* Re: [PATCH] device property: Fix the length used in PROPERTY_ENTRY_STRING
[not found] ` <20190126160946.3D3CD218B0@mail.kernel.org>
@ 2019-01-28 9:07 ` Heikki Krogerus
2019-03-20 20:20 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Heikki Krogerus @ 2019-01-28 9:07 UTC (permalink / raw)
To: Sasha Levin; +Cc: Rafael J. Wysocki, Andy Shevchenko, stable
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On Sat, Jan 26, 2019 at 04:09:45PM +0000, Sasha Levin wrote:
> Hi,
>
> [This is an automated email]
>
> This commit has been processed because it contains a "Fixes:" tag,
> fixing commit: a85f42047533 device property: helper macros for property entry creation.
>
> The bot has tested the following trees: v4.20.4, v4.19.17, v4.14.95, v4.9.152.
>
> v4.20.4: Build OK!
> v4.19.17: Build OK!
> v4.14.95: Failed to apply! Possible dependencies:
> 63dcc7090137 ("device property: Get rid of union aliasing")
> 6e98503dba64 ("efi/apple-properties: Remove redundant attribute initialization from unmarshal_key_value_pairs()")
> b2ca8bdff60c ("device property: Reuse property_entry_free_data()")
> d5f962fa269e ("device property: Move property_entry_free_data() upper")
>
> v4.9.152: Failed to apply! Possible dependencies:
> 027b25b26447 ("ACPI: Add FWNODE_ACPI_STATIC fwnode type")
> 07bb80d40b0e ("device property: Add support for remote endpoints")
> 0f194992c85f ("device property: Fix reading pset strings using array access functions")
> 1df09bc66f9b ("of: Move OF property and graph API from base.c to property.c")
> 21ea73f54c6d ("device property: Add fwnode_get_named_child_node()")
> 2475a2b6c877 ("drivers/of/base.c: Add of_property_read_u64_index")
> 2bd5452d46df ("device property: Add support for fwnode endpoints")
> 34055190b19d ("ACPI / property: Add fwnode_get_next_child_node()")
> 3708184afc77 ("device property: Move FW type specific functionality to FW specific files")
> 39e5aeed835d ("device property: Constify argument to pset fwnode backend")
> 3b27d00e7b6d ("device property: Move fwnode graph ops to firmware specific locations")
> 5fa23530d4fc ("of: base: add support to find the level of the last cache")
> 63dcc7090137 ("device property: Get rid of union aliasing")
> 79389a83bc38 ("ACPI / property: Add support for remote endpoints")
> 99db5ff7fe0b ("ACPI / property: Hierarchical properties support update")
> afaf26fd8458 ("device property: Add fwnode_get_parent()")
> b85ad494098b ("of: introduce of_graph_get_remote_node")
> bec84da8d1da ("device property: allow to constify properties")
> db3e50f3234b ("device property: Get rid of struct fwnode_handle type field")
> dfa672fbc0d9 ("ACPI / property: Add possiblity to retrieve parent firmware node")
> e7887c284969 ("device property: Add fwnode_handle_get()")
>
>
> How should we proceed with this patch?
Can we use the attached separate patches with v4.9 and v4.14 ?
thanks,
--
heikki
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From 6bd60b922b1f1e43fd534a11194553f27c036a1e Mon Sep 17 00:00:00 2001
From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Date: Wed, 23 Jan 2019 17:16:47 +0300
Subject: [PATCH] device property: Fix the length used in PROPERTY_ENTRY_STRING
With string type property entries we need to use
sizeof(const char *) instead of the number of characters as
the length of the entry.
If the string was shorter then sizeof(const char *),
attempts to read it would have failed with -EOVERFLOW. The
problem has been hidden because all build-in string
properties have had a string longer then 8 characters until
now.
Fixes: a85f42047533 ("device property: helper macros for property entry creation")
Cc: stable@vger.kernel.org # 4.9.x
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
include/linux/property.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/property.h b/include/linux/property.h
index 459337fb44d0..d5c7ebda4113 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -233,7 +233,7 @@ struct property_entry {
#define PROPERTY_ENTRY_STRING(_name_, _val_) \
(struct property_entry) { \
.name = _name_, \
- .length = sizeof(_val_), \
+ .length = sizeof(const char *), \
.is_string = true, \
{ .value = { .str = _val_ } }, \
}
--
2.20.1
[-- Attachment #3: for_v4.14.x.patch --]
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From 9ebe90b6f12d4107e8b7c3949a924486d311e28f Mon Sep 17 00:00:00 2001
From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Date: Wed, 23 Jan 2019 17:16:47 +0300
Subject: [PATCH] device property: Fix the length used in PROPERTY_ENTRY_STRING
With string type property entries we need to use
sizeof(const char *) instead of the number of characters as
the length of the entry.
If the string was shorter then sizeof(const char *),
attempts to read it would have failed with -EOVERFLOW. The
problem has been hidden because all build-in string
properties have had a string longer then 8 characters until
now.
Fixes: a85f42047533 ("device property: helper macros for property entry creation")
Cc: stable@vger.kernel.org # 4.14.x
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
include/linux/property.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/property.h b/include/linux/property.h
index 89d94b349912..45777ec1c524 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -252,7 +252,7 @@ struct property_entry {
#define PROPERTY_ENTRY_STRING(_name_, _val_) \
(struct property_entry) { \
.name = _name_, \
- .length = sizeof(_val_), \
+ .length = sizeof(const char *), \
.is_string = true, \
{ .value = { .str = _val_ } }, \
}
--
2.20.1
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