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s390/con3270: testing return kzalloc retval
author
Pierre Morel
<pmorel@linux.vnet.ibm.com>
Mon, 21 Dec 2015 14:31:06 +0000
(15:31 +0100)
committer
Martin Schwidefsky
<schwidefsky@de.ibm.com>
Wed, 30 Dec 2015 09:34:33 +0000
(10:34 +0100)
Return value from kzalloc is not tested and
using a null pointer would lead to crash.
Even if this should not happen at this moment, we
may let the system decide if there is a better choice.
Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
drivers/s390/char/con3270.c
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diff --git
a/drivers/s390/char/con3270.c
b/drivers/s390/char/con3270.c
index
7c511ad
..
4d7a9ba
100644
(file)
--- a/
drivers/s390/char/con3270.c
+++ b/
drivers/s390/char/con3270.c
@@
-606,6
+606,8
@@
con3270_init(void)
return PTR_ERR(rp);
condev = kzalloc(sizeof(struct con3270), GFP_KERNEL | GFP_DMA);
+ if (!condev)
+ return -ENOMEM;
condev->view.dev = rp;
condev->read = raw3270_request_alloc(0);