* [PATCH v2] of: unittest: fix memory leak in attach_node_and_children
@ 2019-11-26 1:48 ` Erhard Furtner
0 siblings, 0 replies; 4+ messages in thread
From: Erhard Furtner @ 2019-11-26 1:48 UTC (permalink / raw)
To: linuxppc-dev
Cc: robh+dt, frowand.list, devicetree, linux-kernel, Erhard Furtner,
Michael Ellerman, Tyrel Datwyler
In attach_node_and_children memory is allocated for full_name via
kasprintf. If the condition of the 1st if is not met the function
returns early without freeing the memory. Add a kfree() to fix that.
This has been detected with kmemleak:
Link: https://bugzilla.kernel.org/show_bug.cgi?id=205327
It looks like the leak was introduced by this commit:
Fixes: 5babefb7f7ab ("of: unittest: allow base devicetree to have symbol metadata")
Signed-off-by: Erhard Furtner <erhard_f@mailbox.org>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
Changes in v2:
- Make the commit message more clearer.
drivers/of/unittest.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 92e895d86458..ca7823eef2b4 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -1146,8 +1146,10 @@ static void attach_node_and_children(struct device_node *np)
full_name = kasprintf(GFP_KERNEL, "%pOF", np);
if (!strcmp(full_name, "/__local_fixups__") ||
- !strcmp(full_name, "/__fixups__"))
+ !strcmp(full_name, "/__fixups__")) {
+ kfree(full_name);
return;
+ }
dup = of_find_node_by_path(full_name);
kfree(full_name);
--
2.23.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH v2] of: unittest: fix memory leak in attach_node_and_children
@ 2019-11-26 1:48 ` Erhard Furtner
0 siblings, 0 replies; 4+ messages in thread
From: Erhard Furtner @ 2019-11-26 1:48 UTC (permalink / raw)
To: linuxppc-dev
Cc: devicetree, Erhard Furtner, linux-kernel, robh+dt,
Tyrel Datwyler, frowand.list
In attach_node_and_children memory is allocated for full_name via
kasprintf. If the condition of the 1st if is not met the function
returns early without freeing the memory. Add a kfree() to fix that.
This has been detected with kmemleak:
Link: https://bugzilla.kernel.org/show_bug.cgi?id=205327
It looks like the leak was introduced by this commit:
Fixes: 5babefb7f7ab ("of: unittest: allow base devicetree to have symbol metadata")
Signed-off-by: Erhard Furtner <erhard_f@mailbox.org>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
Changes in v2:
- Make the commit message more clearer.
drivers/of/unittest.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 92e895d86458..ca7823eef2b4 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -1146,8 +1146,10 @@ static void attach_node_and_children(struct device_node *np)
full_name = kasprintf(GFP_KERNEL, "%pOF", np);
if (!strcmp(full_name, "/__local_fixups__") ||
- !strcmp(full_name, "/__fixups__"))
+ !strcmp(full_name, "/__fixups__")) {
+ kfree(full_name);
return;
+ }
dup = of_find_node_by_path(full_name);
kfree(full_name);
--
2.23.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2] of: unittest: fix memory leak in attach_node_and_children
2019-11-26 1:48 ` Erhard Furtner
@ 2019-11-26 19:23 ` Rob Herring
-1 siblings, 0 replies; 4+ messages in thread
From: Rob Herring @ 2019-11-26 19:23 UTC (permalink / raw)
To: Erhard Furtner
Cc: linuxppc-dev, robh+dt, frowand.list, devicetree, linux-kernel,
Erhard Furtner, Michael Ellerman, Tyrel Datwyler
On Tue, 26 Nov 2019 02:48:04 +0100, Erhard Furtner wrote:
> In attach_node_and_children memory is allocated for full_name via
> kasprintf. If the condition of the 1st if is not met the function
> returns early without freeing the memory. Add a kfree() to fix that.
>
> This has been detected with kmemleak:
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=205327
>
> It looks like the leak was introduced by this commit:
> Fixes: 5babefb7f7ab ("of: unittest: allow base devicetree to have symbol metadata")
>
> Signed-off-by: Erhard Furtner <erhard_f@mailbox.org>
> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
> Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
> ---
> Changes in v2:
> - Make the commit message more clearer.
>
> drivers/of/unittest.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
Applied, thanks.
Rob
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] of: unittest: fix memory leak in attach_node_and_children
@ 2019-11-26 19:23 ` Rob Herring
0 siblings, 0 replies; 4+ messages in thread
From: Rob Herring @ 2019-11-26 19:23 UTC (permalink / raw)
To: Erhard Furtner
Cc: Erhard Furtner, devicetree, linux-kernel, linuxppc-dev, robh+dt,
Tyrel Datwyler, frowand.list
On Tue, 26 Nov 2019 02:48:04 +0100, Erhard Furtner wrote:
> In attach_node_and_children memory is allocated for full_name via
> kasprintf. If the condition of the 1st if is not met the function
> returns early without freeing the memory. Add a kfree() to fix that.
>
> This has been detected with kmemleak:
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=205327
>
> It looks like the leak was introduced by this commit:
> Fixes: 5babefb7f7ab ("of: unittest: allow base devicetree to have symbol metadata")
>
> Signed-off-by: Erhard Furtner <erhard_f@mailbox.org>
> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
> Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
> ---
> Changes in v2:
> - Make the commit message more clearer.
>
> drivers/of/unittest.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
Applied, thanks.
Rob
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-11-26 19:25 UTC | newest]
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2019-11-26 1:48 [PATCH v2] of: unittest: fix memory leak in attach_node_and_children Erhard Furtner
2019-11-26 1:48 ` Erhard Furtner
2019-11-26 19:23 ` Rob Herring
2019-11-26 19:23 ` Rob Herring
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