowand.list@gmail.com, Rob Herring <robh+dt@kernel.org>,
Pantelis Antoniou <pantelis.antoniou@konsulko.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>, Alan Tull <atull@kernel.org>,
Moritz Fischer <mdf@kernel.org>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
devicetree@vger.kernel.org, linux-fpga@vger.kernel.org
Subject: Re: [PATCH 15/16] of: unittest: initialize args before calling of_irq_parse_one()
Date: Fri, 5 Oct 2018 06:26:22 -0700 [thread overview]
Message-ID: <7fc4b9da-5fdf-11c9-e168-ccb2d960adea@roeck-us.net> (raw)
In-Reply-To: <1538712767-30394-16-git-send-email-frowand.list@gmail.com>
On 10/04/2018 09:12 PM, frowand.list@gmail.com wrote:
> From: Frank Rowand <frank.rowand@sony.com>
>
> 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 and does not set args.np instead of trying to
> dereference a random value.
>
> Reported-by: Guenter Roeck <linux@roeck-us.net>
> Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
The same problem exists when of_parse_phandle_with_args() reports an error.
Guenter
> ---
> drivers/of/unittest.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
> index 6d80f474c8f2..b61a33f30a56 100644
> --- a/drivers/of/unittest.c
> +++ b/drivers/of/unittest.c
> @@ -780,7 +780,7 @@ 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 +801,7 @@ 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 +854,7 @@ 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 */
>
next prev parent reply other threads:[~2018-10-05 13:26 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-05 4:12 [PATCH 00/16] of: overlay: validation checks, subsequent fixes frowand.list
2018-10-05 4:12 ` [PATCH 01/16] of: overlay: add tests to validate kfrees from overlay removal frowand.list
2018-10-05 4:12 ` [PATCH 02/16] of: overlay: add missing of_node_put() after add new node to changeset frowand.list
2018-10-05 4:12 ` [PATCH 03/16] of: overlay: add missing of_node_get() in __of_attach_node_sysfs frowand.list
2018-10-05 4:12 ` [PATCH 04/16] powerpc/pseries: add of_node_put() in dlpar_detach_node() frowand.list
2018-10-05 4:12 ` [PATCH 05/16] of: overlay: use prop add changeset entry for property in new nodes frowand.list
2018-10-09 20:28 ` Alan Tull
2018-10-09 23:44 ` Frank Rowand
2018-10-10 6:04 ` [PATCH 05.1/16] of:overlay: missing name, phandle, linux,phandle " frowand.list
2018-10-10 6:49 ` Frank Rowand
2018-10-10 20:40 ` Alan Tull
2018-10-10 21:03 ` Frank Rowand
2018-10-11 5:39 ` Frank Rowand
2018-10-11 19:33 ` Alan Tull
2018-10-11 23:38 ` Frank Rowand
2018-10-05 4:12 ` [PATCH 06/16] of: overlay: do not duplicate properties from overlay for " frowand.list
2018-10-05 4:12 ` [PATCH 07/16] of: dynamic: change type of of_{at,de}tach_node() to void frowand.list
2018-10-05 4:12 ` [PATCH 08/16] of: overlay: reorder fields in struct fragment frowand.list
2018-10-05 4:12 ` [PATCH 09/16] of: overlay: validate overlay properties #address-cells and #size-cells frowand.list
2018-10-05 15:07 ` Rob Herring
2018-10-05 18:53 ` Frank Rowand
2018-10-05 19:04 ` Rob Herring
2018-10-05 19:09 ` Frank Rowand
2018-10-08 15:57 ` Alan Tull
2018-10-08 18:46 ` Alan Tull
2018-10-09 0:02 ` Frank Rowand
2018-10-09 18:40 ` Alan Tull
2018-10-05 4:12 ` [PATCH 10/16] of: overlay: make all pr_debug() and pr_err() messages unique frowand.list
2018-10-05 4:12 ` [PATCH 11/16] of: overlay: test case of two fragments adding same node frowand.list
2018-10-05 4:12 ` [PATCH 12/16] of: overlay: check prevents multiple fragments add or delete " frowand.list
2018-10-05 4:12 ` [PATCH 13/16] of: overlay: check prevents multiple fragments touching same property frowand.list
2018-10-05 4:12 ` [PATCH 14/16] of: unittest: remove unused of_unittest_apply_overlay() argument frowand.list
2018-10-05 4:12 ` [PATCH 15/16] of: unittest: initialize args before calling of_irq_parse_one() frowand.list
2018-10-05 13:26 ` Guenter Roeck [this message]
2018-10-05 19:05 ` Frank Rowand
2018-10-05 14:53 ` Rob Herring
2018-10-05 19:04 ` Frank Rowand
2018-10-05 4:12 ` [PATCH 16/16] of: unittest: find overlays[] entry by name instead of index frowand.list
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