From ed36b4dba54a421ce5551638f6a9790b2c2116b1 Mon Sep 17 00:00:00 2001 From: Christophe Jaillet Date: Sun, 27 Aug 2017 08:30:34 +0200 Subject: [PATCH] libnvdimm, btt: check memory allocation failure 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: Fixes: 14e494542636 ("libnvdimm, btt: BTT updates for UEFI 2.7 format") Signed-off-by: Christophe JAILLET Reviewed-by: Vishal Verma Signed-off-by: Dan Williams --- drivers/nvdimm/btt.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 14323faf8bd9..7ec6393b6ba1 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -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