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libnvdimm, btt: check memory allocation failure

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Check memory allocation failures and return -ENOMEM in such cases, as
already done few lines below for another memory allocation.

This avoids NULL pointers dereference.

Cc: <stable@vger.kernel.org>
Fixes: 14e494542636 ("libnvdimm, btt: BTT updates for UEFI 2.7 format")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Christophe Jaillet 2017-08-27 08:30:34 +02:00 committed by Dan Williams
parent 0288176869
commit ed36b4dba5
1 changed files with 2 additions and 0 deletions
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2
drivers/nvdimm/btt.c
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@ -1429,6 +1429,8 @@ int nvdimm_namespace_attach_btt(struct nd_namespace_common *ndns)
}
btt_sb = devm_kzalloc(&nd_btt->dev, sizeof(*btt_sb), GFP_KERNEL);
if (!btt_sb)
return -ENOMEM;
/*
* If this returns < 0, that is ok as it just means there wasn't